move Protocol.SQL.Gears into deprecated.js
This commit is contained in:
fredj
@@ -53,44 +53,6 @@
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* http://www.apache.org/licenses/LICENSE-2.0
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* http://www.apache.org/licenses/LICENSE-2.0
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*/
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*/
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/**
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* Contains portions of Gears <http://code.google.com/apis/gears/>
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*
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* Copyright 2007, Google Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of Google Inc. nor the names of its contributors may be
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* used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
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||||||
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Sets up google.gears.*, which is *the only* supported way to access Gears.
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*
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* Circumvent this file at your own risk!
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*
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* In the future, Gears may automatically define google.gears.* without this
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* file. Gears may use these objects to transparently fix bugs and compatibility
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* issues. Applications that use the code below will continue to work seamlessly
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* when that happens.
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*/
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/**
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/**
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* OpenLayers.Util.pagePosition is based on Yahoo's getXY method, which is
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* OpenLayers.Util.pagePosition is based on Yahoo's getXY method, which is
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* Copyright (c) 2006, Yahoo! Inc.
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* Copyright (c) 2006, Yahoo! Inc.
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@@ -122,4 +84,4 @@
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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*/
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@@ -1,265 +0,0 @@
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<!DOCTYPE html>
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
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<meta name="apple-mobile-web-app-capable" content="yes">
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<link rel="stylesheet" href="../theme/default/style.css" type="text/css">
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<!--[if lte IE 6]>
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<link rel="stylesheet" href="../theme/default/ie6-style.css" type="text/css" />
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<![endif]-->
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<link rel="stylesheet" href="style.css" type="text/css">
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<style type="text/css">
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.float-left {
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float: left;
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}
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.clear-left {
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clear: left;
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}
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</style>
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<script src="../lib/Gears/gears_init.js"></script>
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<script src="../lib/OpenLayers.js"></script>
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<script type="text/javascript">
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var map, vector, protocol, modify;
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function init() {
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// create Gears protocol
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protocol = new OpenLayers.Protocol.SQL.Gears({
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databaseName: "db_name",
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tableName: "table_name",
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saveFeatureState: false
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});
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if (!GearsIsSupported()) {
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return;
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}
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map = new OpenLayers.Map("map");
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// create base layer
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var layer = new OpenLayers.Layer.WMS("OpenLayers WMS",
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"http://vmap0.tiles.osgeo.org/wms/vmap0",
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{"layers": "basic"}
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);
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map.addLayer(layer);
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// create vector layer
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vector = new OpenLayers.Layer.Vector("Vector", {
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protocol: protocol,
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strategies : [new OpenLayers.Strategy.Fixed()],
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eventListeners: {
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featuremodified: function(obj) {
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displayStatus();
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}
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}
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});
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map.addLayer(vector);
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// create modify feature control
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modify = new OpenLayers.Control.ModifyFeature(vector);
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// create editing panel
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var panel = new OpenLayers.Control.Panel({
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displayClass: "olControlEditingToolbar"
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});
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var navigation = new OpenLayers.Control.Navigation({
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eventListeners: {
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activate: function(obj) {
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modify.activate();
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},
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deactivate: function(obj) {
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modify.deactivate();
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}
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}
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});
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var editing = new OpenLayers.Control.DrawFeature(
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vector, OpenLayers.Handler.Polygon, {
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displayClass: "olControlDrawFeaturePolygon",
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eventListeners: {
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featureadded: function(obj) {
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obj.feature.state = OpenLayers.State.INSERT;
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displayStatus();
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}
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}
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});
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panel.addControls([navigation, editing]);
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panel.defaultControl = navigation;
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// add controls to the map
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map.addControl(modify);
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map.addControl(panel);
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// center the map
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map.setCenter(new OpenLayers.LonLat(5, 40), 5);
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}
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function displayResult(txt) {
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if (window.resultDomElement === undefined) {
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window.resultDomElement = OpenLayers.Util.getElement("last-result");
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}
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resultDomElement.innerHTML = txt;
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displayStatus();
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}
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function displayStatus() {
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if (window.statusDomElement === undefined) {
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window.statusDomElement = OpenLayers.Util.getElement("status");
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}
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var createCnt = 0;
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var updateCnt = 0;
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var deleteCnt = 0;
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var i, len, state;
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for (i = 0, len = vector.features.length; i < len; i++) {
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state = vector.features[i].state;
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if (state == OpenLayers.State.INSERT) {
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createCnt++;
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} else if (state == OpenLayers.State.UPDATE) {
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updateCnt++;
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} else if (state == OpenLayers.State.DELETE) {
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deleteCnt++;
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}
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}
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statusDomElement.innerHTML = createCnt + " features to create, " +
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updateCnt + " features to update, " +
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deleteCnt + " features to delete";
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}
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function GearsIsSupported() {
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if (!protocol.supported()) {
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OpenLayers.Console.userError("You must install Gears prior to using this example");
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return false;
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}
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return true;
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}
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function featuresWithState(state) {
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var list = [];
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var i, len, feature;
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for (i = 0, len = vector.features.length; i < len; i++) {
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feature = vector.features[i];
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if (feature.state == state) {
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list.push(feature);
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}
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}
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return list;
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}
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function _sync() {
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if (!GearsIsSupported()) {
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return;
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}
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var resp = protocol.read();
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if (!resp.success()) {
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OpenLayers.Console.error("reading from Gears DB failed");
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return;
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}
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vector.destroyFeatures();
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if (!resp.features || resp.features.length <= 0) {
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displayResult("No features to read");
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return;
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}
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vector.addFeatures(resp.features);
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displayResult("features successfully read");
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}
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function _commit() {
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if (!GearsIsSupported()) {
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return;
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}
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var error = false;
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function callback(resp) {
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if (error) {
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return;
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}
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if (!resp.success()) {
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OpenLayers.Console.error("Commiting to Gears DB failed");
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error = true;
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return;
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}
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modify.selectControl.unselectAll();
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if (resp.reqFeatures) {
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vector.destroyFeatures(resp.reqFeatures);
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}
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if (resp.features) {
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vector.addFeatures(resp.features);
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}
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}
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if (vector.features.length > 0) {
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protocol.commit(vector.features, {
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"create": {
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callback: callback
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},
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"update": {
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callback: callback
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},
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"delete": {
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callback: callback
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}
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});
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if (!error) {
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displayResult("features successfully committed");
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}
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} else {
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displayResult("no features to commit");
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}
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}
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function _delete() {
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if (!GearsIsSupported()) {
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return;
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}
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var feature = vector.selectedFeatures[0];
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if (feature) {
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modify.selectControl.unselectAll();
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feature.state = OpenLayers.State.DELETE;
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displayStatus();
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}
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}
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</script>
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</head>
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<body onload="init()">
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<h1 id="title">Gears Protocol Example</h1>
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<div id="tags">
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Google, Gears
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</div>
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<p id="shortdesc">
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Shows the usage of the Gears protocol.
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</p>
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<div class="float-left">
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<div id="map" class="smallmap"></div>
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</div>
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<div>
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<a href="javascript:_sync()">Sync</a>
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<p>The Sync link destroys the features currently in the layer, reads
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features from the Gears database, and adds them to the layer.
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Uncommitted features will be lost.</p>
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<a href="javascript:_commit()">Commit</a>
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<p>The Commit link commits to the Gears database the features that are
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marked as INSERT, UPDATE or DELETE.</p>
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<a href="javascript:_delete()">Delete</a>
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<p>The Delete link marks the selected feature as DELETE. To select a feature
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click choose the navigation control in the editing toolbar.</p>
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</div>
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<div style="margin-top: 30px">
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<p>Status: <span id="status"></span></p>
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<p>Result: <span id="last-result"></span></p>
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</div>
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<div class="clear-left" id="docs">
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<p>This example demonstrates the usage of OpenLayers Gears protocol to
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read/create/update/delete features from/to the Gears database.
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<a href="http://gears.google.com/">Gears</a> must obviously be installed
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in your browser for this example to work.</p>
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</div>
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</body>
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</html>
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@@ -1,88 +0,0 @@
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/*
|
|
||||||
* Copyright 2007, Google Inc.
|
|
||||||
*
|
|
||||||
* Redistribution and use in source and binary forms, with or without
|
|
||||||
* modification, are permitted provided that the following conditions are met:
|
|
||||||
*
|
|
||||||
* 1. Redistributions of source code must retain the above copyright notice,
|
|
||||||
* this list of conditions and the following disclaimer.
|
|
||||||
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
||||||
* this list of conditions and the following disclaimer in the documentation
|
|
||||||
* and/or other materials provided with the distribution.
|
|
||||||
* 3. Neither the name of Google Inc. nor the names of its contributors may be
|
|
||||||
* used to endorse or promote products derived from this software without
|
|
||||||
* specific prior written permission.
|
|
||||||
*
|
|
||||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
|
||||||
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
||||||
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
|
|
||||||
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
||||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
||||||
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
|
|
||||||
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
||||||
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
|
||||||
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
|
||||||
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
||||||
*
|
|
||||||
* Sets up google.gears.*, which is *the only* supported way to access Gears.
|
|
||||||
*
|
|
||||||
* Circumvent this file at your own risk!
|
|
||||||
*
|
|
||||||
* In the future, Gears may automatically define google.gears.* without this
|
|
||||||
* file. Gears may use these objects to transparently fix bugs and compatibility
|
|
||||||
* issues. Applications that use the code below will continue to work seamlessly
|
|
||||||
* when that happens.
|
|
||||||
*/
|
|
||||||
|
|
||||||
(function() {
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|
||||||
// We are already defined. Hooray!
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|
||||||
if (window.google && google.gears) {
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||||||
return;
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|
||||||
}
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||||||
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|
||||||
var factory = null;
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||||||
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||||||
// Firefox
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||||||
if (typeof GearsFactory != 'undefined') {
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factory = new GearsFactory();
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||||||
} else {
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||||||
// IE
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||||||
try {
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||||||
factory = new ActiveXObject('Gears.Factory');
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|
||||||
// privateSetGlobalObject is only required and supported on WinCE.
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|
||||||
if (factory.getBuildInfo().indexOf('ie_mobile') != -1) {
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||||||
factory.privateSetGlobalObject(this);
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|
||||||
}
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|
||||||
} catch (e) {
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|
||||||
// Safari
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|
||||||
if ((typeof navigator.mimeTypes != 'undefined')
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|
||||||
&& navigator.mimeTypes["application/x-googlegears"]) {
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|
||||||
factory = document.createElement("object");
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|
||||||
factory.style.display = "none";
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||||||
factory.width = 0;
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|
||||||
factory.height = 0;
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|
||||||
factory.type = "application/x-googlegears";
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|
||||||
document.documentElement.appendChild(factory);
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|
||||||
}
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|
||||||
}
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|
||||||
}
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|
||||||
|
|
||||||
// *Do not* define any objects if Gears is not installed. This mimics the
|
|
||||||
// behavior of Gears defining the objects in the future.
|
|
||||||
if (!factory) {
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
|
|
||||||
// Now set up the objects, being careful not to overwrite anything.
|
|
||||||
//
|
|
||||||
// Note: In Internet Explorer for Windows Mobile, you can't add properties to
|
|
||||||
// the window object. However, global objects are automatically added as
|
|
||||||
// properties of the window object in all browsers.
|
|
||||||
if (!window.google) {
|
|
||||||
google = {};
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|
||||||
}
|
|
||||||
|
|
||||||
if (!google.gears) {
|
|
||||||
google.gears = {factory: factory};
|
|
||||||
}
|
|
||||||
})();
|
|
||||||
@@ -241,7 +241,6 @@
|
|||||||
"OpenLayers/Protocol.js",
|
"OpenLayers/Protocol.js",
|
||||||
"OpenLayers/Protocol/HTTP.js",
|
"OpenLayers/Protocol/HTTP.js",
|
||||||
"OpenLayers/Protocol/SQL.js",
|
"OpenLayers/Protocol/SQL.js",
|
||||||
"OpenLayers/Protocol/SQL/Gears.js",
|
|
||||||
"OpenLayers/Protocol/WFS.js",
|
"OpenLayers/Protocol/WFS.js",
|
||||||
"OpenLayers/Protocol/WFS/v1.js",
|
"OpenLayers/Protocol/WFS/v1.js",
|
||||||
"OpenLayers/Protocol/WFS/v1_0_0.js",
|
"OpenLayers/Protocol/WFS/v1_0_0.js",
|
||||||
|
|||||||
@@ -1,561 +0,0 @@
|
|||||||
/* Copyright (c) 2006-2011 by OpenLayers Contributors (see authors.txt for
|
|
||||||
* full list of contributors). Published under the Clear BSD license.
|
|
||||||
* See http://svn.openlayers.org/trunk/openlayers/license.txt for the
|
|
||||||
* full text of the license. */
|
|
||||||
|
|
||||||
/**
|
|
||||||
* @requires Gears/gears_init.js
|
|
||||||
* @requires OpenLayers/Protocol/SQL.js
|
|
||||||
* @requires OpenLayers/Format/JSON.js
|
|
||||||
* @requires OpenLayers/Format/WKT.js
|
|
||||||
*/
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Class: OpenLayers.Protocol.SQL.Gears
|
|
||||||
* This Protocol stores feature in the browser via the Gears Database module
|
|
||||||
* <http://code.google.com/apis/gears/api_database.html>.
|
|
||||||
*
|
|
||||||
* The main advantage is that all the read, create, update and delete operations
|
|
||||||
* can be done offline.
|
|
||||||
*
|
|
||||||
* Inherits from:
|
|
||||||
* - <OpenLayers.Protocol.SQL>
|
|
||||||
*/
|
|
||||||
OpenLayers.Protocol.SQL.Gears = OpenLayers.Class(OpenLayers.Protocol.SQL, {
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Property: FID_PREFIX
|
|
||||||
* {String}
|
|
||||||
*/
|
|
||||||
FID_PREFIX: '__gears_fid__',
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Property: NULL_GEOMETRY
|
|
||||||
* {String}
|
|
||||||
*/
|
|
||||||
NULL_GEOMETRY: '__gears_null_geometry__',
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Property: NULL_FEATURE_STATE
|
|
||||||
* {String}
|
|
||||||
*/
|
|
||||||
NULL_FEATURE_STATE: '__gears_null_feature_state__',
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Property: jsonParser
|
|
||||||
* {<OpenLayers.Format.JSON>}
|
|
||||||
*/
|
|
||||||
jsonParser: null,
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Property: wktParser
|
|
||||||
* {<OpenLayers.Format.WKT>}
|
|
||||||
*/
|
|
||||||
wktParser: null,
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Property: fidRegExp
|
|
||||||
* {RegExp} Regular expression to know whether a feature was
|
|
||||||
* created in offline mode.
|
|
||||||
*/
|
|
||||||
fidRegExp: null,
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Property: saveFeatureState
|
|
||||||
* {Boolean} Whether to save the feature state (<OpenLayers.State>)
|
|
||||||
* into the database, defaults to true.
|
|
||||||
*/
|
|
||||||
saveFeatureState: true,
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Property: typeOfFid
|
|
||||||
* {String} The type of the feature identifier, either "number" or
|
|
||||||
* "string", defaults to "string".
|
|
||||||
*/
|
|
||||||
typeOfFid: "string",
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Property: db
|
|
||||||
* {GearsDatabase}
|
|
||||||
*/
|
|
||||||
db: null,
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Constructor: OpenLayers.Protocol.SQL.Gears
|
|
||||||
*/
|
|
||||||
initialize: function(options) {
|
|
||||||
if (!this.supported()) {
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
OpenLayers.Protocol.SQL.prototype.initialize.apply(this, [options]);
|
|
||||||
this.jsonParser = new OpenLayers.Format.JSON();
|
|
||||||
this.wktParser = new OpenLayers.Format.WKT();
|
|
||||||
|
|
||||||
this.fidRegExp = new RegExp('^' + this.FID_PREFIX);
|
|
||||||
this.initializeDatabase();
|
|
||||||
|
|
||||||
|
|
||||||
},
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Method: initializeDatabase
|
|
||||||
*/
|
|
||||||
initializeDatabase: function() {
|
|
||||||
this.db = google.gears.factory.create('beta.database');
|
|
||||||
this.db.open(this.databaseName);
|
|
||||||
this.db.execute(
|
|
||||||
"CREATE TABLE IF NOT EXISTS " + this.tableName +
|
|
||||||
" (fid TEXT UNIQUE, geometry TEXT, properties TEXT," +
|
|
||||||
" state TEXT)");
|
|
||||||
},
|
|
||||||
|
|
||||||
/**
|
|
||||||
* APIMethod: destroy
|
|
||||||
* Clean up the protocol.
|
|
||||||
*/
|
|
||||||
destroy: function() {
|
|
||||||
this.db.close();
|
|
||||||
this.db = null;
|
|
||||||
|
|
||||||
this.jsonParser = null;
|
|
||||||
this.wktParser = null;
|
|
||||||
|
|
||||||
OpenLayers.Protocol.SQL.prototype.destroy.apply(this);
|
|
||||||
},
|
|
||||||
|
|
||||||
/**
|
|
||||||
* APIMethod: supported
|
|
||||||
* Determine whether a browser supports Gears
|
|
||||||
*
|
|
||||||
* Returns:
|
|
||||||
* {Boolean} The browser supports Gears
|
|
||||||
*/
|
|
||||||
supported: function() {
|
|
||||||
return !!(window.google && google.gears);
|
|
||||||
},
|
|
||||||
|
|
||||||
/**
|
|
||||||
* APIMethod: read
|
|
||||||
* Read all features from the database and return a
|
|
||||||
* <OpenLayers.Protocol.Response> instance. If the options parameter
|
|
||||||
* contains a callback attribute, the function is called with the response
|
|
||||||
* as a parameter.
|
|
||||||
*
|
|
||||||
* Parameters:
|
|
||||||
* options - {Object} Optional object for configuring the request; it
|
|
||||||
* can have the {Boolean} property "noFeatureStateReset" which
|
|
||||||
* specifies if the state of features read from the Gears
|
|
||||||
* database must be reset to null, if "noFeatureStateReset"
|
|
||||||
* is undefined or false then each feature's state is reset
|
|
||||||
* to null, if "noFeatureStateReset" is true the feature state
|
|
||||||
* is preserved.
|
|
||||||
*
|
|
||||||
* Returns:
|
|
||||||
* {<OpenLayers.Protocol.Response>} An <OpenLayers.Protocol.Response>
|
|
||||||
* object.
|
|
||||||
*/
|
|
||||||
read: function(options) {
|
|
||||||
OpenLayers.Protocol.prototype.read.apply(this, arguments);
|
|
||||||
options = OpenLayers.Util.applyDefaults(options, this.options);
|
|
||||||
|
|
||||||
var feature, features = [];
|
|
||||||
var rs = this.db.execute("SELECT * FROM " + this.tableName);
|
|
||||||
while (rs.isValidRow()) {
|
|
||||||
feature = this.unfreezeFeature(rs);
|
|
||||||
if (this.evaluateFilter(feature, options.filter)) {
|
|
||||||
if (!options.noFeatureStateReset) {
|
|
||||||
feature.state = null;
|
|
||||||
}
|
|
||||||
features.push(feature);
|
|
||||||
}
|
|
||||||
rs.next();
|
|
||||||
}
|
|
||||||
rs.close();
|
|
||||||
|
|
||||||
var resp = new OpenLayers.Protocol.Response({
|
|
||||||
code: OpenLayers.Protocol.Response.SUCCESS,
|
|
||||||
requestType: "read",
|
|
||||||
features: features
|
|
||||||
});
|
|
||||||
|
|
||||||
if (options && options.callback) {
|
|
||||||
options.callback.call(options.scope, resp);
|
|
||||||
}
|
|
||||||
|
|
||||||
return resp;
|
|
||||||
},
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Method: unfreezeFeature
|
|
||||||
*
|
|
||||||
* Parameters:
|
|
||||||
* row - {ResultSet}
|
|
||||||
*
|
|
||||||
* Returns:
|
|
||||||
* {<OpenLayers.Feature.Vector>}
|
|
||||||
*/
|
|
||||||
unfreezeFeature: function(row) {
|
|
||||||
var feature;
|
|
||||||
var wkt = row.fieldByName('geometry');
|
|
||||||
if (wkt == this.NULL_GEOMETRY) {
|
|
||||||
feature = new OpenLayers.Feature.Vector();
|
|
||||||
} else {
|
|
||||||
feature = this.wktParser.read(wkt);
|
|
||||||
}
|
|
||||||
|
|
||||||
feature.attributes = this.jsonParser.read(
|
|
||||||
row.fieldByName('properties'));
|
|
||||||
|
|
||||||
feature.fid = this.extractFidFromField(row.fieldByName('fid'));
|
|
||||||
|
|
||||||
var state = row.fieldByName('state');
|
|
||||||
if (state == this.NULL_FEATURE_STATE) {
|
|
||||||
state = null;
|
|
||||||
}
|
|
||||||
feature.state = state;
|
|
||||||
|
|
||||||
return feature;
|
|
||||||
},
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Method: extractFidFromField
|
|
||||||
*
|
|
||||||
* Parameters:
|
|
||||||
* field - {String}
|
|
||||||
*
|
|
||||||
* Returns
|
|
||||||
* {String} or {Number} The fid.
|
|
||||||
*/
|
|
||||||
extractFidFromField: function(field) {
|
|
||||||
if (!field.match(this.fidRegExp) && this.typeOfFid == "number") {
|
|
||||||
field = parseFloat(field);
|
|
||||||
}
|
|
||||||
return field;
|
|
||||||
},
|
|
||||||
|
|
||||||
/**
|
|
||||||
* APIMethod: create
|
|
||||||
* Create new features into the database.
|
|
||||||
*
|
|
||||||
* Parameters:
|
|
||||||
* features - {Array({<OpenLayers.Feature.Vector>})} or
|
|
||||||
* {<OpenLayers.Feature.Vector>} The features to create in
|
|
||||||
* the database.
|
|
||||||
* options - {Object} Optional object for configuring the request.
|
|
||||||
*
|
|
||||||
* Returns:
|
|
||||||
* {<OpenLayers.Protocol.Response>} An <OpenLayers.Protocol.Response>
|
|
||||||
* object.
|
|
||||||
*/
|
|
||||||
create: function(features, options) {
|
|
||||||
options = OpenLayers.Util.applyDefaults(options, this.options);
|
|
||||||
|
|
||||||
var resp = this.createOrUpdate(features);
|
|
||||||
resp.requestType = "create";
|
|
||||||
|
|
||||||
if (options && options.callback) {
|
|
||||||
options.callback.call(options.scope, resp);
|
|
||||||
}
|
|
||||||
|
|
||||||
return resp;
|
|
||||||
},
|
|
||||||
|
|
||||||
/**
|
|
||||||
* APIMethod: update
|
|
||||||
* Construct a request updating modified feature.
|
|
||||||
*
|
|
||||||
* Parameters:
|
|
||||||
* features - {Array({<OpenLayers.Feature.Vector>})} or
|
|
||||||
* {<OpenLayers.Feature.Vector>} The features to update in
|
|
||||||
* the database.
|
|
||||||
* options - {Object} Optional object for configuring the request.
|
|
||||||
*
|
|
||||||
* Returns:
|
|
||||||
* {<OpenLayers.Protocol.Response>} An <OpenLayers.Protocol.Response>
|
|
||||||
* object.
|
|
||||||
*/
|
|
||||||
update: function(features, options) {
|
|
||||||
options = OpenLayers.Util.applyDefaults(options, this.options);
|
|
||||||
|
|
||||||
var resp = this.createOrUpdate(features);
|
|
||||||
resp.requestType = "update";
|
|
||||||
|
|
||||||
if (options && options.callback) {
|
|
||||||
options.callback.call(options.scope, resp);
|
|
||||||
}
|
|
||||||
|
|
||||||
return resp;
|
|
||||||
},
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Method: createOrUpdate
|
|
||||||
* Construct a request for updating or creating features in the
|
|
||||||
* database.
|
|
||||||
*
|
|
||||||
* Parameters:
|
|
||||||
* features - {Array({<OpenLayers.Feature.Vector>})} or
|
|
||||||
* {<OpenLayers.Feature.Vector>} The feature to create or update
|
|
||||||
* in the database.
|
|
||||||
*
|
|
||||||
* Returns:
|
|
||||||
* {<OpenLayers.Protocol.Response>} An <OpenLayers.Protocol.Response>
|
|
||||||
* object.
|
|
||||||
*/
|
|
||||||
createOrUpdate: function(features) {
|
|
||||||
if (!(OpenLayers.Util.isArray(features))) {
|
|
||||||
features = [features];
|
|
||||||
}
|
|
||||||
|
|
||||||
var i, len = features.length, feature;
|
|
||||||
var insertedFeatures = new Array(len);
|
|
||||||
|
|
||||||
for (i = 0; i < len; i++) {
|
|
||||||
feature = features[i];
|
|
||||||
var params = this.freezeFeature(feature);
|
|
||||||
this.db.execute(
|
|
||||||
"REPLACE INTO " + this.tableName +
|
|
||||||
" (fid, geometry, properties, state)" +
|
|
||||||
" VALUES (?, ?, ?, ?)",
|
|
||||||
params);
|
|
||||||
|
|
||||||
var clone = feature.clone();
|
|
||||||
clone.fid = this.extractFidFromField(params[0]);
|
|
||||||
insertedFeatures[i] = clone;
|
|
||||||
}
|
|
||||||
|
|
||||||
return new OpenLayers.Protocol.Response({
|
|
||||||
code: OpenLayers.Protocol.Response.SUCCESS,
|
|
||||||
features: insertedFeatures,
|
|
||||||
reqFeatures: features
|
|
||||||
});
|
|
||||||
},
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Method: freezeFeature
|
|
||||||
*
|
|
||||||
* Parameters:
|
|
||||||
* feature - {<OpenLayers.Feature.Vector>}
|
|
||||||
* state - {String} The feature state to store in the database.
|
|
||||||
*
|
|
||||||
* Returns:
|
|
||||||
* {Array}
|
|
||||||
*/
|
|
||||||
freezeFeature: function(feature) {
|
|
||||||
// 2 notes:
|
|
||||||
// - fid might not be a string
|
|
||||||
// - getFeatureStateForFreeze needs the feature fid to it's stored
|
|
||||||
// in the feature here
|
|
||||||
feature.fid = feature.fid != null ?
|
|
||||||
"" + feature.fid : OpenLayers.Util.createUniqueID(this.FID_PREFIX);
|
|
||||||
|
|
||||||
var geometry = feature.geometry != null ?
|
|
||||||
feature.geometry.toString() : this.NULL_GEOMETRY;
|
|
||||||
|
|
||||||
var properties = this.jsonParser.write(feature.attributes);
|
|
||||||
|
|
||||||
var state = this.getFeatureStateForFreeze(feature);
|
|
||||||
|
|
||||||
return [feature.fid, geometry, properties, state];
|
|
||||||
},
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Method: getFeatureStateForFreeze
|
|
||||||
* Get the state of the feature to store into the database.
|
|
||||||
*
|
|
||||||
* Parameters:
|
|
||||||
* feature - {<OpenLayers.Feature.Vector>} The feature.
|
|
||||||
*
|
|
||||||
* Returns
|
|
||||||
* {String} The state
|
|
||||||
*/
|
|
||||||
getFeatureStateForFreeze: function(feature) {
|
|
||||||
var state;
|
|
||||||
if (!this.saveFeatureState) {
|
|
||||||
state = this.NULL_FEATURE_STATE;
|
|
||||||
} else if (this.createdOffline(feature)) {
|
|
||||||
// if the feature was created in offline mode, its
|
|
||||||
// state must remain INSERT
|
|
||||||
state = OpenLayers.State.INSERT;
|
|
||||||
} else {
|
|
||||||
state = feature.state;
|
|
||||||
}
|
|
||||||
return state;
|
|
||||||
},
|
|
||||||
|
|
||||||
/**
|
|
||||||
* APIMethod: delete
|
|
||||||
* Delete features from the database.
|
|
||||||
*
|
|
||||||
* Parameters:
|
|
||||||
* features - {Array({<OpenLayers.Feature.Vector>})} or
|
|
||||||
* {<OpenLayers.Feature.Vector>}
|
|
||||||
* options - {Object} Optional object for configuring the request.
|
|
||||||
* This object is modified and should not be reused.
|
|
||||||
*
|
|
||||||
* Returns:
|
|
||||||
* {<OpenLayers.Protocol.Response>} An <OpenLayers.Protocol.Response>
|
|
||||||
* object.
|
|
||||||
*/
|
|
||||||
"delete": function(features, options) {
|
|
||||||
if (!(OpenLayers.Util.isArray(features))) {
|
|
||||||
features = [features];
|
|
||||||
}
|
|
||||||
|
|
||||||
options = OpenLayers.Util.applyDefaults(options, this.options);
|
|
||||||
|
|
||||||
var i, len, feature;
|
|
||||||
for (i = 0, len = features.length; i < len; i++) {
|
|
||||||
feature = features[i];
|
|
||||||
|
|
||||||
// if saveFeatureState is set to true and if the feature wasn't created
|
|
||||||
// in offline mode we don't delete it in the database but just update
|
|
||||||
// it state column
|
|
||||||
if (this.saveFeatureState && !this.createdOffline(feature)) {
|
|
||||||
var toDelete = feature.clone();
|
|
||||||
toDelete.fid = feature.fid;
|
|
||||||
if (toDelete.geometry) {
|
|
||||||
toDelete.geometry.destroy();
|
|
||||||
toDelete.geometry = null;
|
|
||||||
}
|
|
||||||
toDelete.state = feature.state;
|
|
||||||
this.createOrUpdate(toDelete);
|
|
||||||
} else {
|
|
||||||
this.db.execute(
|
|
||||||
"DELETE FROM " + this.tableName +
|
|
||||||
" WHERE fid = ?", [feature.fid]);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
var resp = new OpenLayers.Protocol.Response({
|
|
||||||
code: OpenLayers.Protocol.Response.SUCCESS,
|
|
||||||
requestType: "delete",
|
|
||||||
reqFeatures: features
|
|
||||||
});
|
|
||||||
|
|
||||||
if (options && options.callback) {
|
|
||||||
options.callback.call(options.scope, resp);
|
|
||||||
}
|
|
||||||
|
|
||||||
return resp;
|
|
||||||
},
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Method: createdOffline
|
|
||||||
* Returns true if the feature had a feature id when it was created in
|
|
||||||
* the Gears database, false otherwise; this is determined by
|
|
||||||
* checking the form of the feature's fid value.
|
|
||||||
*
|
|
||||||
* Parameters:
|
|
||||||
* feature - {<OpenLayers.Feature.Vector>}
|
|
||||||
*
|
|
||||||
* Returns:
|
|
||||||
* {Boolean}
|
|
||||||
*/
|
|
||||||
createdOffline: function(feature) {
|
|
||||||
return (typeof feature.fid == "string" &&
|
|
||||||
!!(feature.fid.match(this.fidRegExp)));
|
|
||||||
},
|
|
||||||
|
|
||||||
/**
|
|
||||||
* APIMethod: commit
|
|
||||||
* Go over the features and for each take action
|
|
||||||
* based on the feature state. Possible actions are create,
|
|
||||||
* update and delete.
|
|
||||||
*
|
|
||||||
* Parameters:
|
|
||||||
* features - {Array({<OpenLayers.Feature.Vector>})}
|
|
||||||
* options - {Object} Object whose possible keys are "create", "update",
|
|
||||||
* "delete", "callback" and "scope", the values referenced by the
|
|
||||||
* first three are objects as passed to the "create", "update", and
|
|
||||||
* "delete" methods, the value referenced by the "callback" key is
|
|
||||||
* a function which is called when the commit operation is complete
|
|
||||||
* using the scope referenced by the "scope" key.
|
|
||||||
*
|
|
||||||
* Returns:
|
|
||||||
* {Array({<OpenLayers.Protocol.Response>})} An array of
|
|
||||||
* <OpenLayers.Protocol.Response> objects, one per request made
|
|
||||||
* to the database.
|
|
||||||
*/
|
|
||||||
commit: function(features, options) {
|
|
||||||
var opt, resp = [], nRequests = 0, nResponses = 0;
|
|
||||||
|
|
||||||
function callback(resp) {
|
|
||||||
if (++nResponses < nRequests) {
|
|
||||||
resp.last = false;
|
|
||||||
}
|
|
||||||
this.callUserCallback(options, resp);
|
|
||||||
}
|
|
||||||
|
|
||||||
var feature, toCreate = [], toUpdate = [], toDelete = [];
|
|
||||||
for (var i = features.length - 1; i >= 0; i--) {
|
|
||||||
feature = features[i];
|
|
||||||
switch (feature.state) {
|
|
||||||
case OpenLayers.State.INSERT:
|
|
||||||
toCreate.push(feature);
|
|
||||||
break;
|
|
||||||
case OpenLayers.State.UPDATE:
|
|
||||||
toUpdate.push(feature);
|
|
||||||
break;
|
|
||||||
case OpenLayers.State.DELETE:
|
|
||||||
toDelete.push(feature);
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
if (toCreate.length > 0) {
|
|
||||||
nRequests++;
|
|
||||||
opt = OpenLayers.Util.applyDefaults(
|
|
||||||
{"callback": callback, "scope": this},
|
|
||||||
options.create
|
|
||||||
);
|
|
||||||
resp.push(this.create(toCreate, opt));
|
|
||||||
}
|
|
||||||
if (toUpdate.length > 0) {
|
|
||||||
nRequests++;
|
|
||||||
opt = OpenLayers.Util.applyDefaults(
|
|
||||||
{"callback": callback, "scope": this},
|
|
||||||
options.update
|
|
||||||
);
|
|
||||||
resp.push(this.update(toUpdate, opt));
|
|
||||||
}
|
|
||||||
if (toDelete.length > 0) {
|
|
||||||
nRequests++;
|
|
||||||
opt = OpenLayers.Util.applyDefaults(
|
|
||||||
{"callback": callback, "scope": this},
|
|
||||||
options["delete"]
|
|
||||||
);
|
|
||||||
resp.push(this["delete"](toDelete, opt));
|
|
||||||
}
|
|
||||||
|
|
||||||
return resp;
|
|
||||||
},
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Method: clear
|
|
||||||
* Removes all rows of the table.
|
|
||||||
*/
|
|
||||||
clear: function() {
|
|
||||||
this.db.execute("DELETE FROM " + this.tableName);
|
|
||||||
},
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Method: callUserCallback
|
|
||||||
* This method is called from within commit each time a request is made
|
|
||||||
* to the database, it is responsible for calling the user-supplied
|
|
||||||
* callbacks.
|
|
||||||
*
|
|
||||||
* Parameters:
|
|
||||||
* options - {Object} The map of options passed to the commit call.
|
|
||||||
* resp - {<OpenLayers.Protocol.Response>}
|
|
||||||
*/
|
|
||||||
callUserCallback: function(options, resp) {
|
|
||||||
var opt = options[resp.requestType];
|
|
||||||
if (opt && opt.callback) {
|
|
||||||
opt.callback.call(opt.scope, resp);
|
|
||||||
}
|
|
||||||
if (resp.last && options.callback) {
|
|
||||||
options.callback.call(options.scope);
|
|
||||||
}
|
|
||||||
},
|
|
||||||
|
|
||||||
CLASS_NAME: "OpenLayers.Protocol.SQL.Gears"
|
|
||||||
});
|
|
||||||
@@ -16,6 +16,9 @@
|
|||||||
* @requires OpenLayers/Layer/EventPane.js
|
* @requires OpenLayers/Layer/EventPane.js
|
||||||
* @requires OpenLayers/Layer/FixedZoomLevels.js
|
* @requires OpenLayers/Layer/FixedZoomLevels.js
|
||||||
* @requires OpenLayers/Layer/SphericalMercator.js
|
* @requires OpenLayers/Layer/SphericalMercator.js
|
||||||
|
* @requires OpenLayers/Protocol/SQL.js
|
||||||
|
* @requires OpenLayers/Format/JSON.js
|
||||||
|
* @requires OpenLayers/Format/WKT.js
|
||||||
*/
|
*/
|
||||||
|
|
||||||
/**
|
/**
|
||||||
@@ -3632,3 +3635,644 @@ OpenLayers.Layer.VirtualEarth = OpenLayers.Class(
|
|||||||
|
|
||||||
CLASS_NAME: "OpenLayers.Layer.VirtualEarth"
|
CLASS_NAME: "OpenLayers.Layer.VirtualEarth"
|
||||||
});
|
});
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Copyright 2007, Google Inc.
|
||||||
|
*
|
||||||
|
* Redistribution and use in source and binary forms, with or without
|
||||||
|
* modification, are permitted provided that the following conditions are met:
|
||||||
|
*
|
||||||
|
* 1. Redistributions of source code must retain the above copyright notice,
|
||||||
|
* this list of conditions and the following disclaimer.
|
||||||
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
||||||
|
* this list of conditions and the following disclaimer in the documentation
|
||||||
|
* and/or other materials provided with the distribution.
|
||||||
|
* 3. Neither the name of Google Inc. nor the names of its contributors may be
|
||||||
|
* used to endorse or promote products derived from this software without
|
||||||
|
* specific prior written permission.
|
||||||
|
*
|
||||||
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
||||||
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||||
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
|
||||||
|
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||||
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
||||||
|
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
|
||||||
|
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
||||||
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
||||||
|
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
||||||
|
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||||
|
*
|
||||||
|
* Sets up google.gears.*, which is *the only* supported way to access Gears.
|
||||||
|
*
|
||||||
|
* Circumvent this file at your own risk!
|
||||||
|
*
|
||||||
|
* In the future, Gears may automatically define google.gears.* without this
|
||||||
|
* file. Gears may use these objects to transparently fix bugs and compatibility
|
||||||
|
* issues. Applications that use the code below will continue to work seamlessly
|
||||||
|
* when that happens.
|
||||||
|
*/
|
||||||
|
|
||||||
|
(function() {
|
||||||
|
// We are already defined. Hooray!
|
||||||
|
if (window.google && google.gears) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
var factory = null;
|
||||||
|
|
||||||
|
// Firefox
|
||||||
|
if (typeof GearsFactory != 'undefined') {
|
||||||
|
factory = new GearsFactory();
|
||||||
|
} else {
|
||||||
|
// IE
|
||||||
|
try {
|
||||||
|
factory = new ActiveXObject('Gears.Factory');
|
||||||
|
// privateSetGlobalObject is only required and supported on WinCE.
|
||||||
|
if (factory.getBuildInfo().indexOf('ie_mobile') != -1) {
|
||||||
|
factory.privateSetGlobalObject(this);
|
||||||
|
}
|
||||||
|
} catch (e) {
|
||||||
|
// Safari
|
||||||
|
if ((typeof navigator.mimeTypes != 'undefined')
|
||||||
|
&& navigator.mimeTypes["application/x-googlegears"]) {
|
||||||
|
factory = document.createElement("object");
|
||||||
|
factory.style.display = "none";
|
||||||
|
factory.width = 0;
|
||||||
|
factory.height = 0;
|
||||||
|
factory.type = "application/x-googlegears";
|
||||||
|
document.documentElement.appendChild(factory);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// *Do not* define any objects if Gears is not installed. This mimics the
|
||||||
|
// behavior of Gears defining the objects in the future.
|
||||||
|
if (!factory) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Now set up the objects, being careful not to overwrite anything.
|
||||||
|
//
|
||||||
|
// Note: In Internet Explorer for Windows Mobile, you can't add properties to
|
||||||
|
// the window object. However, global objects are automatically added as
|
||||||
|
// properties of the window object in all browsers.
|
||||||
|
if (!window.google) {
|
||||||
|
google = {};
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!google.gears) {
|
||||||
|
google.gears = {factory: factory};
|
||||||
|
}
|
||||||
|
})();
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Class: OpenLayers.Protocol.SQL.Gears
|
||||||
|
* This Protocol stores feature in the browser via the Gears Database module
|
||||||
|
* <http://code.google.com/apis/gears/api_database.html>.
|
||||||
|
*
|
||||||
|
* The main advantage is that all the read, create, update and delete operations
|
||||||
|
* can be done offline.
|
||||||
|
*
|
||||||
|
* Inherits from:
|
||||||
|
* - <OpenLayers.Protocol.SQL>
|
||||||
|
*/
|
||||||
|
OpenLayers.Protocol.SQL.Gears = OpenLayers.Class(OpenLayers.Protocol.SQL, {
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Property: FID_PREFIX
|
||||||
|
* {String}
|
||||||
|
*/
|
||||||
|
FID_PREFIX: '__gears_fid__',
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Property: NULL_GEOMETRY
|
||||||
|
* {String}
|
||||||
|
*/
|
||||||
|
NULL_GEOMETRY: '__gears_null_geometry__',
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Property: NULL_FEATURE_STATE
|
||||||
|
* {String}
|
||||||
|
*/
|
||||||
|
NULL_FEATURE_STATE: '__gears_null_feature_state__',
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Property: jsonParser
|
||||||
|
* {<OpenLayers.Format.JSON>}
|
||||||
|
*/
|
||||||
|
jsonParser: null,
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Property: wktParser
|
||||||
|
* {<OpenLayers.Format.WKT>}
|
||||||
|
*/
|
||||||
|
wktParser: null,
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Property: fidRegExp
|
||||||
|
* {RegExp} Regular expression to know whether a feature was
|
||||||
|
* created in offline mode.
|
||||||
|
*/
|
||||||
|
fidRegExp: null,
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Property: saveFeatureState
|
||||||
|
* {Boolean} Whether to save the feature state (<OpenLayers.State>)
|
||||||
|
* into the database, defaults to true.
|
||||||
|
*/
|
||||||
|
saveFeatureState: true,
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Property: typeOfFid
|
||||||
|
* {String} The type of the feature identifier, either "number" or
|
||||||
|
* "string", defaults to "string".
|
||||||
|
*/
|
||||||
|
typeOfFid: "string",
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Property: db
|
||||||
|
* {GearsDatabase}
|
||||||
|
*/
|
||||||
|
db: null,
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Constructor: OpenLayers.Protocol.SQL.Gears
|
||||||
|
*/
|
||||||
|
initialize: function(options) {
|
||||||
|
if (!this.supported()) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
OpenLayers.Protocol.SQL.prototype.initialize.apply(this, [options]);
|
||||||
|
this.jsonParser = new OpenLayers.Format.JSON();
|
||||||
|
this.wktParser = new OpenLayers.Format.WKT();
|
||||||
|
|
||||||
|
this.fidRegExp = new RegExp('^' + this.FID_PREFIX);
|
||||||
|
this.initializeDatabase();
|
||||||
|
|
||||||
|
|
||||||
|
},
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Method: initializeDatabase
|
||||||
|
*/
|
||||||
|
initializeDatabase: function() {
|
||||||
|
this.db = google.gears.factory.create('beta.database');
|
||||||
|
this.db.open(this.databaseName);
|
||||||
|
this.db.execute(
|
||||||
|
"CREATE TABLE IF NOT EXISTS " + this.tableName +
|
||||||
|
" (fid TEXT UNIQUE, geometry TEXT, properties TEXT," +
|
||||||
|
" state TEXT)");
|
||||||
|
},
|
||||||
|
|
||||||
|
/**
|
||||||
|
* APIMethod: destroy
|
||||||
|
* Clean up the protocol.
|
||||||
|
*/
|
||||||
|
destroy: function() {
|
||||||
|
this.db.close();
|
||||||
|
this.db = null;
|
||||||
|
|
||||||
|
this.jsonParser = null;
|
||||||
|
this.wktParser = null;
|
||||||
|
|
||||||
|
OpenLayers.Protocol.SQL.prototype.destroy.apply(this);
|
||||||
|
},
|
||||||
|
|
||||||
|
/**
|
||||||
|
* APIMethod: supported
|
||||||
|
* Determine whether a browser supports Gears
|
||||||
|
*
|
||||||
|
* Returns:
|
||||||
|
* {Boolean} The browser supports Gears
|
||||||
|
*/
|
||||||
|
supported: function() {
|
||||||
|
return !!(window.google && google.gears);
|
||||||
|
},
|
||||||
|
|
||||||
|
/**
|
||||||
|
* APIMethod: read
|
||||||
|
* Read all features from the database and return a
|
||||||
|
* <OpenLayers.Protocol.Response> instance. If the options parameter
|
||||||
|
* contains a callback attribute, the function is called with the response
|
||||||
|
* as a parameter.
|
||||||
|
*
|
||||||
|
* Parameters:
|
||||||
|
* options - {Object} Optional object for configuring the request; it
|
||||||
|
* can have the {Boolean} property "noFeatureStateReset" which
|
||||||
|
* specifies if the state of features read from the Gears
|
||||||
|
* database must be reset to null, if "noFeatureStateReset"
|
||||||
|
* is undefined or false then each feature's state is reset
|
||||||
|
* to null, if "noFeatureStateReset" is true the feature state
|
||||||
|
* is preserved.
|
||||||
|
*
|
||||||
|
* Returns:
|
||||||
|
* {<OpenLayers.Protocol.Response>} An <OpenLayers.Protocol.Response>
|
||||||
|
* object.
|
||||||
|
*/
|
||||||
|
read: function(options) {
|
||||||
|
OpenLayers.Protocol.prototype.read.apply(this, arguments);
|
||||||
|
options = OpenLayers.Util.applyDefaults(options, this.options);
|
||||||
|
|
||||||
|
var feature, features = [];
|
||||||
|
var rs = this.db.execute("SELECT * FROM " + this.tableName);
|
||||||
|
while (rs.isValidRow()) {
|
||||||
|
feature = this.unfreezeFeature(rs);
|
||||||
|
if (this.evaluateFilter(feature, options.filter)) {
|
||||||
|
if (!options.noFeatureStateReset) {
|
||||||
|
feature.state = null;
|
||||||
|
}
|
||||||
|
features.push(feature);
|
||||||
|
}
|
||||||
|
rs.next();
|
||||||
|
}
|
||||||
|
rs.close();
|
||||||
|
|
||||||
|
var resp = new OpenLayers.Protocol.Response({
|
||||||
|
code: OpenLayers.Protocol.Response.SUCCESS,
|
||||||
|
requestType: "read",
|
||||||
|
features: features
|
||||||
|
});
|
||||||
|
|
||||||
|
if (options && options.callback) {
|
||||||
|
options.callback.call(options.scope, resp);
|
||||||
|
}
|
||||||
|
|
||||||
|
return resp;
|
||||||
|
},
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Method: unfreezeFeature
|
||||||
|
*
|
||||||
|
* Parameters:
|
||||||
|
* row - {ResultSet}
|
||||||
|
*
|
||||||
|
* Returns:
|
||||||
|
* {<OpenLayers.Feature.Vector>}
|
||||||
|
*/
|
||||||
|
unfreezeFeature: function(row) {
|
||||||
|
var feature;
|
||||||
|
var wkt = row.fieldByName('geometry');
|
||||||
|
if (wkt == this.NULL_GEOMETRY) {
|
||||||
|
feature = new OpenLayers.Feature.Vector();
|
||||||
|
} else {
|
||||||
|
feature = this.wktParser.read(wkt);
|
||||||
|
}
|
||||||
|
|
||||||
|
feature.attributes = this.jsonParser.read(
|
||||||
|
row.fieldByName('properties'));
|
||||||
|
|
||||||
|
feature.fid = this.extractFidFromField(row.fieldByName('fid'));
|
||||||
|
|
||||||
|
var state = row.fieldByName('state');
|
||||||
|
if (state == this.NULL_FEATURE_STATE) {
|
||||||
|
state = null;
|
||||||
|
}
|
||||||
|
feature.state = state;
|
||||||
|
|
||||||
|
return feature;
|
||||||
|
},
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Method: extractFidFromField
|
||||||
|
*
|
||||||
|
* Parameters:
|
||||||
|
* field - {String}
|
||||||
|
*
|
||||||
|
* Returns
|
||||||
|
* {String} or {Number} The fid.
|
||||||
|
*/
|
||||||
|
extractFidFromField: function(field) {
|
||||||
|
if (!field.match(this.fidRegExp) && this.typeOfFid == "number") {
|
||||||
|
field = parseFloat(field);
|
||||||
|
}
|
||||||
|
return field;
|
||||||
|
},
|
||||||
|
|
||||||
|
/**
|
||||||
|
* APIMethod: create
|
||||||
|
* Create new features into the database.
|
||||||
|
*
|
||||||
|
* Parameters:
|
||||||
|
* features - {Array({<OpenLayers.Feature.Vector>})} or
|
||||||
|
* {<OpenLayers.Feature.Vector>} The features to create in
|
||||||
|
* the database.
|
||||||
|
* options - {Object} Optional object for configuring the request.
|
||||||
|
*
|
||||||
|
* Returns:
|
||||||
|
* {<OpenLayers.Protocol.Response>} An <OpenLayers.Protocol.Response>
|
||||||
|
* object.
|
||||||
|
*/
|
||||||
|
create: function(features, options) {
|
||||||
|
options = OpenLayers.Util.applyDefaults(options, this.options);
|
||||||
|
|
||||||
|
var resp = this.createOrUpdate(features);
|
||||||
|
resp.requestType = "create";
|
||||||
|
|
||||||
|
if (options && options.callback) {
|
||||||
|
options.callback.call(options.scope, resp);
|
||||||
|
}
|
||||||
|
|
||||||
|
return resp;
|
||||||
|
},
|
||||||
|
|
||||||
|
/**
|
||||||
|
* APIMethod: update
|
||||||
|
* Construct a request updating modified feature.
|
||||||
|
*
|
||||||
|
* Parameters:
|
||||||
|
* features - {Array({<OpenLayers.Feature.Vector>})} or
|
||||||
|
* {<OpenLayers.Feature.Vector>} The features to update in
|
||||||
|
* the database.
|
||||||
|
* options - {Object} Optional object for configuring the request.
|
||||||
|
*
|
||||||
|
* Returns:
|
||||||
|
* {<OpenLayers.Protocol.Response>} An <OpenLayers.Protocol.Response>
|
||||||
|
* object.
|
||||||
|
*/
|
||||||
|
update: function(features, options) {
|
||||||
|
options = OpenLayers.Util.applyDefaults(options, this.options);
|
||||||
|
|
||||||
|
var resp = this.createOrUpdate(features);
|
||||||
|
resp.requestType = "update";
|
||||||
|
|
||||||
|
if (options && options.callback) {
|
||||||
|
options.callback.call(options.scope, resp);
|
||||||
|
}
|
||||||
|
|
||||||
|
return resp;
|
||||||
|
},
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Method: createOrUpdate
|
||||||
|
* Construct a request for updating or creating features in the
|
||||||
|
* database.
|
||||||
|
*
|
||||||
|
* Parameters:
|
||||||
|
* features - {Array({<OpenLayers.Feature.Vector>})} or
|
||||||
|
* {<OpenLayers.Feature.Vector>} The feature to create or update
|
||||||
|
* in the database.
|
||||||
|
*
|
||||||
|
* Returns:
|
||||||
|
* {<OpenLayers.Protocol.Response>} An <OpenLayers.Protocol.Response>
|
||||||
|
* object.
|
||||||
|
*/
|
||||||
|
createOrUpdate: function(features) {
|
||||||
|
if (!(OpenLayers.Util.isArray(features))) {
|
||||||
|
features = [features];
|
||||||
|
}
|
||||||
|
|
||||||
|
var i, len = features.length, feature;
|
||||||
|
var insertedFeatures = new Array(len);
|
||||||
|
|
||||||
|
for (i = 0; i < len; i++) {
|
||||||
|
feature = features[i];
|
||||||
|
var params = this.freezeFeature(feature);
|
||||||
|
this.db.execute(
|
||||||
|
"REPLACE INTO " + this.tableName +
|
||||||
|
" (fid, geometry, properties, state)" +
|
||||||
|
" VALUES (?, ?, ?, ?)",
|
||||||
|
params);
|
||||||
|
|
||||||
|
var clone = feature.clone();
|
||||||
|
clone.fid = this.extractFidFromField(params[0]);
|
||||||
|
insertedFeatures[i] = clone;
|
||||||
|
}
|
||||||
|
|
||||||
|
return new OpenLayers.Protocol.Response({
|
||||||
|
code: OpenLayers.Protocol.Response.SUCCESS,
|
||||||
|
features: insertedFeatures,
|
||||||
|
reqFeatures: features
|
||||||
|
});
|
||||||
|
},
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Method: freezeFeature
|
||||||
|
*
|
||||||
|
* Parameters:
|
||||||
|
* feature - {<OpenLayers.Feature.Vector>}
|
||||||
|
* state - {String} The feature state to store in the database.
|
||||||
|
*
|
||||||
|
* Returns:
|
||||||
|
* {Array}
|
||||||
|
*/
|
||||||
|
freezeFeature: function(feature) {
|
||||||
|
// 2 notes:
|
||||||
|
// - fid might not be a string
|
||||||
|
// - getFeatureStateForFreeze needs the feature fid to it's stored
|
||||||
|
// in the feature here
|
||||||
|
feature.fid = feature.fid != null ?
|
||||||
|
"" + feature.fid : OpenLayers.Util.createUniqueID(this.FID_PREFIX);
|
||||||
|
|
||||||
|
var geometry = feature.geometry != null ?
|
||||||
|
feature.geometry.toString() : this.NULL_GEOMETRY;
|
||||||
|
|
||||||
|
var properties = this.jsonParser.write(feature.attributes);
|
||||||
|
|
||||||
|
var state = this.getFeatureStateForFreeze(feature);
|
||||||
|
|
||||||
|
return [feature.fid, geometry, properties, state];
|
||||||
|
},
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Method: getFeatureStateForFreeze
|
||||||
|
* Get the state of the feature to store into the database.
|
||||||
|
*
|
||||||
|
* Parameters:
|
||||||
|
* feature - {<OpenLayers.Feature.Vector>} The feature.
|
||||||
|
*
|
||||||
|
* Returns
|
||||||
|
* {String} The state
|
||||||
|
*/
|
||||||
|
getFeatureStateForFreeze: function(feature) {
|
||||||
|
var state;
|
||||||
|
if (!this.saveFeatureState) {
|
||||||
|
state = this.NULL_FEATURE_STATE;
|
||||||
|
} else if (this.createdOffline(feature)) {
|
||||||
|
// if the feature was created in offline mode, its
|
||||||
|
// state must remain INSERT
|
||||||
|
state = OpenLayers.State.INSERT;
|
||||||
|
} else {
|
||||||
|
state = feature.state;
|
||||||
|
}
|
||||||
|
return state;
|
||||||
|
},
|
||||||
|
|
||||||
|
/**
|
||||||
|
* APIMethod: delete
|
||||||
|
* Delete features from the database.
|
||||||
|
*
|
||||||
|
* Parameters:
|
||||||
|
* features - {Array({<OpenLayers.Feature.Vector>})} or
|
||||||
|
* {<OpenLayers.Feature.Vector>}
|
||||||
|
* options - {Object} Optional object for configuring the request.
|
||||||
|
* This object is modified and should not be reused.
|
||||||
|
*
|
||||||
|
* Returns:
|
||||||
|
* {<OpenLayers.Protocol.Response>} An <OpenLayers.Protocol.Response>
|
||||||
|
* object.
|
||||||
|
*/
|
||||||
|
"delete": function(features, options) {
|
||||||
|
if (!(OpenLayers.Util.isArray(features))) {
|
||||||
|
features = [features];
|
||||||
|
}
|
||||||
|
|
||||||
|
options = OpenLayers.Util.applyDefaults(options, this.options);
|
||||||
|
|
||||||
|
var i, len, feature;
|
||||||
|
for (i = 0, len = features.length; i < len; i++) {
|
||||||
|
feature = features[i];
|
||||||
|
|
||||||
|
// if saveFeatureState is set to true and if the feature wasn't created
|
||||||
|
// in offline mode we don't delete it in the database but just update
|
||||||
|
// it state column
|
||||||
|
if (this.saveFeatureState && !this.createdOffline(feature)) {
|
||||||
|
var toDelete = feature.clone();
|
||||||
|
toDelete.fid = feature.fid;
|
||||||
|
if (toDelete.geometry) {
|
||||||
|
toDelete.geometry.destroy();
|
||||||
|
toDelete.geometry = null;
|
||||||
|
}
|
||||||
|
toDelete.state = feature.state;
|
||||||
|
this.createOrUpdate(toDelete);
|
||||||
|
} else {
|
||||||
|
this.db.execute(
|
||||||
|
"DELETE FROM " + this.tableName +
|
||||||
|
" WHERE fid = ?", [feature.fid]);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
var resp = new OpenLayers.Protocol.Response({
|
||||||
|
code: OpenLayers.Protocol.Response.SUCCESS,
|
||||||
|
requestType: "delete",
|
||||||
|
reqFeatures: features
|
||||||
|
});
|
||||||
|
|
||||||
|
if (options && options.callback) {
|
||||||
|
options.callback.call(options.scope, resp);
|
||||||
|
}
|
||||||
|
|
||||||
|
return resp;
|
||||||
|
},
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Method: createdOffline
|
||||||
|
* Returns true if the feature had a feature id when it was created in
|
||||||
|
* the Gears database, false otherwise; this is determined by
|
||||||
|
* checking the form of the feature's fid value.
|
||||||
|
*
|
||||||
|
* Parameters:
|
||||||
|
* feature - {<OpenLayers.Feature.Vector>}
|
||||||
|
*
|
||||||
|
* Returns:
|
||||||
|
* {Boolean}
|
||||||
|
*/
|
||||||
|
createdOffline: function(feature) {
|
||||||
|
return (typeof feature.fid == "string" &&
|
||||||
|
!!(feature.fid.match(this.fidRegExp)));
|
||||||
|
},
|
||||||
|
|
||||||
|
/**
|
||||||
|
* APIMethod: commit
|
||||||
|
* Go over the features and for each take action
|
||||||
|
* based on the feature state. Possible actions are create,
|
||||||
|
* update and delete.
|
||||||
|
*
|
||||||
|
* Parameters:
|
||||||
|
* features - {Array({<OpenLayers.Feature.Vector>})}
|
||||||
|
* options - {Object} Object whose possible keys are "create", "update",
|
||||||
|
* "delete", "callback" and "scope", the values referenced by the
|
||||||
|
* first three are objects as passed to the "create", "update", and
|
||||||
|
* "delete" methods, the value referenced by the "callback" key is
|
||||||
|
* a function which is called when the commit operation is complete
|
||||||
|
* using the scope referenced by the "scope" key.
|
||||||
|
*
|
||||||
|
* Returns:
|
||||||
|
* {Array({<OpenLayers.Protocol.Response>})} An array of
|
||||||
|
* <OpenLayers.Protocol.Response> objects, one per request made
|
||||||
|
* to the database.
|
||||||
|
*/
|
||||||
|
commit: function(features, options) {
|
||||||
|
var opt, resp = [], nRequests = 0, nResponses = 0;
|
||||||
|
|
||||||
|
function callback(resp) {
|
||||||
|
if (++nResponses < nRequests) {
|
||||||
|
resp.last = false;
|
||||||
|
}
|
||||||
|
this.callUserCallback(options, resp);
|
||||||
|
}
|
||||||
|
|
||||||
|
var feature, toCreate = [], toUpdate = [], toDelete = [];
|
||||||
|
for (var i = features.length - 1; i >= 0; i--) {
|
||||||
|
feature = features[i];
|
||||||
|
switch (feature.state) {
|
||||||
|
case OpenLayers.State.INSERT:
|
||||||
|
toCreate.push(feature);
|
||||||
|
break;
|
||||||
|
case OpenLayers.State.UPDATE:
|
||||||
|
toUpdate.push(feature);
|
||||||
|
break;
|
||||||
|
case OpenLayers.State.DELETE:
|
||||||
|
toDelete.push(feature);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (toCreate.length > 0) {
|
||||||
|
nRequests++;
|
||||||
|
opt = OpenLayers.Util.applyDefaults(
|
||||||
|
{"callback": callback, "scope": this},
|
||||||
|
options.create
|
||||||
|
);
|
||||||
|
resp.push(this.create(toCreate, opt));
|
||||||
|
}
|
||||||
|
if (toUpdate.length > 0) {
|
||||||
|
nRequests++;
|
||||||
|
opt = OpenLayers.Util.applyDefaults(
|
||||||
|
{"callback": callback, "scope": this},
|
||||||
|
options.update
|
||||||
|
);
|
||||||
|
resp.push(this.update(toUpdate, opt));
|
||||||
|
}
|
||||||
|
if (toDelete.length > 0) {
|
||||||
|
nRequests++;
|
||||||
|
opt = OpenLayers.Util.applyDefaults(
|
||||||
|
{"callback": callback, "scope": this},
|
||||||
|
options["delete"]
|
||||||
|
);
|
||||||
|
resp.push(this["delete"](toDelete, opt));
|
||||||
|
}
|
||||||
|
|
||||||
|
return resp;
|
||||||
|
},
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Method: clear
|
||||||
|
* Removes all rows of the table.
|
||||||
|
*/
|
||||||
|
clear: function() {
|
||||||
|
this.db.execute("DELETE FROM " + this.tableName);
|
||||||
|
},
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Method: callUserCallback
|
||||||
|
* This method is called from within commit each time a request is made
|
||||||
|
* to the database, it is responsible for calling the user-supplied
|
||||||
|
* callbacks.
|
||||||
|
*
|
||||||
|
* Parameters:
|
||||||
|
* options - {Object} The map of options passed to the commit call.
|
||||||
|
* resp - {<OpenLayers.Protocol.Response>}
|
||||||
|
*/
|
||||||
|
callUserCallback: function(options, resp) {
|
||||||
|
var opt = options[resp.requestType];
|
||||||
|
if (opt && opt.callback) {
|
||||||
|
opt.callback.call(opt.scope, resp);
|
||||||
|
}
|
||||||
|
if (resp.last && options.callback) {
|
||||||
|
options.callback.call(options.scope);
|
||||||
|
}
|
||||||
|
},
|
||||||
|
|
||||||
|
CLASS_NAME: "OpenLayers.Protocol.SQL.Gears"
|
||||||
|
});
|
||||||
|
|||||||
@@ -1,6 +1,7 @@
|
|||||||
<html>
|
<html>
|
||||||
<head>
|
<head>
|
||||||
<script src="../../OLLoader.js"></script>
|
<script src="../../../OLLoader.js"></script>
|
||||||
|
<script src="../../../../lib/deprecated.js"></script>
|
||||||
<script type="text/javascript">
|
<script type="text/javascript">
|
||||||
|
|
||||||
function test_initialize(t) {
|
function test_initialize(t) {
|
||||||
@@ -188,7 +188,6 @@
|
|||||||
<li>Protocol/HTTP.html</li>
|
<li>Protocol/HTTP.html</li>
|
||||||
<li>Protocol/Script.html</li>
|
<li>Protocol/Script.html</li>
|
||||||
<li>Protocol/SQL.html</li>
|
<li>Protocol/SQL.html</li>
|
||||||
<li>Protocol/SQL/Gears.html</li>
|
|
||||||
<li>Protocol/WFS.html</li>
|
<li>Protocol/WFS.html</li>
|
||||||
<li>Protocol/SOS.html</li>
|
<li>Protocol/SOS.html</li>
|
||||||
<li>Renderer.html</li>
|
<li>Renderer.html</li>
|
||||||
@@ -232,5 +231,6 @@
|
|||||||
<li>deprecated/Layer/WFS.html</li>
|
<li>deprecated/Layer/WFS.html</li>
|
||||||
<li>deprecated/Layer/WMS.html</li>
|
<li>deprecated/Layer/WMS.html</li>
|
||||||
<li>deprecated/Layer/WMS/Post.html</li>
|
<li>deprecated/Layer/WMS/Post.html</li>
|
||||||
|
<li>deprecated/Protocol/SQL/Gears.html</li>
|
||||||
<li>deprecated/Tile/WFS.html</li>
|
<li>deprecated/Tile/WFS.html</li>
|
||||||
</ul>
|
</ul>
|
||||||
|
|||||||
Reference in New Issue
Block a user