f7f338e265
git-svn-id: http://svn.openlayers.org/branches/openlayers/2.7@8012 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
88 lines
2.4 KiB
JavaScript
88 lines
2.4 KiB
JavaScript
/* Copyright (c) 2006-2008 MetaCarta, Inc., published under the Clear BSD
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* license. See http://svn.openlayers.org/trunk/openlayers/license.txt for the
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* full text of the license. */
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/**
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* @requires OpenLayers/Protocol.js
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*/
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/**
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* Class: OpenLayers.Protocol.SQL
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* Abstract SQL protocol class. Not to be instantiated directly. Use
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* one of the SQL protocol subclasses instead.
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*
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* Inherits from:
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* - <OpenLayers.Protocol>
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*/
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OpenLayers.Protocol.SQL = OpenLayers.Class(OpenLayers.Protocol, {
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/**
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* APIProperty: databaseName
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* {String}
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*/
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databaseName: 'ol',
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/**
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* APIProperty: tableName
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* Name of the database table into which Features should be saved.
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*/
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tableName: "ol_vector_features",
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/**
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* Property: postReadFiltering
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* {Boolean} Whether the filter (if there's one) must be applied after
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* the features have been read from the database; for example the
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* BBOX strategy passes the read method a BBOX spatial filter, if
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* postReadFiltering is true every feature read from the database
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* will go through the BBOX spatial filter, which can be costly;
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* defaults to true.
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*/
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postReadFiltering: true,
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/**
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* Constructor: OpenLayers.Protocol.SQL
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*/
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initialize: function(options) {
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OpenLayers.Protocol.prototype.initialize.apply(this, [options]);
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},
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/**
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* APIMethod: destroy
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* Clean up the protocol.
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*/
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destroy: function() {
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OpenLayers.Protocol.prototype.destroy.apply(this);
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},
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/**
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* APIMethod: supported
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* This should be overridden by specific subclasses
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*
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* Returns:
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* {Boolean} Whether or not the browser supports the SQL backend
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*/
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supported: function() {
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return false;
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},
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/**
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* Method: evaluateFilter
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* If postReadFiltering is true evaluate the filter against the feature
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* and return the result of the evaluation, otherwise return true.
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*
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* Parameters:
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* {<OpenLayers.Feature.Vector>} The feature.
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* {<OpenLayers.Filter>} The filter.
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*
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* Returns:
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* {Boolean} true if postReadFiltering if false, the result of the
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* filter evaluation otherwise.
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*/
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evaluateFilter: function(feature, filter) {
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return filter && this.postReadFiltering ?
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filter.evaluate(feature) : true;
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},
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CLASS_NAME: "OpenLayers.Protocol.SQL"
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});
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