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Adding support for reading and writing spatial filters with Within, Contains, and Intersects elements. Thanks pvalsecc for the original patch. r=ahocevar (closes #1959)

Browse Source 
git-svn-id: http://svn.openlayers.org/trunk/openlayers@8921 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
Tim Schaub
2009-03-01 05:40:21 +00:00
parent 9359cf0dc1
commit 97e55039ea
8 changed files with 356 additions and 17 deletions
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4
lib/OpenLayers/Filter/Spatial.js
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@@ -24,6 +24,8 @@ OpenLayers.Filter.Spatial = OpenLayers.Class(OpenLayers.Filter, {
* - OpenLayers.Filter.Spatial.BBOX
* - OpenLayers.Filter.Spatial.INTERSECTS
* - OpenLayers.Filter.Spatial.DWITHIN
* - OpenLayers.Filter.Spatial.WITHIN
* - OpenLayers.Filter.Spatial.CONTAINS
*/
type: null,
@@ -107,3 +109,5 @@ OpenLayers.Filter.Spatial = OpenLayers.Class(OpenLayers.Filter, {
OpenLayers.Filter.Spatial.BBOX = "BBOX";
OpenLayers.Filter.Spatial.INTERSECTS = "INTERSECTS";
OpenLayers.Filter.Spatial.DWITHIN = "DWITHIN";
OpenLayers.Filter.Spatial.WITHIN = "WITHIN";
OpenLayers.Filter.Spatial.CONTAINS = "CONTAINS";

74
lib/OpenLayers/Format/Filter/v1.js
View File

@@ -178,11 +178,49 @@ OpenLayers.Format.Filter.v1 = OpenLayers.Class(OpenLayers.Format.XML, {
},
"UpperBoundary": function(node, filter) {
filter.upperBoundary = this.readOgcExpression(node);
},
"Intersects": function(node, obj) {
this.readSpatial(node, obj, OpenLayers.Filter.Spatial.INTERSECTS);
},
"Within": function(node, obj) {
this.readSpatial(node, obj, OpenLayers.Filter.Spatial.WITHIN);
},
"Contains": function(node, obj) {
this.readSpatial(node, obj, OpenLayers.Filter.Spatial.CONTAINS);
},
"DWithin": function(node, obj) {
this.readSpatial(node, obj, OpenLayers.Filter.Spatial.DWITHIN);
},
"Distance": function(node, obj) {
obj.distance = parseInt(this.getChildValue(node));
obj.distanceUnits = node.getAttribute("units");
}
}
},
/**
* Method: readSpatial
*
* Read a {<OpenLayers.Filter.Spatial>} filter.
*
* Parameters:
* node - {DOMElement} A DOM element that contains an ogc:expression.
* obj - {Object} The target object.
* type - {String} One of the OpenLayers.Filter.Spatial.* constants.
*
* Returns:
* {<OpenLayers.Filter.Spatial>} The created filter.
*/
readSpatial: function(node, obj, type) {
var filter = new OpenLayers.Filter.Spatial({
type: type
});
this.readChildNodes(node, filter);
filter.value = filter.components[0];
delete filter.components;
obj.filters.push(filter);
},
/**
* Method: readOgcExpression
* Limited support for OGC expressions.
@@ -343,29 +381,31 @@ OpenLayers.Format.Filter.v1 = OpenLayers.Class(OpenLayers.Format.XML, {
this.writeNode("Literal", filter.upperBoundary, node);
return node;
},
"INTERSECTS": function(filter) {
return this.writeSpatial(filter, "Intersects");
},
"WITHIN": function(filter) {
return this.writeSpatial(filter, "Within");
},
"CONTAINS": function(filter) {
return this.writeSpatial(filter, "Contains");
},
"DWITHIN": function(filter) {
var node = this.createElementNSPlus("ogc:DWithin");
this.writeNode("PropertyName", filter, node);
var child = this.writeNode("feature:_geometry", filter.value);
node.appendChild(child.firstChild);
var node = this.writeSpatial(filter, "DWithin");
this.writeNode("Distance", filter, node);
return node;
},
"INTERSECTS": function(filter) {
var node = this.createElementNSPlus("ogc:Intersects");
this.writeNode("PropertyName", filter, node);
var child = this.writeNode("feature:_geometry", filter.value);
node.appendChild(child.firstChild);
return node;
},
"Distance": function(filter) {
return this.createElementNSPlus("ogc:Distance",
{attributes: {units: filter.distanceUnits},
value: filter.distance});
return this.createElementNSPlus("ogc:Distance", {
attributes: {
units: filter.distanceUnits
},
value: filter.distance
});
}
}
},
/**
* Method: getFilterType
*/
@@ -396,6 +436,8 @@ OpenLayers.Format.Filter.v1 = OpenLayers.Class(OpenLayers.Format.XML, {
"~": "PropertyIsLike",
"BBOX": "BBOX",
"DWITHIN": "DWITHIN",
"WITHIN": "WITHIN",
"CONTAINS": "CONTAINS",
"INTERSECTS": "INTERSECTS"
},

29
lib/OpenLayers/Format/Filter/v1_0_0.js
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@@ -111,6 +111,35 @@ OpenLayers.Format.Filter.v1_0_0 = OpenLayers.Class(
},
/**
* Method: writeSpatial
*
* Read a {<OpenLayers.Filter.Spatial>} filter and converts it into XML.
*
* Parameters:
* filter - {<OpenLayers.Filter.Spatial>} The filter.
* name - {String} Name of the generated XML element.
*
* Returns:
* {DOMElement} The created XML element.
*/
writeSpatial: function(filter, name) {
var node = this.createElementNSPlus("ogc:"+name);
this.writeNode("PropertyName", filter, node);
var child;
if(filter.value instanceof OpenLayers.Geometry) {
child = this.writeNode("feature:_geometry", filter.value).firstChild;
} else {
child = this.writeNode("gml:Box", filter.value);
}
if(filter.projection) {
child.setAttribute("srsName", filter.projection);
}
node.appendChild(child);
return node;
},
CLASS_NAME: "OpenLayers.Format.Filter.v1_0_0"
});

28
lib/OpenLayers/Format/Filter/v1_1_0.js
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@@ -125,6 +125,34 @@ OpenLayers.Format.Filter.v1_1_0 = OpenLayers.Class(
"feature": OpenLayers.Format.GML.v3.prototype.writers["feature"]
},
/**
* Method: writeSpatial
*
* Read a {<OpenLayers.Filter.Spatial>} filter and converts it into XML.
*
* Parameters:
* filter - {<OpenLayers.Filter.Spatial>} The filter.
* name - {String} Name of the generated XML element.
*
* Returns:
* {DOMElement} The created XML element.
*/
writeSpatial: function(filter, name) {
var node = this.createElementNSPlus("ogc:"+name);
this.writeNode("PropertyName", filter, node);
var child;
if(filter.value instanceof OpenLayers.Geometry) {
child = this.writeNode("feature:_geometry", filter.value).firstChild;
} else {
child = this.writeNode("gml:Envelope", filter.value);
}
if(filter.projection) {
child.setAttribute("srsName", filter.projection);
}
node.appendChild(child);
return node;
},
CLASS_NAME: "OpenLayers.Format.Filter.v1_1_0"
});