/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2002-2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.geotools.filter;
import java.util.logging.Logger;
import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;
/**
* Uses SAX to extact a GetFeature query from and incoming GetFeature request
* XML stream.
*
* <p>Note that this Handler extension ignores Filters completely and must be
* chained as a parent to the PredicateFilter method in order to recognize them.
* If it is not chained, it will still generate valid queries, but with no
* filtering whatsoever.</p>
*
* @author Rob Hranac, Vision for New York
*
* @source $URL$
* @version 0.9 beta, 11/01/01
*/
public class TestFilterHandler
implements ContentHandler, FilterHandler {
/** Standard logging class */
private static final Logger LOGGER = org.geotools.util.logging.Logging.getLogger("org.geotools.defaultcore");
/********************************************************
Local tracking methods to deal with incoming XML stream
********************************************************/
/** Tracks tag we are currently inside */
private org.opengis.filter.Filter filter = null;
public TestFilterHandler () {
}
/********************************************
Start of SAX Content Handler Methods
most of these are unused at the moment
no namespace awareness, yet
********************************************/
/** Notes the document locator. */
public void setDocumentLocator (Locator locator) {
}
/** Notes the start of the document. */
public void startDocument()
throws SAXException {
//_log.info("start of document");
}
/** Notes the start of the document. */
public void endDocument()
throws SAXException {
//_log.info( "at end of document");
}
/** Notes processing instructions. */
public void processingInstruction(String target, String data)
throws SAXException {
}
/** Notes start of prefix mappings. */
public void startPrefixMapping(String prefix, String uri) {
}
/** Notes end of prefix mappings. */
public void endPrefixMapping(String prefix) {
}
/**
* Notes the start of the element and sets type names and query attributes.
*
* @param namespaceURI URI for namespace appended to element.
* @param localName Local name of element.
* @param rawName Raw name of element.
* @param atts Element attributes.
*/
public void startElement(String namespaceURI,
String localName,
String rawName,
Attributes atts)
throws SAXException {
}
/**
* Notes the end of the element exists query or bounding box.
*
* @param namespaceURI URI for namespace appended to element.
* @param localName Local name of element.
* @param rawName Raw name of element.
*/
public void endElement(String namespaceURI, String localName, String rawName)
throws SAXException {
}
/**
* Checks if inside parsed element and adds its contents to the appropriate
* variable.
*
* @param ch URI for namespace appended to element.
* @param start Local name of element.
* @param length Raw name of element.
*/
public void characters(char[] ch, int start, int length)
throws SAXException {
}
/**
* Notes ignorable whitespace.
*
* @param ch URI for namespace appended to element.
* @param start Local name of element.
* @param length Raw name of element.
*/
public void ignorableWhitespace(char[] ch, int start, int length)
throws SAXException {
}
/**
* Notes skipped entity.
*
* @param name Name of skipped entity.
*
*/
public void skippedEntity(String name)
throws SAXException {
}
/**
* Gets filter.
*
* @param filter (OGC WFS) Filter from (SAX) filter..
*/
public void filter(org.opengis.filter.Filter filter) {
LOGGER.finer("found filter: " + filter.toString());
this.filter = filter;
}
/**
* Gets filter.
*
* @return (OGC WFS) Filter from (SAX) filter..
*/
public org.opengis.filter.Filter getFilter() {
return this.filter;
}
}