svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.remoteclient / src / main / java / org / gvsig / remoteclient / wfs / filters / filterencoding / FilterEncoding.java @ 40559
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/**
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* gvSIG. Desktop Geographic Information System.
|
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*
|
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* Copyright (C) 2007-2013 gvSIG Association.
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*
|
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* This program is free software; you can redistribute it and/or
|
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* modify it under the terms of the GNU General Public License
|
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* as published by the Free Software Foundation; either version 3
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* of the License, or (at your option) any later version.
|
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*
|
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* This program is distributed in the hope that it will be useful,
|
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
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* GNU General Public License for more details.
|
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*
|
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* You should have received a copy of the GNU General Public License
|
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* along with this program; if not, write to the Free Software
|
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* For any additional information, do not hesitate to contact us
|
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* at info AT gvsig.com, or visit our website www.gvsig.com.
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*/
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|
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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*
|
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* This program is free software; you can redistribute it and/or
|
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* modify it under the terms of the GNU General Public License
|
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* as published by the Free Software Foundation; either version 2
|
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* of the License, or (at your option) any later version.
|
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*
|
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* This program is distributed in the hope that it will be useful,
|
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
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* GNU General Public License for more details.
|
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*
|
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* You should have received a copy of the GNU General Public License
|
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* along with this program; if not, write to the Free Software
|
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
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*
|
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* For more information, contact:
|
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*
|
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* Generalitat Valenciana
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* Conselleria d'Infraestructures i Transport
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* Av. Blasco Ib??ez, 50
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* 46010 VALENCIA
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* SPAIN
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*
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* +34 963862235
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* gvsig@gva.es
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* www.gvsig.gva.es
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*
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* or
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*
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* IVER T.I. S.A
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* Salamanca 50
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* 46005 Valencia
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* Spain
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*
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* +34 963163400
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* dac@iver.es
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*/
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package org.gvsig.remoteclient.wfs.filters.filterencoding; |
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import java.util.ArrayList; |
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import java.util.Hashtable; |
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import java.util.Iterator; |
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import java.util.Set; |
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import org.gvsig.compat.CompatLocator; |
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import org.gvsig.compat.lang.StringUtils; |
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import org.gvsig.remoteclient.wfs.WFSStatus; |
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import org.gvsig.remoteclient.wfs.edition.WFSTTags; |
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import org.gvsig.remoteclient.wfs.filters.AbstractFilter; |
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import org.gvsig.remoteclient.wfs.filters.BinaryTree; |
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import org.gvsig.remoteclient.wfs.filters.BinaryTree.Node; |
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import org.gvsig.remoteclient.wfs.filters.DefaultSQLExpressionFormat; |
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import org.gvsig.remoteclient.wfs.filters.ISQLExpressionFormat; |
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import org.gvsig.remoteclient.wfs.filters.filterencoding.wfs_1_0_0.EnvelopeFEQuery1_0_0; |
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import org.gvsig.remoteclient.wfs.filters.filterencoding.wfs_1_1_0.EnvelopeFEQuery1_1_0; |
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import org.gvsig.remoteclient.wfs.filters.operations.WFSEnvelopeFilterOperation; |
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import org.gvsig.remoteclient.wfs.filters.operations.WFSGeometryFilterOperation; |
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import org.gvsig.remoteclient.wfs.filters.operations.WFSSpatialFilterOperation; |
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/**
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* This class implements the Filter Encoding Language. It is used to
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* create querys in this language
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*
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* Name: OpenGIS? Filter Encoding Implementation Specification
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* Version: 1.1.0
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* Project Document: OGC 04-095
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* @see http://portal.opengeospatial.org/files/?artifact_id=8340
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*
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* @author Jorge Piera Llodra (piera_jor@gva.es)
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*/
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public class FilterEncoding extends AbstractFilter { |
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public static final int RELATIONSHIP_PROPERTY = 0; |
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public static final int RELATIONSHIP_VAUES = 1; |
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|
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private StringBuffer currentQuery = null; |
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//Operation types
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private static final int OPERATION_PROPERTYNAME = 0; |
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private static final int OPERATION_LITERAL = 1; |
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|
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//Filter namespace.
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private String nameSpacePrefix = null; |
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private String nameSpaceLocation = null; |
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|
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//If the Filter can have blanckSpaces
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private boolean hasBlankSpaces = true; |
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private String defaultBlankSpace = "%20"; |
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//This character must be replaced by any set of characters (typically "*")
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private String wildCardChar = null; |
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//This character must be replaced by one character (typically "?")
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private String singleChar = null; |
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//Escape character (typically "\")
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private String escapeChar = null; |
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//Default values
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public static final String DEFAULT_NAMESPACE_PREFIX = "ogc"; |
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public static final String DEFAULT_WILDCARD = "*"; |
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public static final String DEFAULT_SINGLECHAR = "?"; |
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public static final String DEFAULT_ESCAPE = "\\"; |
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public static final String DEFAULT_NAMESPACE = "xmlns:ogc=\"http://www.opengis.net/ogc\""; |
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private Hashtable filterAttributes = new Hashtable(); |
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|
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/**
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* If the namespace XML is qualified
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*/
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private boolean isQualified = false; |
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private static final StringUtils stringUtils = CompatLocator.getStringUtils(); |
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/**
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* Create a new Filter Encoding Parser
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*
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*
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* @param nameSpacePrefix
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* Filter namespace. (typically "ogc")
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* @param wildCardChar
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* This character must be replaced by any set of characters (typically "*")
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* @param singleChar
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* This character must be replaced by one character (typically "?")
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* @param escape
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* Escape character
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* @param filterAttribute Sometimes, "Field" label needs an attribute.
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*/
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public FilterEncoding(ISQLExpressionFormat formatter,String namesPacePrefix, String wildCard, String singleChar, String escape, Hashtable filterAttributes) { |
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super(formatter);
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if (namesPacePrefix == null){ |
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setQualified(false);
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}else{
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setQualified(true);
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} |
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this.wildCardChar = wildCard;
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this.singleChar = singleChar;
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this.escapeChar = escape;
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this.filterAttributes = filterAttributes;
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} |
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/**
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* Create a new Filter Encoding Parser
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* @param formatter
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*/
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public FilterEncoding(ISQLExpressionFormat formatter) {
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this(formatter,null,DEFAULT_WILDCARD,DEFAULT_SINGLECHAR, |
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DEFAULT_ESCAPE,new Hashtable()); |
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} |
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/**
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* Create a new Filter Encoding Parser
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*/
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FilterEncoding() { |
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this(new DefaultSQLExpressionFormat()); |
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} |
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/**
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* Create a new Filter Encoding Parser
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*/
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public FilterEncoding(WFSStatus status) {
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this();
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this.nameSpacePrefix = status.getNamespacePrefix();
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this.nameSpaceLocation = status.getNamespaceLocation();
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setQueryByAttribute(status.getFilterByAttribute()); |
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clearSpatialFilters(); |
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addSpatialFilter(status.getFilterByArea()); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.remoteClient.filterEncoding.QueryLanguage#toString(org.gvsig.remoteClient.filterEncoding.BinaryTree)
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*/
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public String toString(BinaryTree tree, String version) { |
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//If is a filter by ids...
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StringBuffer idQuery = null; |
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if (getIds() != null){ |
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idQuery = new StringBuffer(); |
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ArrayList ids = getIds();
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for (int i=0 ; i<ids.size() ; i++){ |
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if (ids.get(i) != null){ |
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Hashtable attributes = new Hashtable(); |
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attributes.put("fid","\"" + ids.get(i).toString() + "\""); |
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idQuery.append(setTag("FeatureId", attributes, null)); |
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} |
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} |
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return enclosesWithFilterTag(idQuery.toString());
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} |
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//If is a filter by attributes...
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String filterQuery = null; |
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if ((tree.getRoot() == null) && (getSpatialFiltersCount() == 0)){ |
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return null; |
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} |
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if (tree.getRoot() != null){ |
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currentQuery = new StringBuffer(); |
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filterQuery = getFilterNode(tree.getRoot()); |
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if (getSpatialFiltersCount() == 0){ |
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return enclosesWithFilterTag(filterQuery);
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} |
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} |
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//If is a filter by area
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String bboxQuery = null; |
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if (getSpatialFiltersCount() > 0){ |
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for (int i=0 ; i<getSpatialFiltersCount() ; i++){ |
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WFSSpatialFilterOperation spatialFilter = getSpatialFilterAt(i); |
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SpatialFEQuery feQuery = null;
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if (spatialFilter instanceof WFSGeometryFilterOperation){ |
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feQuery = new GeometryFEQuery((WFSGeometryFilterOperation)spatialFilter);
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}else if (spatialFilter instanceof WFSEnvelopeFilterOperation){ |
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//TODO add this for a manager
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if (version.equals("1.0.0")){ |
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feQuery = new EnvelopeFEQuery1_0_0((WFSEnvelopeFilterOperation)spatialFilter);
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}else{
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feQuery = new EnvelopeFEQuery1_1_0((WFSEnvelopeFilterOperation)spatialFilter);
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} |
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} |
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//If there is a spatial query
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if (feQuery != null){ |
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bboxQuery = feQuery.getFilterEncoding(); |
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if (tree.getRoot() == null){ |
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String filter_bbox = enclosesWithFilterTag(bboxQuery);
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return filter_bbox;
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} |
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} |
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} |
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} |
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return enclosesWithFilterTag(filterQuery + bboxQuery);
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} |
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/**
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* Gets the filter code from a node
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* @param node
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*/
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private String getFilterNode(Node node){ |
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if (node.isField()){
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return getExpression(node.getValue());
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}else{
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String left = ""; |
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String rigth = ""; |
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if (node.getLeftNode() != null){ |
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left = getFilterNode(node.getLeftNode()); |
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} |
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if (node.getRigthNode() != null){ |
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rigth = getFilterNode(node.getRigthNode()); |
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} |
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int operationCode = getLogicalOperator(node.getValue());
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String operation = getLogicalOperator(operationCode);
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return enterLabel(left+rigth, operation);
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} |
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} |
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/**
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* Parses a expresion like 'A op B' and returns the
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* expresion using the filter encoding language
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* @param expression
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* @return
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*/
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private String getExpression(String expression){ |
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String[] words = stringUtils.split(expression, " "); |
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//Param
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String param = words[0]; |
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if (param.charAt(0) == '"'){ |
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param = param.substring(1,param.length());
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} |
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if (param.charAt(param.length()-1) == '"'){ |
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param = param.substring(0,param.length()-1); |
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} |
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//Operator
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String operator = words[1]; |
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//Value
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String value = words[2]; |
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for (int i=3 ; i<words.length ; i++){ |
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value = value + " " + words[i];
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} |
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if (value.charAt(0) == '\''){ |
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value = value.substring(1,value.length());
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} |
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if (value.charAt(value.length()-1) == '\''){ |
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value = value.substring(0,value.length()-1); |
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} |
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int operatorCode = getRelationalOperator(operator);
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operator = getRelationalOperator(operatorCode); |
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return createExpression(operator,param,value);
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} |
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|
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/**
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* It writes a "PropertyIsXXX" part of a filtyer encoding query
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*
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*
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* @return The part of the query
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* @param property Possible Values: PropertIsLike, PropertyIsLess, PropertyIsGreater,... See
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* the Filter Encoding documentation
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* @param parameter Parameter name
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* @param value Parameter value
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* @param type Values: "P" (to comparate two propertyes) or "L" (to comparate one property
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* and one literal value)
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*/
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private String createExpression(String property, String parameter, String value) { |
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String cadena = ""; |
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cadena = "<" + WFSTTags.OGC_NAMESPACE_PREFIX + ":" + property; |
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if (property.equals("PropertyIsLike")) { |
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if (wildCardChar != null) { |
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cadena = cadena + " wildCard=\"" + this.wildCardChar + "\""; |
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} |
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if (singleChar != null) { |
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cadena = cadena + " singleChar=\"" + this.singleChar + "\""; |
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} |
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if (escapeChar != null) { |
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cadena = cadena + " escape=\"" + this.escapeChar + "\""; |
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} |
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} |
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cadena = cadena + ">" + enterLabel(nameSpacePrefix + ":" + parameter, "PropertyName"); |
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cadena = cadena + enterLabel(value, "Literal");
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return cadena + "</" + WFSTTags.OGC_NAMESPACE_PREFIX + ":" + property + ">"; |
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} |
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/**
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* Envuelve a una pregunta con una etiqueta
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*
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*
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* @return String : parte de la query en el lenguaje soportado
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* @param pregunta Pregunta a envolver
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* @param etiqueta Nombre de la etiqueta
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*/
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private String enterLabel(String value, String tagName) { |
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if (tagName.equals("Filter") && (!(filterAttributes.isEmpty()))) { |
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return setTag(tagName,filterAttributes,value);
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} else {
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return setTag(tagName,null,value); |
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} |
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} |
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|
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/**
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* Envolves a value with an XML tag
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*
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* @return String
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* XML tag with its value
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* @param tagName
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* XML tag name
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* @param attributes
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* XML tag attributes
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* @param value
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* Tag value
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*/
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public String setTag(String tagName, Hashtable attributes, String value) { |
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StringBuffer tag = new StringBuffer(); |
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|
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tag.append("<");
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tag.append(WFSTTags.OGC_NAMESPACE_PREFIX + ":");
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tag.append(tagName); |
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if (attributes != null){ |
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Set keys = attributes.keySet();
|
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if (attributes.size() > 0){ |
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Iterator it = keys.iterator();
|
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while (it.hasNext()){
|
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String key = (String)it.next(); |
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if (hasBlankSpaces){
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tag.append(" ");
|
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}else{
|
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tag.append(defaultBlankSpace); |
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} |
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tag.append(key + "=" + (String)attributes.get(key)); |
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|
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} |
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} |
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} |
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if (value == null){ |
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tag.append("/>");
|
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}else{
|
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tag.append(">" + value);
|
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tag.append("</");
|
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tag.append(WFSTTags.OGC_NAMESPACE_PREFIX + ":");
|
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tag.append(tagName); |
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tag.append(">");
|
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} |
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return tag.toString();
|
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} |
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|
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|
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/**
|
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* Encloses a query with the filter tag
|
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* @param query
|
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* @return
|
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*/
|
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private String enclosesWithFilterTag(String query){ |
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StringBuffer filter = new StringBuffer(); |
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filter.append("<ogc:Filter");
|
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if (!isQualified){
|
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filter.append(" ");
|
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addNamespace(filter, WFSTTags.OGC_NAMESPACE_PREFIX, WFSTTags.OGC_NAMESPACE); |
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addNamespace(filter, WFSTTags.GML_NAMESPACE_PREFIX, WFSTTags.GML_NAMESPACE); |
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if (nameSpacePrefix != null){ |
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addNamespace(filter, nameSpacePrefix, nameSpaceLocation); |
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} |
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filter.append("xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" ");
|
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filter.append("xsi:schemaLocation=\"http://www.opengis.net/ogc ../filter/1.0.0/filter.xsd http://www.opengis.net/gml ../gml/2.1.2/geometry.xsd\"");
|
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} |
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filter.append(">");
|
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filter.append(query); |
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filter.append("</ogc:Filter>");
|
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return filter.toString();
|
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} |
424 |
|
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private void addNamespace(StringBuffer buffer, String nameSpacePrefix, String nameSpaceLocation){ |
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buffer.append(WFSTTags.XMLNS + ":" + nameSpacePrefix + "=\"" + nameSpaceLocation + "\" "); |
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} |
428 |
|
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/*
|
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* (non-Javadoc)
|
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* @see org.gvsig.remoteClient.filterEncoding.AQueryLanguage#getLogicOperator(int)
|
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*/
|
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public String getLogicalOperator(int operator) { |
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switch (operator){
|
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case LOGICAL_OPERATOR_AND:
|
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return "And"; |
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case LOGICAL_OPERATOR_OR:
|
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return "Or"; |
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case LOGICAL_OPERATOR_NOT:
|
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return "Not"; |
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default:
|
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return "And"; |
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} |
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} |
445 |
|
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/*
|
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* (non-Javadoc)
|
448 |
* @see org.gvsig.remoteClient.filterEncoding.AQueryLanguage#getRelationalOperator(int)
|
449 |
*/
|
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public String getRelationalOperator(int operator) { |
451 |
switch (operator){
|
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case RELATIONAL_OPERATOR_IS_EQUALS_TO:
|
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return "PropertyIsEqualTo"; |
454 |
case RELATIONAL_OPERATOR_IS_NOT_EQUALS_TO:
|
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return "PropertyIsNotEqualTo"; |
456 |
case RELATIONAL_OPERATOR_IS_LESS_THAN:
|
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return "PropertyIsLessThan"; |
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case RELATIONAL_OPERATOR_IS_GREATER_THAN:
|
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return "PropertyIsGreaterThan"; |
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case RELATIONAL_OPERATOR_IS_LESS_THAN_OR_EQUAL_TO:
|
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return "PropertyIsLessThanOrEqualTo"; |
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case RELATIONAL_OPERATOR_IS_GREATER_THAN_OR_EQUAL_TO:
|
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return "PropertyIsGreaterThanOrEqualTo"; |
464 |
case RELATIONAL_OPERATOR_IS_LIKE:
|
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return "PropertyIsLike"; |
466 |
case RELATIONAL_OPERATOR_IS_NULL:
|
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return "PropertyIsNull"; |
468 |
case RELATIONAL_OPERATOR_IS_BETWEEN:
|
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return "PropertyIsBetween"; |
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default:
|
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return "PropertyIsLike"; |
472 |
} |
473 |
} |
474 |
|
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/*
|
476 |
* (non-Javadoc)
|
477 |
* @see org.gvsig.remoteClient.filterEncoding.AQueryLanguage#getGeometricOperator(int)
|
478 |
*/
|
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public String getGeometricOperator(int operator) { |
480 |
switch (operator){
|
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case GEOMETRIC_OPERATOR_EQUALS:
|
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return "Equals"; |
483 |
case GEOMETRIC_OPERATOR_DISJOINT:
|
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return "Disjoint"; |
485 |
case GEOMETRIC_OPERATOR_TOUCHES:
|
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return "Touches"; |
487 |
case GEOMETRIC_OPERATOR_WITHIN:
|
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return "Within"; |
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case GEOMETRIC_OPERATOR_OVERLAPS:
|
490 |
return "Overlaps"; |
491 |
case GEOMETRIC_OPERATOR_CROSSES:
|
492 |
return "Crosses"; |
493 |
case GEOMETRIC_OPERATOR_INTERSECT:
|
494 |
return "Intersect"; |
495 |
case GEOMETRIC_OPERATOR_CONTAINS:
|
496 |
return "Contains"; |
497 |
case GEOMETRIC_OPERATOR_DWITHIN:
|
498 |
return "Dwithin"; |
499 |
case GEOMETRIC_OPERATOR_BEYOND:
|
500 |
return "Beyond"; |
501 |
case GEOMETRIC_OPERATOR_BBOX:
|
502 |
return "BBOX"; |
503 |
default:
|
504 |
return "Equals"; |
505 |
} |
506 |
|
507 |
} |
508 |
|
509 |
public String getSeparator(int separator) { |
510 |
return null; |
511 |
} |
512 |
|
513 |
/**
|
514 |
* @param isQualified the isQualified to set
|
515 |
*/
|
516 |
public void setQualified(boolean isQualified) { |
517 |
this.isQualified = isQualified;
|
518 |
if (isQualified){
|
519 |
nameSpacePrefix = DEFAULT_NAMESPACE_PREFIX + ":";
|
520 |
}else{
|
521 |
nameSpacePrefix = "";
|
522 |
} |
523 |
} |
524 |
|
525 |
|
526 |
/**
|
527 |
* @param namepacePrefix the namepacePrefix to set
|
528 |
*/
|
529 |
public void setNamepacePrefix(String namepacePrefix) { |
530 |
if ((namepacePrefix == null) || (namepacePrefix.equals(""))){ |
531 |
this.nameSpacePrefix = ""; |
532 |
}else{
|
533 |
this.nameSpacePrefix = namepacePrefix + ":"; |
534 |
} |
535 |
} |
536 |
|
537 |
|
538 |
/**
|
539 |
* @param hasBlankSpaces the hasBlankSpaces to set
|
540 |
*/
|
541 |
public void setHasBlankSpaces(boolean hasBlankSpaces) { |
542 |
this.hasBlankSpaces = hasBlankSpaces;
|
543 |
} |
544 |
} |