[GeoNetwork-commit] SF.net SVN: geonetwork:[4733] sandbox/3.0.x/geonetwork-persistence-ebrim/ src/main/java/org/geonetwork/search/ebrim/filter/During.java

[<jos...@us...>]

Revision: 4733
          http://geonetwork.svn.sourceforge.net/geonetwork/?rev=4733&view=rev
Author:   josegar74
Date:     2009-07-31 07:52:49 +0000 (Fri, 31 Jul 2009)

Log Message:
-----------
Date during function

Added Paths:
-----------
    sandbox/3.0.x/geonetwork-persistence-ebrim/src/main/java/org/geonetwork/search/ebrim/filter/During.java

Added: sandbox/3.0.x/geonetwork-persistence-ebrim/src/main/java/org/geonetwork/search/ebrim/filter/During.java
===================================================================
--- sandbox/3.0.x/geonetwork-persistence-ebrim/src/main/java/org/geonetwork/search/ebrim/filter/During.java	                        (rev 0)
+++ sandbox/3.0.x/geonetwork-persistence-ebrim/src/main/java/org/geonetwork/search/ebrim/filter/During.java	2009-07-31 07:52:49 UTC (rev 4733)
@@ -0,0 +1,92 @@
+//=============================================================================
+//===	Copyright (C) 2008 European Space Agency (ESA).
+//===
+//===	This program is free software; you can redistribute it and/or modify
+//===	it under the terms of the GNU General Public License as published by
+//===	the Free Software Foundation; either version 2 of the License, or (at
+//===	your option) any later version.
+//===
+//===	This program 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
+//===	General Public License for more details.
+//===
+//===	You should have received a copy of the GNU General Public License
+//===	along with this program; if not, write to the Free Software
+//===	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+//===
+//===	Contact: Jeroen Ticheler - E-mail: geo...@os...
+
+//==============================================================================
+package org.geonetwork.search.ebrim.filter;
+        
+import org.geotools.filter.FunctionExpressionImpl;
+import org.geotools.filter.FunctionExpression;
+import org.geotools.filter.LiteralExpressionImpl;
+import org.apache.lucene.index.Term;
+import org.apache.lucene.search.RangeQuery;
+import org.geonetwork.search.ebrim.filter.queryfields.Field;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Class to convert a During function call in filter to a lucene RangeQuery
+ *
+ * Example of function call:
+ * 
+ * <ogc:Function name="During">
+ *      <ogc:PropertyName>rim:AuditableEvent/@timestamp</ogc:PropertyName>
+ *      <ogc:Literal>
+ *          <gml:TimePeriod>
+ *              <gml:beginPosition>2005-08-01T00:00-08:00</gml:beginPosition>
+ *              <gml:endPosition indeterminatePosition="now" />
+ *          </gml:TimePeriod>
+ *      </ogc:Literal>
+ * </ogc:Function>
+ *
+ * @author Jose
+ */
+public class During extends FunctionExpressionImpl implements
+        FunctionExpression {
+
+    public During() {
+        super("During");
+    }
+
+    public int getArgCount() {
+        return 2;
+    }
+
+    public Object evaluate(Object feature) {
+        Object arg0;
+        LiteralExpressionImpl arg1;
+
+        try {
+            arg0 = getExpression(0);
+            arg1 = (LiteralExpressionImpl) getExpression(1);
+
+            Map dates = (HashMap) arg1.getValue();
+            String beginPosition = (String) dates.get("beginPosition");
+            String endPosition = (String) dates.get("endPosition");
+
+            // Resolve query property
+            String name = arg0.toString();
+            PropertyResolver propertyResolver = PropertyResolverFactory.getPropertyResolver(name);
+            Field fld =  propertyResolver.resolveProperty();
+
+            Term lower = null;
+            if (!beginPosition.equals("")) lower = new Term(fld.getFieldName(), beginPosition);
+
+            Term upper = null;
+            if (!endPosition.equals("")) upper = new Term(fld.getFieldName(), endPosition);
+
+			return fld.process(new RangeQuery(lower, upper, true));
+
+        } catch (Exception e) // probably a type error
+        {
+            throw new IllegalArgumentException(
+                    "Filter Function problem for function arguments");
+        }
+    }
+}
\ No newline at end of file


This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.