/*---------------- FILE HEADER ------------------------------------------
This file is part of deegree.
Copyright (C) 2001-2006 by:
EXSE, Department of Geography, University of Bonn
http://www.giub.uni-bonn.de/deegree/
lat/lon GmbH
http://www.lat-lon.de
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; either
version 2.1 of the License, or (at your option) any later version.
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.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Contact:
Andreas Poth
lat/lon GmbH
Aennchenstr. 19
53177 Bonn
Germany
E-Mail: poth@lat-lon.de
Prof. Dr. Klaus Greve
Department of Geography
University of Bonn
Meckenheimer Allee 166
53115 Bonn
Germany
E-Mail: greve@giub.uni-bonn.de
---------------------------------------------------------------------------*/
package org.deegree.graphics.sld;
import java.io.Serializable;
import java.util.ArrayList;
import org.deegree.framework.xml.Marshallable;
import org.deegree.model.feature.Feature;
import org.deegree.model.filterencoding.Expression;
import org.deegree.model.filterencoding.FilterEvaluationException;
/**
*
*
*
* @version $Revision: 1.10 $
* @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
* @author last edited by: $Author: poth $
*
* @version 1.0. $Revision: 1.10 $
*
* @since 2.0
*/
public class ParameterValueType implements Serializable, Marshallable {
private ArrayList components = new ArrayList();
/**
* Constructs a new <tt>ParameterValueType</tt>.
* <p>
*
* @param components
* <tt>String</tt>s/<tt>Expression</tt> s that make up the
* contents of the <tt>ParameterValueType</tt>
*/
public ParameterValueType(Object[] components) {
setComponents(components);
}
/**
* Returns the contents (mix of <tt>String</tt>/<tt>Expression</tt>
* -objects) of this <tt>ParameterValueType</tt>.
* <p>
*
* @return mix of <tt>String</tt>/<tt>Expression</tt> -objects
*
*/
public Object[] getComponents() {
return components.toArray(new Object[components.size()]);
}
/**
* Sets the contents (mix of <tt>String</tt>/<tt>Expression</tt>
* -objects) of this <tt>ParameterValueType</tt>.
* <p>
*
* @param components
* mix of <tt>String</tt> and <tt>Expression</tt> -objects
*/
public void setComponents(Object[] components) {
this.components.clear();
if (components != null) {
this.components.ensureCapacity( components.length );
for (int i = 0; i < components.length; i++) {
this.components.add(components[i]);
}
}
}
/**
* Concatenates a component (a<tt>String</tt> or an <tt>Expression</tt>
* -object) to this <tt>ParameterValueType</tt>.
* <p>
*
* @param component
* either a <tt>String</tt> or an <tt>Expression</tt> -object
*/
public void addComponent(Object component) {
components.add(component);
}
/**
* Removes a component (a<tt>String</tt> or an <tt>Expression</tt>
* -object) from this <tt>ParameterValueType</tt>.
* <p>
*
* @param component
* either a <tt>String</tt> or an <tt>Expression</tt> -object
*/
public void removeComponent(Object component) {
components.remove(components.indexOf(component));
}
/**
* Returns the actual <tt>String</tt> value of this object. Expressions
* are evaluated according to the given <tt>Feature</tt> -instance.
* <p>
*
* @param feature
* used for the evaluation of the underlying
* 'wfs:Expression'-elements
* @return the (evaluated) String value
* @throws FilterEvaluationException
* if the evaluation fails
*/
public String evaluate(Feature feature) throws FilterEvaluationException {
StringBuffer sb = new StringBuffer();
for (int i = 0; i < components.size(); i++) {
Object component = components.get(i);
if (component instanceof Expression) {
sb.append(((Expression) component).evaluate(feature));
} else if (component != null && component instanceof String) {
sb.append(((String) component).trim());
} else {
sb.append(component);
}
}
return sb.toString();
}
/**
* exports the content of the ParameterValueType as XML formated String
*
* @return xml representation of the ParameterValueType
*/
public String exportAsXML() {
StringBuffer sb = new StringBuffer();
for (int i = 0; i < components.size(); i++) {
Object component = components.get(i);
if (component instanceof Expression) {
sb.append(((Expression) component).toXML());
} else if (component != null && component instanceof String) {
sb.append(((String) component).trim());
} else {
sb.append(component);
}
}
return sb.toString();
}
}
/* ********************************************************************
Changes to this class. What the people have been up to:
$Log: ParameterValueType.java,v $
Revision 1.10 2006/11/27 09:07:52 poth
JNI integration of proj4 has been removed. The CRS functionality now will be done by native deegree code.
Revision 1.9 2006/09/25 20:29:28 poth
changes required for extracting PropertyPath's used by a Style
Revision 1.8 2006/07/29 08:51:12 poth
references to deprecated classes removed
Revision 1.7 2006/07/04 19:09:34 poth
comments corrected - code formatation
********************************************************************** */