/*
* Copyright 2002-2009 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.sf.json.filters;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import net.sf.json.util.PropertyFilter;
/**
* @author Andres Almiray <[email protected]>
*/
public abstract class MappingPropertyFilter implements PropertyFilter {
private Map filters = new HashMap();
public MappingPropertyFilter() {
this( null );
}
public MappingPropertyFilter( Map filters ) {
if( filters != null ){
for( Iterator i = filters.entrySet()
.iterator(); i.hasNext(); ){
Map.Entry entry = (Map.Entry) i.next();
Object key = entry.getKey();
Object filter = entry.getValue();
if( filter instanceof PropertyFilter ){
this.filters.put( key, filter );
}
}
}
}
public void addPropertyFilter( Object target, PropertyFilter filter ) {
if( filter != null ){
filters.put( target, filter );
}
}
public boolean apply( Object source, String name, Object value ) {
for( Iterator i = filters.entrySet()
.iterator(); i.hasNext(); ){
Map.Entry entry = (Map.Entry) i.next();
Object key = entry.getKey();
if( keyMatches( key, source, name, value ) ){
PropertyFilter filter = (PropertyFilter) entry.getValue();
return filter.apply( source, name, value );
}
}
return false;
}
public void removePropertyFilter( Object target ) {
if( target != null ){
filters.remove( target );
}
}
protected abstract boolean keyMatches( Object key, Object source, String name, Object value );
}
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