/* $Id: SetSerializer.java 742162 2009-02-08 20:54:34Z dixson $
*
* Copyright 2007-2008 Cisco Systems Inc.
*
* 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 etch.bindings.java.util;
import java.util.HashSet;
import java.util.Set;
import etch.bindings.java.msg.Field;
import etch.bindings.java.msg.ImportExportHelper;
import etch.bindings.java.msg.StructValue;
import etch.bindings.java.msg.Type;
import etch.bindings.java.msg.ValueFactory;
import etch.bindings.java.support.Class2TypeMap;
import etch.bindings.java.support.Validator_object;
/**
* Serializer for generic Set<Object>.
*/
public class SetSerializer implements ImportExportHelper
{
private final static String FIELD_NAME = "keys";
/**
* Defines custom fields in the value factory so that the importer
* can find them.
* @param type
* @param class2type
*/
public static void init( Type type, Class2TypeMap class2type )
{
Field field = type.getField( FIELD_NAME );
class2type.put( HashSet.class, type );
type.setComponentType( Set.class );
type.setImportExportHelper( new SetSerializer( type, field ) );
type.putValidator( field, Validator_object.get( 1 ) );
type.lock();
}
/**
* @param type
* @param field
*/
public SetSerializer( Type type, Field field )
{
this.type = type;
this.field = field;
}
private final Type type;
private final Field field;
public Object importValue( StructValue struct )
{
struct.checkType( type );
Object[] keys = (Object[]) struct.get( field );
Set<Object> set = new HashSet<Object>( (keys.length*4+2)/3, .75f );
for (Object key: keys)
set.add( key );
return set;
}
@SuppressWarnings("unchecked")
public StructValue exportValue( ValueFactory vf, Object value )
{
Set<Object> set = (Set<Object>) value;
Object[] keys = new Object[set.size()];
set.toArray( keys );
StructValue struct = new StructValue( type, vf );
struct.put( field, keys );
return struct;
}
}