/* $Id: ListSerializer.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.ArrayList;
import java.util.List;
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 List<Object>.
*/
public class ListSerializer implements ImportExportHelper
{
private final static String FIELD_NAME = "values";
/**
* 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( ArrayList.class, type );
type.setComponentType( List.class );
type.setImportExportHelper( new ListSerializer( type, field ) );
type.putValidator( field, Validator_object.get( 1 ) );
type.lock();
}
/**
* @param type
* @param field
*/
public ListSerializer( 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[] values = (Object[]) struct.get( field );
List<Object> list = new ArrayList<Object>( values.length );
for( Object value: values)
list.add( value );
return list;
}
@SuppressWarnings("unchecked")
public StructValue exportValue( ValueFactory vf, Object value )
{
List<Object> list = (List<Object>) value;
Object[] values = new Object[list.size()];
list.toArray( values );
StructValue struct = new StructValue( type, vf );
struct.put( field, values );
return struct;
}
}