/*
* Copyright 2014 Nicolas Morel
*
* 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 com.github.nmorel.gwtjackson.client.ser.array.dd;
import com.github.nmorel.gwtjackson.client.JsonSerializationContext;
import com.github.nmorel.gwtjackson.client.JsonSerializer;
import com.github.nmorel.gwtjackson.client.JsonSerializerParameters;
import com.github.nmorel.gwtjackson.client.stream.JsonWriter;
/**
* Default {@link JsonSerializer} implementation for 2D array.
*
* @param <T> Type of the elements inside the array
* @author Nicolas Morel
* @version $Id: $
*/
public class Array2dJsonSerializer<T> extends JsonSerializer<T[][]> {
/**
* <p>newInstance</p>
*
* @param serializer {@link JsonSerializer} used to serialize the objects inside the array.
* @param <T> Type of the elements inside the array
* @return a new instance of {@link Array2dJsonSerializer}
*/
public static <T> Array2dJsonSerializer<T> newInstance( JsonSerializer<T> serializer ) {
return new Array2dJsonSerializer<T>( serializer );
}
private final JsonSerializer<T> serializer;
/**
* <p>Constructor for Array2dJsonSerializer.</p>
*
* @param serializer {@link JsonSerializer} used to serialize the objects inside the array.
*/
protected Array2dJsonSerializer( JsonSerializer<T> serializer ) {
if ( null == serializer ) {
throw new IllegalArgumentException( "serializer cannot be null" );
}
this.serializer = serializer;
}
/** {@inheritDoc} */
@Override
protected boolean isEmpty( T[][] value ) {
return null == value || value.length == 0;
}
/** {@inheritDoc} */
@Override
public void doSerialize( JsonWriter writer, T[][] values, JsonSerializationContext ctx, JsonSerializerParameters params ) {
if ( !ctx.isWriteEmptyJsonArrays() && values.length == 0 ) {
writer.cancelName();
return;
}
writer.beginArray();
for ( T[] array : values ) {
writer.beginArray();
for ( T value : array ) {
serializer.serialize( writer, value, ctx, params );
}
writer.endArray();
}
writer.endArray();
}
}