org.dominokit.jackson.ser.array.ArrayJsonSerializer Maven / Gradle / Ivy
/*
* Copyright 2013 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 org.dominokit.jackson.ser.array;
import org.dominokit.jackson.JsonSerializationContext;
import org.dominokit.jackson.JsonSerializer;
import org.dominokit.jackson.JsonSerializerParameters;
import org.dominokit.jackson.stream.JsonWriter;
/**
* Default {@link org.dominokit.jackson.JsonSerializer} implementation for array.
*
* @param Type of the elements inside the array
*/
public class ArrayJsonSerializer extends JsonSerializer {
/**
* newInstance
*
* @param serializer {@link org.dominokit.jackson.JsonSerializer} used to serialize the objects
* inside the array.
* @param Type of the elements inside the array
* @return a new instance of {@link org.dominokit.jackson.ser.array.ArrayJsonSerializer}
*/
public static ArrayJsonSerializer newInstance(JsonSerializer serializer) {
return new ArrayJsonSerializer(serializer);
}
private final JsonSerializer serializer;
/**
* Constructor for ArrayJsonSerializer.
*
* @param serializer {@link org.dominokit.jackson.JsonSerializer} used to serialize the objects
* inside the array.
*/
protected ArrayJsonSerializer(JsonSerializer 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;
}
if (ctx.isWriteSingleElemArraysUnwrapped() && values.length == 1) {
serializer.serialize(writer, values[0], ctx, params);
} else {
writer.beginArray();
for (T value : values) {
serializer.serialize(writer, value, ctx, params);
}
writer.endArray();
}
}
}