org.dominokit.jackson.deser.array.dd.Array2dJsonDeserializer Maven / Gradle / Ivy
/*
* 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 org.dominokit.jackson.deser.array.dd;
import java.util.List;
import org.dominokit.jackson.JsonDeserializationContext;
import org.dominokit.jackson.JsonDeserializer;
import org.dominokit.jackson.JsonDeserializerParameters;
import org.dominokit.jackson.stream.JsonReader;
/** Default {@link org.dominokit.jackson.JsonDeserializer} implementation for 2D array. */
public class Array2dJsonDeserializer extends AbstractArray2dJsonDeserializer {
/**
* A functional interface for creating a 2 dimensional array.
*
* @param the type of the array elements.
*/
public interface Array2dCreator {
T[][] create(int first, int second);
}
/**
* newInstance
*
* @param deserializer {@link org.dominokit.jackson.JsonDeserializer} used to deserialize the
* objects inside the array.
* @param arrayCreator {@link
* org.dominokit.jackson.deser.array.dd.Array2dJsonDeserializer.Array2dCreator} used to create
* a new array
* @param Type of the elements inside the {@link java.util.AbstractCollection}
* @return a new instance of {@link org.dominokit.jackson.deser.array.dd.Array2dJsonDeserializer}
*/
public static Array2dJsonDeserializer newInstance(
JsonDeserializer deserializer, Array2dCreator arrayCreator) {
return new Array2dJsonDeserializer(deserializer, arrayCreator);
}
private final JsonDeserializer deserializer;
private final Array2dCreator array2dCreator;
/**
* Constructor for Array2dJsonDeserializer.
*
* @param deserializer {@link org.dominokit.jackson.JsonDeserializer} used to deserialize the
* objects inside the array.
* @param array2dCreator {@link
* org.dominokit.jackson.deser.array.dd.Array2dJsonDeserializer.Array2dCreator} used to create
* a new array
*/
protected Array2dJsonDeserializer(
JsonDeserializer deserializer, Array2dCreator array2dCreator) {
if (null == deserializer) {
throw new IllegalArgumentException("deserializer cannot be null");
}
if (null == array2dCreator) {
throw new IllegalArgumentException("Cannot deserialize an array without an array2dCreator");
}
this.deserializer = deserializer;
this.array2dCreator = array2dCreator;
}
/** {@inheritDoc} */
@Override
protected T[][] doDeserialize(
JsonReader reader, JsonDeserializationContext ctx, JsonDeserializerParameters params) {
List> list = deserializeIntoList(reader, ctx, deserializer, params);
if (list.isEmpty()) {
return array2dCreator.create(0, 0);
}
List firstList = list.get(0);
if (firstList.isEmpty()) {
return array2dCreator.create(list.size(), 0);
}
T[][] array = array2dCreator.create(list.size(), firstList.size());
int i = 0;
for (List innerList : list) {
array[i] = innerList.toArray(array[i]);
i++;
}
return array;
}
/**
* {
*
* @param referenceName {@link java.lang.String} name of the reference
* @param reference {@link java.lang.Object} reference to set
* @param value value to set the reference to.
* @param ctx {@link JsonDeserializationContext} Context for the full deserialization process
*/
@Override
public void setBackReference(
String referenceName, Object reference, T[][] value, JsonDeserializationContext ctx) {
if (null != value && value.length > 0) {
for (T[] array : value) {
for (T val : array) {
deserializer.setBackReference(referenceName, reference, val, ctx);
}
}
}
}
}