org.dominokit.jackson.deser.collection.IterableJsonDeserializer 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.deser.collection;
import java.util.ArrayList;
import java.util.Collection;
import org.dominokit.jackson.JsonDeserializationContext;
import org.dominokit.jackson.JsonDeserializer;
import org.dominokit.jackson.JsonDeserializerParameters;
import org.dominokit.jackson.stream.JsonReader;
import org.dominokit.jackson.stream.JsonToken;
/**
* Default {@link org.dominokit.jackson.JsonDeserializer} implementation for {@link
* java.lang.Iterable}. The deserialization process returns an {@link java.util.ArrayList}.
*
* @param Type of the elements inside the {@link java.lang.Iterable}
*/
public class IterableJsonDeserializer extends BaseIterableJsonDeserializer, T> {
/**
* newInstance
*
* @param deserializer {@link org.dominokit.jackson.JsonDeserializer} used to deserialize the
* objects inside the {@link java.lang.Iterable}.
* @param Type of the elements inside the {@link java.lang.Iterable}
* @return a new instance of {@link
* org.dominokit.jackson.deser.collection.IterableJsonDeserializer}
*/
public static IterableJsonDeserializer newInstance(JsonDeserializer deserializer) {
return new IterableJsonDeserializer(deserializer);
}
/**
* @param deserializer {@link JsonDeserializer} used to deserialize the objects inside the {@link
* Iterable}.
*/
private IterableJsonDeserializer(JsonDeserializer deserializer) {
super(deserializer);
}
/** {@inheritDoc} */
@Override
public Iterable doDeserialize(
JsonReader reader, JsonDeserializationContext ctx, JsonDeserializerParameters params) {
if (JsonToken.BEGIN_ARRAY == reader.peek()) {
Collection result = new ArrayList();
reader.beginArray();
while (JsonToken.END_ARRAY != reader.peek()) {
result.add(deserializer.deserialize(reader, ctx, params));
}
reader.endArray();
return result;
} else if (ctx.isAcceptSingleValueAsArray()) {
Collection result = new ArrayList();
result.add(deserializer.deserialize(reader, ctx, params));
return result;
} else {
throw ctx.traceError(
"Cannot deserialize a java.lang.Iterable out of " + reader.peek() + " token", reader);
}
}
}