/**
* Copyright 2013 Turn, 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 com.turn.shapeshifter;
import com.fasterxml.jackson.databind.JsonNode;
import com.turn.shapeshifter.ShapeshifterProtos.JsonType;
/**
* Static utilities pertaining to {@link Transformer} instances.
*
* @author jsilland
*/
public final class Transformers {
private Transformers() {
}
private static class NullFormatTransformer implements FormatTransformer {
private final Transformer transformer;
private NullFormatTransformer(Transformer transformer) {
this.transformer = transformer;
}
/**
* {@inheritDoc}
*/
@Override
public JsonType getJsonType() {
return transformer.getJsonType();
}
/**
* {@inheritDoc}
*/
@Override
public JsonNode serialize(Object value) {
return transformer.serialize(value);
}
/**
* {@inheritDoc}
*/
@Override
public Object parse(JsonNode node) {
return transformer.parse(node);
}
/**
* {@inheritDoc}
*/
@Override
public String getExternalFormat() {
return null;
}
}
/**
* Returns a new formatting transformer that delegates to a simple
* transformer but returns {@code null} for the format value.
*
* @param transformer the transformer to wrap
*/
public static FormatTransformer format(Transformer transformer) {
return new NullFormatTransformer(transformer);
}
}