/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you 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.elasticsearch.common.io.stream;
import java.io.IOException;
/**
* Wraps a {@link StreamInput} and associates it with a {@link NamedWriteableRegistry}
*/
public class NamedWriteableAwareStreamInput extends FilterStreamInput {
private final NamedWriteableRegistry namedWriteableRegistry;
public NamedWriteableAwareStreamInput(StreamInput delegate, NamedWriteableRegistry namedWriteableRegistry) {
super(delegate);
this.namedWriteableRegistry = namedWriteableRegistry;
}
@Override
<C> C readNamedWriteable(Class<C> categoryClass) throws IOException {
String name = readString();
NamedWriteable<? extends C> namedWriteable = namedWriteableRegistry.getPrototype(categoryClass, name);
return namedWriteable.readFrom(this);
}
}