/*
* JBoss, Home of Professional Open Source
*
* Copyright 2009 Red Hat, Inc. and/or its affiliates.
*
* 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.xnio;
import java.io.
IOException;
/**
* Abstract base class for {@code Result}s which translate from one type to another.
*
* @param <T> the result type to accept
* @param <O> the result type to pass to the delegate
*/
public abstract class
TranslatingResult<T, O> implements
Result<T> {
private final
Result<O>
output;
protected
TranslatingResult(final
Result<O>
output) {
this.
output =
output;
}
public boolean
setException(final
IOException exception) {
return
output.
setException(
exception);
}
public boolean
setCancelled() {
return
output.
setCancelled();
}
public boolean
setResult(final T
result) {
try {
return
output.
setResult(
translate(
result));
} catch (
IOException e) {
return
output.
setException(
e);
}
}
protected abstract O
translate(T
input) throws
IOException;
}