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bugfix for self-referential loop + test
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danikov
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Apr 19, 2012
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/** | ||
* Licensed to jclouds, Inc. (jclouds) under one or more | ||
* contributor license agreements. See the NOTICE file | ||
* distributed with this work for additional information | ||
* regarding copyright ownership. jclouds 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.jclouds.util; | ||
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import com.google.common.base.Function; | ||
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/** | ||
* For wrapping covariant functions for passing to non-covariant methods | ||
* | ||
* @author danikov | ||
*/ | ||
public class ConcreteFunction<F,T> implements Function<F, T> { | ||
private final Function<? super F, ? extends T> delegate; | ||
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public static <F,T> ConcreteFunction<F,T> wrap(Function<? super F, ? extends T> delegate) { | ||
return new ConcreteFunction<F, T>(delegate); | ||
} | ||
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public ConcreteFunction(Function<? super F, ? extends T> delegate) { | ||
this.delegate = delegate; | ||
} | ||
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@Override | ||
public T apply(F input) { | ||
return delegate.apply(input); | ||
} | ||
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} |
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