/*
* Copyright 2011 Goldman Sachs.
*
* 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.gs.collections.impl.block.function.primitive;
import com.gs.collections.api.block.function.Function;
import com.gs.collections.api.block.function.primitive.DoubleFunction;
/**
* DoubleFunctionImpl is an abstract implementation of the DoubleFunction interface which can be subclassed
* explicitly or as an anonymous inner class, without needing to override the valueOf method defined in
* Function.
*/
public abstract class DoubleFunctionImpl<T>
implements Function<T, Double>, DoubleFunction<T>
{
private static final long serialVersionUID = 1L;
private static final Double DOUBLE_ZERO = 0.0;
public Double valueOf(T anObject)
{
double value = this.doubleValueOf(anObject);
return value == 0.0 ? DOUBLE_ZERO : Double.valueOf(value);
}
}