/*
* 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.factory;
import com.gs.collections.api.block.function.Function;
public final class LongPredicates
{
private static final Predicates<Long> IS_ODD = new LongIsOdd();
private static final Predicates<Long> IS_EVEN = new LongIsEven();
private static final Predicates<Long> IS_POSITIVE = new LongIsPositive();
private static final Predicates<Long> IS_NEGATIVE = new LongIsNegative();
private static final Predicates<Long> IS_ZERO = new LongIsZero();
private LongPredicates()
{
throw new AssertionError("Suppress default constructor for noninstantiability");
}
public static Predicates<Long> isOdd()
{
return IS_ODD;
}
public static Predicates<Long> isEven()
{
return IS_EVEN;
}
public static Predicates<Long> isPositive()
{
return IS_POSITIVE;
}
public static Predicates<Long> isNegative()
{
return IS_NEGATIVE;
}
public static Predicates<Long> isZero()
{
return IS_ZERO;
}
public static <T> Predicates<T> attributeIsEven(Function<T, Long> function)
{
return Predicates.attributePredicate(function, LongPredicates.isEven());
}
public static <T> Predicates<T> attributeIsOdd(Function<T, Long> function)
{
return Predicates.attributePredicate(function, LongPredicates.isOdd());
}
public static <T> Predicates<T> attributeIsZero(Function<T, Long> function)
{
return Predicates.attributePredicate(function, LongPredicates.isZero());
}
public static <T> Predicates<T> attributeIsPositive(Function<T, Long> function)
{
return Predicates.attributePredicate(function, LongPredicates.isPositive());
}
public static <T> Predicates<T> attributeIsNegative(Function<T, Long> function)
{
return Predicates.attributePredicate(function, LongPredicates.isNegative());
}
private static class LongIsOdd extends Predicates<Long>
{
private static final long serialVersionUID = 1L;
public boolean accept(Long l)
{
return l.longValue() % 2 != 0;
}
}
private static class LongIsEven extends Predicates<Long>
{
private static final long serialVersionUID = 1L;
public boolean accept(Long l)
{
return l.longValue() % 2 == 0;
}
}
private static class LongIsPositive extends Predicates<Long>
{
private static final long serialVersionUID = 1L;
public boolean accept(Long l)
{
return l.longValue() > 0;
}
}
private static class LongIsNegative extends Predicates<Long>
{
private static final long serialVersionUID = 1L;
public boolean accept(Long l)
{
return l.longValue() < 0;
}
}
private static class LongIsZero extends Predicates<Long>
{
private static final long serialVersionUID = 1L;
public boolean accept(Long l)
{
return l.longValue() == 0;
}
}
}