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With inspiration from other libraries
/*
*
* Copyright 2015 Jonathan Shook
*
* 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 io.virtdata.libbasics.shared.from_long.to_long;
import io.virtdata.annotations.DeprecatedFunction;
import io.virtdata.annotations.ThreadSafeMapper;
import io.virtdata.core.murmur.Murmur3F;
import java.util.function.LongUnaryOperator;
/**
* Yield a long value which is the result of hashing and modulo division
* with the specified divisor.
*/
@ThreadSafeMapper
@DeprecatedFunction("This function is easily replaced with other simpler functions.")
public class Murmur3DivToLong implements LongUnaryOperator {
private ThreadLocal murmur3f_TL = ThreadLocal.withInitial(Murmur3F::new);
private DivideToLong divideToLongMapper;
public Murmur3DivToLong(long divisor) {
this.divideToLongMapper = new DivideToLong(divisor);
}
@Override
public long applyAsLong(long input) {
long divided= divideToLongMapper.applyAsLong(input);
Murmur3F murmur3f = murmur3f_TL.get();
murmur3f.update((int) (divided % Integer.MAX_VALUE));
return murmur3f.getValue();
}
}