/
LongFieldComparatorImpl.java
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/
LongFieldComparatorImpl.java
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/**
*
* Copyright (c) 2006-2017, Speedment, Inc. All Rights Reserved.
*
* 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.speedment.runtime.field.internal.comparator;
import com.speedment.runtime.field.LongField;
import com.speedment.runtime.field.comparator.FieldComparator;
import javax.annotation.Generated;
import static com.speedment.common.invariant.NullUtil.requireNonNulls;
import static java.util.Objects.requireNonNull;
/**
* @param <ENTITY> entity type
* @param <D> database type
*
* @author Emil Forslund
* @since 3.0.0
*/
@Generated(value = "Speedment")
public final class LongFieldComparatorImpl<ENTITY, D> implements LongFieldComparator<ENTITY, D> {
private final LongField<ENTITY, D> field;
private boolean reversed;
public LongFieldComparatorImpl(LongField<ENTITY, D> field) {
this.field = requireNonNull(field);
this.reversed = false;
}
@Override
public LongField<ENTITY, D> getField() {
return field;
}
@Override
public boolean isReversed() {
return reversed;
}
@Override
public FieldComparator<ENTITY, Long> reversed() {
reversed = !reversed;
return this;
}
@Override
public int compare(ENTITY first, ENTITY second) {
requireNonNulls(first, second);
final long a = field.getAsLong(first);
final long b = field.getAsLong(second);
return applyReversed(a - b);
}
private int applyReversed(long compare) {
if (compare == 0) {
return 0;
} else {
if (reversed) {
if (compare > 0) {
return -1;
} else {
return 1;
}
} else {
if (compare > 0) {
return 1;
} else {
return -1;
}
}
}
}
}