org.sirix.diff.DepthCounter Maven / Gradle / Ivy
/**
* Copyright (c) 2011, University of Konstanz, Distributed Systems Group All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted
* provided that the following conditions are met: * Redistributions of source code must retain the
* above copyright notice, this list of conditions and the following disclaimer. * Redistributions
* in binary form must reproduce the above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other materials provided with the distribution.
* * Neither the name of the University of Konstanz nor the names of its contributors may be used to
* endorse or promote products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.sirix.diff;
import com.google.common.base.MoreObjects;
/**
* Container for transaction cursor depths in both the old and new revision.
*
* @author Johannes Lichtenberger, University of Konstanz
*
*/
final class DepthCounter {
/** Depth in new revision. */
private int mNewDepth;
/** Depth in old revision. */
private int mOldDepth;
/**
* Constructor.
*
* @param newDepth depth of transaction cursor in new revision
* @param oldDepth depth of transaction cursor in old revision
*/
DepthCounter(final int newDepth, final int oldDepth) {
mNewDepth = newDepth;
mOldDepth = oldDepth;
}
/** Increment depth in new revision. */
void incrementNewDepth() {
mNewDepth++;
}
/** Decrement depth in new revision. */
void decrementNewDepth() {
mNewDepth--;
}
/** Increment depth in old revision. */
void incrementOldDepth() {
mOldDepth++;
}
/** Decrement depth in old revision. */
void decrementOldDepth() {
mOldDepth--;
}
/**
* Get depth in new revision.
*
* @return depth in new revision
*/
int getNewDepth() {
return mNewDepth;
}
/**
* Get depth in old revision.
*
* @return depth in old revision
*/
int getOldDepth() {
return mOldDepth;
}
@Override
public String toString() {
return MoreObjects.toStringHelper(this)
.add("newDepth: ", mNewDepth)
.add("oldDepth: ", mOldDepth)
.toString();
}
}