794629eee6
git-svn-id: http://google-refine.googlecode.com/svn/trunk@2427 7d457c2a-affb-35e4-300a-418c747d4874
100 lines
3.3 KiB
Java
100 lines
3.3 KiB
Java
/*
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Copyright 2010, Google Inc.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the following disclaimer
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in the documentation and/or other materials provided with the
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distribution.
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* Neither the name of Google Inc. nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package com.google.refine.history;
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import java.io.IOException;
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import java.io.LineNumberReader;
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import java.io.Writer;
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import java.util.Properties;
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import com.google.refine.model.Project;
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import com.google.refine.util.Pool;
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public class ChangeSequence implements Change {
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final protected Change[] _changes;
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public ChangeSequence(Change[] changes) {
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_changes = changes;
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}
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@Override
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public void apply(Project project) {
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synchronized (project) {
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for (Change change : _changes) {
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change.apply(project);
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}
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}
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}
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@Override
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public void revert(Project project) {
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synchronized (project) {
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for (int i = _changes.length - 1; i >= 0 ; i--) {
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_changes[i].revert(project);
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}
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}
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}
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@Override
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public void save(Writer writer, Properties options) throws IOException {
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writer.write("count="); writer.write(Integer.toString(_changes.length)); writer.write('\n');
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for (Change change : _changes) {
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History.writeOneChange(writer, change, options);
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}
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writer.write("/ec/\n"); // end of change marker
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}
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static public Change load(LineNumberReader reader, Pool pool) throws Exception {
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String line = reader.readLine();
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if (line == null) {
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line = "";
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}
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int equal = line.indexOf('=');
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assert "count".equals(line.substring(0, equal));
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int count = Integer.parseInt(line.substring(equal + 1));
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Change[] changes = new Change[count];
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for (int i = 0; i < count; i++) {
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changes[i] = History.readOneChange(reader, pool);
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}
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line = reader.readLine();
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assert "/ec/".equals(line);
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return new ChangeSequence(changes);
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}
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}
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