com.google.gerrit.server.query.change.AndChangeSource Maven / Gradle / Ivy
// Copyright (C) 2010 The Android Open Source Project
//
// 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.google.gerrit.server.query.change;
import com.google.gerrit.index.query.AndSource;
import com.google.gerrit.index.query.IsVisibleToPredicate;
import com.google.gerrit.index.query.Predicate;
import com.google.gwtorm.server.OrmException;
import com.google.gwtorm.server.OrmRuntimeException;
import java.util.Collection;
import java.util.List;
public class AndChangeSource extends AndSource implements ChangeDataSource {
public AndChangeSource(Collection> that) {
super(that);
}
public AndChangeSource(
Predicate that,
IsVisibleToPredicate isVisibleToPredicate,
int start) {
super(that, isVisibleToPredicate, start);
}
@Override
public boolean hasChange() {
return source != null
&& source instanceof ChangeDataSource
&& ((ChangeDataSource) source).hasChange();
}
@Override
protected List transformBuffer(List buffer) throws OrmRuntimeException {
if (!hasChange()) {
try {
ChangeData.ensureChangeLoaded(buffer);
} catch (OrmException e) {
throw new OrmRuntimeException(e);
}
}
return super.transformBuffer(buffer);
}
@Override
public int compare(Predicate a, Predicate b) {
int cmp = super.compare(a, b);
if (cmp == 0 && a instanceof ChangeDataSource && b instanceof ChangeDataSource) {
ChangeDataSource as = (ChangeDataSource) a;
ChangeDataSource bs = (ChangeDataSource) b;
cmp = (as.hasChange() ? 0 : 1) - (bs.hasChange() ? 0 : 1);
}
return cmp;
}
}