// Copyright (C) 2009 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.reviewdb.client.Change;
import com.google.gerrit.reviewdb.server.ReviewDb;
import com.google.gerrit.server.query.OperatorPredicate;
import com.google.gerrit.server.query.Predicate;
import com.google.gwtorm.server.OrmException;
import com.google.inject.Provider;
import java.util.ArrayList;
import java.util.EnumMap;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* Predicate for a {@link Change.Status}.
* <p>
* The actual name of this operator can differ, it usually comes as {@code
* status:} but may also be {@code is:} to help do-what-i-meanery for end-users
* searching for changes. Either operator name has the same meaning.
*/
final class ChangeStatusPredicate extends OperatorPredicate<ChangeData> {
private static final Map<String, Change.Status> byName;
private static final EnumMap<Change.Status, String> byEnum;
static {
byName = new HashMap<String, Change.Status>();
byEnum = new EnumMap<Change.Status, String>(Change.Status.class);
for (final Change.Status s : Change.Status.values()) {
final String name = s.name().toLowerCase();
byName.put(name, s);
byEnum.put(s, name);
}
}
static Predicate<ChangeData> open(Provider<ReviewDb> dbProvider) {
List<Predicate<ChangeData>> r = new ArrayList<Predicate<ChangeData>>(4);
for (final Change.Status e : Change.Status.values()) {
if (e.isOpen()) {
r.add(new ChangeStatusPredicate(dbProvider, e));
}
}
return r.size() == 1 ? r.get(0) : or(r);
}
static Predicate<ChangeData> closed(Provider<ReviewDb> dbProvider) {
List<Predicate<ChangeData>> r = new ArrayList<Predicate<ChangeData>>(4);
for (final Change.Status e : Change.Status.values()) {
if (e.isClosed()) {
r.add(new ChangeStatusPredicate(dbProvider, e));
}
}
return r.size() == 1 ? r.get(0) : or(r);
}
private static Change.Status parse(final String value) {
final Change.Status s = byName.get(value);
if (s == null) {
throw new IllegalArgumentException();
}
return s;
}
private final Provider<ReviewDb> dbProvider;
private final Change.Status status;
ChangeStatusPredicate(Provider<ReviewDb> dbProvider, String value) {
this(dbProvider, parse(value));
}
ChangeStatusPredicate(Provider<ReviewDb> dbProvider, Change.Status status) {
super(ChangeQueryBuilder.FIELD_STATUS, byEnum.get(status));
this.dbProvider = dbProvider;
this.status = status;
}
Change.Status getStatus() {
return status;
}
@Override
public boolean match(final ChangeData object) throws OrmException {
Change change = object.change(dbProvider);
return change != null && status.equals(change.getStatus());
}
@Override
public int getCost() {
return 0;
}
@Override
public int hashCode() {
return status.hashCode();
}
@Override
public boolean equals(Object other) {
if (other instanceof ChangeStatusPredicate) {
final ChangeStatusPredicate p = (ChangeStatusPredicate) other;
return status.equals(p.status);
}
return false;
}
@Override
public String toString() {
return getOperator() + ":" + getValue();
}
}