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// Copyright (C) 2008 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.reviewdb.client;
import com.google.gwtorm.client.Column;
/** A revision identifier for a file or a change. */
public final class RevId {
public static final int LEN = 40;
@Column(id = 1, length = LEN)
protected String id;
protected RevId() {}
public RevId(String str) {
id = str;
}
/** @return the value of this revision id. */
public String get() {
return id;
}
/** @return true if this revision id has all required digits. */
public boolean isComplete() {
return get().length() == LEN;
}
/**
* @return if {@link #isComplete()}, {@code this}; otherwise a new RevId with 'z' appended on the
* end.
*/
public RevId max() {
if (isComplete()) {
return this;
}
final StringBuilder revEnd = new StringBuilder(get().length() + 1);
revEnd.append(get());
revEnd.append('z');
return new RevId(revEnd.toString());
}
@Override
public int hashCode() {
return id.hashCode();
}
@Override
public boolean equals(Object o) {
return (o instanceof RevId) && id.equals(((RevId) o).id);
}
@Override
public String toString() {
return getClass().getSimpleName() + "{" + id + "}";
}
public boolean matches(String str) {
return id.startsWith(str.toLowerCase());
}
}