109 lines
2.9 KiB
Java
109 lines
2.9 KiB
Java
// Copyright (C) 2009 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package com.google.gerrit.common.data;
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import com.google.gerrit.reviewdb.client.LabelId;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Comparator;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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public class LabelTypes {
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protected List<LabelType> labelTypes;
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private transient volatile Map<String, LabelType> byLabel;
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private transient volatile Map<String, Integer> positions;
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protected LabelTypes() {}
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public LabelTypes(List<? extends LabelType> approvals) {
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labelTypes = Collections.unmodifiableList(new ArrayList<>(approvals));
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}
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public List<LabelType> getLabelTypes() {
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return labelTypes;
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}
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public LabelType byLabel(LabelId labelId) {
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return byLabel().get(labelId.get().toLowerCase());
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}
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public LabelType byLabel(String labelName) {
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return byLabel().get(labelName.toLowerCase());
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}
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private Map<String, LabelType> byLabel() {
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if (byLabel == null) {
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synchronized (this) {
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if (byLabel == null) {
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Map<String, LabelType> l = new HashMap<>();
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if (labelTypes != null) {
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for (LabelType t : labelTypes) {
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l.put(t.getName().toLowerCase(), t);
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}
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}
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byLabel = l;
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}
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}
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}
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return byLabel;
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}
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@Override
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public String toString() {
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return labelTypes.toString();
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}
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public Comparator<String> nameComparator() {
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final Map<String, Integer> positions = positions();
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return new Comparator<String>() {
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@Override
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public int compare(String left, String right) {
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int lp = position(left);
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int rp = position(right);
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int cmp = lp - rp;
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if (cmp == 0) {
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cmp = left.compareTo(right);
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}
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return cmp;
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}
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private int position(String name) {
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Integer p = positions.get(name);
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return p != null ? p : positions.size();
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}
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};
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}
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private Map<String, Integer> positions() {
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if (positions == null) {
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synchronized (this) {
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if (positions == null) {
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Map<String, Integer> p = new HashMap<>();
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if (labelTypes != null) {
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int i = 0;
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for (LabelType t : labelTypes) {
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p.put(t.getName(), i++);
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}
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}
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positions = p;
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}
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}
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}
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return positions;
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}
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}
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