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// Copyright (C) 2015 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.submit;

import com.google.common.collect.ImmutableCollection;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.ListMultimap;
import com.google.common.collect.MultimapBuilder;
import com.google.gerrit.entities.BranchNameKey;
import com.google.gerrit.entities.Change;
import com.google.gerrit.entities.Project;
import com.google.gerrit.server.query.change.ChangeData;
import java.util.Collection;
import java.util.LinkedHashMap;
import java.util.Map;

/**
 * A set of changes grouped together to be submitted atomically.
 *
 * 

MergeSuperSet constructs ChangeSets to accumulate intermediate results toward the ChangeSet it * returns when done. * *

This class is not thread safe. */ public class ChangeSet { private final ImmutableMap changeData; /** * Additional changes not included in changeData because their connection to the original change * is not visible to the current user. That is, this map includes both - changes that are not * visible to the current user, and - changes whose only relationship to the set is via a change * that is not visible to the current user */ private final ImmutableMap nonVisibleChanges; private static ImmutableMap index( Iterable changes, Collection exclude) { Map ret = new LinkedHashMap<>(); for (ChangeData cd : changes) { Change.Id id = cd.getId(); if (!ret.containsKey(id) && !exclude.contains(id)) { ret.put(id, cd); } } return ImmutableMap.copyOf(ret); } public ChangeSet(Iterable changes, Iterable hiddenChanges) { changeData = index(changes, ImmutableList.of()); nonVisibleChanges = index(hiddenChanges, changeData.keySet()); } public ChangeSet(ChangeData change, boolean visible) { this(visible ? ImmutableList.of(change) : ImmutableList.of(), ImmutableList.of(change)); } public ImmutableSet ids() { return changeData.keySet(); } public ImmutableMap changesById() { return changeData; } public ListMultimap changesByBranch() { ListMultimap ret = MultimapBuilder.hashKeys().arrayListValues().build(); for (ChangeData cd : changeData.values()) { ret.put(cd.change().getDest(), cd); } return ret; } public ImmutableCollection changes() { return changeData.values(); } public ImmutableSet projects() { ImmutableSet.Builder ret = ImmutableSet.builder(); for (ChangeData cd : changeData.values()) { ret.add(cd.project()); } return ret.build(); } public ImmutableSet nonVisibleIds() { return nonVisibleChanges.keySet(); } public ImmutableList nonVisibleChanges() { return nonVisibleChanges.values().asList(); } public boolean furtherHiddenChanges() { return !nonVisibleChanges.isEmpty(); } public int size() { return changeData.size() + nonVisibleChanges.size(); } @Override public String toString() { return getClass().getSimpleName() + ids() + nonVisibleIds(); } }





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