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// Copyright (C) 2016 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.extensions.api.changes;
import com.google.gerrit.extensions.annotations.ExtensionPoint;
import com.google.gerrit.extensions.common.ActionInfo;
import com.google.gerrit.extensions.common.ChangeInfo;
import com.google.gerrit.extensions.common.RevisionInfo;
/**
* Extension point called during population of {@link ActionInfo} maps.
*
* <p>Each visitor may mutate the input {@link ActionInfo}, or filter it out of the map entirely.
* When multiple extensions are registered, the order in which they are executed is undefined.
*/
@ExtensionPoint
public interface ActionVisitor {
/**
* Visit a change-level action.
*
* <p>Callers may mutate the input {@link ActionInfo}, or return false to omit the action from the
* map entirely. Inputs other than the {@link ActionInfo} should be considered immutable.
*
* @param name name of the action, as a key into the {@link ActionInfo} map returned by the REST
* API.
* @param actionInfo action being visited; caller may mutate.
* @param changeInfo information about the change to which this action belongs; caller should
* treat as immutable.
* @return true if the action should remain in the map, or false to omit it.
*/
boolean visit(String name, ActionInfo actionInfo, ChangeInfo changeInfo);
/**
* Visit a revision-level action.
*
* <p>Callers may mutate the input {@link ActionInfo}, or return false to omit the action from the
* map entirely. Inputs other than the {@link ActionInfo} should be considered immutable.
*
* @param name name of the action, as a key into the {@link ActionInfo} map returned by the REST
* API.
* @param actionInfo action being visited; caller may mutate.
* @param changeInfo information about the change to which this action belongs; caller should
* treat as immutable.
* @param revisionInfo information about the revision to which this action belongs; caller should
* treat as immutable.
* @return true if the action should remain in the map, or false to omit it.
*/
boolean visit(
String name, ActionInfo actionInfo, ChangeInfo changeInfo, RevisionInfo revisionInfo);
}
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