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// Copyright (C) 2017 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.permissions;
import static com.google.gerrit.server.permissions.LabelPermission.ForUser.ON_BEHALF_OF;
import static com.google.gerrit.server.permissions.LabelPermission.ForUser.SELF;
import static java.util.Objects.requireNonNull;
import com.google.gerrit.common.data.LabelType;
import com.google.gerrit.common.data.LabelValue;
import com.google.gerrit.server.util.LabelVote;
/** Permission representing a label. */
public class LabelPermission implements ChangePermissionOrLabel {
public enum ForUser {
SELF,
ON_BEHALF_OF;
}
private final ForUser forUser;
private final String name;
/**
* Construct a reference to a label permission.
*
* @param type type description of the label.
*/
public LabelPermission(LabelType type) {
this(SELF, type);
}
/**
* Construct a reference to a label permission.
*
* @param forUser {@code SELF} (default) or {@code ON_BEHALF_OF} for labelAs behavior.
* @param type type description of the label.
*/
public LabelPermission(ForUser forUser, LabelType type) {
this(forUser, type.getName());
}
/**
* Construct a reference to a label permission.
*
* @param name name of the label, e.g. {@code "Code-Review"} or {@code "Verified"}.
*/
public LabelPermission(String name) {
this(SELF, name);
}
/**
* Construct a reference to a label permission.
*
* @param forUser {@code SELF} (default) or {@code ON_BEHALF_OF} for labelAs behavior.
* @param name name of the label, e.g. {@code "Code-Review"} or {@code "Verified"}.
*/
public LabelPermission(ForUser forUser, String name) {
this.forUser = requireNonNull(forUser, "ForUser");
this.name = LabelType.checkName(name);
}
/** @return {@code SELF} or {@code ON_BEHALF_OF} (or labelAs). */
public ForUser forUser() {
return forUser;
}
/** @return name of the label, e.g. {@code "Code-Review"}. */
public String label() {
return name;
}
@Override
public String describeForException() {
if (forUser == ON_BEHALF_OF) {
return "label on behalf of " + name;
}
return "label " + name;
}
@Override
public int hashCode() {
return name.hashCode();
}
@Override
public boolean equals(Object other) {
if (other instanceof LabelPermission) {
LabelPermission b = (LabelPermission) other;
return forUser == b.forUser && name.equals(b.name);
}
return false;
}
@Override
public String toString() {
if (forUser == ON_BEHALF_OF) {
return "LabelAs[" + name + ']';
}
return "Label[" + name + ']';
}
/** A {@link LabelPermission} at a specific value. */
public static class WithValue implements ChangePermissionOrLabel {
private final ForUser forUser;
private final LabelVote label;
/**
* Construct a reference to a label at a specific value.
*
* @param type description of the label.
* @param value numeric score assigned to the label.
*/
public WithValue(LabelType type, LabelValue value) {
this(SELF, type, value);
}
/**
* Construct a reference to a label at a specific value.
*
* @param type description of the label.
* @param value numeric score assigned to the label.
*/
public WithValue(LabelType type, short value) {
this(SELF, type.getName(), value);
}
/**
* Construct a reference to a label at a specific value.
*
* @param forUser {@code SELF} (default) or {@code ON_BEHALF_OF} for labelAs behavior.
* @param type description of the label.
* @param value numeric score assigned to the label.
*/
public WithValue(ForUser forUser, LabelType type, LabelValue value) {
this(forUser, type.getName(), value.getValue());
}
/**
* Construct a reference to a label at a specific value.
*
* @param forUser {@code SELF} (default) or {@code ON_BEHALF_OF} for labelAs behavior.
* @param type description of the label.
* @param value numeric score assigned to the label.
*/
public WithValue(ForUser forUser, LabelType type, short value) {
this(forUser, type.getName(), value);
}
/**
* Construct a reference to a label at a specific value.
*
* @param name name of the label, e.g. {@code "Code-Review"} or {@code "Verified"}.
* @param value numeric score assigned to the label.
*/
public WithValue(String name, short value) {
this(SELF, name, value);
}
/**
* Construct a reference to a label at a specific value.
*
* @param forUser {@code SELF} (default) or {@code ON_BEHALF_OF} for labelAs behavior.
* @param name name of the label, e.g. {@code "Code-Review"} or {@code "Verified"}.
* @param value numeric score assigned to the label.
*/
public WithValue(ForUser forUser, String name, short value) {
this(forUser, LabelVote.create(name, value));
}
/**
* Construct a reference to a label at a specific value.
*
* @param label label name and vote.
*/
public WithValue(LabelVote label) {
this(SELF, label);
}
/**
* Construct a reference to a label at a specific value.
*
* @param forUser {@code SELF} (default) or {@code ON_BEHALF_OF} for labelAs behavior.
* @param label label name and vote.
*/
public WithValue(ForUser forUser, LabelVote label) {
this.forUser = requireNonNull(forUser, "ForUser");
this.label = requireNonNull(label, "LabelVote");
}
/** @return {@code SELF} or {@code ON_BEHALF_OF} (or labelAs). */
public ForUser forUser() {
return forUser;
}
/** @return name of the label, e.g. {@code "Code-Review"}. */
public String label() {
return label.label();
}
/** @return specific value of the label, e.g. 1 or 2. */
public short value() {
return label.value();
}
@Override
public String describeForException() {
if (forUser == ON_BEHALF_OF) {
return "label on behalf of " + label.formatWithEquals();
}
return "label " + label.formatWithEquals();
}
@Override
public int hashCode() {
return label.hashCode();
}
@Override
public boolean equals(Object other) {
if (other instanceof WithValue) {
WithValue b = (WithValue) other;
return forUser == b.forUser && label.equals(b.label);
}
return false;
}
@Override
public String toString() {
if (forUser == ON_BEHALF_OF) {
return "LabelAs[" + label.format() + ']';
}
return "Label[" + label.format() + ']';
}
}
}
