org.apache.hadoop.hive.ql.security.authorization.plugin.HivePrivilege Maven / Gradle / Ivy
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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.hadoop.hive.ql.security.authorization.plugin;
import java.util.List;
import java.util.Locale;
import org.apache.hadoop.hive.common.classification.InterfaceAudience.LimitedPrivate;
import org.apache.hadoop.hive.common.classification.InterfaceStability.Evolving;
import org.apache.hadoop.hive.ql.security.authorization.PrivilegeScope;
/**
* Represents the hive privilege being granted/revoked
*/
@LimitedPrivate(value = { "Apache Argus (incubating)" })
@Evolving
public class HivePrivilege implements Comparable {
@Override
public String toString() {
return "Privilege [name=" + name + ", columns=" + columns + "]";
}
private final String name;
private final List columns;
private final List supportedScope;
public HivePrivilege(String name, List columns) {
this(name, columns, null);
}
public HivePrivilege(String name, List columns, List supportedScope) {
this.name = name.toUpperCase(Locale.US);
this.columns = columns;
this.supportedScope = supportedScope;
}
public String getName() {
return name;
}
public List getColumns() {
return columns;
}
public List getSupportedScope() {
return supportedScope;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((columns == null) ? 0 : columns.hashCode());
result = prime * result + ((name == null) ? 0 : name.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
HivePrivilege other = (HivePrivilege) obj;
if (columns == null) {
if (other.columns != null)
return false;
} else if (!columns.equals(other.columns))
return false;
if (name == null) {
if (other.name != null)
return false;
} else if (!name.equals(other.name))
return false;
return true;
}
public boolean supportsScope(PrivilegeScope scope) {
return supportedScope != null && supportedScope.contains(scope.name());
}
@Override
public int compareTo(HivePrivilege privilege) {
int compare = columns != null ?
(privilege.columns != null ? compare(columns, privilege.columns) : 1) :
(privilege.columns != null ? -1 : 0);
if (compare == 0) {
compare = name.compareTo(privilege.name);
}
return compare;
}
private int compare(List o1, List o2) {
for (int i = 0; i < Math.min(o1.size(), o2.size()); i++) {
int compare = o1.get(i).compareTo(o2.get(i));
if (compare != 0) {
return compare;
}
}
return o1.size() > o2.size() ? 1 : (o1.size() < o2.size() ? -1 : 0);
}
}