org.apache.hadoop.hive.ql.parse.authorization.AuthorizationParseUtils 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.parse.authorization;
import java.util.ArrayList;
import java.util.List;
import org.apache.hadoop.hive.metastore.api.PrincipalType;
import org.apache.hadoop.hive.ql.parse.ASTNode;
import org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer;
import org.apache.hadoop.hive.ql.parse.HiveParser;
import org.apache.hadoop.hive.ql.plan.PrincipalDesc;
/**
* Utility functions for creating objects relevant for authorization operations
* from AST
*/
public class AuthorizationParseUtils {
public static PrincipalDesc getPrincipalDesc(ASTNode principal) {
PrincipalType type = getPrincipalType(principal);
if (type != null) {
String text = principal.getChild(0).getText();
String principalName = BaseSemanticAnalyzer.unescapeIdentifier(text);
return new PrincipalDesc(principalName, type);
}
return null;
}
private static PrincipalType getPrincipalType(ASTNode principal) {
switch (principal.getType()) {
case HiveParser.TOK_USER:
return PrincipalType.USER;
case HiveParser.TOK_GROUP:
return PrincipalType.GROUP;
case HiveParser.TOK_ROLE:
return PrincipalType.ROLE;
default:
return null;
}
}
public static List analyzePrincipalListDef(ASTNode node) {
List principalList = new ArrayList();
for (int i = 0; i < node.getChildCount(); i++) {
principalList.add(getPrincipalDesc((ASTNode) node.getChild(i)));
}
return principalList;
}
}