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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;
import static org.apache.hadoop.hive.ql.parse.HiveParser.TOK_IFEXISTS;
FunctionSemanticAnalyzer.
  private static final Log LOG = LogFactory
      .getLog("hive.ql.parse.FunctionSemanticAnalyzer");
    super(conf);
  }
  public void analyzeInternal(ASTNode astthrows SemanticException {
    if (ast.getToken().getType() == .) {
      analyzeCreateFunction(ast);
    }
    if (ast.getToken().getType() == .) {
      analyzeDropFunction(ast);
    }
    .info("analyze done");
  }
  private void analyzeCreateFunction(ASTNode astthrows SemanticException {
    String functionName = ast.getChild(0).getText();
    String className = unescapeSQLString(ast.getChild(1).getText());
    CreateFunctionDesc desc = new CreateFunctionDesc(functionNameclassName);
    .add(TaskFactory.get(new FunctionWork(desc), ));
  }
  private void analyzeDropFunction(ASTNode astthrows SemanticException {
    String functionName = ast.getChild(0).getText();
    boolean ifExists = (ast.getFirstChildWithType() != null);
    // we want to signal an error if the function doesn't exist and we're
    // configured not to ignore this
    boolean throwException =
      !ifExists && !HiveConf.getBoolVar(.);
    if (throwException && FunctionRegistry.getFunctionInfo(functionName) == null) {
      throw new SemanticException(..getMsg(functionName));
    }
    DropFunctionDesc desc = new DropFunctionDesc(functionName);
    .add(TaskFactory.get(new FunctionWork(desc), ));
  }
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