org.apache.hadoop.hive.ql.optimizer.index

Class RewriteParseContextGenerator

java.lang.Object

org.apache.hadoop.hive.ql.optimizer.index.RewriteParseContextGenerator

public final class RewriteParseContextGenerator
extends Object

RewriteParseContextGenerator is a class that offers methods to generate operator tree for input queries. It is implemented on lines of the analyzeInternal(..) method of SemanticAnalyzer but it creates only the ParseContext for the input query command. It does not optimize or generate map-reduce tasks for the input query. This can be used when you need to create operator tree for an internal query.

Constructor Summary

Constructors

Constructor and Description
RewriteParseContextGenerator()

Method Summary

Methods

Modifier and Type	Method and Description
static Operator<? extends OperatorDesc>	generateOperatorTree(HiveConf conf, String command) Parse the input String command and generate an operator tree.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RewriteParseContextGenerator

public RewriteParseContextGenerator()

Method Detail

generateOperatorTree

public static Operator<? extends OperatorDesc> generateOperatorTree(HiveConf conf,
                                                    String command)
                                                             throws SemanticException

Parse the input String command and generate an operator tree.

Parameters:

conf -

command -

Throws:

SemanticException