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.

Method Summary

static ParseContext

generateOperatorTree(HiveConf conf, String command) Parse the input String command and generate a ASTNode tree.

Methods inherited from class java.lang.Object

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

Method Detail

generateOperatorTree

public static ParseContext generateOperatorTree(HiveConf conf,
                                                String command)
                                         throws SemanticException

Parse the input String command and generate a ASTNode tree.

Parameters:

conf -

command -

Returns:

the parse context

Throws:

SemanticException