gr.uoa.di.madgik.hive

Class HiveQLParser

java.lang.Object

gr.uoa.di.madgik.hive.HiveQLParser

public class HiveQLParser
extends Object

A parser of Hive Query Language.

Author:

john.gerbesiotis - DI NKUA

Constructor Summary

Constructors

Constructor and Description
HiveQLParser()

Method Summary

Modifier and Type	Method and Description
int	compile()
PlanNode	constructPlan()
int	execute()
org.antlr.runtime.tree.CommonTree	getASTree() Get the Abstract Syntax Tree
QueryType	getQueryType() Get last parsed query type
void	parse(String command) Parses the HiveQL query command

Methods inherited from class java.lang.Object

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

Constructor Detail

HiveQLParser

public HiveQLParser()

Method Detail

parse

public void parse(String command)
           throws Exception

Parses the HiveQL query command

Parameters:

command - The query to be parsed

Throws:

Exception - If query parsing failed

getQueryType

public QueryType getQueryType()

Get last parsed query type

Returns:

The QueryType

compile

public int compile()

execute

public int execute()

constructPlan

public PlanNode constructPlan()
                       throws Exception

Throws:

Exception

getASTree

public org.antlr.runtime.tree.CommonTree getASTree()

Get the Abstract Syntax Tree

Returns:

The parsed query's AST