org.apache.lens.cube.parse

Class DenormalizationResolver

java.lang.Object

org.apache.lens.cube.parse.DenormalizationResolver

public class DenormalizationResolver
extends Object

This class resolves all the reference columns that are queried.

Keeps track of the context that if any candidate needs to use columns through tables referenced and replaces the columns from referenced tables in all the ASTs

Constructor Summary

Constructors

Constructor and Description
DenormalizationResolver()

Method Summary

Modifier and Type	Method and Description
void	rewriteContext(CubeQueryContext cubeql) Find all de-normalized columns, if these columns are not directly available in candidate tables, query will be replaced with the corresponding table reference

Methods inherited from class java.lang.Object

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

Constructor Detail

DenormalizationResolver

public DenormalizationResolver()

Method Detail

rewriteContext

public void rewriteContext(CubeQueryContext cubeql)
                    throws LensException

Find all de-normalized columns, if these columns are not directly available in candidate tables, query will be replaced with the corresponding table reference

Parameters:

cubeql - CubeQueryContext

Throws:

LensException