Bug 192562 NPE throws out in preview when left one requied column member value empty in sorting of crosstab[1102]
Description: NPE throws out in preview when left one requied column member value empty in sorting of crosstab[1102] Build number: 2.2.0.v20070614-0630 Steps to reproduce: 1, New a crosstab 2, Specify the sorting on measure 3, Left one group-level-member empty 4, Preview Expected result: No NPE and give out a warning that the group-level-member should not be null like the behavior of filter Actual result: NPE throws out, and the warning message is incorrect
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/olap/data/impl/aggregation/sort/AggrSortDefinition.java
logger.exiting( AggrSortDefinition.class.getName( ),
				"AggrSortDefinition" );
	}
	
	/**
	 * 
	 * @return
	 */
	public DimLevel[] getAggrLevels( )
	{
		return this.aggrLevels;
	}
	
	/**
	 * 
	 * @return
	 */
	public String getAggrName( )
	{
		return this.aggrName;
	}
	
	/**
	 * 
	 * @return
	 */
	public DimLevel[] getAxisQualifierLevel()
	{
		return this.axisQualifierLevel;
	}