Bug 190440 Dimensions from same column will affact each other.[1101]
Description: Dimensions from same column will affact each other. Build number:2.2.0.v200706011658 Steps to reproduce: 1. Open attached report. The cube in the report contains "static amount" and "interval amount". 2. Preview the report. 3. Delete interval amount group and preview again. Expected result: Step2 and step 3 display same effect. Actual result: In step2 preview, xtab display effect of "interval amount" level value instead of "static amount" level value. Error log:N/A
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/olap/data/impl/aggregation/AggregationExecutor.java
* @return
	 */
	private int find( String[] strArray, String str )
	{
		if ( strArray == null )
		{
			return -1;
		}
		for ( int i = 0; i < strArray.length; i++ )
		{
			if ( strArray[i].equals( str ) )
			{
				return i;
			}
		}
		return -1;
	}
	
	/**
	 * 
	 * @param colList
	 * @param col
	 * @return
	 */
	private boolean exist( List colList, DimColumn col )
	{
		for ( int i = 0; i < colList.size( ); i++ )
		{
			if ( col.equals( colList.get( i ) ) )
			{