Bug 200979 BIRT Cross tab - Better error messages
In general the error messages are very generic - either "Cube does not exist" followed by stack trace or - stack trace. From the error message it is difficult to fix the problem in the report design. I have attached a couple of report design, in which case the error messages are so difficult to follow. We need to show user friendly error messages. ( This bug applies to data engine errors and engine errors ).
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/olap/data/impl/facttable/FactTableAccessor.java
}
	
	/**
	 * 
	 * @param key
	 * @return
	 * @throws IOException
	 */
	private int traverseFind( DimensionKey key ) throws IOException
	{
		for ( int i = position; i < diskMemberArray.size( ); i++ )
		{
			if ( ( (DimensionKey) diskMemberArray.get( i ) ).compareTo( key ) == 0 )
			{
				position = i;
				return ((DimensionKey) diskMemberArray.get( i )).getDimensionPos();
			}
		}
		for ( int i = diskPostion; i < position; i++ )
		{
			if ( ( (DimensionKey) diskMemberArray.get( i ) ).compareTo( key ) == 0 )
			{
				position = i;
				return ((DimensionKey) diskMemberArray.get( i )).getDimensionPos();
			}
		}
		return -1;
	}
}
class DimensionInfo