Bug 212505 Use default script ID to skip script debugging
In Dte side, when compile or evaluate java script, it would pass in a script source id. This kind of id is currenlty used by report script debugger. So to skip redundant processing for such kind of internal script evaluating, dte need pass in a default ID, which is defined as ScriptExpression.defaultID. If this id is already used for particular meaning and it can not pass in the default ID, we need define them as public constants and let script debugger check and skip them as well.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/adapter/ModelDteApiAdapter.java
.equals( DesignChoiceConstants.SEARCH_TYPE_ANY ) )
				searchHint = IColumnDefinition.ALWAYS_SEARCHABLE;
			else
				assert searchConstant
						.equals( DesignChoiceConstants.SEARCH_TYPE_NONE );
			dteColumn.setSearchHint( searchHint );
		}
	}
	private IColumnDefinition newColumnDefn( ColumnHintHandle modelColumnHint )
	{
		ColumnDefinition newColumn = new ColumnDefinition( modelColumnHint
				.getColumnName( ) );
		updateColumnDefn( newColumn, modelColumnHint );
		return newColumn;
	}
	/**
	 * Find the DtE columnDefn from the given list of columnDefns that matches
	 * the given columnName.
	 */
	private ColumnDefinition findColumnDefn( List columnDefns, String columnName )
	{
		assert columnName != null;
		if ( columnDefns == null )
			return null; 
		Iterator iter = columnDefns.iterator( );
		if ( iter == null )
			return null;
		
		
		while ( iter.hasNext( ) )