Bug 124610 Add a filter on a boolean computed column will cause error.
Description: Add a filter on a boolean computed column will cause error. Steps to reproduce: 1. New a BIRT sample data source and a dataset from table "orders" 2. Create a computed column with name="yes/no", type = any(no boolean for choose), value= if(row[1]%2==0){ true; }else{ false; } 3. Drag the dataset from Data Explorer to Layout 4. Select the table, click Filters tab in Property Editor. 5. Click Add button. 6. Select yes/no as Expression, Is True as Operator. 7. Save and preview. Expected result: Filter works. Actual result: Error0 : data.engine.ConvertToDataTypeError ( 1 time(s) ) detail : org.eclipse.birt.data.engine.core.DataException: can not be converted to class java.lang.Boolean.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/script/ScriptEvalUtil.java
{
				return DataTypeUtil.toDate( obj1 ).compareTo(
						DataTypeUtil.toDate( obj2 ) );
			}
			else
				throw new DataException( ResourceConstants.INVALID_TYPE_IN_EXPR );
		}
		catch ( BirtException e )
		{
			throw new DataException( ResourceConstants.DATATYPEUTIL_ERROR, e );
		}
	}
	
	/**
	 * @param resultObject
	 * @param resultOp1
	 * @param resultOp2
	 * @return true if resultObject is between resultOp1 and resultOp2, false otherwise
	 * @throws DataException
	 */
	private static boolean between( Object resultObject, Object resultOp1,
			Object resultOp2 ) throws DataException
	{
		Object min, max;
		if ( compare( resultOp1, resultOp2 ) <= 0 )
		{
			min = resultOp1;
			max = resultOp2;
		}
		else