Bug 191627 [Regression]Exception occurs when first preview the joint dataset[0706]
Description: [Regression]Exception occurs when preview the flatfile and sampledb joint dataset[0706] Build number: 2.2.0.v20070608-0630 Steps to reproduce: 1, New a flatfile dataset 2, New a CUSTOMER dataset 3, Join two datasets with STATE column 4, Preview in dataset Expected result: Preview successfully Actual result: Exception occurs Error log: A BIRT exception occurred. Plug-in Provider:Eclipse.org Plug-in Name:BIRT Data Engine Plug-in ID:org.eclipse.birt.data Version:2.2.0.v20070607-1421 Error Code:data.engine.ColumnBindingReferToInexistColumn Error Message:Column binding "Employee::CUSTOMERNUMBER" has referred to a data set column "Employee::CUSTOMERNUMBER" which is not exist.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/PreparedJointDataSourceQuery.java
private Class getTypeClass( int typeCode )
	{
		return DataType.getClass( typeCode );
	}
	/**
	 * Gets the size of the temp customer columns
	 * 
	 * @param metaData
	 * @return
	 * @throws BirtException
	 */
	private int getTempColumnSize( IResultMetaData metaData )
			throws BirtException
	{
		int size = 0;
		for ( int i = 1; i <= metaData.getColumnCount( ); i++ )
		{
			if ( isTempColumn( metaData.getColumnName( i ) ) )
			{
				size++;
			}
			else
			{
				assert ( size == 0 );
			}
		}
		return size;
	}
	/**
	 * Check whether a column is a temp column according to column name.