Bug 151535 Parameters are invisable in Joint Dataset
Trying to use "Joint Dataset" combined with parameters within underlaying Data-Sets (neccessary to achive a filtering where clause for a DateTime Field) Parameter editing ( e.g. in Chart designer) do not show the entire parameter. As specified it should show and let to edit a combination of both underlaying datasets' parameters.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/PreparedJointDataSourceQuery.java
}
	/**
	 * Gets the Java class used to represent the specified data type.
	 * 
	 * @param typeCode
	 * @return
	 */
	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
			{