Bug 213959 [Regression]Blob computed column doesn't work
Description: [Regression]Blob type computed column doesn't work Build number: 2.3.0.v20071228-1005 Steps to reproduce: 1, New a sampleDB from table PRODUCTLINE 2, New a computed column A; type is Blob; expression is row["IMAGE"] 3, Preview in dataset Expected result: The dataset can be preview ok Actual result: Error happened 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:2.3.0.v20071228-1005 Error Code:data.engine.CompCol.FailRetrieveValueComputedColumn Error Message:Fail to compute value for computed column "AAA". Can not convert the value of [B@1a9efcd to Blob type.
core/org.eclipse.birt.core/src/org/eclipse/birt/core/data/DataTypeUtil.java
*/
	public static Date toDate( String source, ULocale locale )
			throws BirtException
	{
		if ( source == null )
			return null;
		DateFormat dateFormat = null;
		Date resultDate = null;
		
		boolean existTime = source.matches( ".*[0-9]+:[0-9]+:[0-9]+.*" )
				|| source.matches( ".*[0-9]+:[0-9]+.*" );
		for ( int i = DEFAULT_DATE_STYLE; i <= DateFormat.SHORT; i++ )
		{
			for ( int j = DEFAULT_DATE_STYLE; j <= DateFormat.SHORT; j++ )
			{
				dateFormat = DateFormatFactory.getDateTimeInstance( i, j, locale );
				try
				{
					resultDate = dateFormat.parse( source );
					return resultDate;
				}
				catch ( ParseException e1 )
				{
				}
			}
			 
			if ( !existTime )
			{
				dateFormat = DateFormatFactory.getDateInstance( i, locale );
				try