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
throws BirtException
	{
		source = JavascriptEvalUtil.convertJavascriptValue( source );
		
		
		if ( toType == DataType.UNKNOWN_TYPE || toType == DataType.ANY_TYPE )
			return source;
		switch ( toType )
		{
			case DataType.INTEGER_TYPE :
				return toInteger( source );
			case DataType.DECIMAL_TYPE :
				return toBigDecimal( source );
			case DataType.BOOLEAN_TYPE :
				return toBoolean( source );
			case DataType.DATE_TYPE :
				return toDate( source );
			case DataType.DOUBLE_TYPE :
				return toDouble( source );
			case DataType.STRING_TYPE :
				return toString( source );
			case DataType.BLOB_TYPE :
				return toBytes( source );
			case DataType.BINARY_TYPE :
				return toBytes( source );
			case DataType.SQL_DATE_TYPE:
				return toSqlDate( source );
			case DataType.SQL_TIME_TYPE:
				return toSqlTime( source );
			default :