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
return toBoolean( source );
        if ( toTypeClass == Time.class )
            return toSqlTime( source );
        if ( toTypeClass == java.sql.Date.class)
           	return toSqlDate( source );
        if ( toTypeClass == java.sql.Timestamp.class ) 
			return toDate( source );
		if ( toTypeClass == Date.class ) 
			return toDate( source );
		if ( toTypeClass == Double.class )
			return toDouble( source );
		if ( toTypeClass == String.class )
			return toString( source );
		if ( toTypeClass == Blob.class )
			return toBlob( source );
		if ( toTypeClass == byte[].class )
			return source;
		throw new CoreException( ResourceConstants.INVALID_TYPE,
				resourceBundle );
	}
	/**
	 * Boolean -> Integer
	 * 		true 	-> 1
	 * 		others 	-> 0 
	 * Date -> Integer
	 * 		Date.getTime();
	 * String -> Integer
	 * 		Integer.valueOf();
	 * @param source
	 * @return