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
* Double -> java.lang.Double<br>
	 * Character -> java.lang.String<br>
	 * Decimal -> java.math.BigDecimal<br>
	 * Date -> java.sql.Date<br>
	 * Time -> java.sql.Time<br>
	 * Timestamp -> java.sql.Timestamp<br>
	 * Blob -> java.sql.Blob<br>
	 * Clob -> java.sql.Clob<br>
     * Boolean -> java.lang.Boolean<br></i>
	 * @param odaDataTypeCode   an ODA data type code
	 * @return  the ODI type class that corresponds with 
	 *          the specified ODA data type
	 * @throws BirtException if the specified ODA data type is not a supported type
	 */
	public static Class toOdiTypeClass( int odaDataTypeCode )
			throws BirtException
	{
		if ( odaDataTypeCode != Types.CHAR
				&& odaDataTypeCode != Types.INTEGER
				&& odaDataTypeCode != Types.DOUBLE
				&& odaDataTypeCode != Types.DECIMAL
				&& odaDataTypeCode != Types.DATE
				&& odaDataTypeCode != Types.TIME
				&& odaDataTypeCode != Types.TIMESTAMP
				&& odaDataTypeCode != Types.BLOB
				&& odaDataTypeCode != Types.CLOB
                && odaDataTypeCode != Types.BOOLEAN
				&& odaDataTypeCode != Types.NULL )
		{
			throw new CoreException( ResourceConstants.INVALID_TYPE);