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
}
			catch ( SQLException e )
			{
				throw new CoreException( ResourceConstants.CONVERT_FAILS,
						new Object[]{
								source.toString( ), "Binary"
						} );
			}
		}
		else
			throw new CoreException( ResourceConstants.CONVERT_FAILS,
					new Object[]{
							source.toString( ), "Binary"
					} );
	}
	/**
	 * Converts a Java class to its corresponding data type constant
	 * defined in DataType 
	 */
	public static int toApiDataType( Class clazz )
	{
		if ( clazz == null )
			return DataType.UNKNOWN_TYPE;
		if ( clazz == DataType.AnyType.class )
			return DataType.ANY_TYPE;
		else if ( Integer.class.isAssignableFrom( clazz ) )
			return DataType.INTEGER_TYPE;
		else if ( Double.class.isAssignableFrom( clazz ) )
			return DataType.DOUBLE_TYPE;
		else if ( String.class.isAssignableFrom( clazz ) )