Bug 152443 Support boolean type in data set
Support boolean type in data set. It'll cause some data transform issue with absence of boolean type.
core/org.eclipse.birt.core/src/org/eclipse/birt/core/data/DataTypeUtil.java
String str = ( (Number) source ).toString( );
			try
			{
				return new BigDecimal( str );
			}
			catch ( NumberFormatException e )
			{
				throw new CoreException( 
						ResourceConstants.CONVERT_FAILS,
						new Object[]{
								str, "BigDecimal"
						} );
			}
		}
		else if ( source instanceof Boolean )
		{
			if ( true == ( (Boolean) source ).booleanValue( ) )
				return new BigDecimal( 1d );
			return new BigDecimal( 0d );
		}
		else if ( source instanceof Date )
		{
			long longValue = ( (Date) source ).getTime( );
			return new BigDecimal( longValue );
		}
		else if ( source instanceof String )
		{
			try
			{
				return new BigDecimal( (String) source );