Bug 177691 Support Date/Time type in BIRT.
We plan to support Date/Time type in BIRT. Please refer to attached document/patch file for necessary info.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/util/ParameterValidationUtil.java
{
				Number number = doValidateNumberByPattern( dataType, format,
						value, locale );
				if ( number == null )
					return null;
				return new BigDecimal( number.toString( ) );
			}
			else if ( DesignChoiceConstants.PARAM_TYPE_INTEGER
					.equalsIgnoreCase( dataType ) )
			{
				Number number = doValidateNumberByPattern( dataType, format,
						value, locale );
				if ( number == null )
					return null;
				return new Integer( number.intValue( ) );
			}
			else if ( DesignChoiceConstants.PARAM_TYPE_BOOLEAN
					.equalsIgnoreCase( dataType ) )
			{
				return doValidateBoolean( value, locale );
			}
			else if ( DesignChoiceConstants.PARAM_TYPE_STRING
					.equalsIgnoreCase( dataType ) )
			{
				if ( StringUtil.isBlank( value ) )
					return value;
				else if ( DesignChoiceConstants.STRING_FORMAT_TYPE_UNFORMATTED
						.equalsIgnoreCase( format ) )
					return value;
				else