Bug 177693 Support Date/Time data type in BIRT report engine.
Report engine needs to support new BIRT data type Date/Time. Please see attached for details.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/ParameterSelectionChoice.java
try {
			switch (type) {
				case IScalarParameterDefn.TYPE_BOOLEAN:
					this.value = DataTypeUtil.toBoolean(value);
					break;
				case IScalarParameterDefn.TYPE_DATE_TIME:
					this.value = DataTypeUtil.toDate(value);
					break;
				case IScalarParameterDefn.TYPE_DECIMAL:
					this.value = DataTypeUtil.toBigDecimal(value);
					break;
				case IScalarParameterDefn.TYPE_FLOAT:
					this.value = DataTypeUtil.toDouble(value);
					break;
				case IScalarParameterDefn.TYPE_INTEGER:
					this.value = DataTypeUtil.toInteger( value );
					break;
				case IScalarParameterDefn.TYPE_STRING:
				default:
					this.value = DataTypeUtil.toString(value);
					break;
			}
		} 
		catch (BirtException e) {
			log.log(Level.SEVERE, e.getLocalizedMessage(), e);
			this.value = null;
		}
	}
	/*
	 * (non-Javadoc)