Bug 207250 Check blank value for datetime type parameter from url.[0002][0705]
Description: Check blank value for datetime type parameter from url. Build number:2.3.0.v20071023 Steps to reproduce: 1. New a datetime parameter mydt,listbox, tick off isRequired. 2. Preview in external browser and add "&dt=" in url, press enter. Expected result: Error message to indicate blank value isn't allowed for this parameter. Actual result: No error message and blank value is accepted. I tried to new a jsp and use <birt:paramDef> to pass the blank value and the blank value is accepted,too. Error log:n/a
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/DataUtil.java
case Types.DOUBLE :
			case Types.FLOAT :
				return "DOUBLE"; 
			case Types.VARCHAR :
				return "STRING"; 
			case Types.DATE :
				return "DATE"; 
			case Types.TIME :
				return "TIME"; 
			case Types.TIMESTAMP :
				return "TIMESTAMP"; 
			case Types.NUMERIC :
			case Types.DECIMAL :
				return "BIGDECIMAL"; 
			case Types.BLOB :
				return "BLOB"; 
			case Types.CLOB :
				return "CLOB"; 
			case Types.BOOLEAN :
				return "BOOLEAN"; 
			default :
				return "STRING"; 
		}
	}
	/**
	 * Check the passed String whether be contained in list
	 * 
	 * @param values
	 * @param value
	 * @param ifDelete