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Using Jargus is rather simple. Before the actual validation can be performed, Validation has to be set up the following:

• Provide Validation with the parameters given from client side
• Attach a ValidationHandler (for output)
• Add constraints i.e. set up Validator objects

package samples.simple;


import de.caffeine.jargus.*;

public class Main {

	/**
	 * sample validation
	 */
	public static void main(String[] args) {

		/**
		 * Validation
		 */
		Validation pv = new Validation();

		/**
		 * parameters
		 * normaly from client
		 */
		pv.addParameter("1", "1v");
		pv.addParameter("2", "2v");

		pv.addParameter("gt1", "1");
		pv.addParameter("gt2", "1");

		pv.addParameter("e1", "1");
		pv.addParameter("e2", "1");

		pv.addParameter("c1", "thomas@caffeine.de");

		/**
		 * Handler
		 */
		SimpleValidationHandler list = new SimpleValidationHandler();
		pv.setHandler(list);


		/**
		 * check parameter
		 */
		pv.addCheck(new ExistValidator("xxxx1"));

		/**
		 * setup equal validator
		 */
		EqualValidator ev = new EqualValidator();
		ev.addValidationParameter("e1");
		ev.addValidationParameter("e2");
		ev.addValidationArgument("2");
		pv.addCheck(ev);

		/**
		 * setup exor validator
		 */
		ExorValidator exor = new ExorValidator();
		exor.addValidationParameter("1");
		exor.addValidationParameter("2");
		pv.addCheck(exor);

		/**
		 * setup greater validator
		 */
		GreaterValidator greater = new GreaterValidator("gt1", "gt2");
		pv.addCheck(greater);

		/**
		 * setup contains validator
		 */
		ContainsValidator contains = new ContainsValidator();
		contains.addValidationParameter("c1");
		contains.addValidationArgument("#");
		pv.addCheck(contains);

		/**
		 * setup or validator
		 */
		OrValidator or = new OrValidator();
		or.addValidationParameter("xxe1");
		pv.addCheck(or);

		/**
		 * start validation
		 */
		pv.validate();
	}

}