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/*
* MandatoryConstraint.java March 24, 2003, 5:17 PM
*
*/
package com.sun.enterprise.tools.common.validation.constraints;
import java.util.ArrayList;
import java.util.Collection;
import com.sun.enterprise.tools.common.validation.constraints.ConstraintFailure;
import com.sun.enterprise.tools.common.validation.util.BundleReader;
/**
* MandatoryConstraint is a {@link Constraint} to validate non-null objects.
* It implements <code>Constraint</code> interface and extends
* {@link ConstraintUtils} class.
* <code>match</code> method of this object returns empty
* <code>Collection</code> if the value/object being validated is non
* <code>null</code>; else it returns a <code>Collection</code> with a
* {@link ConstraintFailure} object in it. <code>ConstraintUtils</code> class
* provides utility methods for formating failure messages and a
* <code>print<method> method to print this object.
*
* @author Rajeshwar Patil
* @version %I%, %G%
*/
public class MandatoryConstraint extends ConstraintUtils
implements Constraint{
/** Creates a new instance of <code>MandatoryConstraint</code>. */
public MandatoryConstraint() {
}
/**
* Validates the given value against this <code>Constraint</code>.
*
* @param value the value to be validated.
* @param name the element name, value of which is being validated.
* It is used only in case of <code>Constraint</code> failure, to construct
* the failure message.
*
* @return <code>Collection</code> the Collection of
* <code>ConstraintFailure</code> Objects. Collection is empty if
* there are no failures.
*/
public Collection match(String value, String name) {
return match((Object)value, name);
}
/**
* Validates the given value against this <code>Constraint</code>.
*
* @param value the value to be validated.
* @param name the element name, value of which is being validated.
* It is used only in case of <code>Constraint</code> failure to construct
* the faiulure message.
*
* @return <code>Collection</code> the Collection of
* <code>ConstraintFailure</code> Objects. Collection is empty if
* there are no failures. This method will fail, if the given vlaue is null.
*/
public java.util.Collection match(Object value, String name) {
Collection failed_constrained_list = new ArrayList();
if (null == value){
String failureMessage = formatFailureMessage(toString(), name);
failed_constrained_list.add(new ConstraintFailure(toString(), value,
name, failureMessage, BundleReader.getValue(
"MSG_MandatoryConstraint_Failure"))); //NOI18N
}
return failed_constrained_list;
}
}
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