FileDocCategorySizeDatePackage
NumberConstraint.javaAPI DocGlassfish v2 API4353Fri May 04 22:35:00 BST 2007com.sun.enterprise.tools.common.validation.constraints

NumberConstraint

public class NumberConstraint extends ConstraintUtils implements Constraint
NumberConstraint is a {@link Constraint} to validate numbers. It implements Constraint interface and extends {@link ConstraintUtils} class. match method of this object returns empty Collection if the value being validated is a number; else it returns a Collection with a {@link ConstraintFailure} object in it. ConstraintUtils class provides utility methods for formating failure messages and a print method to print this object.
author
Rajeshwar Patil
version
%I%, %G%

Fields Summary
Constructors Summary
public NumberConstraint()
Creates a new instance of NumberConstraint.
Methods Summary
public java.util.Collectionmatch(java.lang.String value, java.lang.String name)
Validates the given value against this Constraint.

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 Constraint failure, to construct the failure message.
return
Collection the Collection of ConstraintFailure Objects. Collection is empty if there are no failures. This method will fail, if the given value is non-numeric.

        ArrayList failed_constrained_list = new ArrayList();
        if(null != value){
            try {
                new Double(value);
                return failed_constrained_list;
            } catch(NumberFormatException e) {
                String failureMessage = formatFailureMessage(toString(), value,
                    name);

                failed_constrained_list.add(new ConstraintFailure(toString(),
                    value, name, failureMessage, BundleReader.getValue(
                        "MSG_NumberConstraint_Failure")));              //NOI18N
            }
        }
        return failed_constrained_list;