File	Doc	Category	Size	Date	Package
NumericConstraint.java	API Doc	Example	3729	Sun Dec 14 22:47:38 GMT 2003	oreilly.hcj.datamodeling.constraints

NumericConstraint

• java.lang.Object
  • ObjectConstraint

Fields Summary
private static final String	ERR_NOT_NUMBER Error message for a non number type passed.
private static final String	ERR_MISMATCH Error message for a type mismatch.
private Number	maxValue Holds value of property maxValue.
private Number	minValue Holds value of property minValue.

Constructors Summary

public NumericConstraint(String name, boolean optional, Class dataType, Number minValue, Number maxValue) Creates a new instance of NumericConstraint. Note that since the values for min and max have to be of type Number, the numberType class must likewise be a descendant of that class otherwise the construction of the constraint wotn work. param name Contains the name of the constraint. param optional Indicates if the property is optional. param dataType The type of number this class is validating. param minValue The minimum value for the number. param maxValue The maximum value for the number. throws IllegalArgumentException If dataType is not a subclass of java.lang.Number. see java.lang.Number see mirror.datamodel.constraints.Constraint super(name, optional, dataType); if (!Number.class.isAssignableFrom(dataType)) { throw new IllegalArgumentException(ERR_NOT_NUMBER); } if (!(minValue.getClass().equals(dataType))) { throw new IllegalArgumentException(ERR_MISMATCH); } if (!(maxValue.getClass().equals(dataType))) { throw new IllegalArgumentException(ERR_MISMATCH); } // ** validation done this.minValue = minValue; this.maxValue = maxValue;

Methods Summary
public java.lang.Number	getMaxValue() Getter for property maxValue. return Value of property maxValue. return this.maxValue;
public java.lang.Number	getMinValue() Getter for property minValue. return Value of property minValue. return this.minValue;
public void	validate(java.lang.Object obj) Validate the given object against the constraint. Implements all the constraints of the superclass Constraint. The number is validated to make sure it is between the min and max values. param obj The object to validate. throws ConstraintException If the constraint is violated. super.validate(obj); if (obj != null) { if (((Comparable)obj).compareTo(minValue) < 0) { throw new ConstraintException(ConstraintExceptionType.VALUE_BELOW_MINIMUM); } if (((Comparable)obj).compareTo(maxValue) > 0) { throw new ConstraintException(ConstraintExceptionType.VALUE_ABOVE_MAXIMUM); } }