File	Doc	Category	Size	Date	Package
ObjectConstraint.java	API Doc	Example	2829	Sun Dec 14 22:47:42 GMT 2003	oreilly.hcj.datamodeling.constraints

ObjectConstraint

• java.lang.Object
  • Constraint

Fields Summary
private static final String	ERR_PRIMITIVE Holds the error message for attempting to validate primitives.
private Class	dataType Holds value of property dataType.
private boolean	optional Holds value of property optional.

Constructors Summary

public ObjectConstraint(String name, boolean optional, Class dataType) Creates a new instance of Constraint. param name Contains the name of the constraint. param optional Indicates if the property is optional. param dataType The data type of the object being constrained. throws IllegalArgumentException If dataType is a primitive. see mirror.datamodel.constraints.Constraint super(name); if (dataType.isPrimitive()) { throw new IllegalArgumentException(ERR_PRIMITIVE); } this.optional = optional; this.dataType = dataType;

Methods Summary
public java.lang.Class	getDataType() Getter for property dataType. return Value of property dataType. return this.dataType;
public boolean	isOptional() Getter for property optional. return Value of property optional. return this.optional;
public void	validate(java.lang.Object obj) Validate the given object against the constraint. param obj The object to validate. throws ConstraintException If the constraint is violated. if (obj == null) { if (!optional) { throw new ConstraintException(ConstraintExceptionType.NULL_NOT_ALLOWED); } } else { if (!dataType.isAssignableFrom(obj.getClass())) { throw new ConstraintException(ConstraintExceptionType.INVALID_DATA_TYPE); } }