Class Schema


public abstract class Schema
extends java.lang.Object

Immutable in-memory representation of grammar.

This object represents a set of constraints that can be checked/ enforced against an XML document.

A Schema object is thread safe and applications are encouraged to share it across many parsers in many threads.

A Schema object is immutable in the sense that it shouldn't change the set of constraints once it is created. In other words, if an application validates the same document twice against the same Schema, it must always produce the same result.

A Schema object is usually created from SchemaFactory.

Two kinds of validators can be created from a Schema object. One is Validator, which provides highly-level validation operations that cover typical use cases. The other is ValidatorHandler, which works on top of SAX for better modularity.

This specification does not refine the Object.equals(java.lang.Object) method. In other words, if you parse the same schema twice, you may still get !schemaA.equals(schemaB).

See Also:
XML Schema Part 1: Structures, Extensible Markup Language (XML) 1.1, Extensible Markup Language (XML) 1.0 (Second Edition)

Method Summary
abstract  Validator newValidator()
          Creates a new Validator for this Schema.
abstract  ValidatorHandler newValidatorHandler()
          Creates a new ValidatorHandler for this Schema.
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail


public abstract Validator newValidator()
Creates a new Validator for this Schema.

A validator enforces/checks the set of constraints this object represents.

Always return a non-null valid object.


public abstract ValidatorHandler newValidatorHandler()
Creates a new ValidatorHandler for this Schema.
Always return a non-null valid object.

Copyright 2006 Apache XML Project. All Rights Reserved.