Class Schema

java.lang.Object
javax.xml.validation.Schema
public abstract class Schema extends 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).

Since:
1.5
See Also:

  • Constructor Summary

    Constructors
    Modifier
    Constructor
    Description
    protected
    Schema()
    Constructor for the derived class.

  • Method Summary

    Modifier and Type
    Method
    Description
    abstract Validator
    newValidator()
    Creates a new Validator for this Schema.
    abstract ValidatorHandler
    newValidatorHandler()
    Creates a new ValidatorHandler for this Schema.

    Methods declared in class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    Modifier and Type
    Method
    Description
    protected Object
    clone()
    Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
    boolean
    equals(Object o)
    Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    May cause performance issues, deadlocks and hangs.
    final Class<? extends Object>
    getClass()
    Answers the unique instance of java.lang.Class which represents the class of the receiver.
    int
    hashCode()
    Answers an integer hash code for the receiver.
    final void
    notify()
    Causes one thread which is waiting on the receiver to be made ready to run.
    final void
    notifyAll()
    Causes all threads which are waiting on the receiver to be made ready to run.
    String
    toString()
    Answers a string containing a concise, human-readable description of the receiver.
    final void
    wait()
    Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
    final void
    wait(long time)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
    final void
    wait(long time, int frac)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

  • Constructor Details

    • Schema

      protected Schema()
      Constructor for the derived class.

      The constructor does nothing.

  • Method Details

    • newValidator

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

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

      Implementors should assure that the properties set on the SchemaFactory that created this Schema are also set on the Validator constructed.

      Returns:
      Always return a non-null valid object.

    • newValidatorHandler

      public abstract ValidatorHandler newValidatorHandler()
      Creates a new ValidatorHandler for this Schema.

      Implementors should assure that the properties set on the SchemaFactory that created this Schema are also set on the ValidatorHandler constructed.

      Returns:
      Always return a non-null valid object.