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()
    Creates and returns a copy of this object.
    boolean
    equals(Object obj)
    Indicates whether some other object is "equal to" this one.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    Finalization is deprecated and subject to removal in a future release.
    final Class<?>
    getClass()
    Returns the runtime class of this Object.
    int
    hashCode()
    Returns a hash code value for this object.
    final void
    notify()
    Wakes up a single thread that is waiting on this object's monitor.
    final void
    notifyAll()
    Wakes up all threads that are waiting on this object's monitor.
    String
    toString()
    Returns a string representation of the object.
    final void
    wait()
    Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
    final void
    wait(long timeoutMillis)
    Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
    final void
    wait(long timeoutMillis, int nanos)
    Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

  • 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.