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105 lines
2.8 KiB
105 lines
2.8 KiB
/*
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* Copyright (c) 2003, 2005, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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package javax.xml.validation;
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/**
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* Immutable in-memory representation of grammar.
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*
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* <p>
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* This object represents a set of constraints that can be checked/
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* enforced against an XML document.
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*
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* <p>
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* A {@link Schema} object is thread safe and applications are
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* encouraged to share it across many parsers in many threads.
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*
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* <p>
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* A {@link Schema} object is immutable in the sense that it shouldn't
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* change the set of constraints once it is created. In other words,
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* if an application validates the same document twice against the same
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* {@link Schema}, it must always produce the same result.
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*
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* <p>
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* A {@link Schema} object is usually created from {@link SchemaFactory}.
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*
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* <p>
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* Two kinds of validators can be created from a {@link Schema} object.
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* One is {@link Validator}, which provides highly-level validation
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* operations that cover typical use cases. The other is
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* {@link ValidatorHandler}, which works on top of SAX for better
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* modularity.
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*
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* <p>
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* This specification does not refine
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* the {@link java.lang.Object#equals(java.lang.Object)} method.
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* In other words, if you parse the same schema twice, you may
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* still get <code>!schemaA.equals(schemaB)</code>.
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*
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* @author <a href="mailto:Kohsuke.Kawaguchi@Sun.com">Kohsuke Kawaguchi</a>
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* @see <a href="http://www.w3.org/TR/xmlschema-1/">XML Schema Part 1: Structures</a>
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* @see <a href="http://www.w3.org/TR/xml11/">Extensible Markup Language (XML) 1.1</a>
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* @see <a href="http://www.w3.org/TR/REC-xml">Extensible Markup Language (XML) 1.0 (Second Edition)</a>
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* @since 1.5
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*/
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public abstract class Schema {
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/**
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* Constructor for the derived class.
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*
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* <p>
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* The constructor does nothing.
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*/
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protected Schema() {
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}
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/**
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* Creates a new {@link Validator} for this {@link Schema}.
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*
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* <p>A validator enforces/checks the set of constraints this object
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* represents.</p>
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*
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* <p>Implementors should assure that the properties set on the
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* {@link SchemaFactory} that created this {@link Schema} are also
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* set on the {@link Validator} constructed.</p>
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*
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* @return
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* Always return a non-null valid object.
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*/
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public abstract Validator newValidator();
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/**
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* Creates a new {@link ValidatorHandler} for this {@link Schema}.
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*
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* <p>Implementors should assure that the properties set on the
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* {@link SchemaFactory} that created this {@link Schema} are also
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* set on the {@link ValidatorHandler} constructed.</p>
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*
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* @return
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* Always return a non-null valid object.
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*/
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public abstract ValidatorHandler newValidatorHandler();
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}
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