content: /*
   *  This file is part of AndroidIDE.
   *
   *  AndroidIDE is free software: you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation, either version 3 of the License, or
   *  (at your option) any later version.
   *
   *  AndroidIDE is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *  GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
   */
  
  /*
   * Copyright (c) 2003, 2005, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
   * particular file as subject to the "Classpath" exception as provided
   * by Oracle in the LICENSE file that accompanied this code.
   *
   * This code is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   * version 2 for more details (a copy is included in the LICENSE file that
   * accompanied this code).
   *
   * You should have received a copy of the GNU General Public License version
   * 2 along with this work; if not, write to the Free Software Foundation,
   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   */
  
  package jaxp.xml.validation;
  
  /**
   * Immutable in-memory representation of grammar.
   *
   * <p>
   * This object represents a set of constraints that can be checked/
   * enforced against an XML document.
   *
   * <p>
   * A {@link Schema} object is thread safe and applications are
   * encouraged to share it across many parsers in many threads.
   *
   * <p>
   * A {@link 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
   * {@link Schema}, it must always produce the same result.
   *
   * <p>
   * A {@link Schema} object is usually created from {@link SchemaFactory}.
   *
   * <p>
   * Two kinds of validators can be created from a {@link Schema} object.
   * One is {@link Validator}, which provides highly-level validation
   * operations that cover typical use cases. The other is
   * {@link ValidatorHandler}, which works on top of SAX for better
   * modularity.
   *
   * <p>
   * This specification does not refine
   * the {@link java.lang.Object#equals(java.lang.Object)} method.
   * In other words, if you parse the same schema twice, you may
   * still get <code>!schemaA.equals(schemaB)</code>.
   *
   * @author <a href="mailto:Kohsuke.Kawaguchi@Sun.com">Kohsuke Kawaguchi</a>
   * @see <a href="http://www.w3.org/TR/xmlschema-1/">XML Schema Part 1: Structures</a>
   * @see <a href="http://www.w3.org/TR/xml11/">Extensible Markup Language (XML) 1.1</a>
   * @see <a href="http://www.w3.org/TR/REC-xml">Extensible Markup Language (XML) 1.0 (Second Edition)</a>
   * @since 1.5
   */
  public abstract class Schema {
  
      /**
       * Constructor for the derived class.
       *
       * <p>
       * The constructor does nothing.
       */
      protected Schema() {
      }
  
      /**
       * Creates a new {@link Validator} for this {@link Schema}.
       *
       * <p>A validator enforces/checks the set of constraints this object
       * represents.</p>
       *
       * <p>Implementors should assure that the properties set on the
       * {@link SchemaFactory} that created this {@link Schema} are also
       * set on the {@link Validator} constructed.</p>
       *
       * @return
       *      Always return a non-null valid object.
       */
      public abstract Validator newValidator();
  
      /**
       * Creates a new {@link ValidatorHandler} for this {@link Schema}.
       *
       * <p>Implementors should assure that the properties set on the
       * {@link SchemaFactory} that created this {@link Schema} are also
       * set on the {@link ValidatorHandler} constructed.</p>
       *
       * @return
       *      Always return a non-null valid object.
       */
      public abstract ValidatorHandler newValidatorHandler();
  }
  