/**
 * Redistribution and use of this software and associated documentation ("Software"), with or
 * without modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain copyright statements and notices. Redistributions
 * must also contain a copy of this document.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
 * conditions and the following disclaimer in the documentation and/or other materials provided with
 * the distribution.
 *
 * 3. The name "Exolab" must not be used to endorse or promote products derived from this Software
 * without prior written permission of Intalio, Inc. For written permission, please contact
 * info@exolab.org.
 *
 * 4. Products derived from this Software may not be called "Exolab" nor may "Exolab" appear in
 * their names without prior written permission of Intalio, Inc. Exolab is a registered trademark of
 * Intalio, Inc.
 *
 * 5. Due credit should be given to the Exolab Project (http://www.exolab.org/).
 *
 * THIS SOFTWARE IS PROVIDED BY INTALIO, INC. AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESSED OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTALIO, INC. OR ITS
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
 * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Copyright 1999-2003 (C) Intalio, Inc. All Rights Reserved.
 *
 * $Id$
 */

package org.exolab.castor.xml.schema;

/**
 * An extension of the ContentType to support simple content extension and restriction for
 * complexTypes.
 * 
 *
 * @author <a href="mailto:kvisco@intalio.com">Keith Visco</a>
 * @version $Revision$ $Date: 2005-12-13 14:58:48 -0700 (Tue, 13 Dec 2005) $
 */
public class SimpleContent extends ContentType implements java.io.Serializable {
  /** SerialVersionUID */
  private static final long serialVersionUID = 6406889524623062413L;

  /**
   * The associated parent Schema
   */
  private Schema _schema = null;

  /**
   * The simpleType definition that defines this content type (if any)
   */
  private SimpleType _simpleType;

  /**
   * The name of the simpleType, used when the simpleType has not yet been read or added to the
   * parent Schema
   */
  private String _typeName = null;

  /**
   * Creates a new SimpleContent
   */
  public SimpleContent() {
    super(ContentType.SIMPLE);
  } // -- ContentType

  /**
   * Creates a new SimpleContent using the given SimpleContent. This constructor will copy from the
   * given SimpleContent.
   * 
   *
   * @param content the SimpleContent to copy from
   */
  public SimpleContent(SimpleContent content) {
    super(ContentType.SIMPLE);
    if (content != null) {
      _simpleType = content._simpleType;
      _typeName = content._typeName;
      _schema = content._schema;
    }
  } // -- ContentType

  /**
   * Creates a new SimpleContent
   *
   * @param simpleType the simpleType of this SimpleContent
   */
  public SimpleContent(SimpleType simpleType) {
    super(ContentType.SIMPLE);
    _simpleType = simpleType;
  } // -- SimpleContent

  /**
   * Creates a new SimpleContent
   *
   * @param schema the associated parent Schema
   * @param typeName the name of the base simpleType, or complexType (must also be a SimpleContent).
   *
   */
  public SimpleContent(Schema schema, String typeName) {
    super(ContentType.SIMPLE);
    if (schema == null) {
      String err = "The argument 'schema' must not be null.";
      throw new IllegalArgumentException(err);
    }
    if (typeName == null) {
      String err = "The argument 'typeName' must not be null.";
      throw new IllegalArgumentException(err);
    }
    _schema = schema;
    _typeName = typeName;
  } // -- SimpleContent

  /**
   * Creates a copy of this SimpleContent
   *
   * @return the new SimpleContent which is a copy of this SimpleContent
   */
  public SimpleContent copy() {
    return new SimpleContent(this);
  } // -- copy

  /**
   * Returns the simpleType that represents that contentType. This may be null, if no simpleType has
   * been set.
   * 
   * @return the simpleType that represents that contentType.
   */
  public SimpleType getSimpleType() {
    if ((_simpleType == null) && (_typeName != null)) {
      XMLType base = _schema.getType(_typeName);
      if (base != null) {
        if (base.isSimpleType()) {
          _simpleType = (SimpleType) base;
        } else {
          ComplexType complexType = (ComplexType) base;
          if (complexType.isSimpleContent()) {
            SimpleContent sc = (SimpleContent) complexType.getContentType();
            _simpleType = sc.getSimpleType();
          } else {
            // -- Report error
            String error = "The base ComplexType '" + _typeName + "' ";
            error += "must be a simpleContent.";
            throw new IllegalStateException(error);
          }
        }
      }
    }
    return _simpleType;
  } // -- getSimpleType

  /**
   * Returns the name of the associated type for this SimpleContent
   *
   * @return the associated type name for this SimpleContent.
   */
  public String getTypeName() {
    if (_simpleType != null) {
      return _simpleType.getName();
    }
    return _typeName;
  } // -- getTypeName


  /**
   * Sets the simpleType that represents that contentType.
   * 
   * @param simpleType the simpleType to set
   */
  public void setSimpleType(SimpleType simpleType) {
    _simpleType = simpleType;
  } // -- setSimpleType


} // -- SimpleContent
