/* DomProcessingInstruction.java -- 
   Copyright (C) 1999,2000,2001,2004 Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
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any later version.

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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA.

Linking this library statically or dynamically with other modules is
making a combined work based on this library.  Thus, the terms and
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As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
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package gnu.xml.dom;

import org.w3c.dom.DOMException;
import org.w3c.dom.ProcessingInstruction;

/**
 * <p> "ProcessingInstruction" (PI) implementation.
 * This is a non-core DOM class, supporting the "XML" feature. </p>
 *
 * <p> Unlike other DOM APIs in the "XML" feature, this one fully
 * exposes the functionality it describes.  So there is no reason
 * inherent in DOM to avoid using this API, unless you want to rely
 * on NOTATION declarations to associate meaning with your PIs;
 * there is no vendor-neutal way to record those notations in DOM.</p>
 *
 * <p> Also of note is that PI support is part of SAX, so that XML
 * systems using PIs can choose among multiple APIs. </p>
 *
 * @see DomNotation
 *
 * @author David Brownell 
 * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
 */
public class DomProcessingInstruction
  extends DomNode
  implements ProcessingInstruction
{
  
  private String target;
  private String data;
  
  /**
   * Constructs a ProcessingInstruction node associated with the
   * specified document, with the specified data.
   *
   * <p>This constructor should only be invoked by a Document object as
   * part of its createProcessingInstruction functionality, or through
   * a subclass which is similarly used in a "Sub-DOM" style layer. 
   */
  protected DomProcessingInstruction(DomDocument owner,
                                     String target, String data)
  {
    super(PROCESSING_INSTRUCTION_NODE, owner);
    this.target = target;
    this.data = data;
  }

  /**
   * <b>DOM L1</b>
   * Returns the target of the processing instruction.
   */
  public final String getTarget()
  {
    return target;
  }

  /**
   * <b>DOM L1</b>
   * Returns the target of the processing instruction
   * (same as getTarget).
   */
  public final String getNodeName()
  {
    return target;
  }

  /**
   * <b>DOM L1</b>
   * Returns the data associated with the processing instruction.
   */
  public final String getData()
  {
    return data;
  }

  /**
   * <b>DOM L1</b>
   * Returns the data associated with the processing instruction
   * (same as getData).
   */
  public final String getNodeValue()
  {
    return data;
  }

  /**
   * <b>DOM L1</b>
   * Assigns the data associated with the processing instruction;
   * same as setNodeValue.
   */
  public final void setData(String data)
  {
    setNodeValue(data);
  }
  
  /**
   * <b>DOM L1</b>
   * Assigns the data associated with the processing instruction.
   */
  public final void setNodeValue(String data)
  {
    if (isReadonly())
      {
        throw new DomDOMException(DOMException.NO_MODIFICATION_ALLOWED_ERR);
      }
    this.data = data;
  }
  
}