org.jhotdraw.xml
Class JavaxDOMInput

java.lang.Object
  org.jhotdraw.xml.JavaxDOMInput

All Implemented Interfaces:

DOMInput

public class JavaxDOMInput
extends java.lang.Object
implements DOMInput

DOMInput.

Version:

2.2 2006-12-31 Use a DocumentBuilder instead of a Transformer for better performance.
2.1 2006-07-08 Support objects which don't have an ID.
2.0 2006-06-10 Support for Enum and double array objects added.
1.0 February 17, 2004 Created.

Author:

Werner Randelshofer

Field Summary

protected static javax.xml.parsers.DocumentBuilder

documentBuilder

Constructor Summary

JavaxDOMInput(DOMFactory factory, java.io.InputStream in)

JavaxDOMInput(DOMFactory factory, java.io.Reader in)

Method Summary

void	closeElement() Closes the current element of the DOM Document.
boolean	getAttribute(java.lang.String name, boolean defaultValue) Gets an attribute of the current element of the DOM Document.
double	getAttribute(java.lang.String name, double defaultValue) Gets an attribute of the current element of the DOM Document.
int	getAttribute(java.lang.String name, int defaultValue) Gets an attribute of the current element of the DOM Document.
java.lang.String	getAttribute(java.lang.String name, java.lang.String defaultValue) Gets an attribute of the current element of the DOM Document.
protected static javax.xml.parsers.DocumentBuilder	getBuilder() Lazily create the document builder and keep a reference to it for performance improvement.
int	getElementCount() Returns the number of child elements of the current element.
int	getElementCount(java.lang.String tagName) Returns the number of child elements with the specified tag name of the current element.
java.util.List<java.lang.String>	getInheritedAttribute(java.lang.String name) Gets an attribute of the current element of the DOM Document and of all parent DOM elements.
java.lang.String	getTagName() Returns the tag name of the current element.
java.lang.String	getText() Gets the text of the current element of the DOM Document.
java.lang.String	getText(java.lang.String defaultValue) Gets the text of the current element of the DOM Document.
void	openElement(int index) Opens the element with the specified index and makes it the current node.
void	openElement(java.lang.String tagName) Opens the last element with the specified name and makes it the current node.
void	openElement(java.lang.String tagName, int index) Opens the element with the specified name and index and makes it the current node.
java.lang.Object	readObject() Reads an object from the current element.
java.lang.Object	readObject(int index) Reads an object from the current element.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

documentBuilder

protected static javax.xml.parsers.DocumentBuilder documentBuilder

Constructor Detail

JavaxDOMInput

public JavaxDOMInput(DOMFactory factory,
                     java.io.InputStream in)
              throws java.io.IOException

Throws:

java.io.IOException

JavaxDOMInput

public JavaxDOMInput(DOMFactory factory,
                     java.io.Reader in)
              throws java.io.IOException

Throws:

java.io.IOException

Method Detail

getBuilder

protected static javax.xml.parsers.DocumentBuilder getBuilder()
                                                       throws java.io.IOException

Lazily create the document builder and keep a reference to it for performance improvement.

Throws:

java.io.IOException

getTagName

public java.lang.String getTagName()

Returns the tag name of the current element.

Specified by:

getTagName in interface DOMInput

getAttribute

public java.lang.String getAttribute(java.lang.String name,
                                     java.lang.String defaultValue)

Gets an attribute of the current element of the DOM Document.

Specified by:

getAttribute in interface DOMInput

getText

public java.lang.String getText()

Gets the text of the current element of the DOM Document.

Specified by:

getText in interface DOMInput

getText

public java.lang.String getText(java.lang.String defaultValue)

Gets the text of the current element of the DOM Document.

Specified by:

getText in interface DOMInput

getInheritedAttribute

public java.util.List<java.lang.String> getInheritedAttribute(java.lang.String name)

Gets an attribute of the current element of the DOM Document and of all parent DOM elements.

Specified by:

getInheritedAttribute in interface DOMInput

getAttribute

public int getAttribute(java.lang.String name,
                        int defaultValue)

Gets an attribute of the current element of the DOM Document.

Specified by:

getAttribute in interface DOMInput

getAttribute

public double getAttribute(java.lang.String name,
                           double defaultValue)

Gets an attribute of the current element of the DOM Document.

Specified by:

getAttribute in interface DOMInput

getAttribute

public boolean getAttribute(java.lang.String name,
                            boolean defaultValue)

Gets an attribute of the current element of the DOM Document.

Specified by:

getAttribute in interface DOMInput

getElementCount

public int getElementCount()

Returns the number of child elements of the current element.

Specified by:

getElementCount in interface DOMInput

getElementCount

public int getElementCount(java.lang.String tagName)

Returns the number of child elements with the specified tag name of the current element.

Specified by:

getElementCount in interface DOMInput

openElement

public void openElement(int index)

Opens the element with the specified index and makes it the current node.

Specified by:

openElement in interface DOMInput

openElement

public void openElement(java.lang.String tagName)

Opens the last element with the specified name and makes it the current node.

Specified by:

openElement in interface DOMInput

openElement

public void openElement(java.lang.String tagName,
                        int index)

Opens the element with the specified name and index and makes it the current node.

Specified by:

openElement in interface DOMInput

closeElement

public void closeElement()

Closes the current element of the DOM Document. The parent of the current element becomes the current element.

Specified by:

closeElement in interface DOMInput

Throws:

java.lang.IllegalArgumentException - if the provided tagName does not match the tag name of the element.

readObject

public java.lang.Object readObject()
                            throws java.io.IOException

Reads an object from the current element.

Specified by:

readObject in interface DOMInput

Throws:

java.io.IOException

readObject

public java.lang.Object readObject(int index)
                            throws java.io.IOException

Reads an object from the current element.

Specified by:

readObject in interface DOMInput

Throws:

java.io.IOException