org.netbeans.spi.settings

Class DOMConvertor

java.lang.Object

org.netbeans.spi.settings.Convertor

org.netbeans.spi.settings.DOMConvertor

public abstract class DOMConvertor
extends Convertor

DOMConvertor extends the Convertor to allow to compose output of several convertors into one xml document. For more info see Composed Content.

Since:

1.1

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	DOMConvertor(String publicID, String systemID, String rootElement) Creat a DOMConvertor

Method Summary

Modifier and Type	Method and Description
protected static Object	delegateRead(Element element) delegate the read operation to a convertor referenced by dtd_public_id
protected static Element	delegateWrite(Document doc, Object obj) delegate the write operation to a convertor able to write obj.
protected static Lookup	findContext(Document doc) get a context associated with the document doc.
Object	read(Reader r) Read content from r and delegate to readElement(org.w3c.dom.Element) passing parsed content as a root element of DOM document
protected abstract Object	readElement(Element element) Provide an object constructed from the element.
void	write(Writer w, Object inst) Write object described by DOM document filled by writeElement(org.w3c.dom.Document, org.w3c.dom.Element, java.lang.Object)
protected abstract void	writeElement(Document doc, Element element, Object obj) Fill a DOM element describing obj with attributes or subelements.

Methods inherited from class org.netbeans.spi.settings.Convertor

findContext, findContext, registerSaver, unregisterSaver

Methods inherited from class java.lang.Object

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

Constructor Detail

DOMConvertor

protected DOMConvertor(String publicID,
                       String systemID,
                       String rootElement)

Creat a DOMConvertor

Parameters:

publicID - public ID of DOCTYPE

systemID - system ID of DOCTYPE

rootElement - qualified name of root element

Method Detail

read

public final Object read(Reader r)
                  throws IOException,
                         ClassNotFoundException

Read content from r and delegate to readElement(org.w3c.dom.Element) passing parsed content as a root element of DOM document

Specified by:

read in class Convertor

Parameters:

r - stream containing stored object

Returns:

the read setting object

Throws:

IOException - if the object cannot be read

ClassNotFoundException - if the object class cannot be resolved

Since:

1.1

write

public final void write(Writer w,
                        Object inst)
                 throws IOException

Write object described by DOM document filled by writeElement(org.w3c.dom.Document, org.w3c.dom.Element, java.lang.Object)

Specified by:

write in class Convertor

Parameters:

w - stream into which inst is written

inst - the setting object to be written

Throws:

IOException - if the object cannot be written

Since:

1.1

readElement

protected abstract Object readElement(Element element)
                               throws IOException,
                                      ClassNotFoundException

Provide an object constructed from the element.

Parameters:

element - represents a read object in a DOM document

Returns:

an setting object

Throws:

IOException - if the object cannot be read

ClassNotFoundException - if the object class cannot be resolved

Since:

1.1

writeElement

protected abstract void writeElement(Document doc,
                                     Element element,
                                     Object obj)
                              throws IOException,
                                     DOMException

Fill a DOM element describing obj with attributes or subelements.

Parameters:

doc - a DOM document allowing to create elements describing passed object

element - represents a written object in a DOM document

obj - an object to convert

Throws:

IOException - if the object cannot be written

DOMException - if an element construction failed

Since:

1.1

delegateRead

protected static final Object delegateRead(Element element)
                                    throws IOException,
                                           ClassNotFoundException

delegate the read operation to a convertor referenced by dtd_public_id

Parameters:

element - DOM element that should be read

Returns:

an setting object

Throws:

IOException - if the object cannot be read

ClassNotFoundException - if the object class cannot be resolved

Since:

1.1

See Also:

readElement(org.w3c.dom.Element)

delegateWrite

protected static final Element delegateWrite(Document doc,
                                             Object obj)
                                      throws IOException,
                                             DOMException

delegate the write operation to a convertor able to write obj.

Parameters:

doc - a DOM document allowing to create elements describing passed object

obj - an object to convert

Returns:

a DOM element representation

Throws:

IOException - if the object cannot be written

DOMException - if an element construction failed

Since:

1.1

See Also:

writeElement(org.w3c.dom.Document, org.w3c.dom.Element, java.lang.Object)

findContext

protected static Lookup findContext(Document doc)

get a context associated with the document doc. It can contain various info like a file location of the read document etc.

Parameters:

doc - a DOM document containing stored object

Returns:

a context associated with the document

Since:

1.2