org.apache.jackrabbit.jcr2spi.xml
Class ImportHandler

java.lang.Object
  org.xml.sax.helpers.DefaultHandler
      org.apache.jackrabbit.jcr2spi.xml.ImportHandler

All Implemented Interfaces:

ContentHandler, DTDHandler, EntityResolver, ErrorHandler

public class ImportHandler
extends DefaultHandler

An ImportHandler instance can be used to import serialized data in System View XML or Document View XML. Processing of the XML is handled by specialized ContentHandlers (i.e. SysViewImportHandler and DocViewImportHandler).

The actual task of importing though is delegated to the implementation of the Importer interface.

Important Note:

These SAX Event Handlers expect that Namespace URI's and local names are reported in the start/endElement events and that start/endPrefixMapping events are reported (i.e. default SAX2 Namespace processing).

Field Summary

protected boolean

nsContextStarted this flag is used to determine whether a namespace context needs to be started in the startElement event or if the namespace context has already been started in a preceeding startPrefixMapping event; the flag is set per element in the first startPrefixMapping event and is cleared again in the following startElement event;

Constructor Summary

ImportHandler(Importer importer, org.apache.jackrabbit.spi.commons.namespace.NamespaceResolver nsResolver, NamespaceRegistry nsReg, org.apache.jackrabbit.spi.NameFactory nameFactory, org.apache.jackrabbit.spi.PathFactory pathFactory)

Method Summary

void	characters(char[] ch, int start, int length)
void	endDocument()
void	endElement(String namespaceURI, String localName, String qName)
void	endPrefixMapping(String prefix)
void	error(SAXParseException e)
void	fatalError(SAXParseException e)
String	getUniquePrefix(String uriHint) Returns a prefix that is unique among the already registered prefixes.
void	startDocument()
void	startElement(String namespaceURI, String localName, String qName, Attributes atts)
void	startPrefixMapping(String prefix, String uri)
void	warning(SAXParseException e)

Methods inherited from class org.xml.sax.helpers.DefaultHandler

ignorableWhitespace, notationDecl, processingInstruction, resolveEntity, setDocumentLocator, skippedEntity, unparsedEntityDecl

Methods inherited from class java.lang.Object

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

Field Detail

nsContextStarted

protected boolean nsContextStarted

this flag is used to determine whether a namespace context needs to be started in the startElement event or if the namespace context has already been started in a preceeding startPrefixMapping event; the flag is set per element in the first startPrefixMapping event and is cleared again in the following startElement event;

Constructor Detail

ImportHandler

public ImportHandler(Importer importer,
                     org.apache.jackrabbit.spi.commons.namespace.NamespaceResolver nsResolver,
                     NamespaceRegistry nsReg,
                     org.apache.jackrabbit.spi.NameFactory nameFactory,
                     org.apache.jackrabbit.spi.PathFactory pathFactory)

Method Detail

warning

public void warning(SAXParseException e)
             throws SAXException

Specified by:

warning in interface ErrorHandler

Overrides:

warning in class DefaultHandler

Throws:

SAXException

error

public void error(SAXParseException e)
           throws SAXException

Specified by:

error in interface ErrorHandler

Overrides:

error in class DefaultHandler

Throws:

SAXException

fatalError

public void fatalError(SAXParseException e)
                throws SAXException

Specified by:

fatalError in interface ErrorHandler

Overrides:

fatalError in class DefaultHandler

Throws:

SAXException

startDocument

public void startDocument()
                   throws SAXException

Specified by:

startDocument in interface ContentHandler

Overrides:

startDocument in class DefaultHandler

Throws:

SAXException

endDocument

public void endDocument()
                 throws SAXException

Specified by:

endDocument in interface ContentHandler

Overrides:

endDocument in class DefaultHandler

Throws:

SAXException

startPrefixMapping

public void startPrefixMapping(String prefix,
                               String uri)
                        throws SAXException

Specified by:

startPrefixMapping in interface ContentHandler

Overrides:

startPrefixMapping in class DefaultHandler

Throws:

SAXException

endPrefixMapping

public void endPrefixMapping(String prefix)
                      throws SAXException

Specified by:

endPrefixMapping in interface ContentHandler

Overrides:

endPrefixMapping in class DefaultHandler

Throws:

SAXException

startElement

public void startElement(String namespaceURI,
                         String localName,
                         String qName,
                         Attributes atts)
                  throws SAXException

Specified by:

startElement in interface ContentHandler

Overrides:

startElement in class DefaultHandler

Throws:

SAXException

characters

public void characters(char[] ch,
                       int start,
                       int length)
                throws SAXException

Specified by:

characters in interface ContentHandler

Overrides:

characters in class DefaultHandler

Throws:

SAXException

endElement

public void endElement(String namespaceURI,
                       String localName,
                       String qName)
                throws SAXException

Specified by:

endElement in interface ContentHandler

Overrides:

endElement in class DefaultHandler

Throws:

SAXException

getUniquePrefix

public String getUniquePrefix(String uriHint)
                       throws RepositoryException

Returns a prefix that is unique among the already registered prefixes.

Parameters:

uriHint - namespace uri that serves as hint for the prefix generation

Returns:

a unique prefix

Throws:

RepositoryException