Package net.ssehub.easy.instantiation.core.model.artifactModel.xml

Class AttributeSynchronizer

java.lang.Object

org.xml.sax.helpers.DefaultHandler

net.ssehub.easy.instantiation.core.model.artifactModel.xml.AttributeSynchronizer

All Implemented Interfaces:

org.xml.sax.ContentHandler, org.xml.sax.DTDHandler, org.xml.sax.EntityResolver, org.xml.sax.ErrorHandler

class AttributeSynchronizer
extends org.xml.sax.helpers.DefaultHandler

Implements an XML attribute synchronizer. As DOM parsing does (usually) not preserve attribute sequences, we synchronize XML attributes if needed through an additional SAX parsing run. This is a SAX content handler maintaining an internal iterator. For each matching element, we synchronize the attributes in the respective VIL attribute fragment.

Author:

Holger Eichelberger

Field Summary

Fields

Modifier and Type	Field	Description
private static int	INDEX_NODE
private XmlNode	iter
private java.util.Map<XmlNode,java.lang.Integer>	positions

Constructor Summary

Constructors

Constructor	Description
AttributeSynchronizer(XmlElement root)	Creates an attribute synchronizer.

Method Summary

Modifier and Type	Method	Description
private XmlNode	advanceIter(XmlNode current)	Advances the iterator position.
private XmlNode	checkPositions(XmlNode node)	Checks whether the initial position of node is stored in positions.
private XmlNode	consumeNonXmlElements(XmlNode node)	Consumes all following non-XmlElements.
void	startElement(java.lang.String uri, java.lang.String localName, java.lang.String qName, org.xml.sax.Attributes attributes)

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

characters, endDocument, endElement, endPrefixMapping, error, fatalError, ignorableWhitespace, notationDecl, processingInstruction, resolveEntity, setDocumentLocator, skippedEntity, startDocument, startPrefixMapping, unparsedEntityDecl, warning

Methods inherited from class java.lang.Object

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

Field Detail

INDEX_NODE

private static final int INDEX_NODE

See Also:

Constant Field Values

iter

private XmlNode iter

positions

private java.util.Map<XmlNode,java.lang.Integer> positions

Constructor Detail

AttributeSynchronizer

AttributeSynchronizer(XmlElement root)

Creates an attribute synchronizer.

Parameters:

root - the root node to start from

Method Detail

startElement

public void startElement(java.lang.String uri,
                         java.lang.String localName,
                         java.lang.String qName,
                         org.xml.sax.Attributes attributes)
                  throws org.xml.sax.SAXException

Specified by:

startElement in interface org.xml.sax.ContentHandler

Overrides:

startElement in class org.xml.sax.helpers.DefaultHandler

Throws:

org.xml.sax.SAXException

checkPositions

private XmlNode checkPositions(XmlNode node)

Checks whether the initial position of node is stored in positions.

Parameters:

node - the node to check (may be null, ignored then)

Returns:

node

advanceIter

private XmlNode advanceIter(XmlNode current)

Advances the iterator position. Does not change iter directly, but returns the next value of iter

Parameters:

current - the current node

Returns:

the next iterator position

consumeNonXmlElements

private XmlNode consumeNonXmlElements(XmlNode node)

Consumes all following non-XmlElements.

Parameters:

node - the node to start consuming for (may be null)

Returns:

the next non-XmlElement, may be node, may be null

See Also:

advanceIter(XmlNode)