Class FrequencyHandler

java.lang.Object

org.xml.sax.helpers.DefaultHandler

com.sun.xml.analysis.frequency.FrequencyHandler

All Implemented Interfaces:

ContentHandler, DTDHandler, EntityResolver, ErrorHandler

public class FrequencyHandler
extends DefaultHandler

A SAX-based handler to collect the frequency of occurences of properties of information items in one or more infosets.

Field Summary

Fields

Modifier and Type	Field	Description
private FrequencySet<QName>	attributes
private FrequencySet<String>	attributeValues
private FrequencySet<QName>	elements
private FrequencySet<String>	localNames
private FrequencySet<String>	namespaces
private Map<String, Set<QName>>	namespacesToAttributes
private Map<String, Set<QName>>	namespacesToElements
private Map<String,String>	namespaceURIToPrefix
private StringBuilder	prefixBuilder
private char	prefixCharacter
private FrequencySet<String>	prefixes
private FrequencySet<String>	textContentValues

Constructor Summary

Constructors

Constructor	Description
FrequencyHandler()	The default frequency handler.
FrequencyHandler(SchemaProcessor sp)	A frequency handler initiated with information generated from a SchemaProcessor.

Method Summary

Modifier and Type	Method	Description
private void	addAll(Set to, Set<?> from)
private void	addQName(QName q, Map<String, Set<QName>> m, FrequencySet<QName> fhm)
void	addQNameToAttributes(QName q)
void	addQNameToElements(QName q)
void	addXsiAttributes()
private void	bucketQNamesToNamespace(Set<QName> s, Map<String, Set<QName>> m)
private QName	createQName(String uri, String localName, String qName)
void	generateQNamesWithPrefix()	Generate qualified names that have not been processed.
private void	generateQNamesWithPrefix(Map<String, Set<QName>> m, FrequencySet<QName> fhm, Map<String,String> namespaceURIToPrefix)
FrequencyBasedLists	getLists()	Deprecated.
Map<String,String>	getNamespaceURIToPrefixMap()
private String	getNewPrefix()
org.jvnet.fastinfoset.Vocabulary	getVocabulary()	Get the vocabulary
void	startElement(String uri, String localName, String qName, Attributes atts)
void	startPrefixMapping(String prefix, String uri)

Methods inherited from class DefaultHandler

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

Methods inherited from class Object

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

Field Details

namespacesToElements

private Map<String, Set<QName>> namespacesToElements

namespacesToAttributes

private Map<String, Set<QName>> namespacesToAttributes

namespaceURIToPrefix

private Map<String,String> namespaceURIToPrefix

prefixes

private FrequencySet<String> prefixes

namespaces

private FrequencySet<String> namespaces

localNames

private FrequencySet<String> localNames

elements

private FrequencySet<QName> elements

attributes

private FrequencySet<QName> attributes

attributeValues

private FrequencySet<String> attributeValues

textContentValues

private FrequencySet<String> textContentValues

prefixBuilder

private StringBuilder prefixBuilder

prefixCharacter

private char prefixCharacter

Constructor Details

FrequencyHandler

public FrequencyHandler()

The default frequency handler.

FrequencyHandler

public FrequencyHandler(SchemaProcessor sp)

A frequency handler initiated with information generated from a SchemaProcessor.

Parameters:

sp - the schema processor.

Method Details

addXsiAttributes

public void addXsiAttributes()

addQNameToElements

public void addQNameToElements(QName q)

addQNameToAttributes

public void addQNameToAttributes(QName q)

getLists

@Deprecated
public FrequencyBasedLists getLists()

Deprecated.

Get the frequency based lists of properties of information items.

Returns:

the frequency based lists.

getVocabulary

public org.jvnet.fastinfoset.Vocabulary getVocabulary()

Get the vocabulary

Returns:

the vocabulary.

generateQNamesWithPrefix

public void generateQNamesWithPrefix()

Generate qualified names that have not been processed.

Prefixes are automatically chosen.

TODO: check for clashes with prefixes generated and prefixes that have already occured.

getNamespaceURIToPrefixMap

public Map<String,String> getNamespaceURIToPrefixMap()

addAll

private void addAll(Set to,
 Set<?> from)

bucketQNamesToNamespace

private void bucketQNamesToNamespace(Set<QName> s,
 Map<String, Set<QName>> m)

startPrefixMapping

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

Specified by:

startPrefixMapping in interface ContentHandler

Overrides:

startPrefixMapping in class DefaultHandler

Throws:

SAXException

startElement

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

Specified by:

startElement in interface ContentHandler

Overrides:

startElement in class DefaultHandler

Throws:

SAXException

addQName

private void addQName(QName q,
 Map<String, Set<QName>> m,
 FrequencySet<QName> fhm)

createQName

private QName createQName(String uri,
 String localName,
 String qName)

generateQNamesWithPrefix

private void generateQNamesWithPrefix(Map<String, Set<QName>> m,
 FrequencySet<QName> fhm,
 Map<String,String> namespaceURIToPrefix)

getNewPrefix

private String getNewPrefix()