de.pangaea.metadataportal.harvester
Class XPathResolverImpl

java.lang.Object
  de.pangaea.metadataportal.harvester.XPathResolverImpl

All Implemented Interfaces:

XPathFunctionResolver, XPathVariableResolver

public final class XPathResolverImpl
extends Object
implements XPathFunctionResolver, XPathVariableResolver

Helper class that implements several XPath interfaces to supply variables and functions to XPath expressions. This is a singleton!

Author:

Uwe Schindler

Field Summary

static Set<QName>	BASE_VARIABLES
static QName	FUNCTION_DOC_UNIQUE
static String	INDEX_BUILDER_NAMESPACE
static QName	VARIABLE_DOC_DATESTAMP
static QName	VARIABLE_DOC_IDENTIFIER
static QName	VARIABLE_INDEX_DISPLAYNAME
static QName	VARIABLE_INDEX_ID

Method Summary

Map<QName,Object>	getCurrentVariableMap()
static XPathResolverImpl	getInstance()
Map<QName,Object>	initVariables()
XPathFunction	resolveFunction(QName functionName, int arity)
Object	resolveVariable(QName variableName)
void	setIndexBuilder(IndexBuilder index)
void	unsetIndexBuilder()
void	unsetVariables()

Methods inherited from class java.lang.Object

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

Field Detail

INDEX_BUILDER_NAMESPACE

public static final String INDEX_BUILDER_NAMESPACE

FUNCTION_DOC_UNIQUE

public static final QName FUNCTION_DOC_UNIQUE

VARIABLE_DOC_IDENTIFIER

public static final QName VARIABLE_DOC_IDENTIFIER

VARIABLE_DOC_DATESTAMP

public static final QName VARIABLE_DOC_DATESTAMP

VARIABLE_INDEX_DISPLAYNAME

public static final QName VARIABLE_INDEX_DISPLAYNAME

VARIABLE_INDEX_ID

public static final QName VARIABLE_INDEX_ID

BASE_VARIABLES

public static final Set<QName> BASE_VARIABLES

Method Detail

getInstance

public static XPathResolverImpl getInstance()

resolveFunction

public XPathFunction resolveFunction(QName functionName,
                                     int arity)

Specified by:

resolveFunction in interface XPathFunctionResolver

resolveVariable

public Object resolveVariable(QName variableName)

Specified by:

resolveVariable in interface XPathVariableResolver

initVariables

public Map<QName,Object> initVariables()

getCurrentVariableMap

public Map<QName,Object> getCurrentVariableMap()

unsetVariables

public void unsetVariables()

setIndexBuilder

public void setIndexBuilder(IndexBuilder index)

unsetIndexBuilder

public void unsetIndexBuilder()