Package org.alfresco.repo.search.impl.elasticsearch.query.language.lucene

Class LuceneXPathHandler

java.lang.Object

org.alfresco.repo.search.impl.elasticsearch.query.language.lucene.LuceneXPathHandler

All Implemented Interfaces:

org.jaxen.saxpath.XPathHandler

public class LuceneXPathHandler
extends Object
implements org.jaxen.saxpath.XPathHandler

Field Summary

Fields

Modifier and Type	Field	Description
static final int	MAX_PATH_LENGTH	Elasticsearch does not support span near queries with unlimited slop.

Constructor Summary

Constructors

Constructor	Description
LuceneXPathHandler(String field)

Method Summary

Modifier and Type	Method	Description
void	endAbsoluteLocationPath()	Any time an absolute XPath ends, we close a near span e.g.
void	endAdditiveExpr(int op)
void	endAllNodeStep()
void	endAndExpr(boolean create)
void	endCommentNodeStep()
void	endEqualityExpr(int op)
void	endFilterExpr()
void	endFunction()
void	endMultiplicativeExpr(int op)
void	endNameStep()
void	endOrExpr(boolean create)
void	endPathExpr()
void	endPredicate()
void	endProcessingInstructionNodeStep()
void	endRelationalExpr(int op)
void	endRelativeLocationPath()	Any time a relative XPath ends, we close a near span e.g.
void	endTextNodeStep()
void	endUnaryExpr(int op)
void	endUnionExpr(boolean create)
void	endXPath()
org.apache.lucene.queries.spans.SpanQuery	getQuery()	Get the resulting query
void	literal(String arg0)
void	number(double arg0)
void	number(int arg0)
void	startAbsoluteLocationPath()	An absolute location xPath starts with /
void	startAdditiveExpr()
void	startAllNodeStep(int axis)	Any time we meet a //, we close a near span e.g.
void	startAndExpr()
void	startCommentNodeStep(int arg0)
void	startEqualityExpr()
void	startFilterExpr()
void	startFunction(String arg0, String arg1)
void	startMultiplicativeExpr()
void	startNameStep(int axis, String nameSpace, String localName)	Any time we meet a namespace:localName in the path we reach this point: e.g.
void	startOrExpr()
void	startPathExpr()
void	startPredicate()
void	startProcessingInstructionNodeStep(int arg0, String arg1)
void	startRelationalExpr()
void	startRelativeLocationPath()	A relative location xPath starts with //
void	startTextNodeStep(int arg0)
void	startUnaryExpr()
void	startUnionExpr()
void	startXPath()
void	variableReference(String uri, String localName)

Methods inherited from class java.lang.Object

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

Field Details

MAX_PATH_LENGTH

public static final int MAX_PATH_LENGTH

Elasticsearch does not support span near queries with unlimited slop. Instead we support wildcard xpaths by using a hard coded maximum that is larger than we expect any path query to use.

See Also:

• Constant Field Values

Constructor Details

LuceneXPathHandler

public LuceneXPathHandler(String field)

Method Details

startXPath

public void startXPath()

Specified by:

startXPath in interface org.jaxen.saxpath.XPathHandler

endXPath

public void endXPath()

Specified by:

endXPath in interface org.jaxen.saxpath.XPathHandler

getQuery

public org.apache.lucene.queries.spans.SpanQuery getQuery()

Get the resulting query

Returns:

- the query

startAbsoluteLocationPath

public void startAbsoluteLocationPath()

An absolute location xPath starts with /

Specified by:

startAbsoluteLocationPath in interface org.jaxen.saxpath.XPathHandler

startRelativeLocationPath

public void startRelativeLocationPath()

A relative location xPath starts with //

Specified by:

startRelativeLocationPath in interface org.jaxen.saxpath.XPathHandler

startAllNodeStep

public void startAllNodeStep(int axis)

Any time we meet a //, we close a near span e.g. /a/b//c Once we meet // we close the /a/b span

Specified by:

startAllNodeStep in interface org.jaxen.saxpath.XPathHandler

Parameters:

axis -

endAbsoluteLocationPath

public void endAbsoluteLocationPath()

Any time an absolute XPath ends, we close a near span e.g. /a/b//c Once we meet the end we close the c span

Specified by:

endAbsoluteLocationPath in interface org.jaxen.saxpath.XPathHandler

endRelativeLocationPath

public void endRelativeLocationPath()

Any time a relative XPath ends, we close a near span e.g. /a/b//* Once we meet the end we close the * span adding a wildcard span term

Specified by:

endRelativeLocationPath in interface org.jaxen.saxpath.XPathHandler

startNameStep

public void startNameStep(int axis,
 String nameSpace,
 String localName)

Any time we meet a namespace:localName in the path we reach this point: e.g. /namespace:a//namespace:b namespace:a calls this method descending a child axis namespace:b calls this method descending a child axis

Specified by:

startNameStep in interface org.jaxen.saxpath.XPathHandler

Parameters:

axis - - the XPath axis we are descending into

nameSpace - - the nameSpace of the current element

localName - - the local name of the current element

endNameStep

public void endNameStep()

Specified by:

endNameStep in interface org.jaxen.saxpath.XPathHandler

endAllNodeStep

public void endAllNodeStep()

Specified by:

endAllNodeStep in interface org.jaxen.saxpath.XPathHandler

endAdditiveExpr

public void endAdditiveExpr(int op)

Specified by:

endAdditiveExpr in interface org.jaxen.saxpath.XPathHandler

endAndExpr

public void endAndExpr(boolean create)

Specified by:

endAndExpr in interface org.jaxen.saxpath.XPathHandler

endCommentNodeStep

public void endCommentNodeStep()

Specified by:

endCommentNodeStep in interface org.jaxen.saxpath.XPathHandler

endEqualityExpr

public void endEqualityExpr(int op)

Specified by:

endEqualityExpr in interface org.jaxen.saxpath.XPathHandler

endFilterExpr

public void endFilterExpr()

Specified by:

endFilterExpr in interface org.jaxen.saxpath.XPathHandler

endFunction

public void endFunction()

Specified by:

endFunction in interface org.jaxen.saxpath.XPathHandler

endMultiplicativeExpr

public void endMultiplicativeExpr(int op)

Specified by:

endMultiplicativeExpr in interface org.jaxen.saxpath.XPathHandler

endOrExpr

public void endOrExpr(boolean create)

Specified by:

endOrExpr in interface org.jaxen.saxpath.XPathHandler

endPathExpr

public void endPathExpr()

Specified by:

endPathExpr in interface org.jaxen.saxpath.XPathHandler

endPredicate

public void endPredicate()

Specified by:

endPredicate in interface org.jaxen.saxpath.XPathHandler

endProcessingInstructionNodeStep

public void endProcessingInstructionNodeStep()

Specified by:

endProcessingInstructionNodeStep in interface org.jaxen.saxpath.XPathHandler

endRelationalExpr

public void endRelationalExpr(int op)

Specified by:

endRelationalExpr in interface org.jaxen.saxpath.XPathHandler

endTextNodeStep

public void endTextNodeStep()

Specified by:

endTextNodeStep in interface org.jaxen.saxpath.XPathHandler

endUnaryExpr

public void endUnaryExpr(int op)

Specified by:

endUnaryExpr in interface org.jaxen.saxpath.XPathHandler

endUnionExpr

public void endUnionExpr(boolean create)

Specified by:

endUnionExpr in interface org.jaxen.saxpath.XPathHandler

literal

public void literal(String arg0)
             throws org.jaxen.saxpath.SAXPathException

Specified by:

literal in interface org.jaxen.saxpath.XPathHandler

Throws:

org.jaxen.saxpath.SAXPathException

number

public void number(double arg0)
            throws org.jaxen.saxpath.SAXPathException

Specified by:

number in interface org.jaxen.saxpath.XPathHandler

Throws:

org.jaxen.saxpath.SAXPathException

number

public void number(int arg0)
            throws org.jaxen.saxpath.SAXPathException

Specified by:

number in interface org.jaxen.saxpath.XPathHandler

Throws:

org.jaxen.saxpath.SAXPathException

startAdditiveExpr

public void startAdditiveExpr()

Specified by:

startAdditiveExpr in interface org.jaxen.saxpath.XPathHandler

startAndExpr

public void startAndExpr()

Specified by:

startAndExpr in interface org.jaxen.saxpath.XPathHandler

startCommentNodeStep

public void startCommentNodeStep(int arg0)

Specified by:

startCommentNodeStep in interface org.jaxen.saxpath.XPathHandler

startEqualityExpr

public void startEqualityExpr()

Specified by:

startEqualityExpr in interface org.jaxen.saxpath.XPathHandler

startFilterExpr

public void startFilterExpr()

Specified by:

startFilterExpr in interface org.jaxen.saxpath.XPathHandler

startFunction

public void startFunction(String arg0,
 String arg1)

Specified by:

startFunction in interface org.jaxen.saxpath.XPathHandler

startMultiplicativeExpr

public void startMultiplicativeExpr()

Specified by:

startMultiplicativeExpr in interface org.jaxen.saxpath.XPathHandler

startOrExpr

public void startOrExpr()

Specified by:

startOrExpr in interface org.jaxen.saxpath.XPathHandler

startPathExpr

public void startPathExpr()

Specified by:

startPathExpr in interface org.jaxen.saxpath.XPathHandler

startPredicate

public void startPredicate()

Specified by:

startPredicate in interface org.jaxen.saxpath.XPathHandler

startProcessingInstructionNodeStep

public void startProcessingInstructionNodeStep(int arg0,
 String arg1)

Specified by:

startProcessingInstructionNodeStep in interface org.jaxen.saxpath.XPathHandler

startRelationalExpr

public void startRelationalExpr()

Specified by:

startRelationalExpr in interface org.jaxen.saxpath.XPathHandler

startTextNodeStep

public void startTextNodeStep(int arg0)

Specified by:

startTextNodeStep in interface org.jaxen.saxpath.XPathHandler

startUnaryExpr

public void startUnaryExpr()

Specified by:

startUnaryExpr in interface org.jaxen.saxpath.XPathHandler

startUnionExpr

public void startUnionExpr()

Specified by:

startUnionExpr in interface org.jaxen.saxpath.XPathHandler

variableReference

public void variableReference(String uri,
 String localName)

Specified by:

variableReference in interface org.jaxen.saxpath.XPathHandler