Package org.eclipse.rdf4j.sail.lucene

Class QuerySpec

java.lang.Object

org.eclipse.rdf4j.sail.lucene.AbstractSearchQueryEvaluator

org.eclipse.rdf4j.sail.lucene.QuerySpec

All Implemented Interfaces:

SearchQueryEvaluator

public class QuerySpec
extends AbstractSearchQueryEvaluator

A QuerySpec holds information extracted from a TupleExpr corresponding with a single Lucene query. Access the patterns or use the get-methods to get the names of the variables to bind.

Constructor Summary

Constructors

Constructor	Description
QuerySpec(String matchesVarName, String propertyVarName, String scoreVarName, String snippetVarName, Resource subject, String queryString, IRI propertyURI)
QuerySpec(StatementPattern matchesPattern, StatementPattern queryPattern, StatementPattern propertyPattern, StatementPattern scorePattern, StatementPattern snippetPattern, StatementPattern typePattern, Resource subject, String queryString, IRI propertyURI)
QuerySpec(StatementPattern matchesPattern, StatementPattern queryPattern, StatementPattern propertyPattern, StatementPattern scorePattern, StatementPattern snippetPattern, StatementPattern typePattern, StatementPattern idPattern, Resource subject, String queryString, IRI propertyURI)

Method Summary

Modifier and Type	Method	Description
StatementPattern	getIdPattern()
StatementPattern	getMatchesPattern()
String	getMatchesVariableName()	return the name of the bound variable that should match the query
QueryModelNode	getParentQueryModelNode()
StatementPattern	getPropertyPattern()
IRI	getPropertyURI()
String	getPropertyVariableName()
StatementPattern	getQueryPattern()
String	getQueryString()	return the literal expression of the query or null, if none set.
IRI	getQueryType()	the type of query, must equal LuceneSailSchema.LUCENE_QUERY.
StatementPattern	getScorePattern()
String	getScoreVariableName()	The variable name associated with the query score
StatementPattern	getSnippetPattern()
String	getSnippetVariableName()
Resource	getSubject()
StatementPattern	getTypePattern()
boolean	isEvaluable()
QueryModelNode	removeQueryPatterns()	Removes the query patterns and returns a placeholder where the query results could be placed.
String	toString()

Methods inherited from class org.eclipse.rdf4j.sail.lucene.AbstractSearchQueryEvaluator

replaceQueryPatternsWithResults

Methods inherited from class java.lang.Object

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

Constructor Detail

QuerySpec

public QuerySpec(StatementPattern matchesPattern,
                 StatementPattern queryPattern,
                 StatementPattern propertyPattern,
                 StatementPattern scorePattern,
                 StatementPattern snippetPattern,
                 StatementPattern typePattern,
                 Resource subject,
                 String queryString,
                 IRI propertyURI)

QuerySpec

public QuerySpec(StatementPattern matchesPattern,
                 StatementPattern queryPattern,
                 StatementPattern propertyPattern,
                 StatementPattern scorePattern,
                 StatementPattern snippetPattern,
                 StatementPattern typePattern,
                 StatementPattern idPattern,
                 Resource subject,
                 String queryString,
                 IRI propertyURI)

QuerySpec

public QuerySpec(String matchesVarName,
                 String propertyVarName,
                 String scoreVarName,
                 String snippetVarName,
                 Resource subject,
                 String queryString,
                 IRI propertyURI)

Method Detail

getParentQueryModelNode

public QueryModelNode getParentQueryModelNode()

removeQueryPatterns

public QueryModelNode removeQueryPatterns()

Description copied from interface: SearchQueryEvaluator

Removes the query patterns and returns a placeholder where the query results could be placed.

getMatchesPattern

public StatementPattern getMatchesPattern()

getMatchesVariableName

public String getMatchesVariableName()

return the name of the bound variable that should match the query

Returns:

the name of the variable or null, if no name set

getQueryPattern

public StatementPattern getQueryPattern()

getPropertyPattern

public StatementPattern getPropertyPattern()

getIdPattern

public StatementPattern getIdPattern()

getPropertyVariableName

public String getPropertyVariableName()

getScorePattern

public StatementPattern getScorePattern()

getScoreVariableName

public String getScoreVariableName()

The variable name associated with the query score

Returns:

the name or null, if no score is queried in the pattern

getSnippetPattern

public StatementPattern getSnippetPattern()

getSnippetVariableName

public String getSnippetVariableName()

getTypePattern

public StatementPattern getTypePattern()

getQueryType

public IRI getQueryType()

the type of query, must equal LuceneSailSchema.LUCENE_QUERY. A null type is possible, but not valid.

Returns:

the type of the Query or null, if no type assigned.

getSubject

public Resource getSubject()

getQueryString

public String getQueryString()

return the literal expression of the query or null, if none set. (null values are possible, but not valid).

Returns:

the query or null

getPropertyURI

public IRI getPropertyURI()

Returns:

The URI of the property who's literal values should be searched, or null

isEvaluable

public boolean isEvaluable()

toString

public String toString()

Overrides:

toString in class Object