er.neo4jadaptor.query.lucene

Class LuceneQueryConverter

java.lang.Object

er.neo4jadaptor.query.QueryConverter<org.apache.lucene.search.Query>

er.neo4jadaptor.query.lucene.LuceneQueryConverter

public class LuceneQueryConverter
extends QueryConverter<org.apache.lucene.search.Query>

Builds Lucene Query equal to, or more liberal than the given EOQualifier. Search results found using returned qualifier might therefore need additional filtering.

Author:

Jedrzej Sobanski

Constructor Summary

Constructors

Constructor and Description
LuceneQueryConverter()

Method Summary

Modifier and Type	Method and Description
protected org.apache.lucene.search.Query	comparison(EOEntity entity, String key, ComparisonOperator operator, Object value) Creates clause that matches records where the given entity key matches given value using comparison operator.
protected org.apache.lucene.search.Query	convertKeyValueQualifier(EOEntity entity, EOKeyValueQualifier qual)
org.apache.lucene.search.Query	fullQuery(EOEntity entity, EOQualifier qualifier)
boolean	isQueryFullyCovered()
protected org.apache.lucene.search.Query	joinWithAndOperator(Collection<org.apache.lucene.search.Query> queries)
protected org.apache.lucene.search.Query	joinWithOrOperator(Collection<org.apache.lucene.search.Query> queries)
protected org.apache.lucene.search.Query	matchAll()
static org.apache.lucene.search.Query	matchAllOfEntity(EOEntity entity)
protected org.apache.lucene.search.Query	negate(org.apache.lucene.search.Query query) Creates negation of the given clause.

Methods inherited from class er.neo4jadaptor.query.QueryConverter

convert

Methods inherited from class java.lang.Object

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

Constructor Detail

LuceneQueryConverter

public LuceneQueryConverter()

Method Detail

negate

protected org.apache.lucene.search.Query negate(org.apache.lucene.search.Query query)

Description copied from class: QueryConverter

Creates negation of the given clause.

Specified by:

negate in class QueryConverter<org.apache.lucene.search.Query>

Parameters:

query - clause to negate

Returns:

negated clause

joinWithAndOperator

protected org.apache.lucene.search.Query joinWithAndOperator(Collection<org.apache.lucene.search.Query> queries)

Specified by:

joinWithAndOperator in class QueryConverter<org.apache.lucene.search.Query>

Parameters:

queries - clauses to join with logical conjunction

Returns:

clause that would evaluate to true if all of queries evaluate to true

joinWithOrOperator

protected org.apache.lucene.search.Query joinWithOrOperator(Collection<org.apache.lucene.search.Query> queries)

Specified by:

joinWithOrOperator in class QueryConverter<org.apache.lucene.search.Query>

Parameters:

queries - clauses to join with logical alternative

Returns:

clause that would evaluate to true if at least one of queries evaluates to true

matchAll

protected org.apache.lucene.search.Query matchAll()

Specified by:

matchAll in class QueryConverter<org.apache.lucene.search.Query>

Returns:

clause that would match everyting

matchAllOfEntity

public static org.apache.lucene.search.Query matchAllOfEntity(EOEntity entity)

convertKeyValueQualifier

protected org.apache.lucene.search.Query convertKeyValueQualifier(EOEntity entity,
                                                                  EOKeyValueQualifier qual)

Overrides:

convertKeyValueQualifier in class QueryConverter<org.apache.lucene.search.Query>

comparison

protected org.apache.lucene.search.Query comparison(EOEntity entity,
                                                    String key,
                                                    ComparisonOperator operator,
                                                    Object value)

Description copied from class: QueryConverter

Creates clause that matches records where the given entity key matches given value using comparison operator.

Specified by:

comparison in class QueryConverter<org.apache.lucene.search.Query>

Returns:

a ClauseType object

fullQuery

public org.apache.lucene.search.Query fullQuery(EOEntity entity,
                                                EOQualifier qualifier)

Specified by:

fullQuery in class QueryConverter<org.apache.lucene.search.Query>

Returns:

search criteria equivalent to the given qualifier

isQueryFullyCovered

public boolean isQueryFullyCovered()