org.eaglei.search.provider.lucene.search
Class LuceneSearchQueryBuilder

java.lang.Object
  org.eaglei.search.provider.lucene.search.LuceneSearchQueryBuilder

All Implemented Interfaces:

LuceneIndexSchema, LuceneSearchIndexSchema

public final class LuceneSearchQueryBuilder
extends java.lang.Object
implements LuceneSearchIndexSchema

Contains logic for building a Lucene Query from a SearchRequest for the index schema defined by LuceneSearchIndexSchema. Creation of the query can potentially incorporate (neither of these are implemented):

• query-expansion: using an ontology-based entity extraction technique similar to what is done for PubMed
• pseudo-relevance feedback: the top-X results of an initial search are used to create a modified query

Author:

frost

Field Summary

Fields inherited from interface org.eaglei.search.provider.lucene.search.LuceneSearchIndexSchema

BOOST_ALT_LABEL, BOOST_ASSERTED_TYPE_LABEL, BOOST_ASSERTED_TYPE_URI, BOOST_DESCRIPTION, BOOST_ENTITY_LABEL, BOOST_INFERRED_TYPE_LABEL, BOOST_INFERRED_TYPE_URI, BOOST_PROP_TEXT, BOOST_PROP_URI, BOOST_SYNONYM, BOOST_URI, FIELD_ASSERTED_TYPE_LABEL, FIELD_ASSERTED_TYPE_URI, FIELD_DESCRIPTION, FIELD_INFERRED_TYPE_LABEL, FIELD_INFERRED_TYPE_URI, FIELD_PROP_TEXT, FIELD_PROP_URI, FIELD_PROVIDER_LABEL, FIELD_PROVIDER_TYPE_URI, FIELD_PROVIDER_URI, FIELD_REFERENCED_BY

Fields inherited from interface org.eaglei.search.provider.lucene.LuceneIndexSchema

FIELD_ENTITY_LABEL, FIELD_INSTITUTION_URI, FIELD_LABEL, FIELD_URI

Constructor Summary

LuceneSearchQueryBuilder(org.eaglei.model.EIOntModel eagleiOntModel, org.apache.lucene.analysis.Analyzer analyzer)
Creates a LuceneQueryBuilder.

Method Summary

org.apache.lucene.search.Query

createQuery(org.eaglei.search.provider.SearchRequest request) Creates a multi-field query from the SearchRequest.

Methods inherited from class java.lang.Object

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

Constructor Detail

LuceneSearchQueryBuilder

public LuceneSearchQueryBuilder(org.eaglei.model.EIOntModel eagleiOntModel,
                                org.apache.lucene.analysis.Analyzer analyzer)

Creates a LuceneQueryBuilder.

Parameters:

eagleiOntModel - Reference to the eagle-i ontology model.

analyzer - Analyzer to use for query execution.

Method Detail

createQuery

public org.apache.lucene.search.Query createQuery(org.eaglei.search.provider.SearchRequest request)
                                           throws org.apache.lucene.queryParser.ParseException

Creates a multi-field query from the SearchRequest.

Parameters:

request - The SearchRequest for which the Lucene Query is being created

Returns:

The Lucene query.

Throws:

org.apache.lucene.queryParser.ParseException