org.molgenis.data.semanticsearch.service.impl

Class SemanticSearchServiceHelper

java.lang.Object

org.molgenis.data.semanticsearch.service.impl.SemanticSearchServiceHelper

@Component
public class SemanticSearchServiceHelper
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static int	MAX_NUM_TAGS
static Set<String>	STOP_WORDS

Constructor Summary

Constructors

Constructor and Description
SemanticSearchServiceHelper(OntologyTagService ontologyTagService, DataService dataService, OntologyService ontologyService, TermFrequencyService termFrequencyService)

Method Summary

Modifier and Type	Method and Description
Map<String,String>	collectExpandedQueryMap(EntityMetaData targetEntityMetaData, AttributeMetaData targetAttribute) This function creates a map that contains the expanded query as key and original tag label as the value.
void	collectOntologyTermQueryMap(Map<String,String> expanedQueryMap, OntologyTerm ontologyTerm)
QueryRule	createDisMaxQueryRuleForAttribute(EntityMetaData targetEntityMetaData, AttributeMetaData targetAttribute) Create a disMaxJunc query rule based on the label and description from target attribute as well as the information from ontology term tags
QueryRule	createDisMaxQueryRuleForTerms(List<String> queryTerms) Create disMaxJunc query rule based a list of queryTerm.
QueryRule	createDisMaxQueryRuleForTermsWithBoost(List<String> queryTerms, Double boostValue) Create a disMaxQueryRule with corresponding boosted value
QueryRule	createShouldQueryRule(String multiOntologyTermIri) Create a boolean should query for composite tags containing multiple ontology terms
List<OntologyTerm>	findTags(String description, List<String> ontologyIds)
List<String>	getAttributeIdentifiers(EntityMetaData sourceEntityMetaData) A helper function that gets identifiers of all the attributes from one entityMetaData
Set<String>	getOtLabelAndSynonyms(OntologyTerm ontologyTerm) A helper function to collect synonyms as well as label of ontologyterm
String	parseBoostQueryString(String queryString, double boost)
List<String>	parseOntologyTermQueries(OntologyTerm ontologyTerm) Create a list of string queries based on the information collected from current ontologyterm including label, synonyms and child ontologyterms
String	parseQueryString(String queryString)
Set<String>	removeStopWords(String description)
String	reverseEscapeLuceneChar(String string)

Methods inherited from class java.lang.Object

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

Field Detail

STOP_WORDS

public static final Set<String> STOP_WORDS

MAX_NUM_TAGS

public static final int MAX_NUM_TAGS

See Also:

Constant Field Values

Constructor Detail

SemanticSearchServiceHelper

@Autowired
public SemanticSearchServiceHelper(OntologyTagService ontologyTagService,
                                              DataService dataService,
                                              OntologyService ontologyService,
                                              TermFrequencyService termFrequencyService)

Method Detail

createDisMaxQueryRuleForAttribute

public QueryRule createDisMaxQueryRuleForAttribute(EntityMetaData targetEntityMetaData,
                                                   AttributeMetaData targetAttribute)

Create a disMaxJunc query rule based on the label and description from target attribute as well as the information from ontology term tags

Parameters:

targetEntityMetaData -

targetAttribute -

Returns:

disMaxJunc queryRule

createDisMaxQueryRuleForTerms

public QueryRule createDisMaxQueryRuleForTerms(List<String> queryTerms)

Create disMaxJunc query rule based a list of queryTerm. All queryTerms are lower cased and stop words are removed

Parameters:

queryTerms -

Returns:

disMaxJunc queryRule

createDisMaxQueryRuleForTermsWithBoost

public QueryRule createDisMaxQueryRuleForTermsWithBoost(List<String> queryTerms,
                                                        Double boostValue)

Create a disMaxQueryRule with corresponding boosted value

Parameters:

queryTerms -

boostValue -

Returns:

a disMaxQueryRule with boosted value

createShouldQueryRule

public QueryRule createShouldQueryRule(String multiOntologyTermIri)

Create a boolean should query for composite tags containing multiple ontology terms

Parameters:

multiOntologyTermIri -

Returns:

return a boolean should queryRule

parseOntologyTermQueries

public List<String> parseOntologyTermQueries(OntologyTerm ontologyTerm)

Create a list of string queries based on the information collected from current ontologyterm including label, synonyms and child ontologyterms

Parameters:

ontologyTerm -

Returns:

getOtLabelAndSynonyms

public Set<String> getOtLabelAndSynonyms(OntologyTerm ontologyTerm)

A helper function to collect synonyms as well as label of ontologyterm

Parameters:

ontologyTerm -

Returns:

a list of synonyms plus label

collectExpandedQueryMap

public Map<String,String> collectExpandedQueryMap(EntityMetaData targetEntityMetaData,
                                                  AttributeMetaData targetAttribute)

This function creates a map that contains the expanded query as key and original tag label as the value. This map allows us to trace back which tags are used in matching

Parameters:

targetEntityMetaData -

targetAttribute -

Returns:

collectOntologyTermQueryMap

public void collectOntologyTermQueryMap(Map<String,String> expanedQueryMap,
                                        OntologyTerm ontologyTerm)

getAttributeIdentifiers

public List<String> getAttributeIdentifiers(EntityMetaData sourceEntityMetaData)

A helper function that gets identifiers of all the attributes from one entityMetaData

Parameters:

sourceEntityMetaData -

Returns:

findTags

public List<OntologyTerm> findTags(String description,
                                   List<String> ontologyIds)

parseQueryString

public String parseQueryString(String queryString)

parseBoostQueryString

public String parseBoostQueryString(String queryString,
                                    double boost)

reverseEscapeLuceneChar

public String reverseEscapeLuceneChar(String string)

removeStopWords

public Set<String> removeStopWords(String description)