/
SearchResponderV2.scala
1138 lines (997 loc) · 47.4 KB
/
SearchResponderV2.scala
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/*
* Copyright © 2021 - 2022 Swiss National Data and Service Center for the Humanities and/or DaSCH Service Platform contributors.
* SPDX-License-Identifier: Apache-2.0
*/
package org.knora.webapi.responders.v2
import akka.http.scaladsl.util.FastFuture
import akka.pattern._
import scala.concurrent.Future
import scala.util.Failure
import scala.util.Success
import scala.util.Try
import dsp.errors.AssertionException
import dsp.errors.BadRequestException
import dsp.errors.GravsearchException
import dsp.errors.InconsistentRepositoryDataException
import org.knora.webapi._
import org.knora.webapi.messages.IriConversions._
import org.knora.webapi.messages.OntologyConstants
import org.knora.webapi.messages.SmartIri
import org.knora.webapi.messages.StringFormatter
import org.knora.webapi.messages.admin.responder.usersmessages.UserADM
import org.knora.webapi.messages.store.triplestoremessages._
import org.knora.webapi.messages.util.ConstructResponseUtilV2
import org.knora.webapi.messages.util.ConstructResponseUtilV2.MappingAndXSLTransformation
import org.knora.webapi.messages.util.ErrorHandlingMap
import org.knora.webapi.messages.util.ResponderData
import org.knora.webapi.messages.util.rdf.SparqlSelectResult
import org.knora.webapi.messages.util.rdf.SparqlSelectResultBody
import org.knora.webapi.messages.util.rdf.VariableResultsRow
import org.knora.webapi.messages.util.search._
import org.knora.webapi.messages.util.search.gravsearch.GravsearchQueryChecker
import org.knora.webapi.messages.util.search.gravsearch.prequery.AbstractPrequeryGenerator
import org.knora.webapi.messages.util.search.gravsearch.prequery.NonTriplestoreSpecificGravsearchToCountPrequeryTransformer
import org.knora.webapi.messages.util.search.gravsearch.prequery.NonTriplestoreSpecificGravsearchToPrequeryTransformer
import org.knora.webapi.messages.util.search.gravsearch.types._
import org.knora.webapi.messages.util.standoff.StandoffTagUtilV2
import org.knora.webapi.messages.v2.responder.KnoraJsonLDResponseV2
import org.knora.webapi.messages.v2.responder.ontologymessages.EntityInfoGetRequestV2
import org.knora.webapi.messages.v2.responder.ontologymessages.EntityInfoGetResponseV2
import org.knora.webapi.messages.v2.responder.ontologymessages.ReadClassInfoV2
import org.knora.webapi.messages.v2.responder.ontologymessages.ReadPropertyInfoV2
import org.knora.webapi.messages.v2.responder.resourcemessages._
import org.knora.webapi.messages.v2.responder.searchmessages._
import org.knora.webapi.responders.Responder.handleUnexpectedMessage
import org.knora.webapi.store.triplestore.errors.TriplestoreTimeoutException
import org.knora.webapi.util.ApacheLuceneSupport._
class SearchResponderV2(responderData: ResponderData) extends ResponderWithStandoffV2(responderData) {
// A Gravsearch type inspection runner.
private val gravsearchTypeInspectionRunner = new GravsearchTypeInspectionRunner(appActor, responderData)
/**
* Receives a message of type [[SearchResponderRequestV2]], and returns an appropriate response message.
*/
def receive(msg: SearchResponderRequestV2): Future[KnoraJsonLDResponseV2] = msg match {
case FullTextSearchCountRequestV2(
searchValue,
limitToProject,
limitToResourceClass,
limitToStandoffClass,
requestingUser
) =>
fulltextSearchCountV2(
searchValue,
limitToProject,
limitToResourceClass,
limitToStandoffClass,
requestingUser
)
case FulltextSearchRequestV2(
searchValue,
offset,
limitToProject,
limitToResourceClass,
limitToStandoffClass,
returnFiles,
targetSchema,
schemaOptions,
requestingUser
) =>
fulltextSearchV2(
searchValue,
offset,
limitToProject,
limitToResourceClass,
limitToStandoffClass,
returnFiles,
targetSchema,
schemaOptions,
requestingUser
)
case GravsearchCountRequestV2(query, requestingUser) =>
gravsearchCountV2(
inputQuery = query,
requestingUser = requestingUser
)
case GravsearchRequestV2(query, targetSchema, schemaOptions, requestingUser) =>
gravsearchV2(
inputQuery = query,
targetSchema = targetSchema,
schemaOptions = schemaOptions,
requestingUser = requestingUser
)
case SearchResourceByLabelCountRequestV2(
searchValue,
limitToProject,
limitToResourceClass,
requestingUser
) =>
searchResourcesByLabelCountV2(
searchValue,
limitToProject,
limitToResourceClass,
requestingUser
)
case SearchResourceByLabelRequestV2(
searchValue,
offset,
limitToProject,
limitToResourceClass,
targetSchema,
requestingUser
) =>
searchResourcesByLabelV2(
searchValue,
offset,
limitToProject,
limitToResourceClass,
targetSchema,
requestingUser
)
case resourcesInProjectGetRequestV2: SearchResourcesByProjectAndClassRequestV2 =>
searchResourcesByProjectAndClassV2(resourcesInProjectGetRequestV2)
case other => handleUnexpectedMessage(other, log, this.getClass.getName)
}
/**
* Performs a fulltext search and returns the resources count (how many resources match the search criteria),
* without taking into consideration permission checking.
*
* This method does not return the resources themselves.
*
* @param searchValue the values to search for.
* @param limitToProject limit search to given project.
* @param limitToResourceClass limit search to given resource class.
*
* @param requestingUser the the client making the request.
* @return a [[ResourceCountV2]] representing the number of resources that have been found.
*/
private def fulltextSearchCountV2(
searchValue: String,
limitToProject: Option[IRI],
limitToResourceClass: Option[SmartIri],
limitToStandoffClass: Option[SmartIri],
requestingUser: UserADM
): Future[ResourceCountV2] = {
val searchTerms: LuceneQueryString = LuceneQueryString(searchValue)
for {
countSparql <-
Future(
org.knora.webapi.messages.twirl.queries.sparql.v2.txt
.searchFulltext(
searchTerms = searchTerms,
limitToProject = limitToProject,
limitToResourceClass = limitToResourceClass.map(_.toString),
limitToStandoffClass = limitToStandoffClass.map(_.toString),
returnFiles = false, // not relevant for a count query
separator = None, // no separator needed for count query
limit = 1,
offset = 0,
countQuery = true // do not get the resources themselves, but the sum of results
)
.toString()
)
countResponse: SparqlSelectResult <- appActor.ask(SparqlSelectRequest(countSparql)).mapTo[SparqlSelectResult]
// query response should contain one result with one row with the name "count"
_ = if (countResponse.results.bindings.length != 1) {
throw GravsearchException(
s"Fulltext count query is expected to return exactly one row, but ${countResponse.results.bindings.size} given"
)
}
count = countResponse.results.bindings.head.rowMap("count")
} yield ResourceCountV2(numberOfResources = count.toInt)
}
/**
* Performs a fulltext search (simple search).
*
* @param searchValue the values to search for.
* @param offset the offset to be used for paging.
* @param limitToProject limit search to given project.
* @param limitToResourceClass limit search to given resource class.
* @param returnFiles if true, return any file value attached to each matching resource.
* @param targetSchema the target API schema.
* @param schemaOptions the schema options submitted with the request.
*
* @param requestingUser the the client making the request.
* @return a [[ReadResourcesSequenceV2]] representing the resources that have been found.
*/
private def fulltextSearchV2(
searchValue: String,
offset: Int,
limitToProject: Option[IRI],
limitToResourceClass: Option[SmartIri],
limitToStandoffClass: Option[SmartIri],
returnFiles: Boolean,
targetSchema: ApiV2Schema,
schemaOptions: Set[SchemaOption],
requestingUser: UserADM
): Future[ReadResourcesSequenceV2] = {
import org.knora.webapi.messages.util.search.FullTextMainQueryGenerator.FullTextSearchConstants
val groupConcatSeparator = StringFormatter.INFORMATION_SEPARATOR_ONE
val searchTerms: LuceneQueryString = LuceneQueryString(searchValue)
for {
searchSparql <-
Future(
org.knora.webapi.messages.twirl.queries.sparql.v2.txt
.searchFulltext(
searchTerms = searchTerms,
limitToProject = limitToProject,
limitToResourceClass = limitToResourceClass.map(_.toString),
limitToStandoffClass = limitToStandoffClass.map(_.toString),
returnFiles = returnFiles,
separator = Some(groupConcatSeparator),
limit = settings.v2ResultsPerPage,
offset = offset * settings.v2ResultsPerPage, // determine the actual offset
countQuery = false
)
.toString()
)
prequeryResponseNotMerged: SparqlSelectResult <- appActor
.ask(SparqlSelectRequest(searchSparql))
.mapTo[SparqlSelectResult]
mainResourceVar = QueryVariable("resource")
// Merge rows with the same resource IRI.
prequeryResponse = mergePrequeryResults(prequeryResponseNotMerged, mainResourceVar)
// a sequence of resource IRIs that match the search criteria
// attention: no permission checking has been done so far
resourceIris: Seq[IRI] = prequeryResponse.results.bindings.map { resultRow: VariableResultsRow =>
resultRow.rowMap(FullTextSearchConstants.resourceVar.variableName)
}
// If the prequery returned some results, prepare a main query.
mainResourcesAndValueRdfData: ConstructResponseUtilV2.MainResourcesAndValueRdfData <-
if (resourceIris.nonEmpty) {
// for each resource, create a Set of value object IRIs
val valueObjectIrisPerResource: Map[IRI, Set[IRI]] =
prequeryResponse.results.bindings.foldLeft(Map.empty[IRI, Set[IRI]]) {
(acc: Map[IRI, Set[IRI]], resultRow: VariableResultsRow) =>
val mainResIri: IRI = resultRow.rowMap(FullTextSearchConstants.resourceVar.variableName)
resultRow.rowMap.get(FullTextSearchConstants.valueObjectConcatVar.variableName) match {
case Some(valObjIris) =>
// Filter out empty IRIs (which we could get if a variable used in GROUP_CONCAT is unbound)
acc + (mainResIri -> valObjIris.split(groupConcatSeparator).toSet.filterNot(_.isEmpty))
case None => acc
}
}
// collect all value object IRIs
val allValueObjectIris = valueObjectIrisPerResource.values.flatten.toSet
// create a CONSTRUCT query to query resources and their values
val mainQuery = FullTextMainQueryGenerator.createMainQuery(
resourceIris = resourceIris.toSet,
valueObjectIris = allValueObjectIris,
targetSchema = targetSchema,
schemaOptions = schemaOptions,
settings = settings
)
val queryPatternTransformerConstruct: ConstructToConstructTransformer =
new SparqlTransformer.NoInferenceConstructToConstructTransformer
val triplestoreSpecificQuery = QueryTraverser.transformConstructToConstruct(
inputQuery = mainQuery,
transformer = queryPatternTransformerConstruct
)
for {
searchResponse: SparqlExtendedConstructResponse <-
appActor
.ask(
SparqlExtendedConstructRequest(
sparql = triplestoreSpecificQuery.toSparql
)
)
.mapTo[SparqlExtendedConstructResponse]
// separate resources and value objects
queryResultsSep: ConstructResponseUtilV2.MainResourcesAndValueRdfData =
ConstructResponseUtilV2
.splitMainResourcesAndValueRdfData(
constructQueryResults = searchResponse,
requestingUser = requestingUser
)
} yield queryResultsSep
} else {
// the prequery returned no results, no further query is necessary
Future(
ConstructResponseUtilV2.MainResourcesAndValueRdfData(resources = Map.empty)
)
}
// Find out whether to query standoff along with text values. This boolean value will be passed to
// ConstructResponseUtilV2.makeTextValueContentV2.
queryStandoff: Boolean = SchemaOptions.queryStandoffWithTextValues(
targetSchema = targetSchema,
schemaOptions = schemaOptions
)
// If we're querying standoff, get XML-to standoff mappings.
mappingsAsMap: Map[IRI, MappingAndXSLTransformation] <-
if (queryStandoff) {
getMappingsFromQueryResultsSeparated(
queryResultsSeparated = mainResourcesAndValueRdfData.resources,
requestingUser = requestingUser
)
} else {
FastFuture.successful(Map.empty[IRI, MappingAndXSLTransformation])
}
apiResponse: ReadResourcesSequenceV2 <-
ConstructResponseUtilV2.createApiResponse(
mainResourcesAndValueRdfData = mainResourcesAndValueRdfData,
orderByResourceIri = resourceIris,
pageSizeBeforeFiltering = resourceIris.size,
mappings = mappingsAsMap,
queryStandoff = queryStandoff,
calculateMayHaveMoreResults = true,
versionDate = None,
appActor = appActor,
settings = settings,
targetSchema = targetSchema,
requestingUser = requestingUser
)
} yield apiResponse
}
/**
* Performs a count query for a Gravsearch query provided by the user.
*
* @param inputQuery a Gravsearch query provided by the client.
*
* @param requestingUser the the client making the request.
* @return a [[ResourceCountV2]] representing the number of resources that have been found.
*/
private def gravsearchCountV2(
inputQuery: ConstructQuery,
requestingUser: UserADM
): Future[ResourceCountV2] = {
// make sure that OFFSET is 0
if (inputQuery.offset != 0)
throw GravsearchException(s"OFFSET must be 0 for a count query, but ${inputQuery.offset} given")
for {
// Do type inspection and remove type annotations from the WHERE clause.
typeInspectionResult: GravsearchTypeInspectionResult <-
gravsearchTypeInspectionRunner.inspectTypes(
inputQuery.whereClause,
requestingUser
)
whereClauseWithoutAnnotations: WhereClause =
GravsearchTypeInspectionUtil.removeTypeAnnotations(
inputQuery.whereClause
)
// Validate schemas and predicates in the CONSTRUCT clause.
_ = GravsearchQueryChecker.checkConstructClause(
constructClause = inputQuery.constructClause,
typeInspectionResult = typeInspectionResult
)
// Create a Select prequery
nonTriplestoreSpecificConstructToSelectTransformer: NonTriplestoreSpecificGravsearchToCountPrequeryTransformer =
new NonTriplestoreSpecificGravsearchToCountPrequeryTransformer(
constructClause = inputQuery.constructClause,
typeInspectionResult = typeInspectionResult,
querySchema = inputQuery.querySchema.getOrElse(throw AssertionException(s"WhereClause has no querySchema"))
)
nonTriplestoreSpecificPrequery: SelectQuery =
QueryTraverser.transformConstructToSelect(
inputQuery = inputQuery.copy(
whereClause = whereClauseWithoutAnnotations,
orderBy = Seq.empty[
OrderCriterion
] // count queries do not need any sorting criteria
),
transformer = nonTriplestoreSpecificConstructToSelectTransformer
)
// Convert the non-triplestore-specific query to a triplestore-specific one.
triplestoreSpecificQueryPatternTransformerSelect: SelectToSelectTransformer =
new SparqlTransformer.NoInferenceSelectToSelectTransformer(
simulateInference = nonTriplestoreSpecificConstructToSelectTransformer.useInference
)
ontologiesForInferenceMaybe <-
QueryTraverser.getOntologiesRelevantForInference(
inputQuery.whereClause,
appActor
)
triplestoreSpecificCountQuery =
QueryTraverser.transformSelectToSelect(
inputQuery = nonTriplestoreSpecificPrequery,
transformer = triplestoreSpecificQueryPatternTransformerSelect,
ontologiesForInferenceMaybe
)
countResponse: SparqlSelectResult <-
appActor
.ask(SparqlSelectRequest(triplestoreSpecificCountQuery.toSparql, isGravsearch = true))
.mapTo[SparqlSelectResult]
// query response should contain one result with one row with the name "count"
_ = if (countResponse.results.bindings.length != 1) {
throw GravsearchException(
s"Count query is expected to return exactly one row, but ${countResponse.results.bindings.size} given"
)
}
count: String = countResponse.results.bindings.head.rowMap("count")
} yield ResourceCountV2(numberOfResources = count.toInt)
}
/**
* Performs a search using a Gravsearch query provided by the client.
*
* @param inputQuery a Gravsearch query provided by the client.
* @param targetSchema the target API schema.
* @param schemaOptions the schema options submitted with the request.
*
* @param requestingUser the the client making the request.
* @return a [[ReadResourcesSequenceV2]] representing the resources that have been found.
*/
private def gravsearchV2(
inputQuery: ConstructQuery,
targetSchema: ApiV2Schema,
schemaOptions: Set[SchemaOption],
requestingUser: UserADM
): Future[ReadResourcesSequenceV2] = {
import org.knora.webapi.messages.util.search.gravsearch.mainquery.GravsearchMainQueryGenerator
for {
// Do type inspection and remove type annotations from the WHERE clause.
typeInspectionResult: GravsearchTypeInspectionResult <-
gravsearchTypeInspectionRunner.inspectTypes(
inputQuery.whereClause,
requestingUser
)
whereClauseWithoutAnnotations: WhereClause =
GravsearchTypeInspectionUtil.removeTypeAnnotations(
inputQuery.whereClause
)
// Validate schemas and predicates in the CONSTRUCT clause.
_ = GravsearchQueryChecker.checkConstructClause(
constructClause = inputQuery.constructClause,
typeInspectionResult = typeInspectionResult
)
// Create a Select prequery
nonTriplestoreSpecificConstructToSelectTransformer: NonTriplestoreSpecificGravsearchToPrequeryTransformer =
new NonTriplestoreSpecificGravsearchToPrequeryTransformer(
constructClause = inputQuery.constructClause,
typeInspectionResult = typeInspectionResult,
querySchema = inputQuery.querySchema.getOrElse(throw AssertionException(s"WhereClause has no querySchema")),
settings = settings
)
// TODO: if the ORDER BY criterion is a property whose occurrence is not 1, then the logic does not work correctly
// TODO: the ORDER BY criterion has to be included in a GROUP BY statement, returning more than one row if property occurs more than once
ontologiesForInferenceMaybe <-
QueryTraverser.getOntologiesRelevantForInference(
inputQuery.whereClause,
appActor
)
nonTriplestoreSpecificPrequery: SelectQuery =
QueryTraverser.transformConstructToSelect(
inputQuery = inputQuery.copy(whereClause = whereClauseWithoutAnnotations),
transformer = nonTriplestoreSpecificConstructToSelectTransformer
)
// variable representing the main resources
mainResourceVar: QueryVariable = nonTriplestoreSpecificConstructToSelectTransformer.mainResourceVariable
// Convert the non-triplestore-specific query to a triplestore-specific one.
triplestoreSpecificQueryPatternTransformerSelect: SelectToSelectTransformer =
new SparqlTransformer.NoInferenceSelectToSelectTransformer(
simulateInference = nonTriplestoreSpecificConstructToSelectTransformer.useInference
)
// Convert the preprocessed query to a non-triplestore-specific query.
triplestoreSpecificPrequery =
QueryTraverser.transformSelectToSelect(
inputQuery = nonTriplestoreSpecificPrequery,
transformer = triplestoreSpecificQueryPatternTransformerSelect,
limitInferenceToOntologies = ontologiesForInferenceMaybe
)
triplestoreSpecificPrequerySparql = triplestoreSpecificPrequery.toSparql
_ = log.debug(triplestoreSpecificPrequerySparql)
start = System.currentTimeMillis()
tryPrequeryResponseNotMerged =
Try(appActor.ask(SparqlSelectRequest(triplestoreSpecificPrequerySparql, isGravsearch = true)))
prequeryResponseNotMerged <-
(tryPrequeryResponseNotMerged match {
case Failure(exception) => {
exception match {
case _: TriplestoreTimeoutException =>
log.error(s"Gravsearch timed out for query: $inputQuery")
}
throw exception
}
case Success(value) => value
}).mapTo[SparqlSelectResult]
duration = (System.currentTimeMillis() - start) / 1000.0
_ =
if (duration < 3) {
log.debug(s"Prequery took: ${duration}s")
} else {
log.warn(s"Slow Prequery ($duration):\n$triplestoreSpecificPrequerySparql\nInitial Query:\n$inputQuery")
}
pageSizeBeforeFiltering: Int = prequeryResponseNotMerged.results.bindings.size
// Merge rows with the same main resource IRI. This could happen if there are unbound variables in a UNION.
prequeryResponse =
mergePrequeryResults(
prequeryResponseNotMerged = prequeryResponseNotMerged,
mainResourceVar = mainResourceVar
)
// a sequence of resource IRIs that match the search criteria
// attention: no permission checking has been done so far
mainResourceIris: Seq[IRI] =
prequeryResponse.results.bindings.map { resultRow: VariableResultsRow =>
resultRow.rowMap(mainResourceVar.variableName)
}
mainQueryResults: ConstructResponseUtilV2.MainResourcesAndValueRdfData <-
if (mainResourceIris.nonEmpty) {
// at least one resource matched the prequery
// get all the IRIs for variables representing dependent resources per main resource
val dependentResourceIrisPerMainResource: GravsearchMainQueryGenerator.DependentResourcesPerMainResource =
GravsearchMainQueryGenerator.getDependentResourceIrisPerMainResource(
prequeryResponse = prequeryResponse,
transformer = nonTriplestoreSpecificConstructToSelectTransformer,
mainResourceVar = mainResourceVar
)
// collect all variables representing resources
val allResourceVariablesFromTypeInspection: Set[QueryVariable] = typeInspectionResult.entities.collect {
case (queryVar: TypeableVariable, nonPropTypeInfo: NonPropertyTypeInfo) if nonPropTypeInfo.isResourceType =>
QueryVariable(queryVar.variableName)
}.toSet
// the user may have defined IRIs of dependent resources in the input query (type annotations)
// only add them if they are mentioned in a positive context (not negated like in a FILTER NOT EXISTS or MINUS)
val dependentResourceIrisFromTypeInspection: Set[IRI] = typeInspectionResult.entities.collect {
case (iri: TypeableIri, _: NonPropertyTypeInfo)
if whereClauseWithoutAnnotations.positiveEntities.contains(IriRef(iri.iri)) =>
iri.iri.toString
}.toSet
// the IRIs of all dependent resources for all main resources
val allDependentResourceIris: Set[IRI] =
dependentResourceIrisPerMainResource.dependentResourcesPerMainResource.values.flatten.toSet ++ dependentResourceIrisFromTypeInspection
// for each main resource, create a Map of value object variables and their Iris
val valueObjectVarsAndIrisPerMainResource
: GravsearchMainQueryGenerator.ValueObjectVariablesAndValueObjectIris =
GravsearchMainQueryGenerator.getValueObjectVarsAndIrisPerMainResource(
prequeryResponse = prequeryResponse,
transformer = nonTriplestoreSpecificConstructToSelectTransformer,
mainResourceVar = mainResourceVar
)
// collect all value objects IRIs (for all main resources and for all value object variables)
val allValueObjectIris: Set[IRI] =
valueObjectVarsAndIrisPerMainResource.valueObjectVariablesAndValueObjectIris.values.foldLeft(
Set.empty[IRI]
) { case (acc: Set[IRI], valObjIrisForQueryVar: Map[QueryVariable, Set[IRI]]) =>
acc ++ valObjIrisForQueryVar.values.flatten.toSet
}
// create the main query
// it is a Union of two sets: the main resources and the dependent resources
val mainQuery: ConstructQuery = GravsearchMainQueryGenerator.createMainQuery(
mainResourceIris = mainResourceIris.map(iri => IriRef(iri.toSmartIri)).toSet,
dependentResourceIris = allDependentResourceIris.map(iri => IriRef(iri.toSmartIri)),
valueObjectIris = allValueObjectIris,
targetSchema = targetSchema,
schemaOptions = schemaOptions,
settings = settings
)
val queryPatternTransformerConstruct: ConstructToConstructTransformer =
new SparqlTransformer.NoInferenceConstructToConstructTransformer
val triplestoreSpecificMainQuery = QueryTraverser.transformConstructToConstruct(
inputQuery = mainQuery,
transformer = queryPatternTransformerConstruct,
limitInferenceToOntologies = ontologiesForInferenceMaybe
)
// Convert the result to a SPARQL string and send it to the triplestore.
val triplestoreSpecificMainQuerySparql: String = triplestoreSpecificMainQuery.toSparql
log.debug(triplestoreSpecificMainQuerySparql)
for {
mainQueryResponse: SparqlExtendedConstructResponse <-
appActor
.ask(
SparqlExtendedConstructRequest(
sparql = triplestoreSpecificMainQuerySparql,
isGravsearch = true
)
)
.mapTo[SparqlExtendedConstructResponse]
// Filter out values that the user doesn't have permission to see.
queryResultsFilteredForPermissions: ConstructResponseUtilV2.MainResourcesAndValueRdfData =
ConstructResponseUtilV2
.splitMainResourcesAndValueRdfData(
constructQueryResults = mainQueryResponse,
requestingUser = requestingUser
)
// filter out those value objects that the user does not want to be returned by the query (not present in the input query's CONSTRUCT clause)
queryResWithFullGraphPatternOnlyRequestedValues: Map[
IRI,
ConstructResponseUtilV2.ResourceWithValueRdfData
] = MainQueryResultProcessor
.getRequestedValuesFromResultsWithFullGraphPattern(
queryResultsFilteredForPermissions.resources,
valueObjectVarsAndIrisPerMainResource,
allResourceVariablesFromTypeInspection,
dependentResourceIrisFromTypeInspection,
nonTriplestoreSpecificConstructToSelectTransformer,
typeInspectionResult,
inputQuery
)
} yield queryResultsFilteredForPermissions.copy(
resources = queryResWithFullGraphPatternOnlyRequestedValues
)
} else {
// the prequery returned no results, no further query is necessary
Future(ConstructResponseUtilV2.MainResourcesAndValueRdfData(resources = Map.empty))
}
// Find out whether to query standoff along with text values. This boolean value will be passed to
// ConstructResponseUtilV2.makeTextValueContentV2.
queryStandoff: Boolean = SchemaOptions.queryStandoffWithTextValues(
targetSchema = targetSchema,
schemaOptions = schemaOptions
)
// If we're querying standoff, get XML-to standoff mappings.
mappingsAsMap: Map[IRI, MappingAndXSLTransformation] <-
if (queryStandoff) {
getMappingsFromQueryResultsSeparated(
queryResultsSeparated = mainQueryResults.resources,
requestingUser = requestingUser
)
} else {
FastFuture.successful(Map.empty[IRI, MappingAndXSLTransformation])
}
apiResponse: ReadResourcesSequenceV2 <-
ConstructResponseUtilV2.createApiResponse(
mainResourcesAndValueRdfData = mainQueryResults,
orderByResourceIri = mainResourceIris,
pageSizeBeforeFiltering = pageSizeBeforeFiltering,
mappings = mappingsAsMap,
queryStandoff = queryStandoff,
versionDate = None,
calculateMayHaveMoreResults = true,
appActor = appActor,
settings = settings,
targetSchema = targetSchema,
requestingUser = requestingUser
)
} yield apiResponse
}
/**
* Gets resources from a project.
*
* @param resourcesInProjectGetRequestV2 the request message.
* @return a [[ReadResourcesSequenceV2]].
*/
private def searchResourcesByProjectAndClassV2(
resourcesInProjectGetRequestV2: SearchResourcesByProjectAndClassRequestV2
): Future[ReadResourcesSequenceV2] = {
val internalClassIri = resourcesInProjectGetRequestV2.resourceClass.toOntologySchema(InternalSchema)
val maybeInternalOrderByPropertyIri: Option[SmartIri] =
resourcesInProjectGetRequestV2.orderByProperty.map(_.toOntologySchema(InternalSchema))
for {
// Get information about the resource class, and about the ORDER BY property if specified.
entityInfoResponse: EntityInfoGetResponseV2 <-
appActor
.ask(
EntityInfoGetRequestV2(
classIris = Set(internalClassIri),
propertyIris = maybeInternalOrderByPropertyIri.toSet,
requestingUser = resourcesInProjectGetRequestV2.requestingUser
)
)
.mapTo[EntityInfoGetResponseV2]
classDef: ReadClassInfoV2 = entityInfoResponse.classInfoMap(internalClassIri)
// If an ORDER BY property was specified, determine which subproperty of knora-base:valueHas to use to get the
// literal value to sort by.
maybeOrderByValuePredicate: Option[SmartIri] =
maybeInternalOrderByPropertyIri match {
case Some(internalOrderByPropertyIri) =>
val internalOrderByPropertyDef: ReadPropertyInfoV2 =
entityInfoResponse.propertyInfoMap(
internalOrderByPropertyIri
)
// Ensure that the ORDER BY property is one that we can sort by.
if (
!internalOrderByPropertyDef.isResourceProp || internalOrderByPropertyDef.isLinkProp || internalOrderByPropertyDef.isLinkValueProp || internalOrderByPropertyDef.isFileValueProp
) {
throw BadRequestException(
s"Cannot sort by property <${resourcesInProjectGetRequestV2.orderByProperty}>"
)
}
// Ensure that the resource class has a cardinality on the ORDER BY property.
if (
!classDef.knoraResourceProperties.contains(
internalOrderByPropertyIri
)
) {
throw BadRequestException(
s"Class <${resourcesInProjectGetRequestV2.resourceClass}> has no cardinality on property <${resourcesInProjectGetRequestV2.orderByProperty}>"
)
}
// Get the value class that's the object of the knora-base:objectClassConstraint of the ORDER BY property.
val orderByValueType: SmartIri =
internalOrderByPropertyDef.entityInfoContent
.requireIriObject(
OntologyConstants.KnoraBase.ObjectClassConstraint.toSmartIri,
throw InconsistentRepositoryDataException(
s"Property <$internalOrderByPropertyIri> has no knora-base:objectClassConstraint"
)
)
// Determine which subproperty of knora-base:valueHas corresponds to that value class.
val orderByValuePredicate = orderByValueType.toString match {
case OntologyConstants.KnoraBase.IntValue =>
OntologyConstants.KnoraBase.ValueHasInteger
case OntologyConstants.KnoraBase.DecimalValue =>
OntologyConstants.KnoraBase.ValueHasDecimal
case OntologyConstants.KnoraBase.BooleanValue =>
OntologyConstants.KnoraBase.ValueHasBoolean
case OntologyConstants.KnoraBase.DateValue =>
OntologyConstants.KnoraBase.ValueHasStartJDN
case OntologyConstants.KnoraBase.ColorValue =>
OntologyConstants.KnoraBase.ValueHasColor
case OntologyConstants.KnoraBase.GeonameValue =>
OntologyConstants.KnoraBase.ValueHasGeonameCode
case OntologyConstants.KnoraBase.IntervalValue =>
OntologyConstants.KnoraBase.ValueHasIntervalStart
case OntologyConstants.KnoraBase.UriValue =>
OntologyConstants.KnoraBase.ValueHasUri
case _ => OntologyConstants.KnoraBase.ValueHasString
}
Some(orderByValuePredicate.toSmartIri)
case None => None
}
// Do a SELECT prequery to get the IRIs of the requested page of resources.
prequery = org.knora.webapi.messages.twirl.queries.sparql.v2.txt
.getResourcesByClassInProjectPrequery(
projectIri = resourcesInProjectGetRequestV2.projectIri.toString,
resourceClassIri = internalClassIri,
maybeOrderByProperty = maybeInternalOrderByPropertyIri,
maybeOrderByValuePredicate = maybeOrderByValuePredicate,
limit = settings.v2ResultsPerPage,
offset = resourcesInProjectGetRequestV2.page * settings.v2ResultsPerPage
)
.toString
sparqlSelectResponse <- appActor.ask(SparqlSelectRequest(prequery)).mapTo[SparqlSelectResult]
mainResourceIris: Seq[IRI] = sparqlSelectResponse.results.bindings.map(_.rowMap("resource"))
// Find out whether to query standoff along with text values. This boolean value will be passed to
// ConstructResponseUtilV2.makeTextValueContentV2.
queryStandoff: Boolean = SchemaOptions.queryStandoffWithTextValues(
targetSchema = ApiV2Complex,
schemaOptions = resourcesInProjectGetRequestV2.schemaOptions
)
// If we're supposed to query standoff, get the indexes delimiting the first page of standoff. (Subsequent
// pages, if any, will be queried separately.)
(maybeStandoffMinStartIndex: Option[Int], maybeStandoffMaxStartIndex: Option[Int]) =
StandoffTagUtilV2
.getStandoffMinAndMaxStartIndexesForTextValueQuery(
queryStandoff = queryStandoff,
settings = settings
)
// Are there any matching resources?
apiResponse: ReadResourcesSequenceV2 <-
if (mainResourceIris.nonEmpty) {
for {
// Yes. Do a CONSTRUCT query to get the contents of those resources. If we're querying standoff, get
// at most one page of standoff per text value.
resourceRequestSparql <-
Future(
org.knora.webapi.messages.twirl.queries.sparql.v2.txt
.getResourcePropertiesAndValues(
resourceIris = mainResourceIris,
preview = false,
withDeleted = false,
queryAllNonStandoff = true,
maybePropertyIri = None,
maybeVersionDate = None,
maybeStandoffMinStartIndex = maybeStandoffMinStartIndex,
maybeStandoffMaxStartIndex = maybeStandoffMaxStartIndex,
stringFormatter = stringFormatter
)
.toString()
)
resourceRequestResponse: SparqlExtendedConstructResponse <-
appActor
.ask(
SparqlExtendedConstructRequest(
sparql = resourceRequestSparql
)
)
.mapTo[SparqlExtendedConstructResponse]
// separate resources and values
mainResourcesAndValueRdfData: ConstructResponseUtilV2.MainResourcesAndValueRdfData =
ConstructResponseUtilV2
.splitMainResourcesAndValueRdfData(
constructQueryResults = resourceRequestResponse,
requestingUser = resourcesInProjectGetRequestV2.requestingUser
)
// If we're querying standoff, get XML-to standoff mappings.
mappings: Map[IRI, MappingAndXSLTransformation] <-
if (queryStandoff) {
getMappingsFromQueryResultsSeparated(
mainResourcesAndValueRdfData.resources,
resourcesInProjectGetRequestV2.requestingUser
)
} else {
FastFuture.successful(Map.empty[IRI, MappingAndXSLTransformation])
}
// Construct a ReadResourceV2 for each resource that the user has permission to see.
readResourcesSequence: ReadResourcesSequenceV2 <-
ConstructResponseUtilV2.createApiResponse(
mainResourcesAndValueRdfData = mainResourcesAndValueRdfData,
orderByResourceIri = mainResourceIris,
pageSizeBeforeFiltering = mainResourceIris.size,
mappings = mappings,
queryStandoff = maybeStandoffMinStartIndex.nonEmpty,
versionDate = None,
calculateMayHaveMoreResults = true,
appActor = appActor,
targetSchema = resourcesInProjectGetRequestV2.targetSchema,
settings = settings,
requestingUser = resourcesInProjectGetRequestV2.requestingUser
)
} yield readResourcesSequence
} else {
FastFuture.successful(ReadResourcesSequenceV2(Vector.empty[ReadResourceV2]))
}
} yield apiResponse
}
/**
* Performs a count query for a search for resources by their rdfs:label.
*
* @param searchValue the values to search for.
* @param limitToProject limit search to given project.
* @param limitToResourceClass limit search to given resource class.
*
* @param requestingUser the the client making the request.
* @return a [[ReadResourcesSequenceV2]] representing the resources that have been found.
*/
private def searchResourcesByLabelCountV2(
searchValue: String,
limitToProject: Option[IRI],
limitToResourceClass: Option[SmartIri],
requestingUser: UserADM
): Future[ResourceCountV2] = {
val searchPhrase: MatchStringWhileTyping = MatchStringWhileTyping(searchValue)
for {
countSparql <-
Future(
org.knora.webapi.messages.twirl.queries.sparql.v2.txt
.searchResourceByLabel(
searchTerm = searchPhrase,
limitToProject = limitToProject,
limitToResourceClass = limitToResourceClass.map(_.toString),
limit = 1,
offset = 0,
countQuery = true
)
.toString()
)
countResponse: SparqlSelectResult <- appActor.ask(SparqlSelectRequest(countSparql)).mapTo[SparqlSelectResult]
// query response should contain one result with one row with the name "count"
_ = if (countResponse.results.bindings.length != 1) {
throw GravsearchException(
s"Fulltext count query is expected to return exactly one row, but ${countResponse.results.bindings.size} given"
)
}
count = countResponse.results.bindings.head.rowMap("count")
} yield ResourceCountV2(
numberOfResources = count.toInt
)
}
/**
* Performs a search for resources by their rdfs:label.
*
* @param searchValue the values to search for.
* @param offset the offset to be used for paging.
* @param limitToProject limit search to given project.
* @param limitToResourceClass limit search to given resource class.
* @param targetSchema the schema of the response.
*
* @param requestingUser the the client making the request.
* @return a [[ReadResourcesSequenceV2]] representing the resources that have been found.
*/
private def searchResourcesByLabelV2(
searchValue: String,
offset: Int,
limitToProject: Option[IRI],
limitToResourceClass: Option[SmartIri],
targetSchema: ApiV2Schema,
requestingUser: UserADM
): Future[ReadResourcesSequenceV2] = {