Package com.complexible.stardog.plan.eval.service

Class LogicalServiceQuery

java.lang.Object

com.complexible.stardog.plan.eval.service.ServiceQuery

com.complexible.stardog.plan.eval.service.PlanNodeBodyServiceQuery

com.complexible.stardog.plan.eval.service.LogicalServiceQuery

public class LogicalServiceQuery
extends PlanNodeBodyServiceQuery

Service query which represents a logical service query to be used in the early stages of rewriting and optimization. Can be converted to a physical query when rewriting is complete.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	LogicalServiceQuery.LogicalServiceQueryBuilder

Nested classes/interfaces inherited from class com.complexible.stardog.plan.eval.service.PlanNodeBodyServiceQuery

PlanNodeBodyServiceQuery.CanonicalizedPlanNodeBodyServiceQuery, PlanNodeBodyServiceQuery.CanonicalizedPlanNodeBodyServiceQueryBuilder, PlanNodeBodyServiceQuery.PlanNodeBodyServiceQueryBuilder

Nested classes/interfaces inherited from class com.complexible.stardog.plan.eval.service.ServiceQuery

ServiceQuery.DistinctValuesEstimationFunction, ServiceQuery.ServiceQueryBuilder

Field Summary

Fields

Modifier and Type	Field	Description
protected Service	mService

Fields inherited from class com.complexible.stardog.plan.eval.service.ServiceQuery

mCardinality, mOptions

Constructor Summary

Constructors

Constructor	Description
LogicalServiceQuery(Service theService, IRI theServiceIri, com.complexible.stardog.plan.PlanNode theBody)

Method Summary

Modifier and Type	Method	Description
boolean	customTermReplacement()
com.complexible.stardog.plan.eval.operator.SolutionIterator	evaluate(com.complexible.stardog.plan.eval.ExecutionContext theContext, com.complexible.stardog.plan.eval.operator.Operator theArg, com.complexible.stardog.plan.PlanVarInfo theVarInfo)	Evaluate the query
boolean	isClosed()	Is the service query "closed"? or can we still use it?
LogicalServiceQuery	replaceBody(com.complexible.stardog.plan.PlanNode newBody)
com.complexible.stardog.plan.PlanNode	replaceBodyTerms(com.complexible.stardog.plan.util.PlanNodeVarReplacer termReplacer, com.complexible.stardog.plan.ServicePlanNode node)	The default implementation of query term replacement in a service body represented as a plan node
boolean	supportsConstantReplacement()
PlanNodeBodyServiceQuery.PlanNodeBodyServiceQueryBuilder	toBuilder()
com.complexible.stardog.plan.PlanNode	toPhysicalQuery(com.complexible.stardog.plan.eval.ExecutionContext execCxt, com.complexible.stardog.plan.QueryTerm context, java.util.function.IntFunction<java.lang.String> varNames, java.util.function.Function<java.lang.String,java.lang.Integer> varAllocator, boolean silent)	Translate the logical query to a physical plan tree, typically built using service queries as data sources.

Methods inherited from class com.complexible.stardog.plan.eval.service.PlanNodeBodyServiceQuery

body, equals, explain, explainVerbose, getAllVars, getAssuredVars, getContextVars, getObjectVars, getPredicateVars, getSubjectVars, getTermPositionPredicate, hashCode, noopBuilder, replaceBodyTerms

Methods inherited from class com.complexible.stardog.plan.eval.service.ServiceQuery

alternativeDistinctValues, distinctValues, estimateCardinality, estimateJoinCardinality, evaluate, evaluateSilent, evaluateSilent, generatesValues, get, getCardinality, getNamespaces, getOptions, getRequiredInputBindings, getRequiredUnboundOutputs, getUnsatisfiableConstraintsMessage, hasDuplicates, isBodySparqlQuery, preservesJoinArgumentOrdering, serviceTerm, setCardinality, setNamespaces, supportsJoinArgument

Methods inherited from class java.lang.Object

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

Field Detail

mService

protected final Service mService

Constructor Detail

LogicalServiceQuery

public LogicalServiceQuery(@Nullable
                           Service theService,
                           IRI theServiceIri,
                           com.complexible.stardog.plan.PlanNode theBody)

Parameters:

theService - can be null for variable-service queries and tests

Method Detail

evaluate

public com.complexible.stardog.plan.eval.operator.SolutionIterator evaluate(com.complexible.stardog.plan.eval.ExecutionContext theContext,
                                                                            com.complexible.stardog.plan.eval.operator.Operator theArg,
                                                                            com.complexible.stardog.plan.PlanVarInfo theVarInfo)
                                                                     throws com.complexible.stardog.plan.eval.operator.OperatorException

Description copied from class: ServiceQuery

Evaluate the query

Specified by:

evaluate in class ServiceQuery

theArg - a SIP join argument, null if not present. Solutions from the argument which satisfy the join must retain all bindings, including those which are not used in the join. Note that variables in the argument may be unassured.

Throws:

com.complexible.stardog.plan.eval.operator.OperatorException

replaceBody

public LogicalServiceQuery replaceBody(com.complexible.stardog.plan.PlanNode newBody)

Overrides:

replaceBody in class PlanNodeBodyServiceQuery

replaceBodyTerms

public com.complexible.stardog.plan.PlanNode replaceBodyTerms(com.complexible.stardog.plan.util.PlanNodeVarReplacer termReplacer,
                                                              com.complexible.stardog.plan.ServicePlanNode node)

Description copied from class: PlanNodeBodyServiceQuery

The default implementation of query term replacement in a service body represented as a plan node

Overrides:

replaceBodyTerms in class PlanNodeBodyServiceQuery

toPhysicalQuery

public com.complexible.stardog.plan.PlanNode toPhysicalQuery(com.complexible.stardog.plan.eval.ExecutionContext execCxt,
                                                             com.complexible.stardog.plan.QueryTerm context,
                                                             java.util.function.IntFunction<java.lang.String> varNames,
                                                             java.util.function.Function<java.lang.String,java.lang.Integer> varAllocator,
                                                             boolean silent)

Translate the logical query to a physical plan tree, typically built using service queries as data sources.

isClosed

public boolean isClosed()

Description copied from class: ServiceQuery

Is the service query "closed"? or can we still use it?

Overrides:

isClosed in class ServiceQuery

toBuilder

public PlanNodeBodyServiceQuery.PlanNodeBodyServiceQueryBuilder toBuilder()

Specified by:

toBuilder in class PlanNodeBodyServiceQuery

customTermReplacement

public boolean customTermReplacement()

supportsConstantReplacement

public boolean supportsConstantReplacement()