StatementTupleExpr (Eclipse RDF4J 4.2.4)

All Superinterfaces:

Cloneable, FedXTupleExpr, QueryModelNode, QueryRef, Serializable, TupleExpr, VariableExpr

All Known Implementing Classes:

CheckStatementPattern, ExclusiveGroup, ExclusiveStatement, FedXStatementPattern, StatementSourcePattern
```
public interface StatementTupleExpr
extends FedXTupleExpr
```
Interface for any expression that can be evaluated

Author:

Andreas Schwarte

See Also:

StatementSourcePattern, ExclusiveStatement, ExclusiveGroup

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`CloseableIteration<BindingSet,QueryEvaluationException>`	`evaluate(BindingSet bindings)`	Evaluate this expression using the provided bindings
`String`	`getId()`
`List<StatementSource>`	`getStatementSources()`
`boolean`	`hasFreeVarsFor(BindingSet binding)`	returns true iff this statement has free variables in the presence of the specified binding set

Methods inherited from interface org.eclipse.rdf4j.federated.algebra.FedXTupleExpr
getFreeVarCount

Methods inherited from interface org.eclipse.rdf4j.query.algebra.QueryModelNode
equals, getCostEstimate, getParentNode, getResultSizeActual, getResultSizeEstimate, getSignature, getTotalTimeNanosActual, replaceChildNode, replaceWith, setCostEstimate, setParentNode, setResultSizeActual, setResultSizeEstimate, setTotalTimeNanosActual, toString, visit, visitChildren

Methods inherited from interface org.eclipse.rdf4j.federated.algebra.QueryRef
getQueryInfo

Methods inherited from interface org.eclipse.rdf4j.query.algebra.TupleExpr
clone, getAssuredBindingNames, getBindingNames

Methods inherited from interface org.eclipse.rdf4j.federated.algebra.VariableExpr
getFreeVars

- Method Detail
  - getId
```
String getId()
```
    Returns:
    
    the id of this expr
  - getStatementSources
```
List<StatementSource> getStatementSources()
```
    Returns:
    
    a list of sources that are relevant for evaluation of this expression
  - hasFreeVarsFor
```
boolean hasFreeVarsFor(BindingSet binding)
```
    returns true iff this statement has free variables in the presence of the specified binding set
    
    Parameters:
    
    binding -
    
    Returns:
    
    whether the statement has free vars
  - evaluate
```
CloseableIteration<BindingSet,QueryEvaluationException> evaluate(BindingSet bindings)
                                                                throws QueryEvaluationException
```
    Evaluate this expression using the provided bindings
    
    Parameters:
    
    bindings -
    
    Returns:
    
    the result iteration
    
    Throws:
    
    QueryEvaluationException