Package org.eclipse.rdf4j.query.impl

Class AbstractOperation

java.lang.Object
org.eclipse.rdf4j.query.impl.AbstractOperation
All Implemented Interfaces:
Operation
Direct Known Subclasses:
AbstractQuery, AbstractUpdate
public abstract class AbstractOperation extends Object implements Operation
Abstract super class of all operation types.
Author:
Jeen Broekstra

  • Field Details

    • bindings

      protected final MapBindingSet bindings

    • dataset

      protected Dataset dataset

    • includeInferred

      protected boolean includeInferred

  • Constructor Details

    • AbstractOperation

      protected AbstractOperation()
      Creates a new operation object.

  • Method Details

    • setBinding

      public void setBinding​(String name, Value value)
      Description copied from interface: Operation
      Binds the specified variable to the supplied value. Any value that was previously bound to the specified value will be overwritten.
      Specified by:
      setBinding in interface Operation
      Parameters:
      name - The name of the variable that should be bound.
      value - The (new) value for the specified variable.

    • removeBinding

      public void removeBinding​(String name)
      Description copied from interface: Operation
      Removes a previously set binding on the supplied variable. Calling this method with an unbound variable name has no effect.
      Specified by:
      removeBinding in interface Operation
      Parameters:
      name - The name of the variable from which the binding is to be removed.

    • clearBindings

      public void clearBindings()
      Description copied from interface: Operation
      Removes all previously set bindings.
      Specified by:
      clearBindings in interface Operation

    • getBindings

      public BindingSet getBindings()
      Description copied from interface: Operation
      Retrieves the bindings that have been set on this operation.
      Specified by:
      getBindings in interface Operation
      Returns:
      A (possibly empty) set of operation variable bindings.
      See Also:
      Operation.setBinding(String, Value)

    • setDataset

      public void setDataset​(Dataset dataset)
      Description copied from interface: Operation
      Specifies the dataset against which to execute an operation, overriding any dataset that is specified in the operation itself.
      Specified by:
      setDataset in interface Operation

    • getDataset

      public Dataset getDataset()
      Description copied from interface: Operation
      Gets the dataset that has been set using Operation.setDataset(Dataset), if any.
      Specified by:
      getDataset in interface Operation

    • setIncludeInferred

      public void setIncludeInferred​(boolean includeInferred)
      Description copied from interface: Operation
      Determine whether evaluation results of this operation should include inferred statements (if any inferred statements are present in the repository). The default setting is 'true'.
      Specified by:
      setIncludeInferred in interface Operation
      Parameters:
      includeInferred - indicates whether inferred statements should be included in the result.

    • getIncludeInferred

      public boolean getIncludeInferred()
      Description copied from interface: Operation
      Returns whether or not this operation will return inferred statements (if any are present in the repository).
      Specified by:
      getIncludeInferred in interface Operation
      Returns:
      true if inferred statements will be returned, false otherwise.

    • setMaxExecutionTime

      public void setMaxExecutionTime​(int maxExecutionTimeSeconds)
      Description copied from interface: Operation
      Specifies the maximum time that an operation is allowed to run. The operation will be interrupted when it exceeds the time limit. Any consecutive requests to fetch query results will result in QueryInterruptedExceptions or UpdateExecutionExceptions (depending on whether the operation is a query or an update).
      Specified by:
      setMaxExecutionTime in interface Operation
      Parameters:
      maxExecutionTimeSeconds - The maximum query time, measured in seconds. A negative or zero value indicates an unlimited execution time (which is the default).

    • getMaxExecutionTime

      public int getMaxExecutionTime()
      Description copied from interface: Operation
      Returns the maximum operation execution time.
      Specified by:
      getMaxExecutionTime in interface Operation
      Returns:
      The maximum operation execution time, measured in seconds.
      See Also:
      Operation.setMaxExecutionTime(int)