Class RslNode

java.lang.Object
org.globus.rsl.AbstractRslNode
org.globus.rsl.RslNode
public class RslNode extends AbstractRslNode
This class represents a RSL parse tree. It is composed of variable definitions (bindings), relations, and sub-specifications (sub nodes).

  • Field Details

    • _relations

      protected Map _relations

    • _bindings

      protected Map _bindings

  • Constructor Details

    • RslNode

      public RslNode()

    • RslNode

      public RslNode(int operator)

  • Method Details

    • put

      public Bindings put(Bindings bindings)

    • add

      public boolean add(Bindings bindings)
      Specified by:
      add in class AbstractRslNode

    • put

      public NameOpValue put(NameOpValue relation)

    • add

      public boolean add(NameOpValue relation)
      Specified by:
      add in class AbstractRslNode

    • mergeTo

      public void mergeTo(AbstractRslNode dstNode)
      Overrides:
      mergeTo in class AbstractRslNode

    • getParam

      public NameOpValue getParam(String attribute)
      Returns the relation associated with the given attribute.
      Specified by:
      getParam in class AbstractRslNode
      Parameters:
      attribute - the attribute of the relation.
      Returns:
      the relation for the attribute. Null, if not found.

    • getBindings

      public Bindings getBindings(String attribute)
      Returns the variable definitions associated wit the given attribute.
      Specified by:
      getBindings in class AbstractRslNode
      Parameters:
      attribute - the attribute of the variable deinitions.
      Returns:
      the variable deinitions for the attribute. Null, if not found.

    • removeParam

      public NameOpValue removeParam(String attribute)
      Removes a relation for the specified attribute.
      Specified by:
      removeParam in class AbstractRslNode
      Parameters:
      attribute - the attribute name for the relation to remove.
      Returns:
      the relation that was removed.

    • removeBindings

      public Bindings removeBindings(String attribute)
      Removes a bindings list for the specified attribute.
      Specified by:
      removeBindings in class AbstractRslNode
      Parameters:
      attribute - the attribute name for the bindings.
      Returns:
      the bindings that were removed.

    • getRelations

      public Map getRelations()
      Returns the relations.
      Returns:
      the map of relations.

    • getBindings

      public Map getBindings()
      Returns the variable definitions.
      Returns:
      the map of variable definitions.

    • evaluate

      public AbstractRslNode evaluate(Map symbolTable) throws RslEvaluationException
      Evalutes the rsl tree against the specified symbol table. All the variable definitions are first evaluated because they might update the symbol table. Then all the relations followed by the sub-specifications are evaluated.
      Specified by:
      evaluate in class AbstractRslNode
      Parameters:
      symbolTable - the symbol table to evalute variables against.
      Returns:
      the evaluated rsl tree.
      Throws:
      RslEvaluationException - If an error occured during rsl evaluation.

    • toRSL

      public void toRSL(StringBuffer buf, boolean explicitConcat)
      Produces a RSL representation of node.
      Specified by:
      toRSL in class AbstractRslNode
      Parameters:
      buf - buffer to add the RSL representation to.
      explicitConcat - if true explicit concatination will be used in RSL strings.