Package org.globus.rsl

Class ListRslNode

  • public class ListRslNode
extends AbstractRslNode
    This class represents an abstract RSL parse tree. It is composed of variable definitions (bindings), relations, and sub-specifications (sub nodes).

    • Field Detail

      • _relations

        protected java.util.List _relations

      • _bindings

        protected java.util.List _bindings

    • Constructor Detail

      • ListRslNode

        public ListRslNode()

      • ListRslNode

        public ListRslNode​(int operator)

    • Method Detail

      • getParam

        public NameOpValue getParam​(java.lang.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​(java.lang.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.

      • removeBindings

        public Bindings removeBindings​(java.lang.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.

      • removeParam

        public NameOpValue removeParam​(java.lang.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.

      • getRelations

        public java.util.List getRelations()
        Returns the relations.
        Returns:
        the list of relations.

      • getBindings

        public java.util.List getBindings()
        Returns the variable definitions.
        Returns:
        the map of variable definitions.

      • evaluate

        public AbstractRslNode evaluate​(java.util.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​(java.lang.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.