org.globus.rsl
Class Bindings
java.lang.Object
org.globus.rsl.NameValue
org.globus.rsl.Bindings
public class Bindings
- extends NameValue
This class represnts a variable definitions in the RSL string
(see rsl_substitution attribute)
Constructor Summary |
Bindings(java.lang.String attribute)
|
Method Summary |
void |
add(Binding binding)
Adds a new variable definition to the list. |
Bindings |
evaluate(java.util.Map symbolTable)
Evaluates the variable definitions as variable definitions
can reference each other against the symbol table. |
boolean |
removeVariable(java.lang.String varName)
Removes a specific variable definition from
the list of bindings. |
void |
toRSL(java.lang.StringBuffer buf,
boolean explicitConcat)
Produces a RSL representation of this relation. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Bindings
public Bindings(java.lang.String attribute)
add
public void add(Binding binding)
- Adds a new variable definition to the list.
- Parameters:
binding
- a new variable definition.
removeVariable
public boolean removeVariable(java.lang.String varName)
- Removes a specific variable definition from
the list of bindings. The variable name must
match exactly to be removed (it is case sensitive).
- Parameters:
varName
- variable name to remove the definition of.
- Returns:
- true if the variable was successfully removed.
False, otherwise.
evaluate
public Bindings evaluate(java.util.Map symbolTable)
throws RslEvaluationException
- Evaluates the variable definitions as variable definitions
can reference each other against the symbol table.
The evaluation process updates the symbol table.
- Parameters:
symbolTable
- the symbol table to evalute the variables
against.
- Returns:
- a new evaluted variable definition.
- Throws:
RslEvaluationException
- If an error occured during
rsl evaluation.
toRSL
public void toRSL(java.lang.StringBuffer buf,
boolean explicitConcat)
- Produces a RSL representation of this relation.
- Specified by:
toRSL
in class NameValue
- Parameters:
buf
- buffer to add the RSL representation to.explicitConcat
- if true explicit concatination will
be used in RSL strings.