Package org.apache.commons.jxpath.ri.compiler

Class VariableReference

java.lang.Object
org.apache.commons.jxpath.ri.compiler.Expression
org.apache.commons.jxpath.ri.compiler.VariableReference
public class VariableReference extends Expression
An element of the compile tree holding a variable reference.

  • Field Details

    • varName

      private final QName varName

  • Constructor Details

    • VariableReference

      public VariableReference(QName varName)
      Constructs a new VariableReference.
      Parameters:
      varName - variable name

  • Method Details

    • compute

      public Object compute(EvalContext context)
      Description copied from class: Expression
      Evaluates the expression. If the result is a node set, returns the first element of the node set.
      Specified by:
      compute in class Expression
      Parameters:
      context - evaluation context
      Returns:
      Object

    • computeContextDependent

      public boolean computeContextDependent()
      Description copied from class: Expression
      Implemented by subclasses and result is cached by isContextDependent()
      Specified by:
      computeContextDependent in class Expression
      Returns:
      calculated context-dependentness as boolean

    • computeValue

      public Object computeValue(EvalContext context)
      Returns the value of the variable.
      Specified by:
      computeValue in class Expression
      Parameters:
      context - EvalContext against which to compute the variable's value.
      Returns:
      Object

    • getVariableName

      public QName getVariableName()
      Gets the variable name.
      Returns:
      QName

    • isContextDependent

      public boolean isContextDependent()
      Description copied from class: Expression
      Returns true if this expression should be re-evaluated each time the current position in the context changes.
      Overrides:
      isContextDependent in class Expression
      Returns:
      boolean

    • toString

      public String toString()
      Overrides:
      toString in class Object