org.quattor.pan.dml.functions
Class Exists

java.lang.Object
  org.quattor.pan.dml.AbstractOperation
      org.quattor.pan.dml.functions.BuiltInFunction
          org.quattor.pan.dml.functions.Exists

All Implemented Interfaces:

Operation

Direct Known Subclasses:

StringExists, VariableExists

public abstract class Exists
extends BuiltInFunction

Tests whether the variable referenced in the function's argument exists.

Author:

loomis

Field Summary

Fields inherited from class org.quattor.pan.dml.functions.BuiltInFunction

name

Fields inherited from class org.quattor.pan.dml.AbstractOperation

ops, sourceRange

Constructor Summary

protected

Exists(SourceRange sourceRange, Operation... operations)

Method Summary

static Operation

getInstance(SourceRange sourceRange, Operation... operations)

Methods inherited from class org.quattor.pan.dml.functions.BuiltInFunction

throwExceptionIfCompileTimeContext, toString

Methods inherited from class org.quattor.pan.dml.AbstractOperation

calculateArgs, calculateTerms, checkInvalidSelfContext, checkRestrictedContext, execute, getOperations, getSourceRange

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Exists

protected Exists(SourceRange sourceRange,
                 Operation... operations)
          throws SyntaxException

Throws:

SyntaxException

Method Detail

getInstance

public static Operation getInstance(SourceRange sourceRange,
                                    Operation... operations)
                             throws SyntaxException

Throws:

SyntaxException