LValue

All Superinterfaces:: Cloneable, Serializable

All Known Subinterfaces:: DataTable

All Known Implementing Classes:: AbstractLValue, ContextLookup, DefaultDataTable, FormulaFunction, PostfixTerm, PrefixTerm, StaticValue, Term

public interface LValue extends Serializable, Cloneable

A reference is an indirection to hide the details of where the actual value came from. The reference is responsible to report dependencies.

Author:: Thomas Morgner

Method Summary

Modifier and Type

Method

Description

Object

clone()

TypeValuePair

evaluate()

LValue[]

getChildValues()

Returns any dependent lvalues (parameters and operands, mostly).

ParsePosition

getParsePosition()

Type

getValueType()

Querying the value type is only valid *after* the value has been evaluated.

void

initialize(FormulaContext context)

boolean

isConstant()

Checks whether the LValue is constant.

Method Details
- initialize
  
  void initialize(FormulaContext context) throws EvaluationException
  
  Throws:
  
  EvaluationException
- evaluate
  
  TypeValuePair evaluate() throws EvaluationException
  
  Throws:
  
  EvaluationException
- clone
  
  Object clone() throws CloneNotSupportedException
  
  Throws:
  
  CloneNotSupportedException
- getValueType
  
  Type getValueType()
  
  Querying the value type is only valid *after* the value has been evaluated.
  
  Returns:
- getChildValues
  
  LValue[] getChildValues()
  
  Returns any dependent lvalues (parameters and operands, mostly).
  
  Returns:
- isConstant
  
  boolean isConstant()
  
  Checks whether the LValue is constant. Constant lvalues always return the same value.
  
  Returns:
- getParsePosition
  
  ParsePosition getParsePosition()