java.lang.Object

org.pentaho.reporting.libraries.formula.lvalues.AbstractLValue

org.pentaho.reporting.libraries.formula.lvalues.Term

All Implemented Interfaces:: Serializable, Cloneable, LValue

public class Term extends AbstractLValue

An term is a list of LValues connected by operators. For the sake of efficiency, this is not stored as tree. We store the term as a list in the following format: (headValue)(OP value)* ...

Author:

Thomas Morgner

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor

Description

Term(LValue headValue)
Method Summary

Modifier and Type

Method

Description

void

add(InfixOperator operator, LValue operand)

Object

clone()

TypeValuePair

evaluate()

LValue[]

getChildValues()

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

LValue

getHeadValue()

LValue[]

getOperands()

InfixOperator[]

getOperators()

LValue

getOptimizedHeadValue()

Allows access to the post optimized head value note that without the optimization, it's difficult to traverse libformula's object model.

ParsePosition

getParsePosition()

void

initialize(FormulaContext context)

boolean

isConstant()

Checks whether the LValue is constant.

String

toString()

Methods inherited from class org.pentaho.reporting.libraries.formula.lvalues.AbstractLValue
getContext, getValueType, setParsePosition

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details
- Term
  
  public Term(LValue headValue)
Method Details
- evaluate
  
  public TypeValuePair evaluate() throws EvaluationException
  
  Throws:
  
  EvaluationException
- add
  
  public void add(InfixOperator operator, LValue operand)
- initialize
  
  public void initialize(FormulaContext context) throws EvaluationException
  
  Specified by:
  
  initialize in interface LValue
  
  Overrides:
  
  initialize in class AbstractLValue
  
  Throws:
  
  EvaluationException
- getChildValues
  
  public LValue[] getChildValues()
  
  Returns any dependent lvalues (parameters and operands, mostly).
  
  Specified by:
  
  getChildValues in interface LValue
  
  Overrides:
  
  getChildValues in class AbstractLValue
  
  Returns:
- toString
  
  public String toString()
  
  Overrides:
  
  toString in class Object
- isConstant
  
  public boolean isConstant()
  
  Checks whether the LValue is constant. Constant lvalues always return the same value.
  
  Returns:
- clone
  
  public Object clone() throws CloneNotSupportedException
  
  Specified by:
  
  clone in interface LValue
  
  Overrides:
  
  clone in class AbstractLValue
  
  Throws:
  
  CloneNotSupportedException
- getOperands
  
  public LValue[] getOperands()
- getOperators
  
  public InfixOperator[] getOperators()
- getHeadValue
  
  public LValue getHeadValue()
- getOptimizedHeadValue
  
  public LValue getOptimizedHeadValue()
  
  Allows access to the post optimized head value note that without the optimization, it's difficult to traverse libformula's object model.
  
  Returns:
  
  optimized head value
- getParsePosition
  
  public ParsePosition getParsePosition()
  
  Specified by:
  
  getParsePosition in interface LValue
  
  Overrides:
  
  getParsePosition in class AbstractLValue

Class Term

Constructor Summary

Method Summary

Methods inherited from class org.pentaho.reporting.libraries.formula.lvalues.AbstractLValue

Methods inherited from class java.lang.Object

Constructor Details

Term

Method Details

evaluate

add

initialize

getChildValues

toString

isConstant

clone

getOperands

getOperators

getHeadValue

getOptimizedHeadValue

getParsePosition