Expression.Operator (Apache Felix Gogo Runtime 0.16.2 API)

java.lang.Object

org.apache.felix.gogo.runtime.Expression.Operator

Direct Known Subclasses:: Expression.Assignment, Expression.Comparator

Enclosing class:: Expression

public abstract class Expression.Operator extends Object

Abstract definition of a supported operator. An operator is defined by its name (pattern), precedence and if it is left- or right associative.

Constructor Summary

Constructors

Constructor

Description

Operator(String oper, int precedence, boolean leftAssoc)

Creates a new operator.
Method Summary

Modifier and Type

Method

Description

Object

eval(String v1, String v2)

abstract BigDecimal

eval(BigDecimal v1, BigDecimal v2)

Implementation for this operator.

Object

eval(Map<String,Object> variables, Object v1, Object v2)

String

getOper()

int

getPrecedence()

boolean

isLeftAssoc()

String

toString()

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

Constructor Details
- Operator
  
  public Operator(String oper, int precedence, boolean leftAssoc)
  
  Creates a new operator.
  
  Parameters:
  
  oper - The operator name (pattern).
  
  precedence - The operators precedence.
  
  leftAssoc - true if the operator is left associative, else false.
Method Details
- getOper
  
  public String getOper()
- getPrecedence
  
  public int getPrecedence()
- isLeftAssoc
  
  public boolean isLeftAssoc()
- eval
  
  public Object eval(Map<String,Object> variables, Object v1, Object v2)
- eval
  
  public Object eval(String v1, String v2)
- eval
  
  public abstract BigDecimal eval(BigDecimal v1, BigDecimal v2)
  
  Implementation for this operator.
  
  Parameters:
  
  v1 - Operand 1.
  
  v2 - Operand 2.
  
  Returns:
  
  The result of the operation.
- toString
  
  public String toString()
  
  Overrides:
  
  toString in class Object