org.datanucleus.query.expression
Class Expression.MonadicOperator

java.lang.Object
  extended by org.datanucleus.query.expression.Expression.Operator
      extended by org.datanucleus.query.expression.Expression.MonadicOperator
Enclosing class:
Expression

public static class Expression.MonadicOperator
extends Expression.Operator

"Monadic" operator performs a function on one operand. It can be in either postfix or prefix notation.


Field Summary
 
Fields inherited from class org.datanucleus.query.expression.Expression.Operator
precedence, symbol
 
Constructor Summary
Expression.MonadicOperator(java.lang.String symbol, int precedence)
          Monodiac operator
 
Method Summary
 boolean isHigherThan(Expression.Operator op)
          Check if this operator has higher precedence than op
 
Methods inherited from class org.datanucleus.query.expression.Expression.Operator
toString
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

Expression.MonadicOperator

public Expression.MonadicOperator(java.lang.String symbol,
                                  int precedence)
Monodiac operator

Parameters:
symbol - the source text or symbol of an operator. e.g =, ==, +, /, >, <, etc
precedence - the order of precedence where the expression is compiled
Method Detail

isHigherThan

public boolean isHigherThan(Expression.Operator op)
Check if this operator has higher precedence than op

Parameters:
op - the operator
Returns:
true if this operation is higher


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