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com.presumo.jms.selector
Class JmsLess  

java.lang.Object
  com.presumo.jms.selector.JmsOperand
      com.presumo.jms.selector.JmsBinaryOperand
          com.presumo.jms.selector.JmsLess

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final class JmsLess

extends JmsBinaryOperand

Expression node for the SQL less than expression. There is no implementation for less than equals "<=" because the parser represents such statements as a greater than with the operands switched.

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Field Summary
protected  JmsOperand	lvalue
protected  JmsOperand	rvalue
protected static java.lang.String	STRING_REP

 

Fields inherited from class com.presumo.jms.selector.JmsOperand

evalNumber, JMS_BINARY_ADD, JMS_BINARY_AND, JMS_BINARY_DIV, JMS_BINARY_MULT, JMS_BINARY_OR, JMS_BINARY_SUB, JMS_BOOLEAN_LITERAL, JMS_EQUALS, JMS_FLOAT_LITERAL, JMS_GREATER, JMS_IDENTIFIER, JMS_INTEGER_LITERAL, JMS_IS, JMS_LESS, JMS_LIKE, JMS_NOT, JMS_STRING_LITERAL, lastEval, myEvalNumber, parents, refcount

 

Constructor Summary
protected	JmsLess(JmsOperand lvalue, JmsOperand rvalue)

 

Method Summary
protected  void	delete(JmsOperand parent)
(package private)  JmsOperand	evaluate(javax.jms.Message msg)           Evaluates the expression tree represented by this node.
(package private) static JmsLess	getInstance(JmsOperand lvalue, JmsOperand rvalue)
protected static JmsBinaryOperand	getInstanceNonReflective(short parentType, JmsOperand lvalue, JmsOperand rvalue)           Called when order matters.
protected static JmsBinaryOperand	getInstanceReflective(short parentType, JmsOperand lvalue, JmsOperand rvalue)           Called when the left and the right values can be interchanged like with an equals statement.
(package private)  short	getType()
(package private)  void	incrementAllRefCounts()           Increments all reference counts in this tree
protected  JmsOperand	leftChild()
(package private)  void	printTree(int level)
protected  JmsOperand	rightChild()
(package private)  java.lang.String	unParse()           Returns a String representing the SQL form of the filter which is logically equivilant.

 

Methods inherited from class com.presumo.jms.selector.JmsOperand

addParent, addParentRef, allParents, delete, evaluateOnce, getAllInstances, hasParent, incrementRefCount, numberOfParents, removeParent, resetStoredEvals

 

Methods inherited from class java.lang.Object

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

 

Field Detail

STRING_REP

protected static java.lang.String STRING_REP

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lvalue

protected JmsOperand lvalue

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rvalue

protected JmsOperand rvalue

Constructor Detail

JmsLess

protected JmsLess(JmsOperand lvalue,
                  JmsOperand rvalue)

Method Detail

getInstance

static JmsLess getInstance(JmsOperand lvalue,
                           JmsOperand rvalue)

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evaluate

JmsOperand evaluate(javax.jms.Message msg)
              throws SelectorFalseException

Description copied from class: JmsOperand

Evaluates the expression tree represented by this node.

Specified by:

evaluate in class JmsOperand

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getType

short getType()

Specified by:

getType in class JmsOperand

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getInstanceReflective

protected static JmsBinaryOperand getInstanceReflective(short parentType,
                                                        JmsOperand lvalue,
                                                        JmsOperand rvalue)

Called when the left and the right values can be interchanged like with an equals statement.

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getInstanceNonReflective

protected static JmsBinaryOperand getInstanceNonReflective(short parentType,
                                                           JmsOperand lvalue,
                                                           JmsOperand rvalue)

Called when order matters.

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incrementAllRefCounts

void incrementAllRefCounts()

Description copied from class: JmsOperand

Increments all reference counts in this tree

Overrides:

incrementAllRefCounts in class JmsOperand

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unParse

java.lang.String unParse()

Description copied from class: JmsOperand

Returns a String representing the SQL form of the filter which is logically equivilant.

Specified by:

unParse in class JmsOperand

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printTree

void printTree(int level)

Overrides:

printTree in class JmsOperand

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leftChild

protected JmsOperand leftChild()

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rightChild

protected JmsOperand rightChild()

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delete

protected void delete(JmsOperand parent)

Overrides:

delete in class JmsOperand

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Home >> All >> com >> presumo >> jms >> [ selector overview ]	PREV CLASS  NEXT CLASS
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