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com.presumo.jms.selector
Class JmsStringLiteral  

java.lang.Object
  com.presumo.jms.selector.JmsOperand
      com.presumo.jms.selector.JmsDataType
          com.presumo.jms.selector.JmsStringLiteral

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class JmsStringLiteral

extends JmsDataType

Expression node to represent String literals

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Field Summary
(package private)  java.lang.String	data
private static java.util.Hashtable	instances
protected  java.lang.String	stringRepresentation

 

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	JmsStringLiteral(java.lang.String newValue)           Called by getInstance which controls instance creation.

 

Method Summary
protected  void	delete(JmsOperand parent)
(package private)  JmsBooleanLiteral	eq(JmsDataType value)
(package private)  JmsOperand	evaluate(javax.jms.Message msg)           Returns the object represented by this instance.
(package private)  JmsOperand	evaluateOnce(javax.jms.Message msg)           Returns the object represented by this instance.
(package private) static JmsStringLiteral	getInstance(java.lang.String newValue)           Psuedo-singleton access point.
(package private)  short	getType()           Used to identify this object in places where instanceof is inapplicable.
(package private) static JmsStringLiteral	getUniqueInstance(java.lang.String newValue)           During evaluation, JmsIdentifier needs to create JmsStringLiterals.
java.lang.String	toString()           Create a string representation of this object.
(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, getAllInstances, hasParent, incrementAllRefCounts, incrementRefCount, numberOfParents, printTree, removeParent, resetStoredEvals

 

Methods inherited from class java.lang.Object

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

 

Field Detail

data

final java.lang.String data

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instances

private static java.util.Hashtable instances

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stringRepresentation

protected java.lang.String stringRepresentation

Constructor Detail

JmsStringLiteral

protected JmsStringLiteral(java.lang.String newValue)

Called by getInstance which controls instance creation.

Method Detail

getInstance

static JmsStringLiteral getInstance(java.lang.String newValue)

Psuedo-singleton access point. Only one instance for each long value will ever be created and returned.

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getUniqueInstance

static JmsStringLiteral getUniqueInstance(java.lang.String newValue)

During evaluation, JmsIdentifier needs to create JmsStringLiterals. These literals need not be singletons. This access point returns a non-singleton instance.

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toString

public java.lang.String toString()

Create a string representation of this object.

Overrides:

toString in class JmsDataType

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eq

JmsBooleanLiteral eq(JmsDataType value)
               throws SelectorFalseException

Specified by:

eq in class JmsDataType

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getType

short getType()

Used to identify this object in places where instanceof is inapplicable.

Specified by:

getType in class JmsOperand

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delete

protected void delete(JmsOperand parent)

Overrides:

delete in class JmsOperand

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evaluate

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

Returns the object represented by this instance.

Specified by:

evaluate in class JmsOperand

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evaluateOnce

final JmsOperand evaluateOnce(javax.jms.Message msg)
                       throws SelectorFalseException

Returns the object represented by this instance. Saves a method call on something that already has a constant evaluation time.

Overrides:

evaluateOnce 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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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> com >> presumo >> jms >> [ selector overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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