JDOIsEmpty (Ontopia)

java.lang.Object

net.ontopia.persistence.query.jdo.JDOIsEmpty

All Implemented Interfaces:: JDOExpressionIF

public class JDOIsEmpty extends Object implements JDOExpressionIF

INTERNAL: JDOQL method: Collection.isEmpty(). Syntax: 'A.isEmpty()'.

Field Summary

Fields

Modifier and Type

Field

Description

protected JDOValueIF

value

Fields inherited from interface net.ontopia.persistence.query.jdo.JDOExpressionIF
AND, BOOLEAN, CONTAINS, ENDS_WITH, EQUALS, IS_EMPTY, LIKE, NOT, NOT_EQUALS, OR, SET_OPERATION, STARTS_WITH, VALUE_EXPRESSION
Constructor Summary

Constructors

Constructor

Description

JDOIsEmpty(JDOField value)

JDOIsEmpty(JDOValueIF value)
Method Summary

Modifier and Type

Method

Description

boolean

equals(Object obj)

int

getType()

INTERNAL: Returns the type of JDO expression indicated by one of the constants in the JDOExpressionIF interface.

JDOValueIF

getValue()

int

hashCode()

String

toString()

void

visit(JDOVisitorIF visitor)

INTERNAL: Allows the value to be visited.

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

Field Details
- value
  
  protected JDOValueIF value
Constructor Details
- JDOIsEmpty
  
  public JDOIsEmpty(JDOField value)
- JDOIsEmpty
  
  public JDOIsEmpty(JDOValueIF value)
Method Details
- getType
  
  public int getType()
  
  Description copied from interface: JDOExpressionIF
  
  INTERNAL: Returns the type of JDO expression indicated by one of the constants in the JDOExpressionIF interface.
  
  Specified by:
  
  getType in interface JDOExpressionIF
- getValue
  
  public JDOValueIF getValue()
- hashCode
  
  public int hashCode()
  
  Overrides:
  
  hashCode in class Object
- equals
  
  public boolean equals(Object obj)
  
  Overrides:
  
  equals in class Object
- toString
  
  public String toString()
  
  Overrides:
  
  toString in class Object
- visit
  
  public void visit(JDOVisitorIF visitor)
  
  Description copied from interface: JDOExpressionIF
  
  INTERNAL: Allows the value to be visited. This method is used for retrieval of nested data in expressions.
  
  Specified by:
  
  visit in interface JDOExpressionIF