java.lang.Object

org.exolab.castor.jdo.engine.OQLQueryImpl.OQLEnumeration

All Implemented Interfaces:: Enumeration<Object>, QueryResults

Enclosing class:: OQLQueryImpl

class OQLQueryImpl.OQLEnumeration extends Object implements QueryResults, Enumeration<Object>

Enumeration implementation to traverse the result as returned by the execution of the OQL query.

Constructor Summary

Constructors

Constructor

Description

OQLEnumeration(QueryResults results)

OQLEnumeration(QueryResults results, Vector<String> pathInfo, ClassDescriptor clsDesc)

Creates an instance of this class.
Method Summary

Modifier and Type

Method

Description

boolean

absolute(int row)

moves the result of the query to the absolute position in the resultset.

void

close()

Closes the result set and releases all resources held by it.

boolean

hasMore()

Returns true if there are any more results in the result set.

boolean

hasMore(boolean skipError)

boolean

hasMoreElements()

Object

next()

Returns the next result in the result set.

Object

nextElement()

int

size()

Finds the size of the resulting resultset from the query.

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

Methods inherited from interface java.util.Enumeration
asIterator

Constructor Details
- OQLEnumeration
  
  OQLEnumeration(QueryResults results, Vector<String> pathInfo, ClassDescriptor clsDesc)
  
  Creates an instance of this class.
  
  Parameters:
  
  results -
  
  pathInfo -
  
  clsDesc -
- OQLEnumeration
  
  OQLEnumeration(QueryResults results)
Method Details
- absolute
  
  public boolean absolute(int row) throws PersistenceException
  
  Description copied from interface: QueryResults
  
  moves the result of the query to the absolute position in the resultset.
  
  Specified by:
  
  absolute in interface QueryResults
  
  Parameters:
  
  row - The row to move to
  
  Returns:
  
  ???
  
  Throws:
  
  PersistenceException - A persistence error occured
- size
  
  public int size() throws PersistenceException
  
  Description copied from interface: QueryResults
  
  Finds the size of the resulting resultset from the query.
  
  Specified by:
  
  size in interface QueryResults
  
  Returns:
  
  Size of the resulting result set.
  
  Throws:
  
  PersistenceException - A persistence error occured
- hasMoreElements
  
  public boolean hasMoreElements()
  
  Specified by:
  
  hasMoreElements in interface Enumeration<Object>
- hasMore
  
  public boolean hasMore() throws PersistenceException
  
  Description copied from interface: QueryResults
  
  Returns true if there are any more results in the result set. If an error occured reading the last result, an exception will be thrown and the result set cannot be used further.
  
  Specified by:
  
  hasMore in interface QueryResults
  
  Returns:
  
  True if there are any more results in the result set
  
  Throws:
  
  PersistenceException - An error with the persistence engine
- hasMore
  
  public boolean hasMore(boolean skipError) throws PersistenceException
  
  Throws:
  
  PersistenceException
- nextElement
  
  public Object nextElement() throws NoSuchElementException
  
  Specified by:
  
  nextElement in interface Enumeration<Object>
  
  Throws:
  
  NoSuchElementException
- next
  
  public Object next() throws PersistenceException, NoSuchElementException
  
  Description copied from interface: QueryResults
  
  Returns the next result in the result set. If there are no more results (a previous cal to QueryResults.hasMore() returns false) this method will throw an exceptin. If an error occured reading the last result, an exception will be thrown and the result set cannot be used further.
  
  Specified by:
  
  next in interface QueryResults
  
  Returns:
  
  The next result in the result set
  
  Throws:
  
  PersistenceException - An error with the persistence engine
  
  NoSuchElementException - There are no more results in the result set
- close
  
  public void close()
  
  Description copied from interface: QueryResults
  
  Closes the result set and releases all resources held by it.
  
  Specified by:
  
  close in interface QueryResults

Class OQLQueryImpl.OQLEnumeration

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface java.util.Enumeration

Constructor Details

OQLEnumeration

OQLEnumeration

Method Details

absolute

size

hasMoreElements

hasMore

hasMore

nextElement

next

close