Interface QueryResults

All Superinterfaces:
Enumeration<Object>
All Known Implementing Classes:
OQLQueryImpl.OQLEnumeration, SimpleQueryExecutor.SimpleQueryResults

public interface QueryResults extends Enumeration<Object>
An iteration of the results of a query. This interface provides the ability to move forward only in the result set and pick the next result and close it.
Version:
$Revision: 8141 $ $Date: 2004-05-03 16:05:30 -0600 (Mon, 03 May 2004) $
Author:
Assaf Arkin
  • 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
    Closes the result set and releases all resources held by it.
    boolean
    Returns true if there are any more results in the result set.
    Returns the next result in the result set.
    int
    Finds the size of the resulting resultset from the query.

    Methods inherited from interface java.util.Enumeration

    asIterator, hasMoreElements, nextElement
  • Method Details

    • hasMore

      boolean hasMore() throws PersistenceException
      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.
      Returns:
      True if there are any more results in the result set
      Throws:
      PersistenceException - An error with the persistence engine
    • next

      Returns the next result in the result set. If there are no more results (a previous cal to 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.
      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

      void close()
      Closes the result set and releases all resources held by it.
    • absolute

      boolean absolute(int row) throws PersistenceException
      moves the result of the query to the absolute position in the resultset.
      Parameters:
      row - The row to move to
      Returns:
      ???
      Throws:
      PersistenceException - A persistence error occured
    • size

      int size() throws PersistenceException
      Finds the size of the resulting resultset from the query.
      Returns:
      Size of the resulting result set.
      Throws:
      PersistenceException - A persistence error occured