Package org.exolab.castor.jdo.engine

Class OQLQueryImpl.OQLEnumeration

  • All Implemented Interfaces:
    java.util.Enumeration<java.lang.Object>, QueryResults
    Enclosing class:
    OQLQueryImpl
    class OQLQueryImpl.OQLEnumeration
extends java.lang.Object
implements QueryResults, java.util.Enumeration<java.lang.Object>
    Enumeration implementation to traverse the result as returned by the execution of the OQL query.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      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()  
      java.lang.Object next()
      Returns the next result in the result set.
      java.lang.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 Detail

      • OQLEnumeration

        OQLEnumeration​(QueryResults results,
               java.util.Vector<java.lang.String> pathInfo,
               ClassDescriptor clsDesc)
        Creates an instance of this class.
        Parameters:
        results -
        pathInfo -
        clsDesc -

    • Method Detail

      • hasMoreElements

        public boolean hasMoreElements()
        Specified by:
        hasMoreElements in interface java.util.Enumeration<java.lang.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

      • nextElement

        public java.lang.Object nextElement()
                             throws java.util.NoSuchElementException
        Specified by:
        nextElement in interface java.util.Enumeration<java.lang.Object>
        Throws:
        java.util.NoSuchElementException

      • next

        public java.lang.Object next()
                      throws PersistenceException,
                             java.util.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
        java.util.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