org.datanucleus.store.rdbms.query

Class AbstractRDBMSQueryResult

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractList

org.datanucleus.store.query.AbstractQueryResult

org.datanucleus.store.rdbms.query.AbstractRDBMSQueryResult

All Implemented Interfaces:

Serializable, Iterable, Collection, List, org.datanucleus.store.query.QueryResult

Direct Known Subclasses:

ForwardQueryResult, ScrollableQueryResult

public abstract class AbstractRDBMSQueryResult
extends org.datanucleus.store.query.AbstractQueryResult

Abstract representation of a QueryResult for RDBMS queries. Based on the assumption that we have a JDBC ResultSet, and we are extracting the results using a ResultObjectFactory.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected Map<Object,Map<Integer,Object>>	bulkLoadedValueByMemberNumber
protected ResultObjectFactory	rof ResultObjectFactory for converting the result set into objects.
protected ResultSet	rs The ResultSet containing the results.

Fields inherited from class org.datanucleus.store.query.AbstractQueryResult

closed, connectionListeners, loadResultsAtCommit, LOCALISER, query, resultSizeMethod, size

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

Constructors

Constructor and Description
AbstractRDBMSQueryResult(org.datanucleus.store.query.Query query, ResultObjectFactory rof, ResultSet rs) Constructor of the result from a Query.

Method Summary

Methods

Modifier and Type	Method and Description
void	close() Method to close the results, meaning that they are inaccessible after this point.
protected void	closeResults() Internal method to close the ResultSet.
void	disconnect() Method to disconnect the results from the ExecutionContext, meaning that thereafter it just behaves like a List.
int	hashCode() Override for compatibility with equals().
abstract void	initialise()
void	registerMemberBulkResultSet(IteratorStatement iterStmt, ResultSet rs)

Methods inherited from class org.datanucleus.store.query.AbstractQueryResult

add, add, addAll, addConnectionListener, assertIsOpen, clear, closingConnection, contains, containsAll, equals, get, getSizeUsingMethod, indexOf, isEmpty, isOpen, iterator, lastIndexOf, listIterator, remove, set, size, subList, toArray, toArray

Methods inherited from class java.util.AbstractList

listIterator, removeRange

Methods inherited from class java.util.AbstractCollection

addAll, remove, removeAll, retainAll, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Collection

addAll, remove, removeAll, retainAll

Methods inherited from interface java.util.List

addAll, remove, removeAll, retainAll

Field Detail

rs

protected ResultSet rs

The ResultSet containing the results.

rof

protected ResultObjectFactory rof

ResultObjectFactory for converting the result set into objects.

bulkLoadedValueByMemberNumber

protected Map<Object,Map<Integer,Object>> bulkLoadedValueByMemberNumber

Constructor Detail

AbstractRDBMSQueryResult

public AbstractRDBMSQueryResult(org.datanucleus.store.query.Query query,
                        ResultObjectFactory rof,
                        ResultSet rs)

Constructor of the result from a Query.

Parameters:

query - The Query

rof - The factory to retrieve results from

rs - The ResultSet from the Query Statement

Method Detail

registerMemberBulkResultSet

public void registerMemberBulkResultSet(IteratorStatement iterStmt,
                               ResultSet rs)

initialise

public abstract void initialise()
                         throws SQLException

Throws:

SQLException

disconnect

public void disconnect()

Method to disconnect the results from the ExecutionContext, meaning that thereafter it just behaves like a List. All remaining results are read in at this point (unless selected not to be).

Specified by:

disconnect in interface org.datanucleus.store.query.QueryResult

Overrides:

disconnect in class org.datanucleus.store.query.AbstractQueryResult

close

public void close()

Method to close the results, meaning that they are inaccessible after this point.

Specified by:

close in interface org.datanucleus.store.query.QueryResult

Overrides:

close in class org.datanucleus.store.query.AbstractQueryResult

closeResults

protected void closeResults()

Internal method to close the ResultSet.

Specified by:

closeResults in class org.datanucleus.store.query.AbstractQueryResult

hashCode

public int hashCode()

Override for compatibility with equals().

Specified by:

hashCode in interface Collection

Specified by:

hashCode in interface List

Overrides:

hashCode in class org.datanucleus.store.query.AbstractQueryResult

Returns:

The hashcode