org.tentackle.db
Class CachedDbCursor<T extends DbObject>

java.lang.Object
  org.tentackle.db.SimpleDbCursor<T>
      org.tentackle.db.CachedDbCursor<T>

Type Parameters:

T - the data object class

All Implemented Interfaces:

DbCursor<T>

public class CachedDbCursor<T extends DbObject>
extends SimpleDbCursor<T>

A caching cursor. Objects are kept in a list.

Field Summary

Fields inherited from class org.tentackle.db.SimpleDbCursor

db, dbClass, object, rc, rcName, row, rows, rs, withLinkedObjects

Constructor Summary

CachedDbCursor(Db db, Class<T> dbClass, ResultSetWrapper rs)
Creates a caching cursor.

CachedDbCursor(Db db, Class<T> dbClass, ResultSetWrapper rs, boolean withLinkedObjects)
Creates a caching cursor.

CachedDbCursor(Db db, RemoteDbCursor rc)
Creates a cached remote Cursor on the client-side.

Method Summary

void	close() overridden close
T	getObject() Gets the cached object at the current row.
boolean	updateObjectOnly(T object) Updates the contents of an object at the current row.

Methods inherited from class org.tentackle.db.SimpleDbCursor

afterLast, beforeFirst, deleteObject, deleteObjectAt, fetch, finalize, first, getDbClass, getFetchDirection, getFetchSize, getObjectAt, getRow, getRowCount, isAfterLast, isBeforeFirst, isOpen, isRemote, last, newObject, next, previous, setDbContext, setFetchDirection, setFetchSize, setRow, toList, toListAndClose, toString, updateDbContext, updateObject, updateObjectAt

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

CachedDbCursor

public CachedDbCursor(Db db,
                      Class<T> dbClass,
                      ResultSetWrapper rs,
                      boolean withLinkedObjects)

Creates a caching cursor.

Parameters:

db - the db connection

dbClass - the DbObject class

rs - the resultset

withLinkedObjects - true if load linked objects, false otherwise

CachedDbCursor

public CachedDbCursor(Db db,
                      Class<T> dbClass,
                      ResultSetWrapper rs)

Creates a caching cursor.

Parameters:

db - the db connection

dbClass - the DbObject class

rs - the resultset

CachedDbCursor

public CachedDbCursor(Db db,
                      RemoteDbCursor rc)

Creates a cached remote Cursor on the client-side.

Parameters:

db - the db connection

rc - the remote cursor

Method Detail

close

public void close()

overridden close

Specified by:

close in interface DbCursor<T extends DbObject>

Overrides:

close in class SimpleDbCursor<T extends DbObject>

getObject

public T getObject()

Gets the cached object at the current row.

Specified by:

getObject in interface DbCursor<T extends DbObject>

Overrides:

getObject in class SimpleDbCursor<T extends DbObject>

Returns:

the object

updateObjectOnly

public boolean updateObjectOnly(T object)

Updates the contents of an object at the current row.

Specified by:

updateObjectOnly in interface DbCursor<T extends DbObject>

Overrides:

updateObjectOnly in class SimpleDbCursor<T extends DbObject>

Parameters:

object - the object to be updated

Returns:

true if update done, false if failed