org.nakedobjects.persistence.file
Class DataManager

java.lang.Object
  org.nakedobjects.persistence.file.DataManager

Direct Known Subclasses:

InMemoryDataManager, XmlDataManager

public abstract class DataManager

extends java.lang.Object

Constructor Summary

DataManager()

Method Summary

void	create(Data data)
SimpleOid	createOid()
protected abstract void	deleteFile(long id)
protected abstract long	nextId()
Data	read(java.lang.Object oid)
CollectionData	readCollection(java.lang.Object oid)
protected abstract Data	readDataFile(long id)
protected abstract java.util.Vector	readInstanceFile(java.lang.String type)
java.util.Vector	readInstances(NakedClass type)
ObjectData	readObject(java.lang.Object oid)
long	readSerialNumber(java.lang.String sequence)
protected abstract long	readSerialNumberFile(java.lang.String name)
void	remove(java.lang.Object oid)
void	write(Data data)
protected abstract void	writeDataFile(long id, Data data)
protected abstract void	writeInstanceFile(java.lang.String name, java.util.Vector instances)
void	writeSerialNumber(java.lang.String sequence, long serialNumber)
protected abstract void	writeSerialNumberFile(java.lang.String name, long serialNumber)

Methods inherited from class java.lang.Object

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

Constructor Detail

DataManager

public DataManager()

Method Detail

create

public final void create(Data data)
                  throws ObjectStoreException

Throws:

ObjectStoreException

createOid

public final SimpleOid createOid()
                          throws ObjectStoreException

Throws:

ObjectStoreException

read

public final Data read(java.lang.Object oid)
                throws ObjectNotFoundException,
                       ObjectStoreException

Throws:

ObjectNotFoundException

ObjectStoreException

readCollection

public final CollectionData readCollection(java.lang.Object oid)
                                    throws ObjectNotFoundException,
                                           ObjectStoreException

Throws:

ObjectNotFoundException

ObjectStoreException

readInstances

public final java.util.Vector readInstances(NakedClass type)
                                     throws ObjectStoreException

Throws:

ObjectStoreException

readObject

public final ObjectData readObject(java.lang.Object oid)
                            throws ObjectNotFoundException,
                                   ObjectStoreException

Throws:

ObjectNotFoundException

ObjectStoreException

remove

public final void remove(java.lang.Object oid)
                  throws ObjectNotFoundException,
                         ObjectStoreException

Throws:

ObjectNotFoundException

ObjectStoreException

write

public final void write(Data data)
                 throws ObjectStoreException

Throws:

ObjectStoreException

readSerialNumber

public long readSerialNumber(java.lang.String sequence)

writeSerialNumber

public void writeSerialNumber(java.lang.String sequence,
                              long serialNumber)

deleteFile

protected abstract void deleteFile(long id)
                            throws ObjectStoreException

Throws:

ObjectStoreException

nextId

protected abstract long nextId()
                        throws ObjectStoreException

Throws:

ObjectStoreException

readDataFile

protected abstract Data readDataFile(long id)
                              throws ObjectNotFoundException,
                                     ObjectStoreException

Throws:

ObjectNotFoundException

ObjectStoreException

readInstanceFile

protected abstract java.util.Vector readInstanceFile(java.lang.String type)
                                              throws ObjectStoreException

Throws:

ObjectStoreException

readSerialNumberFile

protected abstract long readSerialNumberFile(java.lang.String name)

writeDataFile

protected abstract void writeDataFile(long id,
                                      Data data)
                               throws ObjectStoreException

Throws:

ObjectStoreException

writeInstanceFile

protected abstract void writeInstanceFile(java.lang.String name,
                                          java.util.Vector instances)
                                   throws ObjectStoreException

Throws:

ObjectStoreException

writeSerialNumberFile

protected abstract void writeSerialNumberFile(java.lang.String name,
                                              long serialNumber)