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Java Source Code / Java Documentation » J2EE » Jaffa » org.jaffa.persistence

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Class Diagram

Java Document (Java Doc)

org.jaffa.persistence .IPersistent

All known Subclasses:   org.jaffa.persistence .Persistent,
IPersistent
public interface IPersistent extends Cloneable,Serializable(Code)
Interface for all persistent objects.

Method Summary
public int getLocking()
     Returns the locking strategy for this persistent object.
public UOW getUOW()
     Returns the UOW to which this object is associated.
public boolean isDatabaseOccurence()
     Returns a true value if the object was loaded from the database.
public boolean isLocked()
     Returns a true value if the underlying database row is locked.
public boolean isModified()
     Returns a true value if the object had any of its fields updated.
public boolean isModified(String fieldName)
     Returns a true value if the field has been updated.
Parameters:
  fieldName - the field to check.
public boolean isQueued()
     Returns a true value if this object has been added/updated/deleted and not yet been committed.
public void postAdd()
     This method is triggered by the UOW, after adding this object to the Add-Store.
public void postDelete()
     This method is triggered by the UOW, after adding this object to the Delete-Store.
public void postLoad()
     This method is triggered by the UOW after a query loads this object.
public void postUpdate()
     This method is triggered by the UOW, after adding this object to the Update-Store.
public void preAdd()
     This method is triggered by the UOW, before adding this object to the Add-Store, but after a UOW has been associated to the object.
public void preDelete()
     This method is triggered by the UOW, before adding this object to the Delete-Store.
public void preUpdate()
     This method is triggered by the UOW, before adding this object to the Update-Store.
public Object returnInitialValue(String fieldName)
     Returns the initial value for a field; i.e.
public void setDatabaseOccurence(boolean databaseOccurence)
     Set the database status of this object.
public void setLocked(boolean locked)
     Set the locked status of this object.
public void setLocking(int locking)
     Set the locking strategy for this persistent object.
public void setModified(boolean modified)
     Set the modified status of this object.
public void setQueued(boolean queued)
     Set the queued status of this object. The Persistence Engine will set the queued status to true on an Add/Update/Delete.
public void setUOW(UOW uow)
     Associates this object to a UOW.

Method Detail
getLocking
public int getLocking()(Code)
Returns the locking strategy for this persistent object. the locking strategy for this persistent object.

getUOW
public UOW getUOW()(Code)
Returns the UOW to which this object is associated. The UOW

isDatabaseOccurence
public boolean isDatabaseOccurence()(Code)
Returns a true value if the object was loaded from the database. a true value if the object was loaded from the database.

isLocked
public boolean isLocked()(Code)
Returns a true value if the underlying database row is locked. a true value if the underlying database row is locked.

isModified
public boolean isModified()(Code)
Returns a true value if the object had any of its fields updated. a true value if the object had any of its fields updated.

isModified
public boolean isModified(String fieldName)(Code)
Returns a true value if the field has been updated.
Parameters:
  fieldName - the field to check. a true value if the field has been updated.

isQueued
public boolean isQueued()(Code)
Returns a true value if this object has been added/updated/deleted and not yet been committed. a true value if this object has been added/updated/deleted and not yet been committed.

postAdd
public void postAdd() throws PostAddFailedException(Code)
This method is triggered by the UOW, after adding this object to the Add-Store. A concrete persistent object should provide the implementation, if its necessary.
throws:
  PostAddFailedException - if any error occurs during the process.

postDelete
public void postDelete() throws PostDeleteFailedException(Code)
This method is triggered by the UOW, after adding this object to the Delete-Store. A concrete persistent object should provide the implementation, if its necessary.
throws:
  PostDeleteFailedException - if any error occurs during the process.

postLoad
public void postLoad() throws PostLoadFailedException(Code)
This method is triggered by the UOW after a query loads this object. A concrete persistent object should provide the implementation, if its necessary.
throws:
  PostLoadFailedException - if any error occurs during the process.

postUpdate
public void postUpdate() throws PostUpdateFailedException(Code)
This method is triggered by the UOW, after adding this object to the Update-Store. A concrete persistent object should provide the implementation, if its necessary.
throws:
  PostUpdateFailedException - if any error occurs during the process.

preAdd
public void preAdd() throws PreAddFailedException(Code)
This method is triggered by the UOW, before adding this object to the Add-Store, but after a UOW has been associated to the object. A concrete persistent object should provide the implementation, if its necessary.
throws:
  PreAddFailedException - if any error occurs during the process.

preDelete
public void preDelete() throws PreDeleteFailedException(Code)
This method is triggered by the UOW, before adding this object to the Delete-Store. A concrete persistent object should provide the implementation, if its necessary.
throws:
  PreDeleteFailedException - if any error occurs during the process.

preUpdate
public void preUpdate() throws PreUpdateFailedException(Code)
This method is triggered by the UOW, before adding this object to the Update-Store. A concrete persistent object should provide the implementation, if its necessary.
throws:
  PreUpdateFailedException - if any error occurs during the process.

returnInitialValue
public Object returnInitialValue(String fieldName)(Code)
Returns the initial value for a field; i.e. before it was modified. A null will be returned if the field was never modified. Use the isModified() method to determine if the field was modified. A null can also be returned if the field had a null value to begin with.
Parameters:
  fieldName - the field. the initial value for a field; i.e. before it was modified.

setDatabaseOccurence
public void setDatabaseOccurence(boolean databaseOccurence)(Code)
Set the database status of this object. Note: This method is for internal use by the Persistence Engine only.
Parameters:
  databaseOccurence - the database status.

setLocked
public void setLocked(boolean locked)(Code)
Set the locked status of this object. Note: This method is for internal use by the Persistence Engine only.
Parameters:
  locked - the locked status.

setLocking
public void setLocking(int locking)(Code)
Set the locking strategy for this persistent object. Note: This method is for internal use by the Persistence Engine only.
Parameters:
  locking - the locking strategy.

setModified
public void setModified(boolean modified)(Code)
Set the modified status of this object. Note: This method is for internal use by the Persistence Engine only.
Parameters:
  modified - the modified status.

setQueued
public void setQueued(boolean queued)(Code)
Set the queued status of this object. The Persistence Engine will set the queued status to true on an Add/Update/Delete. Thereafter, any updates on this object will throw a RuntimeException. This flag will be reset after the object actaully gets added/updated/deleted to the database. Note: This method is for internal use by the Persistence Engine only.
Parameters:
  queued - the queued status.

setUOW
public void setUOW(UOW uow)(Code)
Associates this object to a UOW. Note: This method is for internal use by the Persistence Engine only.
Parameters:
  uow - The UOW.

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