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org.apache.gora.persistency.impl
Class StateManagerImpl

java.lang.Object
  org.apache.gora.persistency.impl.StateManagerImpl

All Implemented Interfaces:

StateManager

public class StateManagerImpl
extends Object
implements StateManager

An implementation for the StateManager. This implementation assumes every Persistent object has it's own StateManager.

Field Summary

protected BitSet	dirtyBits
protected boolean	isNew
protected BitSet	readableBits

Constructor Summary

StateManagerImpl()

Method Summary

void	clearDirty(Persistent persistent) Clears the dirty state.
void	clearDirty(Persistent persistent, int fieldIndex) Clears the field as dirty.
void	clearNew(Persistent persistent) Clears the new state
void	clearReadable(Persistent persistent) Clears the readable state.
void	clearReadable(Persistent persistent, int fieldIndex) Clears the field as readable.
boolean	isDirty(Persistent persistent) Returns whether any of the fields of the object has been modified after construction or loading.
boolean	isDirty(Persistent persistent, int fieldIndex) Returns whether the field has been modified.
boolean	isNew(Persistent persistent) Returns whether the object is newly constructed.
boolean	isReadable(Persistent persistent, int fieldIndex) Returns whether the field has been loaded from the datastore.
void	setDirty(Persistent persistent) Sets all the fields of the object as dirty.
void	setDirty(Persistent persistent, int fieldIndex) Sets the field as dirty.
void	setManagedPersistent(Persistent persistent) If one state manager is allocated per persistent object, call this method to set the managed persistent.
void	setNew(Persistent persistent) Sets the state of the object as new for persistency
void	setReadable(Persistent persistent, int fieldIndex) Sets the field as readable.

Methods inherited from class java.lang.Object

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

Field Detail

isNew

protected boolean isNew

dirtyBits

protected BitSet dirtyBits

readableBits

protected BitSet readableBits

Constructor Detail

StateManagerImpl

public StateManagerImpl()

Method Detail

setManagedPersistent

public void setManagedPersistent(Persistent persistent)

Description copied from interface: StateManager

If one state manager is allocated per persistent object, call this method to set the managed persistent.

Specified by:

setManagedPersistent in interface StateManager

Parameters:

persistent - the persistent to manage

isNew

public boolean isNew(Persistent persistent)

Description copied from interface: StateManager

Returns whether the object is newly constructed.

Specified by:

isNew in interface StateManager

Returns:

true if the object is newly constructed, false if retrieved from a datastore.

setNew

public void setNew(Persistent persistent)

Description copied from interface: StateManager

Sets the state of the object as new for persistency

Specified by:

setNew in interface StateManager

clearNew

public void clearNew(Persistent persistent)

Description copied from interface: StateManager

Clears the new state

Specified by:

clearNew in interface StateManager

setDirty

public void setDirty(Persistent persistent,
                     int fieldIndex)

Description copied from interface: StateManager

Sets the field as dirty.

Specified by:

setDirty in interface StateManager

fieldIndex - the offset of the field in the object

isDirty

public boolean isDirty(Persistent persistent,
                       int fieldIndex)

Description copied from interface: StateManager

Returns whether the field has been modified.

Specified by:

isDirty in interface StateManager

fieldIndex - the offset of the field in the object

Returns:

whether the field has been modified.

isDirty

public boolean isDirty(Persistent persistent)

Description copied from interface: StateManager

Returns whether any of the fields of the object has been modified after construction or loading.

Specified by:

isDirty in interface StateManager

Returns:

whether any of the fields of the object has changed

setDirty

public void setDirty(Persistent persistent)

Description copied from interface: StateManager

Sets all the fields of the object as dirty.

Specified by:

setDirty in interface StateManager

clearDirty

public void clearDirty(Persistent persistent,
                       int fieldIndex)

Description copied from interface: StateManager

Clears the field as dirty.

Specified by:

clearDirty in interface StateManager

fieldIndex - the offset of the field in the object

clearDirty

public void clearDirty(Persistent persistent)

Description copied from interface: StateManager

Clears the dirty state.

Specified by:

clearDirty in interface StateManager

setReadable

public void setReadable(Persistent persistent,
                        int fieldIndex)

Description copied from interface: StateManager

Sets the field as readable.

Specified by:

setReadable in interface StateManager

fieldIndex - the offset of the field in the object

isReadable

public boolean isReadable(Persistent persistent,
                          int fieldIndex)

Description copied from interface: StateManager

Returns whether the field has been loaded from the datastore.

Specified by:

isReadable in interface StateManager

fieldIndex - the offset of the field in the object

Returns:

whether the field has been loaded

clearReadable

public void clearReadable(Persistent persistent,
                          int fieldIndex)

Description copied from interface: StateManager

Clears the field as readable.

Specified by:

clearReadable in interface StateManager

fieldIndex - the offset of the field in the object

clearReadable

public void clearReadable(Persistent persistent)

Description copied from interface: StateManager

Clears the readable state.

Specified by:

clearReadable in interface StateManager