Package org.apache.openjpa.datacache

Class DataCachePCDataImpl

java.lang.Object

org.apache.openjpa.kernel.AbstractPCData

org.apache.openjpa.kernel.PCDataImpl

org.apache.openjpa.datacache.DataCachePCDataImpl

All Implemented Interfaces:

Serializable, DataCachePCData, PCData

public class DataCachePCDataImpl
extends PCDataImpl
implements DataCachePCData

Specialized PCData implementation for data caching. This implementation is properly synchronized.

Author:

Patrick Linskey

See Also:

• Serialized Form

Field Summary

Fields inherited from class org.apache.openjpa.kernel.AbstractPCData

NULL

Constructor Summary

Constructors

Constructor	Description
DataCachePCDataImpl(Object oid, ClassMetaData meta)
DataCachePCDataImpl(Object oid, ClassMetaData meta, String name)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	clearData(int index)
protected void	clearInverseRelationCache(OpenJPAStateManager sm, FieldMetaData fmd)	Check if this field is in use of "order by" by other field collections in inverse relation.
Object	getData(int index)	Return the data stored in the given field index.
Object	getImplData()	Returns the instance-level impl data, or null if none.
Object	getImplData(int index)
Object	getIntermediate(int index)
long	getTimeOut()	Gets the original timeout of this instance.
Object	getVersion()	Returns the current version object that this data was loaded from.
boolean	isLoaded(int index)	Whether the given field index has stored data.
boolean	isTimedOut()	Whether this data is timed out.
AbstractPCData	newEmbeddedPCData(OpenJPAStateManager sm)	Return a new PCData implementation of the right type for embedded instances.
void	setData(int index, Object val)
void	setImplData(int index, Object val)
void	setImplData(Object val)	Sets the stored instance-level impl data.
void	setIntermediate(int index, Object val)
void	setLoaded(int index, boolean loaded)
void	setVersion(Object version)	Sets the current version object that this data was loaded from.
void	store(OpenJPAStateManager sm)	Store all loaded fields of the state manager.
void	store(OpenJPAStateManager sm, BitSet fields)	Store the given fields from the state manager.
protected void	storeField(OpenJPAStateManager sm, FieldMetaData fmd)	Store field-level information from the given state manager.
protected Object	toData(FieldMetaData fmd, Object val, StoreContext ctx)	Transform the given field value to a data value for caching.
protected Object	toNestedData(ValueMetaData vmd, Object val, StoreContext ctx)	Transform the given nested value to a cachable value.

Methods inherited from class org.apache.openjpa.kernel.PCDataImpl

getCache, getId, getLoaded, getType, load, load, loadField, loadImplData, loadImplData, loadIntermediate, loadVersion, storeImplData, storeImplData, storeIntermediate, storeVersion

Methods inherited from class org.apache.openjpa.kernel.AbstractPCData

toEmbeddedData, toEmbeddedField, toField, toNestedField, toNestedFields, toRelationData, toRelationField, toRelationFields

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.openjpa.kernel.PCData

getCache, getId, getType, load, load

Constructor Details

DataCachePCDataImpl

public DataCachePCDataImpl(Object oid,
 ClassMetaData meta)

DataCachePCDataImpl

public DataCachePCDataImpl(Object oid,
 ClassMetaData meta,
 String name)

Constructor.

Method Details

isTimedOut

public boolean isTimedOut()

Description copied from interface: DataCachePCData

Whether this data is timed out.

Specified by:

isTimedOut in interface DataCachePCData

getTimeOut

public long getTimeOut()

Description copied from interface: DataCachePCData

Gets the original timeout of this instance.

Specified by:

getTimeOut in interface DataCachePCData

Returns:

-1 for no timeout ever.

getData

public Object getData(int index)

Description copied from interface: PCData

Return the data stored in the given field index.

Specified by:

getData in interface PCData

Overrides:

getData in class PCDataImpl

setData

public void setData(int index,
 Object val)

Overrides:

setData in class PCDataImpl

clearData

public void clearData(int index)

Overrides:

clearData in class PCDataImpl

getImplData

public Object getImplData()

Description copied from interface: PCData

Returns the instance-level impl data, or null if none.

Specified by:

getImplData in interface PCData

Overrides:

getImplData in class PCDataImpl

setImplData

public void setImplData(Object val)

Description copied from interface: PCData

Sets the stored instance-level impl data.

Specified by:

setImplData in interface PCData

Overrides:

setImplData in class PCDataImpl

getImplData

public Object getImplData(int index)

Overrides:

getImplData in class PCDataImpl

setImplData

public void setImplData(int index,
 Object val)

Overrides:

setImplData in class PCDataImpl

getIntermediate

public Object getIntermediate(int index)

Overrides:

getIntermediate in class PCDataImpl

setIntermediate

public void setIntermediate(int index,
 Object val)

Overrides:

setIntermediate in class PCDataImpl

isLoaded

public boolean isLoaded(int index)

Description copied from interface: PCData

Whether the given field index has stored data.

Specified by:

isLoaded in interface PCData

Overrides:

isLoaded in class PCDataImpl

setLoaded

public void setLoaded(int index,
 boolean loaded)

Overrides:

setLoaded in class PCDataImpl

getVersion

public Object getVersion()

Description copied from interface: PCData

Returns the current version object that this data was loaded from.

Specified by:

getVersion in interface PCData

Overrides:

getVersion in class PCDataImpl

setVersion

public void setVersion(Object version)

Description copied from interface: PCData

Sets the current version object that this data was loaded from.

Specified by:

setVersion in interface PCData

Overrides:

setVersion in class PCDataImpl

store

public void store(OpenJPAStateManager sm)

Description copied from interface: PCData

Store all loaded fields of the state manager.

Specified by:

store in interface PCData

Overrides:

store in class PCDataImpl

store

public void store(OpenJPAStateManager sm,
 BitSet fields)

Description copied from interface: PCData

Store the given fields from the state manager.

Specified by:

store in interface PCData

Overrides:

store in class PCDataImpl

storeField

protected void storeField(OpenJPAStateManager sm,
 FieldMetaData fmd)

Store field-level information from the given state manager. Special process of checking if the cached collection data is out of order.

Overrides:

storeField in class PCDataImpl

clearInverseRelationCache

protected void clearInverseRelationCache(OpenJPAStateManager sm,
 FieldMetaData fmd)

Check if this field is in use of "order by" by other field collections in inverse relation. If it is, clear the other field cache because it could be out of order.

toData

protected Object toData(FieldMetaData fmd,
 Object val,
 StoreContext ctx)

Description copied from class: AbstractPCData

Transform the given field value to a data value for caching. Return AbstractPCData.NULL if unable to cache.

Overrides:

toData in class AbstractPCData

toNestedData

protected Object toNestedData(ValueMetaData vmd,
 Object val,
 StoreContext ctx)

Description copied from class: AbstractPCData

Transform the given nested value to a cachable value. Return AbstractPCData.NULL if the value cannot be cached.

Overrides:

toNestedData in class AbstractPCData

newEmbeddedPCData

public AbstractPCData newEmbeddedPCData(OpenJPAStateManager sm)

Description copied from class: PCDataImpl

Return a new PCData implementation of the right type for embedded instances. Returns a PCDataImpl by default.

Overrides:

newEmbeddedPCData in class PCDataImpl