Package com.gigaspaces.internal.server.storage

Class ViewPropertiesEntryData

java.lang.Object

com.gigaspaces.internal.server.storage.ViewPropertiesEntryData

All Implemented Interfaces:

IEntryData, ServerEntry

Direct Known Subclasses:

MutableViewHybridEntryData

public class ViewPropertiesEntryData
extends Object
implements IEntryData

Helper class for optimizing scanning entry data.

If the data (fixed properties) in an entry data is stored in a packed format, retrieving it more than once is inefficient. This class provides a mutable view of an entry data - when a viewed entry is set it prefetches the data and caches it, using it to server get requests (set requests are illegal). This helps reducing footprint on the actual entry data in cache manager and gc activity when querying the space.

Since:

15.8

Author:

Yechiel, Yael, Niv

Field Summary

Fields

Modifier and Type	Field	Description
protected Map<String,Object>	dynamicProperties
protected IEntryData	entry

Constructor Summary

Constructors

Constructor	Description
ViewPropertiesEntryData()

Method Summary

Modifier and Type	Method	Description
Map<String,Object>	getDynamicProperties()
IEntryData	getEntry()
EntryDataType	getEntryDataType()
EntryTypeDesc	getEntryTypeDesc()
long	getExpirationTime()	Gets the entry expiration time.
Object[]	getFixedPropertiesValues()
Object	getFixedPropertyValue(int position)	Gets the specified fixed property's value.
HybridPropertiesHolder	getPropertiesHolder()
int	getVersion()	Gets the entry version.
boolean	isView()
boolean	isViewOf(IEntryData entryData)
void	setDynamicProperties(Map<String,Object> dynamicProperties)
void	setFixedPropertyValue(int index, Object value)
void	setFixedPropertyValues(Object[] values)
void	view(IEntryData entryData)
void	view(IEntryData entryData, HybridPropertiesHolder holder)

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.gigaspaces.internal.server.storage.IEntryData

getNumOfFixedProperties, getPathValue, getPropertyValue, getSpaceTypeDescriptor, getTimeToLive, isDummyLease, isHybrid, setVersion

Field Details

entry

protected IEntryData entry

dynamicProperties

protected Map<String,Object> dynamicProperties

Constructor Details

ViewPropertiesEntryData

public ViewPropertiesEntryData()

Method Details

view

public void view(IEntryData entryData)

view

public void view(IEntryData entryData,
 HybridPropertiesHolder holder)

getPropertiesHolder

public HybridPropertiesHolder getPropertiesHolder()

getEntryDataType

public EntryDataType getEntryDataType()

Specified by:

getEntryDataType in interface IEntryData

getFixedPropertiesValues

public Object[] getFixedPropertiesValues()

Specified by:

getFixedPropertiesValues in interface IEntryData

getFixedPropertyValue

public Object getFixedPropertyValue(int position)

Description copied from interface: ServerEntry

Gets the specified fixed property's value. The returned value is a reference to the actual property kept in the space.

Specified by:

getFixedPropertyValue in interface ServerEntry

Parameters:

position - Position of requested property.

Returns:

Requested property's value in current entry.

getEntryTypeDesc

public EntryTypeDesc getEntryTypeDesc()

Specified by:

getEntryTypeDesc in interface IEntryData

getVersion

public int getVersion()

Description copied from interface: ServerEntry

Gets the entry version.

Specified by:

getVersion in interface ServerEntry

Returns:

the entry version.

getExpirationTime

public long getExpirationTime()

Description copied from interface: ServerEntry

Gets the entry expiration time.

Specified by:

getExpirationTime in interface ServerEntry

Returns:

the entry expiration time.

isViewOf

public boolean isViewOf(IEntryData entryData)

getDynamicProperties

public Map<String,Object> getDynamicProperties()

Specified by:

getDynamicProperties in interface IEntryData

getEntry

public IEntryData getEntry()

setFixedPropertyValue

public void setFixedPropertyValue(int index,
 Object value)

Specified by:

setFixedPropertyValue in interface IEntryData

setFixedPropertyValues

public void setFixedPropertyValues(Object[] values)

Specified by:

setFixedPropertyValues in interface IEntryData

setDynamicProperties

public void setDynamicProperties(Map<String,Object> dynamicProperties)

Specified by:

setDynamicProperties in interface IEntryData

isView

public boolean isView()

Specified by:

isView in interface IEntryData