Class EntryExtractor

The EntryExtractor is a base abstract class for special purpose custom IValueExtractor implementations.

Inheritance

object

AbstractExtractor

EntryExtractor

Implements

Inherited Members

AbstractExtractor.Target

AbstractExtractor.Extract(object)

AbstractExtractor.Compare(object, object)

AbstractExtractor.CompareEntries(IQueryCacheEntry, IQueryCacheEntry)

AbstractExtractor.ExtractFromEntry(ICacheEntry)

AbstractExtractor.ExtractOriginalFromEntry(CacheEntry)

AbstractExtractor.VALUE

AbstractExtractor.KEY

AbstractExtractor.m_target

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: Tangosol.Util.Extractor

Assembly: Coherence.dll

Syntax

public abstract class EntryExtractor : AbstractExtractor, IValueExtractor, IQueryCacheComparer, IComparer, IPortableObject

Remarks

It allows them to extract a desired value using all available information on the corresponding ICacheEntry object and is intended to be used in advanced custom scenarios, when application code needs to look at both key and value at the same time or can make some very specific assumptions regarding to the implementation details of the underlying Entry object. As of Coherence 3.5, the same behavior can be achieved by subclasses of the AbstractExtractor by overriding the ExtractFromEntry(ICacheEntry).

Constructors

EntryExtractor()

Default constructor (for backward compability)

Declaration

public EntryExtractor()

EntryExtractor(int)

Construct an EntryExtractor based on the entry extraction target.

Declaration

public EntryExtractor(int target)

Parameters

Type	Name	Description
int	target	One of the VALUE or KEY values.

Methods

ReadExternal(IPofReader)

Restore the contents of a user type instance by reading its state using the specified IPofReader object.

Declaration

public virtual void ReadExternal(IPofReader reader)

Parameters

Type	Name	Description
IPofReader	reader	The IPofReader from which to read the object's state.

Exceptions

Type	Condition
IOException	If an I/O error occurs.

WriteExternal(IPofWriter)

Save the contents of a POF user type instance by writing its state using the specified IPofWriter object.

Declaration

public virtual void WriteExternal(IPofWriter writer)

Parameters

Type	Name	Description
IPofWriter	writer	The IPofWriter to which to write the object's state.

Exceptions

Type	Condition
IOException	If an I/O error occurs.

Implements

IValueExtractor

IQueryCacheComparer

IComparer

IPortableObject