EntryExtractor Class |
14c (14.1.1.0)
F23534-02
The EntryExtractor is a base abstract class for special
purpose custom IValueExtractor implementations.
Inheritance HierarchyNamespace: Tangosol.Util.Extractor
Assembly: Coherence (in Coherence.dll) Version: 14.1.1.14 (14.1.1.14)
SyntaxC#
public abstract class EntryExtractor : AbstractExtractor, IPortableObject
The EntryExtractor type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | EntryExtractor |
Default constructor (for backward compability)
|
| EntryExtractor(Int32) |
Construct an EntryExtractor based on the entry
extraction target.
|
Properties| Name | Description | |
|---|---|---|
 | Target |
The target of the extractor.
(Inherited from AbstractExtractor.) |
Methods| Name | Description | |
|---|---|---|
| Compare |
Compares its two arguments for order.
(Inherited from AbstractExtractor.) |
| CompareEntries |
Compare two entries.
(Inherited from AbstractExtractor.) |
| Equals | Determines whether the specified object is equal to the current object. (Inherited from Object.) |
| Extract |
Extract the value from the passed object.
(Inherited from AbstractExtractor.) |
| ExtractFromEntry |
Extract the value from the passed Entry object. The returned
value should follow the conventions outlined in the
Extract(Object) method.
(Inherited from AbstractExtractor.) |
| ExtractOriginalFromEntry |
Extract the value from the "original value" of the passed
CacheEntry object or the key (if targeted). This method's conventions are exactly the same
as the ExtractFromEntry(ICacheEntry) method.
(Inherited from AbstractExtractor.) |
 | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
| GetHashCode | Serves as the default hash function. (Inherited from Object.) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
| ReadExternal |
Restore the contents of a user type instance by reading its state
using the specified IPofReader object.
|
| ToString | Returns a string that represents the current object. (Inherited from Object.) |
| WriteExternal |
Save the contents of a POF user type instance by writing its
state using the specified IPofWriter object.
|
Fields| Name | Description | |
|---|---|---|
 | m_target |
Specifies which part of the entry should be used by the
ExtractFromEntry(ICacheEntry) operation. Legal values are
VALUE (default) or KEY.
(Inherited from AbstractExtractor.) |
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).
See Also