Interface IDeltaCompressor
The IDeltaCompressor interface provides the capability of comparing two in-memory buffers containing an old and a new value, and producing a result (called a "delta") that can be applied to the old value to create the new value.
Namespace: Tangosol.IO
Assembly: Coherence.dll
Syntax
public interface IDeltaCompressorMethods
ApplyDelta(Binary, Binary)
Apply a delta to an old value in order to create a new value.
Declaration
Binary ApplyDelta(Binary binOld, Binary binDelta)Parameters
| Type | Name | Description |
|---|---|---|
| Binary | binOld | The old value. |
| Binary | binDelta | The delta information returned from ExtractDelta(Binary, Binary) to apply to the old value. |
Returns
| Type | Description |
|---|---|
| Binary | The new value. |
ExtractDelta(Binary, Binary)
Compare an old value to a new value and generate a delta that represents the changes that must be made to the old value in order to transform it into the new value. The generated delta must be a Binary of non-zero length.
If the old value is null, the generated delta must be a "replace", meaning that applying it to any value must produce the specified new value.
Declaration
Binary ExtractDelta(Binary binOld, Binary binNew)Parameters
| Type | Name | Description |
|---|---|---|
| Binary | binOld | The old value. |
| Binary | binNew | The new value; must not be null. |
Returns
| Type | Description |
|---|---|
| Binary | The changes that must be made to the old value in order to transform it into the new value, or null to indicate no change. |