A function to store a compressed key/data pair into a supplied buffer.

Namespace:  BerkeleyDB
Assembly:  libdb_dotnet48 (in libdb_dotnet48.dll) Version: 4.8.24.0

Syntax

C#
public delegate bool BTreeCompressDelegate(
	DatabaseEntry prevKey,
	DatabaseEntry prevData,
	DatabaseEntry key,
	DatabaseEntry data,
	ref byte[] dest,
	out int size
)
Visual Basic (Declaration)
Public Delegate Function BTreeCompressDelegate ( _
	prevKey As DatabaseEntry, _
	prevData As DatabaseEntry, _
	key As DatabaseEntry, _
	data As DatabaseEntry, _
	ByRef dest As Byte(), _
	<OutAttribute> ByRef size As Integer _
) As Boolean
Visual C++
public delegate bool BTreeCompressDelegate(
	DatabaseEntry^ prevKey, 
	DatabaseEntry^ prevData, 
	DatabaseEntry^ key, 
	DatabaseEntry^ data, 
	array<unsigned char>^% dest, 
	[OutAttribute] int% size
)

Parameters

prevKey
Type: BerkeleyDB..::.DatabaseEntry
The key immediately preceding the application supplied key.
prevData
Type: BerkeleyDB..::.DatabaseEntry
The data associated with prevKey.
key
Type: BerkeleyDB..::.DatabaseEntry
The application supplied key.
data
Type: BerkeleyDB..::.DatabaseEntry
The application supplied data.
dest
Type: array< System..::.Byte >[]()[] %
The compressed data to be stored in the database.
size
Type: System..::.Int32 %
The number of compressed bytes written to dest, or the required size of dest, if too small.

Return Value

True on success, false if dest is too small to contain the compressed data. All other errors should throw an exception.

See Also