The HashDatabaseConfig type exposes the following members.

Constructors

  NameDescription
HashDatabaseConfig
Instantiate a new HashDatabaseConfig object

Methods

  NameDescription
Equals
Determines whether the specified Object is equal to the current Object.
(Inherited from Object.)
GetHashCode
Serves as a hash function for a particular type.
(Inherited from Object.)
GetType
Gets the Type of the current instance.
(Inherited from Object.)
SetEncryption
Set the password and algorithm used by the Berkeley DB library to perform encryption and decryption.
(Inherited from DatabaseConfig.)
SetPartitionByCallback
Enable database partitioning using the specified number of partitions and partition function. Return true if the specified number of partitions are successfully enabled; otherwise return false. The number of partitions to createThe name of partitioning function
SetPartitionByKeys
Enable database partitioning using the specified partition keys. Return true if partitioning is successfully enabled; otherwise return false. An array of DatabaseEntry where each array entry defines the range of key values to be stored in each partition
ToString
Returns a String that represents the current Object.
(Inherited from Object.)

Fields

  NameDescription
AutoCommit
Enclose the open call within a transaction. If the call succeeds, the open operation will be recoverable and all subsequent database modification operations based on this handle will be transactionally protected. If the call fails, no database will have been created.
(Inherited from DatabaseConfig.)
BlobDir
The path of the directory where blobs are stored.

If the database is opened within DatabaseEnvironment, this path setting will be ignored during Open(String, HashDatabaseConfig). Use BlobDir to identify the current storage location of blobs after opening the database.

ByteOrder
The byte order for integers in the stored database metadata. The host byte order of the machine where the Berkeley DB library was compiled is the default value.
(Inherited from DatabaseConfig.)
CacheSize
The size of the shared memory buffer pool (the cache).
(Inherited from DatabaseConfig.)
Creation
The policy for how to handle database creation.
DoChecksum
If true, do checksum verification of pages read into the cache from the backing filestore.
(Inherited from DatabaseConfig.)
DuplicateCompare
The duplicate data item comparison function.
Duplicates
Policy for duplicate data items in the database; that is, insertion when the key of the key/data pair being inserted already exists in the database will be successful.
Env
The Berkeley DB environment within which to create a database. If null, the database will be created stand-alone; that is, it is not part of any Berkeley DB environment.
(Inherited from DatabaseConfig.)
ErrorFeedback
The mechanism for reporting error messages to the application.
(Inherited from DatabaseConfig.)
ErrorPrefix
The prefix string that appears before error messages issued by Berkeley DB.
(Inherited from DatabaseConfig.)
Feedback
(Inherited from DatabaseConfig.)
FreeThreaded
Causes the database object to be free-threaded; that is, concurrently usable by multiple threads in the address space.
(Inherited from DatabaseConfig.)
HashComparison
The Hash key comparison function.
HashFunction
A user-defined hash function; if no hash function is specified, a default hash function is used.
NoMMap
Do not map this database into process memory.
(Inherited from DatabaseConfig.)
NonDurableTxns
If true, Berkeley DB will not write log records for this database.
(Inherited from DatabaseConfig.)
NoWaitDbExclusiveLock
Configuration of BaseDatabase handle to obtain a write lock on the entire database.
(Inherited from DatabaseConfig.)
Priority
The cache priority for pages referenced by the database.
(Inherited from DatabaseConfig.)
ReadOnly
Open the database for reading only. Any attempt to modify items in the database will fail, regardless of the actual permissions of any underlying files.
(Inherited from DatabaseConfig.)
ReadUncommitted
Support transactional read operations with degree 1 isolation.
(Inherited from DatabaseConfig.)
Truncate
Physically truncate the underlying file, discarding all previous databases it might have held.
(Inherited from DatabaseConfig.)
UseMVCC
Open the database with support for multiversion concurrency control.
(Inherited from DatabaseConfig.)

Properties

  NameDescription
BlobThreshold
The size in bytes which is used to determine when a data item will be stored as a blob.

Any data item that is equal to or larger in size than the threshold value will automatically be stored as a blob.

If the threshold value is 0, blobs will never be used by the database.

It is illegal to enable blob in the database which is configured as in-memory database or with chksum, encryption, duplicates, sorted duplicates, compression, multiversion concurrency control and transactional read operations with degree 1 isolation.

EncryptAlgorithm
The algorithm used to perform encryption and decryption.
(Inherited from DatabaseConfig.)
Encrypted
Encrypt the database using the cryptographic password specified by DatabaseConfig.SetEncryption or DatabaseEnvironmentConfig.SetEncryption.
(Inherited from DatabaseConfig.)
EncryptionPassword
The password used to perform encryption and decryption.
(Inherited from DatabaseConfig.)
FillFactor
The desired density within the hash table. If no value is specified, the fill factor will be selected dynamically as pages are filled.
NParts
Return the number of partitions to create.
PageSize
The size of the pages used to hold items in the database, in bytes.
(Inherited from DatabaseConfig.)
Partition
Return the application-specified partitioning function.
PartitionKeys
Return an array of type DatabaseEntry where each array entry contains the range of keys contained in one of the database's partitions. The array contains the information for the entire database.
TableSize
An estimate of the final size of the hash table.

See Also