com.mongodb

Class DBApiLayer

java.lang.Object

com.mongodb.DB

com.mongodb.DBApiLayer

public class DBApiLayer
extends DB

Database API This cannot be directly instantiated, but the functions are available through instances of Mongo.

Field Summary

Fields inherited from class com.mongodb.DB

_readOnly

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	DBApiLayer(Mongo mongo, String name, DBConnector connector)

Method Summary

Methods

Modifier and Type	Method and Description
void	cleanCursors(boolean force)
protected com.mongodb.DBApiLayer.MyCollection	doGetCollection(String name) Returns the collection represented by the string <dbName>.<collectionName>.
void	requestDone() ends the current "consistent request"
void	requestEnsureConnection() ensure that a connection is assigned to the current "consistent request" (from primary pool, if connected to a replica set)
void	requestStart() starts a new "consistent request".

Methods inherited from class com.mongodb.DB

addOption, addUser, addUser, authenticate, authenticateCommand, collectionExists, command, command, command, command, command, command, command, command, createCollection, doEval, dropDatabase, eval, forceError, getCollection, getCollectionFromString, getCollectionNames, getLastError, getLastError, getLastError, getMongo, getName, getOptions, getPreviousError, getReadPreference, getSisterDB, getStats, getWriteConcern, isAuthenticated, removeUser, resetError, resetOptions, setOptions, setReadOnly, setReadPreference, setWriteConcern, slaveOk, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

DBApiLayer

protected DBApiLayer(Mongo mongo,
          String name,
          DBConnector connector)

Parameters:

mongo - the Mongo instance

name - the database name

connector - the connector

Method Detail

requestStart

public void requestStart()

Description copied from class: DB

starts a new "consistent request". Following this call and until requestDone() is called, all db operations should use the same underlying connection. This is useful to ensure that operations happen in a certain order with predictable results.

Specified by:

requestStart in class DB

requestDone

public void requestDone()

Description copied from class: DB

ends the current "consistent request"

Specified by:

requestDone in class DB

requestEnsureConnection

public void requestEnsureConnection()

Description copied from class: DB

ensure that a connection is assigned to the current "consistent request" (from primary pool, if connected to a replica set)

Specified by:

requestEnsureConnection in class DB

doGetCollection

protected com.mongodb.DBApiLayer.MyCollection doGetCollection(String name)

Description copied from class: DB

Returns the collection represented by the string <dbName>.<collectionName>.

Specified by:

doGetCollection in class DB

Parameters:

name - the name of the collection

Returns:

the collection

cleanCursors

public void cleanCursors(boolean force)

Specified by:

cleanCursors in class DB

Parameters:

force - true if should clean regardless of number of dead cursors

Throws:

MongoException