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java.lang.Objectorg.apache.jdo.impl.fostore.RequestHandler
org.apache.jdo.impl.fostore.LoginHandler
Handler for LoginRequests.
Nested Class Summary | |
(package private) static interface |
RequestHandler.HandlerFactory
Means by which subclasses are created. |
Field Summary | |
protected FOStoreServerConnection |
con
Connection on which the Request arrived. |
(package private) boolean |
create
a flag to tell whether to create the database |
(package private) java.lang.String |
dbname
the database name |
static RequestHandler.HandlerFactory |
factory
the factory used to create the handler for this request |
protected int |
length
Length of the data in the Request. |
(package private) static org.apache.commons.logging.Log |
logger
Logger |
protected Reply |
reply
Subclasses use this Reply instance to send data back to their corresponding client-side request. |
(package private) byte[] |
secret
a message digest which is a shared secret |
(package private) long |
timestamp
a pseudo random number |
(package private) java.lang.String |
user
the user of the database |
Constructor Summary | |
private |
LoginHandler(Reply reply,
int length,
FOStoreServerConnection con)
Construct an instance of the LoginHandler to service this request. |
Method Summary | |
protected boolean |
getOkToFinish()
The RollbackHandler should override this and return false, so that finishers are not run when we are rolling back. |
(package private) RequestFinisher |
handleRequest()
Process the request by analyzing the database and user login information from the request buffer. |
(package private) static void |
handleRequests(FOStoreServerConnection con)
Handles all requests that can be read at this time from the given connection. |
protected void |
setOkToCommit(boolean okToCommit)
The CommitHandler should override this and save the given value, then use it to determine whether or not to commit. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
java.lang.String dbname
java.lang.String user
long timestamp
byte[] secret
boolean create
public static final RequestHandler.HandlerFactory factory
protected final Reply reply
protected final int length
protected final FOStoreServerConnection con
static final org.apache.commons.logging.Log logger
Constructor Detail |
private LoginHandler(Reply reply, int length, FOStoreServerConnection con)
reply
- the reply for the requestlength
- the length of the requestcon
- the FOStoreServerConnection with the requestMethod Detail |
RequestFinisher handleRequest() throws java.io.IOException, FOStoreDatabaseException
handleRequest
in class RequestHandler
java.io.IOException
- if any problems
FOStoreDatabaseException
protected boolean getOkToFinish()
protected void setOkToCommit(boolean okToCommit)
static void handleRequests(FOStoreServerConnection con)
The data it generates for the client is documented; see ReplyHandler.processReplies(java.io.DataInput, org.apache.jdo.impl.fostore.Message)
.
If after all requests are thusly handled, none have indicated that the second round of handling, called finishing, is not to be done, then performs this second round. The finishers that are invoked are precisely those which were returned from each request's handleRequest invocation, and the finishers have their finish() methods invoked in the same order in which the requests were originally invoked.
Finally, writes the number of replies (at the beginning of the reply data, in a spot that was set aside for this purpose), and sends replies back to the client.
This method is very paranoid about error checking, which clutters it up some, but is necessary to ensure that the server keeps running.
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