org.apache.jackrabbit.mongomk.impl.command

Class CommitCommand

java.lang.Object

org.apache.jackrabbit.mongomk.impl.command.BaseCommand<Long>

org.apache.jackrabbit.mongomk.impl.command.CommitCommand

All Implemented Interfaces:

Command<Long>

public class CommitCommand
extends BaseCommand<Long>

Command for MongoMicroKernel#commit(String, String, String, String)

Field Summary

Fields inherited from class org.apache.jackrabbit.mongomk.impl.command.BaseCommand

nodeStore

Constructor Summary

Constructors

Constructor and Description
CommitCommand(MongoNodeStore nodeStore, Commit commit) Constructs a new CommitCommandMongo.

Method Summary

Methods

Modifier and Type	Method and Description
Long	execute() Executes the Command and returns its result.
int	getNumOfRetries() Returns the number of retries this Command should be retried in case of an error or false result.
boolean	needsRetry(Exception e) Will be called in case of an Exception during the execution and a given number of retries which has not exceeded.
protected boolean	saveAndSetHeadRevision() Protected for testing purposed only.

Methods inherited from class org.apache.jackrabbit.mongomk.impl.command.BaseCommand

needsRetry

Methods inherited from class java.lang.Object

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

Constructor Detail

CommitCommand

public CommitCommand(MongoNodeStore nodeStore,
             Commit commit)

Constructs a new CommitCommandMongo.

Parameters:

nodeStore - Node store.

commit - Commit

Method Detail

execute

public Long execute()
             throws Exception

Description copied from interface: Command

Executes the Command and returns its result.

Returns:

The result.

Throws:

Exception - If an error occurred while executing.

getNumOfRetries

public int getNumOfRetries()

Description copied from interface: Command

Returns the number of retries this Command should be retried in case of an error or false result.

The number of reties is evaluated in the following way:

n < 0: Unlimited retries n = 0: No retries (just one execution) n > 0: Corresponding number of retries

In order to determine whether the Command should be retired on Command.needsRetry(Exception) or Command.needsRetry(Object) will be called.

Specified by:

getNumOfRetries in interface Command<Long>

Overrides:

getNumOfRetries in class BaseCommand<Long>

Returns:

The number of retries.

See Also:

Command.needsRetry(Exception), Command.needsRetry(Object)

needsRetry

public boolean needsRetry(Exception e)

Description copied from interface: Command

Will be called in case of an Exception during the execution and a given number of retries which has not exceeded.

Specified by:

needsRetry in interface Command<Long>

Overrides:

needsRetry in class BaseCommand<Long>

Parameters:

e - The Exception which was thrown.

Returns:

true if a retry should be performed, else false.

saveAndSetHeadRevision

protected boolean saveAndSetHeadRevision()
                                  throws Exception

Protected for testing purposed only.

Returns:

True if the operation was successful.

Throws:

Exception - If an exception happens.