net.sf.farrago.session.mock
Class MockReposTxnContext

java.lang.Object
  net.sf.farrago.catalog.FarragoReposTxnContext
      net.sf.farrago.session.mock.MockReposTxnContext

public class MockReposTxnContext
extends FarragoReposTxnContext

MockReposTxnContext overrides FarragoReposTxnContext so that no FarragoRepos implementation is needed. Note that this class does not actually create any transaction or lock. See MockSessionStmtValidator.

Since:

Dec 8, 2006

Version:

$Id: //open/dev/farrago/src/net/sf/farrago/session/mock/MockReposTxnContext.java#6 $

Author:

stephan/jack

Field Summary

private boolean	isRead
private boolean	isWrite
private boolean	locked

Constructor Summary

MockReposTxnContext()

Method Summary

void	beginLockedTxn(boolean readOnly) Acquires a repository lock and begins a matching MDR transaction (shared lock for read, or exclusive lock for write).
void	beginReadTxn() Begins a new read-only transaction.
void	beginWriteTxn() Begins a new read/write transaction.
void	commit() Commits the active transaction, if any.
boolean	isReadTxnInProgress()
boolean	isTxnInProgress()
void	rollback() Rolls back the active transaction, if any.
void	unlockAfterTxn() Releases lock acquired by beginLockedTxn.

Methods inherited from class net.sf.farrago.catalog.FarragoReposTxnContext

beginExclusiveAccess, endExclusiveAccess, setReposReadOnly

Methods inherited from class java.lang.Object

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

Field Detail

isRead

private boolean isRead

isWrite

private boolean isWrite

locked

private boolean locked

Constructor Detail

MockReposTxnContext

public MockReposTxnContext()

Method Detail

beginReadTxn

public void beginReadTxn()

Description copied from class: FarragoReposTxnContext

Begins a new read-only transaction.

Overrides:

beginReadTxn in class FarragoReposTxnContext

beginWriteTxn

public void beginWriteTxn()

Description copied from class: FarragoReposTxnContext

Begins a new read/write transaction.

Overrides:

beginWriteTxn in class FarragoReposTxnContext

commit

public void commit()

Description copied from class: FarragoReposTxnContext

Commits the active transaction, if any.

Overrides:

commit in class FarragoReposTxnContext

isReadTxnInProgress

public boolean isReadTxnInProgress()

Overrides:

isReadTxnInProgress in class FarragoReposTxnContext

Returns:

whether a read-only transaction is currently in progress

isTxnInProgress

public boolean isTxnInProgress()

Overrides:

isTxnInProgress in class FarragoReposTxnContext

Returns:

whether a transaction is currently in progress

rollback

public void rollback()

Description copied from class: FarragoReposTxnContext

Rolls back the active transaction, if any.

Overrides:

rollback in class FarragoReposTxnContext

beginLockedTxn

public void beginLockedTxn(boolean readOnly)

Description copied from class: FarragoReposTxnContext

Acquires a repository lock and begins a matching MDR transaction (shared lock for read, or exclusive lock for write). Typical usage is start of SQL statement preparation (e.g. readOnly=true for DML or query, false for DDL).

Overrides:

beginLockedTxn in class FarragoReposTxnContext

Parameters:

readOnly - if true, a shared lock is acquired on the catalog; otherwise, an exclusive lock is acquired

unlockAfterTxn

public void unlockAfterTxn()

Description copied from class: FarragoReposTxnContext

Releases lock acquired by beginLockedTxn. Caller should already have ended transaction with either commit or rollback.

Overrides:

unlockAfterTxn in class FarragoReposTxnContext