[top] / transaction / interfaces / IDataManager
Objects that manage transactional storage.
These objects may manage data for other objects, or they may manage non-object storages, such as relational databases. For example, a ZODB.Connection.
Note that when some data is modified, that data's data manager should join a transaction so that data can be committed when the user commits the transaction.
transaction_manager
(Attribute)
The transaction manager (TM) used by this data manager.
This is a public attribute, intended for read-only use. The value is an instance of ITransactionManager, typically set by the data manager's constructor.
* = required
tpc_finish(transaction)
Indicate confirmation that the transaction is done.
Make all changes to objects modified by this transaction persist.
transaction is the ITransaction instance associated with the transaction being committed.
This should never fail. If this raises an exception, the database is not expected to maintain consistency; it's a serious error.
sortKey()
Return a key to use for ordering registered DataManagers.
ZODB uses a global sort order to prevent deadlock when it commits transactions involving multiple resource managers. The resource manager must define a sortKey() method that provides a global ordering for resource managers.
tpc_abort(transaction)
Abort a transaction.
This is called by a transaction manager to end a two-phase commit on the data manager. Abandon all changes to objects modified by this transaction.
transaction is the ITransaction instance associated with the transaction being committed.
This should never fail.
abort(transaction)
Abort a transaction and forget all changes.
Abort must be called outside of a two-phase commit.
Abort is called by the transaction manager to abort transactions that are not yet in a two-phase commit.
tpc_begin(transaction)
Begin commit of a transaction, starting the two-phase commit.
transaction is the ITransaction instance associated with the transaction being committed.
commit(transaction)
Commit modifications to registered objects.
Save changes to be made persistent if the transaction commits (if tpc_finish is called later). If tpc_abort is called later, changes must not persist.
This includes conflict detection and handling. If no conflicts or errors occur, the data manager should be prepared to make the changes persist when tpc_finish is called.
tpc_vote(transaction)
Verify that a data manager can commit the transaction.
This is the last chance for a data manager to vote no
. A
data manager votes no
by raising an exception.
transaction is the ITransaction instance associated with the transaction being committed.
There are no specific adapters registered for this interface.
There are no extended adapters registered for this interface.
zope.viewlet.metaconfigure.JavaScriptViewlet
(name: boston.js)
zope.viewlet.manager.<ViewletManager providing IJavaScript>
(name: zope.app.boston.IJavaScript)
zope.viewlet.viewlet.SimpleViewletClass from /opt/zope/sr/apidoc/src/zope/app/boston/viewlets/toolbar/viewlet.pt
(name: toolbar)
zope.traversing.namespace.lang
(name: lang)
zope.viewlet.manager.<ViewletManager providing ICSS>
(name: zope.app.boston.ICSS)
zope.traversing.namespace.acquire
(name: acquire)
zope.traversing.namespace.acquire
(name: acquire)
zope.traversing.namespace.acquire
(name: acquire)
zope.traversing.namespace.acquire
(name: acquire)
zope.app.apidoc.codemodule.browser.introspector.annotationsNamespace
(name: annotations)
zope.app.apidoc.codemodule.browser.introspector.annotationsNamespace
(name: annotations)
zope.app.apidoc.codemodule.browser.introspector.annotationsNamespace
(name: annotations)
zope.app.apidoc.codemodule.browser.introspector.annotationsNamespace
(name: annotations)
zope.viewlet.metaconfigure.CSSViewlet
(name: xmltree.css)
zope.app.pagetemplate.urlquote.URLQuote
(name: url)
zope.viewlet.viewlet.SimpleViewletClass from /opt/zope/sr/apidoc/src/zope/app/boston/viewlets/xmltree/xmltree.pt
(name: xmltree)
zope.viewlet.metaconfigure.CSSViewlet
(name: skin.css)
zope.app.preference.preference.preferencesNamespace
(name: preferences)
zope.app.preference.default.DefaultPreferences
(name: preferences)
zope.traversing.namespace.attr
(name: attribute)
zope.traversing.namespace.attr
(name: attribute)
zope.traversing.namespace.attr
(name: attribute)
zope.traversing.namespace.attr
(name: attribute)
zope.viewlet.manager.<ViewletManager providing IHead>
(name: zope.app.boston.IHead)
zope.app.component.back35.RegistrationManagerNamespace
(name: registrations)
zope.viewlet.manager.<ViewletManager providing ILeft>
(name: zope.app.boston.ILeft)
zope.traversing.namespace.resource
(name: resource)
zope.traversing.namespace.resource
(name: resource)
zope.traversing.namespace.resource
(name: resource)
zope.traversing.namespace.resource
(name: resource)
zope.traversing.namespace.etc
(name: etc)
zope.traversing.namespace.etc
(name: etc)
zope.traversing.namespace.etc
(name: etc)
zope.traversing.namespace.etc
(name: etc)
zope.traversing.namespace.etc
(name: etc)
zope.app.apidoc.apidoc.apidocNamespace
(name: apidoc)
zope.app.apidoc.apidoc.apidocNamespace
(name: apidoc)
zope.app.apidoc.apidoc.apidocNamespace
(name: apidoc)
zope.app.apidoc.apidoc.apidocNamespace
(name: apidoc)
zope.traversing.namespace.acquire
(name: acquire)
zope.traversing.namespace.lang
(name: lang)
zope.traversing.namespace.lang
(name: lang)
zope.traversing.namespace.lang
(name: lang)
zope.traversing.namespace.lang
(name: lang)
zope.traversing.namespace.item
(name: item)
zope.traversing.namespace.item
(name: item)
zope.traversing.namespace.item
(name: item)
zope.traversing.namespace.item
(name: item)
zope.traversing.namespace.item
(name: item)
zope.viewlet.metaconfigure.JavaScriptViewlet
(name: xmltree)
zope.viewlet.metaconfigure.CSSViewlet
(name: toolbar-css)
zope.traversing.namespace.adapter
(name: adapter)
zope.app.apidoc.apidoc.apidocNamespace
(name: apidoc)
zope.traversing.namespace.vh
(name: vh)
zope.traversing.namespace.vh
(name: vh)
zope.traversing.namespace.vh
(name: vh)
zope.traversing.namespace.vh
(name: vh)
zope.app.onlinehelp.helpNamespace
(name: help)
zope.app.onlinehelp.helpNamespace
(name: help)
zope.app.onlinehelp.helpNamespace
(name: help)
zope.app.onlinehelp.helpNamespace
(name: help)
zope.app.onlinehelp.helpNamespace
(name: help)
zope.traversing.namespace.adapter
(name: adapter)
zope.traversing.namespace.adapter
(name: adapter)
zope.traversing.namespace.adapter
(name: adapter)
zope.traversing.namespace.adapter
(name: adapter)
zope.traversing.namespace.debug
(name: debug)
zope.traversing.namespace.debug
(name: debug)
zope.traversing.namespace.debug
(name: debug)
zope.traversing.namespace.debug
(name: debug)
zope.app.pagetemplate.talesapi.ZopeTalesAPI
(name: zope)
zope.traversing.namespace.attr
(name: attribute)
zope.app.preference.preference.preferencesNamespace
(name: preferences)
zope.app.preference.preference.preferencesNamespace
(name: preferences)
zope.app.preference.preference.preferencesNamespace
(name: preferences)
zope.app.preference.preference.preferencesNamespace
(name: preferences)
zope.app.apidoc.codemodule.browser.introspector.annotationsNamespace
(name: annotations)
zope.traversing.namespace.view
(name: view)
zope.traversing.namespace.view
(name: view)
zope.traversing.namespace.view
(name: view)
zope.traversing.namespace.view
(name: view)
zope.formlib.namedtemplate.NamedTemplatePathAdapter
(name: template)
zope.viewlet.manager.<ViewletManager providing IToolBar>
(name: zope.app.boston.IToolBar)
zope.viewlet.metaconfigure.CSSViewlet
(name: widget.css)
There are no views available.
There are no views available.
There are no views available.
There are no views available.
There are no views available.
There are no views available.
There are no views available.
There are no views available.
There are no views available.
There are no views available.
There are no views available.
There are no views available.