.. java:import:: java.io IOException

.. java:import:: java.security NoSuchAlgorithmException

.. java:import:: java.util HashSet

.. java:import:: java.util List

.. java:import:: java.util Objects

.. java:import:: java.util Set

.. java:import:: org.apache.shiro SecurityUtils

.. java:import:: org.apache.shiro.authz AuthorizationException

.. java:import:: org.caosdb.server CaosDBException

.. java:import:: org.caosdb.server.database BackendTransaction

.. java:import:: org.caosdb.server.database.access Access

.. java:import:: org.caosdb.server.database.backend.transaction DeleteEntityTransaction

.. java:import:: org.caosdb.server.database.backend.transaction InsertEntityTransaction

.. java:import:: org.caosdb.server.database.backend.transaction RetrieveFullEntityTransaction

.. java:import:: org.caosdb.server.database.backend.transaction UpdateEntityTransaction

.. java:import:: org.caosdb.server.database.misc RollBackHandler

.. java:import:: org.caosdb.server.entity DeleteEntity

.. java:import:: org.caosdb.server.entity EntityID

.. java:import:: org.caosdb.server.entity EntityIdRegistry

.. java:import:: org.caosdb.server.entity EntityInterface

.. java:import:: org.caosdb.server.entity FileProperties

.. java:import:: org.caosdb.server.entity InsertEntity

.. java:import:: org.caosdb.server.entity Message

.. java:import:: org.caosdb.server.entity RetrieveEntity

.. java:import:: org.caosdb.server.entity UpdateEntity

.. java:import:: org.caosdb.server.entity.container TransactionContainer

.. java:import:: org.caosdb.server.entity.container WritableContainer

.. java:import:: org.caosdb.server.entity.wrapper Parent

.. java:import:: org.caosdb.server.entity.wrapper Property

.. java:import:: org.caosdb.server.jobs Job

.. java:import:: org.caosdb.server.jobs Schedule

.. java:import:: org.caosdb.server.permissions EntityACL

.. java:import:: org.caosdb.server.permissions EntityPermission

.. java:import:: org.caosdb.server.permissions Permission

.. java:import:: org.caosdb.server.query Query

.. java:import:: org.caosdb.server.utils EntityStatus

.. java:import:: org.caosdb.server.utils ServerMessages

WriteTransaction
================

.. java:package:: org.caosdb.server.transaction
   :noindex:

.. java:type:: public class WriteTransaction extends Transaction<WritableContainer> implements WriteTransactionInterface

   This class is responsible for inserting, updating and deleting entities which are held in the \ :java:ref:`TransactionContainer`\ .

   This class initializes and runs the \ :java:ref:`Schedule`\  of \ :java:ref:`Job`\ s, calls the \ :java:ref:`BackendTransaction`\ s for each entity, and handles exceptions, roll-back (if necessary) and clean up afterwards.

   :author: Timm Fitschen

Constructors
------------
WriteTransaction
^^^^^^^^^^^^^^^^

.. java:constructor:: public WriteTransaction(WritableContainer container)
   :outertype: WriteTransaction

Methods
-------
checkPermissions
^^^^^^^^^^^^^^^^

.. java:method:: public static void checkPermissions(EntityInterface entity, Set<Permission> permissions)
   :outertype: WriteTransaction

   Check if the user has all permissions

cleanUp
^^^^^^^

.. java:method:: @Override protected final void cleanUp()
   :outertype: WriteTransaction

commit
^^^^^^

.. java:method:: @Override protected void commit() throws Exception
   :outertype: WriteTransaction

deriveUpdate
^^^^^^^^^^^^

.. java:method:: public HashSet<Permission> deriveUpdate(EntityInterface newEntity, EntityInterface oldEntity) throws NoSuchAlgorithmException, IOException, CaosDBException
   :outertype: WriteTransaction

   The entity is set to VALID iff there are no updates to be processed. The entity is set to QUALIFIED otherwise.

   :param newEntity:
   :param oldEntity:
   :throws CaosDBException:
   :throws IOException:
   :throws NoSuchAlgorithmException:

generateId
^^^^^^^^^^

.. java:method:: @Override public String generateId()
   :outertype: WriteTransaction

getSRID
^^^^^^^

.. java:method:: @Override public String getSRID()
   :outertype: WriteTransaction

init
^^^^

.. java:method:: @Override protected void init() throws Exception
   :outertype: WriteTransaction

logHistory
^^^^^^^^^^

.. java:method:: @Override public boolean logHistory()
   :outertype: WriteTransaction

postCheck
^^^^^^^^^

.. java:method:: @Override protected void postCheck()
   :outertype: WriteTransaction

postTransaction
^^^^^^^^^^^^^^^

.. java:method:: @Override protected void postTransaction() throws Exception
   :outertype: WriteTransaction

preCheck
^^^^^^^^

.. java:method:: @Override protected void preCheck() throws InterruptedException, Exception
   :outertype: WriteTransaction

preTransaction
^^^^^^^^^^^^^^

.. java:method:: @Override protected final void preTransaction() throws InterruptedException
   :outertype: WriteTransaction

rollBack
^^^^^^^^

.. java:method:: @Override protected void rollBack()
   :outertype: WriteTransaction

setNoIdIsError
^^^^^^^^^^^^^^

.. java:method:: public void setNoIdIsError(boolean noIdIsError)
   :outertype: WriteTransaction

   Set if it is an error, if an Entity has no ID but just a name upon update.

transaction
^^^^^^^^^^^

.. java:method:: @Override protected void transaction() throws Exception
   :outertype: WriteTransaction