Deveel.Data.Sql.Triggers.Trigger Class Reference

Represents an event fired at a given modification event (either INSERT, DELETE or UPDATE) at a given time (BEFORE or AFTER). More...

Inheritance diagram for Deveel.Data.Sql.Triggers.Trigger:

Public Member Functions
	Trigger (TriggerInfo triggerInfo)
	Constructs a trigger with the given information. More...
bool	CanInvoke (TableEvent context)
void	Invoke (IQuery context, TableEvent tableEvent)

Properties
TriggerInfo	TriggerInfo [get, private set]
	Gets the information describing the dynamics of this trigger. More...
ObjectName	TriggerName [get]
	Gets the fully qualified name of the trigger, as defined in TriggerInfo More...
TriggerType	TriggerType [get]
	Gets the type of the trigger, as defined in TriggerInfo More...
DbObjectType IDbObject.	ObjectType [get]
ObjectName IDbObject.	FullName [get]
Properties inherited from Deveel.Data.Sql.IDbObject
ObjectName	FullName [get]
	Gets the fully qualified name of the object used to resolve it uniquely within the database. More...
DbObjectType	ObjectType [get]
	Gets the type of database object that the implementation is for More...

Private Member Functions
void	FireTrigger (IQuery context, TableEvent tableEvent)
void	ExecuteProcedure (IQuery context)
void	NotifyTriggerEvent (IQuery context, TableEvent tableEvent)

Detailed Description

Represents an event fired at a given modification event (either INSERT, DELETE or UPDATE) at a given time (BEFORE or AFTER).

Event triggers can be of two different main categories:

• Callback, called for every modification event of the given type on any resource and notified only to the user client
• Procedure, that executes a procedure (either external, internal or defined as the body of the trigger)

Definition at line 38 of file Trigger.cs.

Constructor & Destructor Documentation

Deveel.Data.Sql.Triggers.Trigger.Trigger ( TriggerInfo  triggerInfo )

inline

Constructs a trigger with the given information.

Parameters

triggerInfo

The object defining the information of this trigger.

Exceptions

ArgumentNullException

If the provided triggerInfo is null.

Definition at line 47 of file Trigger.cs.

                                                {
            if (triggerInfo == null)
                throw new ArgumentNullException("triggerInfo");

            TriggerInfo = triggerInfo;
        }

Member Function Documentation

bool Deveel.Data.Sql.Triggers.Trigger.CanInvoke ( TableEvent  context )

inline

Definition at line 106 of file Trigger.cs.

                                                  {
            if ((TriggerInfo.EventType & context.EventType) == 0)
                return false;

            var tableName = context.Table.TableInfo.TableName;
            return TriggerInfo.TableName == null ||
                   TriggerInfo.TableName.Equals(tableName, true);
        }

void Deveel.Data.Sql.Triggers.Trigger.ExecuteProcedure ( IQuery  context )

inlineprivate

Definition at line 93 of file Trigger.cs.

                                                      {
            throw new NotImplementedException();
        }

void Deveel.Data.Sql.Triggers.Trigger.FireTrigger ( IQuery  context, TableEvent  tableEvent  )

inlineprivate

Definition at line 85 of file Trigger.cs.

                                                                        {
            if (TriggerType == TriggerType.Callback) {
                NotifyTriggerEvent(context, tableEvent);
            } else {
                ExecuteProcedure(context);
            }
        }

void Deveel.Data.Sql.Triggers.Trigger.Invoke ( IQuery  context, TableEvent  tableEvent  )

inline

Definition at line 115 of file Trigger.cs.

                                                                  {
            var isBefore = (tableEvent.EventType & TriggerEventType.Before) != 0;

            var transaction = context.Session.Transaction;
            if (transaction is ITableStateHandler) {
                var stateHandler = (ITableStateHandler) transaction;
                var oldState = stateHandler.TableState;
                var newState = new OldNewTableState(tableEvent.Table.FullName, tableEvent.OldRowId.RowNumber, tableEvent.NewRow,
                    isBefore);

                stateHandler.SetTableState(newState);

                try {
                    FireTrigger(context, tableEvent);
                } finally {
                    stateHandler.SetTableState(oldState);
                }
            } else {
                FireTrigger(context, tableEvent);
            }
        }

void Deveel.Data.Sql.Triggers.Trigger.NotifyTriggerEvent ( IQuery  context, TableEvent  tableEvent  )

inlineprivate

Definition at line 97 of file Trigger.cs.

                                                                               {
            var tableName = tableEvent.Table.FullName;
            var eventType = tableEvent.EventType;

            var triggerEvent = new TriggerEvent(context.Session, TriggerName, tableName, eventType, tableEvent.OldRowId,
                tableEvent.NewRow);
            // TODO: context.RegisterEvent(triggerEvent);
        }

Property Documentation

ObjectName IDbObject. Deveel.Data.Sql.Triggers.Trigger.FullName

getprivate

Definition at line 81 of file Trigger.cs.

DbObjectType IDbObject. Deveel.Data.Sql.Triggers.Trigger.ObjectType

getprivate

Definition at line 77 of file Trigger.cs.

TriggerInfo Deveel.Data.Sql.Triggers.Trigger.TriggerInfo

getprivate set

Gets the information describing the dynamics of this trigger.

Definition at line 57 of file Trigger.cs.

ObjectName Deveel.Data.Sql.Triggers.Trigger.TriggerName

get

Gets the fully qualified name of the trigger, as defined in TriggerInfo

See also

TriggerInfo, Triggers.TriggerInfo.TriggerName

Definition at line 64 of file Trigger.cs.

TriggerType Deveel.Data.Sql.Triggers.Trigger.TriggerType

get

Gets the type of the trigger, as defined in TriggerInfo

See also

TriggerInfo, Triggers.TriggerInfo.TriggerType

Definition at line 73 of file Trigger.cs.

---

The documentation for this class was generated from the following file:

• /var/calculate/remote/distfiles/egit-src/deveeldb.git/src/deveeldb/Deveel.Data.Sql.Triggers/Trigger.cs