com.goldencode.p2j.persist.trigger

Class TriggerData

java.lang.Object

com.goldencode.p2j.persist.trigger.TriggerData

class TriggerData
extends java.lang.Object

This is a container for all information needed for a trigger callback. This class is not mutable, the values passed to constructor can be later obtained using the individual getters.

This class and all his methods are package-protected, so it is not visible outside the trigger package, in fact it can only be accessed by TriggerBlockLayer and DatabaseTriggerManager.

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	generic Flag for generic triggers.
private boolean	newBuffer Flag to indicate if the trigger is dependent upon a buffer.
private boolean	oldBuffer Flag that the trigger needs the old value of the buffer (WRITE only).
private boolean	override Flag for disabling the schema trigger.
private java.lang.Class<? extends DatabaseTrigger>	triggerClass Trigger class that will be instantiated and executed.
private java.lang.Object	triggerContainer The container in which the trigger is declared.

Constructor Summary

Constructors

Constructor and Description
TriggerData(java.lang.Class<? extends DatabaseTrigger> triggerClass, java.lang.Object triggerContainer, boolean override, boolean oldBuffer, boolean newBuffer, boolean generic) Builds an immutable object with data needed for a trigger to instantiate/execute.

Method Summary

Modifier and Type	Method and Description
(package private) java.lang.Class<? extends DatabaseTrigger>	getTriggerClass() Obtain the trigger class.
(package private) java.lang.Object	getTriggerContainer() Obtain the trigger container.
boolean	hasNewBuffer() Check if this trigger has the new value of the buffer as parameter.
(package private) boolean	hasOldBuffer() Check if this trigger additionally need the old value of the buffer.
boolean	isGeneric() Check if this trigger is generic.
(package private) boolean	isOverride() Check if this trigger replaces the schema trigger (if any) or if it executes before.

Methods inherited from class java.lang.Object

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

Field Detail

triggerClass

private final java.lang.Class<? extends DatabaseTrigger> triggerClass

Trigger class that will be instantiated and executed.

newBuffer

private final boolean newBuffer

Flag to indicate if the trigger is dependent upon a buffer. Should be false if is an ASSIGN trigger declared with NEW instead of field.

triggerContainer

private final java.lang.Object triggerContainer

The container in which the trigger is declared.

override

private final boolean override

Flag for disabling the schema trigger.

oldBuffer

private final boolean oldBuffer

Flag that the trigger needs the old value of the buffer (WRITE only).

generic

private final boolean generic

Flag for generic triggers.

Constructor Detail

TriggerData

TriggerData(java.lang.Class<? extends DatabaseTrigger> triggerClass,
            java.lang.Object triggerContainer,
            boolean override,
            boolean oldBuffer,
            boolean newBuffer,
            boolean generic)

Builds an immutable object with data needed for a trigger to instantiate/execute.

Parameters:

triggerClass - The class of the trigger.

triggerContainer - The container of the trigger.

override - Allows to block the schema trigger or execute before it.

oldBuffer - Some triggers need a buffer with old value.

newBuffer - Some triggers do not have a reference to the new buffer.

generic - true if this is a generic trigger.

Method Detail

getTriggerClass

java.lang.Class<? extends DatabaseTrigger> getTriggerClass()

Obtain the trigger class.

Returns:

The trigger class.

getTriggerContainer

java.lang.Object getTriggerContainer()

Obtain the trigger container.

Returns:

The container object of the trigger.

isOverride

boolean isOverride()

Check if this trigger replaces the schema trigger (if any) or if it executes before.

Returns:

The override flag.

hasOldBuffer

boolean hasOldBuffer()

Check if this trigger additionally need the old value of the buffer.

Returns:

true if this trigger additionally need the old value of the buffer.

hasNewBuffer

public boolean hasNewBuffer()

Check if this trigger has the new value of the buffer as parameter.

Returns:

true if this trigger has the new value of the buffer as parameter.

isGeneric

public boolean isGeneric()

Check if this trigger is generic.

Returns:

true if this is a generic trigger.