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org.hsqldb
Class TriggerDef  

java.lang.Object
  java.lang.Thread
      org.hsqldb.TriggerDef

All Implemented Interfaces:

java.lang.Runnable

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class TriggerDef

extends java.lang.Thread

TriggerDef class declaration Definition and execution of triggers Development of the trigger implementation sponsored by Logicscope Realisations Ltd

Version:

1.7.0 (1.0.0.3) Revision History: 1.0.0.1 First release in hsqldb 1.61 1.0.0.2 'nowait' support to prevent deadlock 1.0.0.3 multiple row queue for each trigger

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Nested Class Summary

 

Nested classes inherited from class java.lang.Thread

java.lang.Thread.UncaughtExceptionHandler

 

Field Summary
protected static int	defaultQueueSize
(package private) static int	DELETE_AFTER
(package private) static int	DELETE_AFTER_ROW
(package private) static int	DELETE_BEFORE
(package private) static int	DELETE_BEFORE_ROW
(package private)  java.lang.String	fire
(package private)  boolean	forEachRow
(package private) static int	INSERT_AFTER
(package private) static int	INSERT_AFTER_ROW
(package private) static int	INSERT_BEFORE
(package private) static int	INSERT_BEFORE_ROW
(package private)  int	maxRowsQueued
(package private)  java.lang.String	name
(package private)  boolean	nowait
(package private) static int	NUM_TRIGGER_OPS           member variables
(package private) static int	NUM_TRIGS
(package private)  java.lang.String	operation
protected  org.hsqldb.lib.HsqlDeque	pendingQueue
protected  int	rowsQueued
(package private)  Table	table
(package private)  Trigger	trig
(package private) static int	UPDATE_AFTER
(package private) static int	UPDATE_AFTER_ROW
(package private) static int	UPDATE_BEFORE
(package private) static int	UPDATE_BEFORE_ROW
protected  boolean	valid
(package private)  int	vectorIndx
(package private)  java.lang.String	when

 

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

 

Constructor Summary

TriggerDef(java.lang.String sName, java.lang.String sWhen, java.lang.String sOper, boolean bForEach, Table pTab, Trigger pTrig, java.lang.String sFire, boolean bNowait, int nQueueSize)           Constructor declaration create an object from the components of an SQL CREATE TRIGGER statement

 

Method Summary
static int	getDefaultQueueSize()
boolean	isBusy()           Method declaration
boolean	isValid()           Method declaration
static int	numTrigs()           Method declaration
(package private)  java.lang.Object[]	pop()           pop method declaration
(package private)  void	push(java.lang.Object[] row)           push method declaration
void	run()           run method declaration
int	SqlToIndex()           SqlToIndex method declaration
java.lang.StringBuffer	toBuf()           Method declaration

 

Methods inherited from class java.lang.Thread

activeCount, checkAccess, countStackFrames, currentThread, destroy, dumpStack, enumerate, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

 

Methods inherited from class java.lang.Object

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

 

Field Detail

NUM_TRIGGER_OPS

static final int NUM_TRIGGER_OPS

member variables

See Also:

Constant Field Values

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NUM_TRIGS

static final int NUM_TRIGS

See Also:

Constant Field Values

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INSERT_AFTER

static final int INSERT_AFTER

See Also:

Constant Field Values

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DELETE_AFTER

static final int DELETE_AFTER

See Also:

Constant Field Values

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UPDATE_AFTER

static final int UPDATE_AFTER

See Also:

Constant Field Values

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INSERT_BEFORE

static final int INSERT_BEFORE

See Also:

Constant Field Values

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DELETE_BEFORE

static final int DELETE_BEFORE

See Also:

Constant Field Values

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UPDATE_BEFORE

static final int UPDATE_BEFORE

See Also:

Constant Field Values

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INSERT_AFTER_ROW

static final int INSERT_AFTER_ROW

See Also:

Constant Field Values

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DELETE_AFTER_ROW

static final int DELETE_AFTER_ROW

See Also:

Constant Field Values

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UPDATE_AFTER_ROW

static final int UPDATE_AFTER_ROW

See Also:

Constant Field Values

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INSERT_BEFORE_ROW

static final int INSERT_BEFORE_ROW

See Also:

Constant Field Values

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DELETE_BEFORE_ROW

static final int DELETE_BEFORE_ROW

See Also:

Constant Field Values

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UPDATE_BEFORE_ROW

static final int UPDATE_BEFORE_ROW

See Also:

Constant Field Values

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name

java.lang.String name

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when

java.lang.String when

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operation

java.lang.String operation

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forEachRow

boolean forEachRow

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nowait

boolean nowait

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maxRowsQueued

int maxRowsQueued

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defaultQueueSize

protected static int defaultQueueSize

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table

Table table

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trig

Trigger trig

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fire

java.lang.String fire

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vectorIndx

int vectorIndx

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pendingQueue

protected org.hsqldb.lib.HsqlDeque pendingQueue

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rowsQueued

protected int rowsQueued

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valid

protected boolean valid

Constructor Detail

TriggerDef

public TriggerDef(java.lang.String sName,
                  java.lang.String sWhen,
                  java.lang.String sOper,
                  boolean bForEach,
                  Table pTab,
                  Trigger pTrig,
                  java.lang.String sFire,
                  boolean bNowait,
                  int nQueueSize)

Constructor declaration create an object from the components of an SQL CREATE TRIGGER statement

Method Detail

getDefaultQueueSize

public static int getDefaultQueueSize()

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toBuf

public java.lang.StringBuffer toBuf()

Method declaration

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SqlToIndex

public int SqlToIndex()

SqlToIndex method declaration

Given the SQL creating the trigger, say what the index to the Vector[] is

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run

public void run()

run method declaration

the trigger JSP is run in its own thread here. Its job is simply to wait until it is told by the main thread that it should fire the trigger.

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pop

java.lang.Object[] pop()

pop method declaration

The consumer (trigger) thread waits for an event to be queued

Note: This push/pop pairing assumes a single producer thread and a single consumer thread _only_.

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push

void push(java.lang.Object[] row)

push method declaration

The main thread tells the trigger thread to fire by this call

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numTrigs

public static int numTrigs()

Method declaration

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isBusy

public boolean isBusy()

Method declaration

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isValid

public boolean isValid()

Method declaration

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Home >> All >> org >> [ hsqldb overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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