net.sf.dc.db
Class QueryQueue

java.lang.Object
  extended by java.lang.Thread
      extended by net.sf.dc.db.QueryQueue
All Implemented Interfaces:
java.lang.Runnable

public class QueryQueue
extends java.lang.Thread

Query queue with last in last out mechanism. Request for actions depending on the query are past on to the WorkFlow. The queue is in fact a LinkedList

Since:
1.3
Version:
0.50
Author:
Robert-Jan van der Waals

Nested Class Summary
 
Nested classes/interfaces inherited from class java.lang.Thread
java.lang.Thread.State, java.lang.Thread.UncaughtExceptionHandler
 
Field Summary
 
Fields inherited from class java.lang.Thread
MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY
 
Constructor Summary
QueryQueue(java.sql.Connection connection)
          Initializes the queue, it sets the connection and the statement object
 
Method Summary
 void addQuery(Query query)
          Adds a query to the queue (at the last position)
 void run()
          Starts the queue.
 
Methods inherited from class java.lang.Thread
activeCount, checkAccess, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, 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
 

Constructor Detail

QueryQueue

public QueryQueue(java.sql.Connection connection)
Initializes the queue, it sets the connection and the statement object

Parameters:
conn - database connection
Method Detail

addQuery

public void addQuery(Query query)
Adds a query to the queue (at the last position)

Parameters:
query - the query object

run

public void run()
Starts the queue. If the queue is empty the thread is set in sleep mode

Specified by:
run in interface java.lang.Runnable
Overrides:
run in class java.lang.Thread