com.aspc.locks

Class DBLogicalLockCommand

java.lang.Object

com.aspc.commander.Command

com.aspc.commander.sql.SQLCommand

com.aspc.locks.DBLogicalLockCommand

All Implemented Interfaces:

CommandBuildResultsPlugin

public class DBLogicalLockCommand
extends SQLCommand

obtaining / updating / releasing a logical lock
created to be used in the GWT module
Syntax

  LOGICAL_LOCK 
  [TYPE type OBTAIN globalKey [CURRENT_LOCK_ID current_lock_key] [BREAK_LOCK break_lock]] |
  [RELEASE globalKey]
  

Usage

  /* Obtaining STEALABLE LOCK for the current screen */
  LOGICAL_LOCK STEALABLE OBTAIN globalKey CURRENT_LOCK_ID current_lock_key BREAK_LOCK break_lock
  

THREAD MODE: SINGLE THREADED command

Since:

13/09/2010

Author:

ronit

Field Summary

Fields inherited from class com.aspc.commander.sql.SQLCommand

CURSOR_SIZE

Constructor Summary

Constructors

Constructor and Description
DBLogicalLockCommand(Connection connection, Pattern pattern) constructor

Method Summary

Modifier and Type	Method and Description
protected void	execute(Parser p) execute this command
java.lang.String	getColumnName(int col) the column name
java.lang.String	getColumnType(int col) Gets the column type for the given column index, starting at one
void	getError(DBLogicalLockException lle, MutableDataSource mds, DBLogicalLock currLock)
java.lang.String	getRecordID(int row) the record ID
java.lang.Object	getValue(int row, int col) Get value
void	obtainLock(java.lang.String objKey, DBObject obj, java.lang.String currentLockKey, GlobalKey currLockglobalKey, Login login, Session session, java.lang.String breakLock, java.lang.String lockType, MutableDataSource mds) Obtain lock

Methods inherited from class com.aspc.commander.sql.SQLCommand

appendResult, appendResult, getCursorName, getRecordKey, isExecuteOnly

Methods inherited from class com.aspc.commander.Command

execute, extMakeThreadName, getConnection, getPattern, getRawTitle, getTitle, makeThreadName, recordCall, setTitle

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.aspc.commander.sql.results.CommandBuildResultsPlugin

getRawTitle

Constructor Detail

DBLogicalLockCommand

public DBLogicalLockCommand(Connection connection,
                            Pattern pattern)

constructor

Parameters:

connection - connection

pattern - pattern

Method Detail

execute

protected void execute(Parser p)
                throws java.lang.Exception

execute this command

Specified by:

execute in class Command

Parameters:

p - parser

Throws:

java.lang.Exception - Exception A serious problem

obtainLock

public void obtainLock(java.lang.String objKey,
                       DBObject obj,
                       java.lang.String currentLockKey,
                       GlobalKey currLockglobalKey,
                       Login login,
                       Session session,
                       java.lang.String breakLock,
                       java.lang.String lockType,
                       MutableDataSource mds)
                throws java.lang.Exception

Obtain lock

Parameters:

objKey - objKey

obj - object

currentLockKey - currLockKey

currLockglobalKey - currLock GlobalKey

login - login

session - session

breakLock - lock

lockType - locktype

mds - datasource

Throws:

java.lang.Exception - e

getError

public void getError(DBLogicalLockException lle,
                     MutableDataSource mds,
                     DBLogicalLock currLock)
              throws java.lang.Exception

Parameters:

lle - logicallock exception

mds - Datasource

currLock - currLock

Throws:

java.lang.Exception - e

getColumnName

public java.lang.String getColumnName(int col)

the column name

Parameters:

col - the column

Returns:

the name

getRecordID

public java.lang.String getRecordID(int row)

the record ID

Parameters:

row - the row index

Returns:

the record ID

getColumnType

public java.lang.String getColumnType(int col)

Gets the column type for the given column index, starting at one

Parameters:

col - the column index

Returns:

String the column type

getValue

public java.lang.Object getValue(int row,
                                 int col)
                          throws java.lang.Exception

Get value

Parameters:

row - rowno

col - col

Returns:

object

Throws:

java.lang.Exception - e