com.ptc.windchill.upgrade.blobrewrite
Class BackgroundBlobRewriter

java.lang.Object
  com.ptc.windchill.upgrade.blobrewrite.BackgroundBlobRewriter

All Implemented Interfaces:

ExecutableApp

public class BackgroundBlobRewriter

extends Object

implements ExecutableApp

Reads all instances of all concrete persistables in the model registry, rewriting any blobs or smallblobs whose contains externalizable Java object changed class schema layout when read. This occurs in a schedule queue and runs during early morning hours(in the default WTContext Locale), to reduce conflict with daytime use.

See Also:

queueRewrites()

Nested Class Summary

static class

BackgroundBlobRewriter.Server Accepts lightweight service requests in the MethodServer and delegates the work to static methods on the containing class.

Field Summary

private static String	CLASS_NAME
private static String	CLASSNAME
private static boolean	DEVELOPER_MODE
private static String	QUEUE_REWRITE_BLOBS_SERVER_METHOD_NAME
private static String	RESOURCE
private static String	REWRITE_BLOBS_SERVER_METHOD_NAME
private static String	SERVER_CLASS_NAME

Constructor Summary

BackgroundBlobRewriter()

Method Summary

void	execute(String[] args) Supported API: false
static void	main(String[] args)
static void	queueRewrites() Call this method to queue the task of rewriting all blobs that contain evolvables that change class schema layout when read from the database.

Methods inherited from class java.lang.Object

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

Field Detail

CLASSNAME

private static final String CLASSNAME

DEVELOPER_MODE

private static final boolean DEVELOPER_MODE

RESOURCE

private static final String RESOURCE

CLASS_NAME

private static final String CLASS_NAME

SERVER_CLASS_NAME

private static final String SERVER_CLASS_NAME

QUEUE_REWRITE_BLOBS_SERVER_METHOD_NAME

private static final String QUEUE_REWRITE_BLOBS_SERVER_METHOD_NAME

See Also:

Constant Field Values

REWRITE_BLOBS_SERVER_METHOD_NAME

private static final String REWRITE_BLOBS_SERVER_METHOD_NAME

See Also:

Constant Field Values

Constructor Detail

BackgroundBlobRewriter

public BackgroundBlobRewriter()

Method Detail

execute

public void execute(String[] args)

Description copied from interface: ExecutableApp

Supported API: false

Specified by:

execute in interface ExecutableApp

Parameters:

args -

main

public static void main(String[] args)

queueRewrites

public static void queueRewrites()
                          throws WTException

Call this method to queue the task of rewriting all blobs that contain evolvables that change class schema layout when read from the database. This will create a schedule queue. Rewrites will occur during early morning hours. The default system Administrator will be notified via email upon task completion. Assumptions are:

• Method server is running
• Current session user or user logging in is an Administrator

Throws:

WTException - if one of the assumptions is violated