lams-github / lams_common / src / java / org / lamsfoundation / lams / learningdesign

Activity.java

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Wednesday 20 Mar 2024
4:56 pm

Marcin Cieslak

LDEV-5440 Update code to match dependencies

In particular javax -> jakarta package change and new JPA not accepting some attributes.

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Monday 15 Jan 2024
11:11 pm

Marcin Cieslak

LDEV-5440 Rewrite config files and library references

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Thursday 07 Oct 2021
4:44 pm

Marcin Cieslak

LDEV-4411 Stop using collection cache for now

Cache annotations were commented out so we can come back to them easily

in the future.

Collection cache is not detecting changes made to entities. When a new

entity is added, collection cache does not see the change.

Properly tweaking concurrency strategy does not seem possible at the

moment, so we just turn it off.

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Monday 27 Sep 2021
3:45 pm

Marcin Cieslak

LDEV-5248, LDEV-4411 Mark some collections as cacheable

Similar to query cache, the collection cache makes sense if the table

which collection elements map to do not change often. Each modification

to table content invalidates the given collection cache.

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Friday 24 Sep 2021
3:50 pm

Marcin Cieslak

LDEV-5248, LDEV-4411 Mark some queries as cacheable

Query cache makes sense if tables which the query reference does not

change often. Each modification to table content invalidates the given

query's cache. Also each set of query parameters is a different cache

entry, so if there are various parameter values the cache overhead can

generate more load than benefit.

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Tuesday 21 Sep 2021
12:34 am

Marcin Cieslak

LDEV-5248, LDEV-4411 Add 2nd level cache to selected elements

Displaying Assessment results is too DB-intense for multiple learners.

We can enable a short-lived query cache for some entities which have

most impact on the results page. This way multiple requests can reuse

same objects from cache and there is little danger of inconsistency.

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Thursday 30 Jul 2020
12:35 pm

Marcin Cieslak

LDEV-5058 Move activity category from DB to authoring front end

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Monday 16 Mar 2020
10:44 pm

Marcin Cieslak

LDEV-4989 Password Gate initial implementation

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Monday 26 Nov 2018
11:23 pm

Marcin Cieslak

LDEV-4696 Make all @ManyToOne and @OneToOne lazy

Hibernate 3 used lazy loading of single-object relationships by default.

JPA's default setting is eager. When loading entities all references are

loaded immediately using JOINs. A large entity, like Learning Design,

can have a query consisting of 25 JOINs. It makes it very slow.

There is no way to change JPA's default behaviour. In order to make JPA

annotations behave like old Hibernate, each of them got an explicit

attribute saying that loading is lazy.

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11:23 pm

Marcin Cieslak

LDEV-4696 Make all @ManyToOne and @OneToOne lazy

Hibernate 3 used lazy loading of single-object relationships by default.

JPA's default setting is eager. When loading entities all references are

loaded immediately using JOINs. A large entity, like Learning Design,

can have a query consisting of 25 JOINs. It makes it very slow.

There is no way to change JPA's default behaviour. In order to make JPA

annotations behave like old Hibernate, each of them got an explicit

attribute saying that loading is lazy.

Options
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Friday 02 Nov 2018
10:32 pm

Marcin Cieslak

LDEV-4696 Rewrite part of Common entities to Hibernate annotations

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Wednesday 11 May 2016
3:30 pm

Marcin Cieslak

LDEV-3776: Remove $Id CVS keyword.

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3:08 pm

Marcin Cieslak

LDEV-3776: Remove $Id CVS keyword.

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Thursday 05 May 2016
4:11 pm

Marcin Cieslak

LDEV-3776: Clean up and format all LAMS Java code.

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4:11 pm

Marcin Cieslak

LDEV-3776: Clean up and format all LAMS Java code.

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Wednesday 16 Mar 2016
8:14 pm

Marcin Cieslak

LDEV-3674: Remove multiple Flash elements: Authoring, icons, themes, i18n files, WDDX libraries and classes, methods, servlets etc. Rename/rewrite methods for Flashless use.

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Monday 23 Nov 2015
7:49 pm

Marcin Cieslak

LDEV-3614: Improve processing of Gate activities. Alter lams_activity_learners table so it reflects its real purpose: storing learners who are allowed to pass a gate. Find out who is waiting in front of a gate using learner progress (activity attempt). For sync gate take into account all possible lesson learners (lesson class) rather than only ones who started a lesson. Use an entity in JSP generation rather than a DTO which is just a wrapper for the entity. Code clean up.

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7:34 pm

Marcin Cieslak

LDEV-3614: Improve processing of Gate activities. Alter lams_activity_learners table so it reflects its real purpose: storing learners who are allowed to pass a gate. Find out who is waiting in front of a gate using learner progress (activity attempt). For sync gate take into account all possible lesson learners (lesson class) rather than only ones who started a lesson. Use an entity in JSP generation rather than a DTO which is just a wrapper for the entity. Code clean up.

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Saturday 21 Jun 2014
1:35 am

Marcin Cieslak

LDEV-3115: Use new FLA SVG images in Monitoring.

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Saturday 18 Jan 2014
6:37 am

Andrey Balan

LDEV-3147 Simplify tools: get rid of instructions tab, define in monitor and offline activity options

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Wednesday 11 Dec 2013
1:07 am

Marcin Cieslak

LDEV-3156: Put back missing methods, removed along with Flash Monitoring. Manually add session cookies to WebConversation if it is not done automatically. Make TestHarness work with Leader and Scratchie tools.

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Tuesday 25 Dec 2012
8:38 pm

Andrey Balan

LDEV-2926 * removed XDoclet tags from Java classes that generate them improperly and thus already possess static .hbm.xml files. * removed static .hbm.xml files in cases when they can be produced using Xdoclet information

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Wednesday 01 Apr 2009
8:21 am

lfoxton

LDEV-2173 Restructuring jqgrid javascript functions and jsps for re-use

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Tuesday 17 Feb 2009
9:51 am

mseaton

LDEV-2127 Fixed floating parallel acts behaviour affect finished - display close window msg.

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Tuesday 13 Jan 2009
3:01 pm

mseaton

LDEV-2074 Improved validation and added floating activities index field to Learning Design (table/class).

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Thursday 08 Jan 2009
1:08 pm

mseaton

LDEV-2074 Implemented the server-side validation for Floating Activities in a saved learning design. Added new validation error messages.

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Wednesday 07 Jan 2009
10:27 am

mseaton

LDEV-2074 Implemented saving Floating Activity(s) in a design. Updated with new activity type (id:15) and new system tool (id:11).

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Wednesday 29 Oct 2008
1:35 pm

Marcin Cieslak

LDEV-1299: Backend for condition gates.

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Thursday 18 Sep 2008
10:30 am

jliew

LDEV-1910 hibernate loses branch_activity_id value when association is uni-directional, make it bi-directional. Putting link in the top level Activity class rather than BranchingActivity because of new work for LDEV-1299 that will allow more types of Activities to be mapped to branch_activity_id in lams_branching_activity_entry

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Tuesday 16 Sep 2008
11:18 am

Marcin Cieslak

LDEV-1299: Added some logic for the new "condition gate" that allows learners to pass depending on condition satisfaction.

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