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

Lesson.java

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Monday 18 Oct 2021
10:42 pm

Marcin Cieslak

LDEV-4411 Allow Hibernate to choose fetch type by itself

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    ./Lesson.java
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.

Options
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    ./Lesson.java
  2. … 29 more files in changeset.
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.

Options
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    • +4
    ./Lesson.java
  2. … 31 more files in changeset.
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.

Options
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    ./Lesson.java
  2. … 96 more files in changeset.
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.

Options
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    ./Lesson.java
  2. … 19 more files in changeset.
Wednesday 22 Jan 2020
4:19 pm

Marcin Cieslak

LDEV-4914 Fall back to default settings values when creating a lesson

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    ./Lesson.java
Saturday 23 Nov 2019
12:21 am

Marcin Cieslak

LDEV-4914 Do not allow NULLs in Lesson settings

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    ./Lesson.java
  2. … 3 more files in changeset.
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.

Options
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    • +1
    ./Lesson.java
  2. … 170 more files in changeset.
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
    • -1
    • +1
    ./Lesson.java
  2. … 170 more files in changeset.
Friday 02 Nov 2018
10:32 pm

Marcin Cieslak

LDEV-4696 Rewrite part of Common entities to Hibernate annotations

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    ./Lesson.java
  2. … 59 more files in changeset.
Tuesday 31 Oct 2017
12:59 am

Marcin Cieslak

LDEV-4453 Add "gradebook on lesson complete" field to Lesson

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    ./Lesson.java
  2. … 8 more files in changeset.
Wednesday 08 Mar 2017
2:26 pm

Marcin Cieslak

LDEV-4261: Remove version properties from entities. Remove management of optimistic locking failures as they never happen.

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    ./Lesson.java
  2. … 9 more files in changeset.
Monday 27 Jun 2016
6:03 pm

Marcin Cieslak

LDEV-3839: Add "allow restart" an advanced option in lesson setup. Add restart button above learner progress bar.

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    ./Lesson.java
  2. … 22 more files in changeset.
Wednesday 11 May 2016
3:08 pm

Marcin Cieslak

LDEV-3776: Remove $Id CVS keyword.

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    ./Lesson.java
  2. … 782 more files in changeset.
Thursday 05 May 2016
4:11 pm

Marcin Cieslak

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

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    ./Lesson.java
  2. … 1860 more files in changeset.
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.

Options
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    ./Lesson.java
  2. … 420 more files in changeset.
Wednesday 24 Feb 2016
8:36 pm

Marcin Cieslak

LDEV-3660: Remove export potfolio resources: Java classes, JPS, DB entries and labels. Remove localLinkPath attribute from CSS tag as it was only used for export portfolio.

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    ./Lesson.java
  2. … 371 more files in changeset.
Monday 27 Jan 2014
9:21 pm

Marcin Cieslak

LDEV-3170: Allow forcing students to restart a lesson every time they enter it.

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    ./Lesson.java
  2. … 7 more files in changeset.
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.

Options
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    ./Lesson.java
  2. … 235 more files in changeset.
Wednesday 12 Jun 2013
12:12 pm

Andrey Balan

LDEV-3052 added lesson status check before opening learner interface

Options
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    ./Lesson.java
  2. … 3 more files in changeset.
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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    ./Lesson.java
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Tuesday 20 Mar 2012
4:51 am

Andrey Balan

LDEV-2829 Lesson intro page

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    ./Lesson.java
  2. … 18 more files in changeset.
Thursday 09 Feb 2012
2:18 am

Marcin Cieslak

SIF-10, LDEV-2782: Remove unused release_date column from lams_lesson.

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    ./Lesson.java
  2. … 2 more files in changeset.
Thursday 26 Jan 2012
2:00 am

Marcin Cieslak

LDEV-2782: Add backend code for conditional release of lessons. Prevent learners from accessing unreleased lessons. Inform learners of unlocked lessons after completing preceding lessons.

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    ./Lesson.java
  2. … 14 more files in changeset.
Tuesday 06 Dec 2011
12:04 am

Andrey Balan

WVI-15 Email Notifications

*merge from lams2_3_release

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    ./Lesson.java
  2. … 32 more files in changeset.
Saturday 03 Dec 2011
3:45 am

Andrey Balan

WVI-14 adding Lesson time limits feature

*merge from lams2_3_release

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    ./Lesson.java
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Wednesday 19 May 2010
7:21 am

lfoxton

SIF-10 Adding date to lesson for release date of marks. So it can be used for sif publisher

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    ./Lesson.java
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Thursday 02 Jul 2009
4:19 pm

jliew

Merge lams2_3 to head (including things not merged last time due to eclipse's merge wizard not handling the lams2_3 start point as expected)

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    ./Lesson.java
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Monday 20 Apr 2009
8:10 am

lfoxton

Merging gradebook lams-common changes with head

LDEV-2213

LDEV-2214

LDEV-2212

LDEV-2207

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    ./Lesson.java
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Thursday 09 Apr 2009
1:05 pm

lfoxton

LDEV-2173 - Putting most of gradebook into its own project for easier maintainence

Database persistence beans and DAO are staying in lams_common

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    ./Lesson.java
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