Red Samurai Oracle JET Mobile Hybrid App Live on Android

We have implemented Oracle JET mobile hybrid app in less than 30 minutes and deployed it to Android device. This was done as a demo to the customer and could prove Oracle JET offers effective approach for hybrid mobile app development. Development process isn't much complicated with JET once you familiarize yourself with JavaScript development process and learn how to interact with REST services.

Red Samurai app based on JET (using out of the box (more...)

Go Mobile with Oracle JET As Easy As 1 2 3

Oracle JET allows to build and run mobile hybrid applications. It is using Cordova to run on mobile device and provide access to device services. This is cool and what is great about it - it allows to get you started with mobile development in minutes. Besides all this - it is free.

I will describe steps I followed, to generate JET mobile hybrid app and run it in local browser (in the next posts (more...)

ADF BC Range Paging and ADF UI Table Pagination Use Case

ADF UI table pagination and ADF BC range paging sounds like a perfect combination. But to make it work perfect, a bit of extra effort is required. In the case of search/edit implementation, it can't remember updated record when navigating back to search screen (VO runs with Range Paging and UI table is displayed with pagination). I will explain how to solve it and show how to keep UI table displaying current page and prevent (more...)

Using the Oracle JET QuickStart Template

I will show in the post, how you can create single page applications with multiple modules in Oracle JET. As a starting point, you should use the Oracle JET QuickStart template, read about it here. This template comes with sample structure and you could follow it to split application functionality into different groups.

Download sample application, which is based on Oracle JET QuickStart template - JETCRUDApp_v10.zip (you must run ADF BC REST application in (more...)

How To Control Row Removal in ADF BC

There is a flaw in ADF BC remove operation. Row could be successfully removed in ADF BC - it dissapears from UI as well, but if there is DB integrity constraint violation - row is not removed in DB and error message is displayed to the user. This could be misleading to the user, he sees message about failed removal, but at the same time row is not present anymore.

Easier to explain with example. (more...)

UKOUG Slides – Forms, ADF and JET a Non-Aggression Pact

Florin Marcus was presenting topic on Forms modernization during UKOUG Development SIG seminar in London. Session was based on our production experience from recent Forms modernization project to ADF 12c and Alta UI.

Highlights:

- Who integrates Forms and ADF?

- Java Plugin to be Discontinued. Consequences for Oracle Forms.

- Why Yet Another Web Framework? Oracle JET.

- Forms and ADF and JET - Business Integration Patterns

- Forms Developer's perspective: life after learning (more...)

Oracle JET Executing Dynamic ADF BC REST URL

I'm going to explain how to call ADF BC REST service from JET API and how to control parameters passed through to REST URL. Most of the time, REST should return data based on different parameter values, URL is not static. I will be exploring two cases - search functionality, where parameter value is entered by the user and LOV functionality, where current employee key is submitted to fetch colleagues list.

You can go through (more...)

Oracle JET Handling ADF BC 12.2.1 REST Validation Event

I already had a post about how to handle ADF BC validation messages in Oracle JET - Handling ADF BC 12.2.1 REST Validation in Oracle JET. There is an improvement I would like to share. JET submits data to ADF BC REST and there happens validation. In JET perspective data is correct, however it may fail validation in ADF BC and we need to reset values back to original in JET. Previously I (more...)

Oracle JET Master-Detail with ADF BC REST

One of the most typical use cases in enterprise applications - Master-Detail relationship implementation. I have decided to implement it in JET and to share this practical implementation with you. Hopefully it will be useful, when you will be learning and building JET applications.

Sample application - JETCRUDApp_v8.zip implements a table with row selection in JET (you must run ADF BC REST application in JDEV 12.2.1 and JET in NetBeans 8). On (more...)

We are Hiring – Red Samurai ADF and JET Team

Do you want to join Red Samurai force and become one of our technical experts? The moment is now - we are looking for additional team player.

You should be strong in ADF, highly preferable to be confident with JavaScript and Oracle JET. It never hurts to be fluent in PL/SQL and understand Oracle Forms. You will work in Red Samurai projects focused on ADF and JET.

What would be your position? You name it (more...)

ADF Hidden Gem – Export Collection Listener

How many times you complained about ADF export collection listener generated output? There are two options for the output - CSV and excelHTML. Both of them are not really Excel friendly (Excel complains, each time when such file is opened) and produced output lacks formatting. Luckily there is a way to specify custom formatter for ADF export collection listener and set your own output type. In this way we can produce better and customized output (more...)

Oracle JET Input Search with ADF BC REST

LOV is popular component in ADF, it allows to seach for data entry in the list, select it and assign to the attribute. I was researching, how similar concept can be implemented in Oracle JET, based on data from ADF BC REST service. JET Input Search component seems to be useful for LOV like behavior implementation.

Job ID field is implemented with Input Search. It is based on value/label pair, user enters label and in (more...)

Oracle JET 2.0.1 – Upgrade for CRUD Sample

Oracle JET 2.0.1 was released in April and I decided to upgrade my CRUD sample (based on ADF BC REST services) implemented with previous JET version. There is migration guide, describing main points to consider, while moving to the next JET version. I'm going to add few more points. Hopefully you will find it useful.

Here is CRUD sample UI running with Oracle JET 2.0.1 and interacting with ADF BC (more...)

Red Samurai ADF Performance Audit Tool Major Update v 5.0

Our ADF performance audit tool is growing and getting more advanced with each release. Current major update v 5.0 brings ADF Click History integration and allows to track ADF UI client request time. This allows to understand, how long it takes to execute action from user perspective. Combined with ADF BC performance monitoring, we could give precise answer about performance bottlenecks from top to bottom.

New features in v 5.0:

1. Redesigned (more...)

Optimize ADF HTTP Response Size with ChangeEventPolicy

You should read this post, if you are looking how to reduce ADF HTTP response size. This can be important for ADF application performance tuning, to improve PPR request response time. By default in ADF 12.2.1, iterator is assigned with ChangeEventPolicy = ppr. This works great for UI component bindings refresh, no need to set individual partial triggers. On other side, this generates extra content in ADF HTTP response and eventually increases response (more...)

ADF 12c Custom Property Groovy and AllowUntrustedScriptAccess Annotation

To execute Groovy expression in ADF 12c (to call Java method from Groovy), you must specify trusted mode. Read more about it in my previous post - ADF BC 12c New Feature - Entity-Level Triggers. Setting mode to trusted, works in most of the cases. It doesn't work if we want to execute Groovy expression (calling Java method in ViewRow or Entity class) for custom property. In a case of custom property and Groovy calling (more...)

Monitoring ADF 12c Client Request Time with Click History

You must be excited to read this post, I will describe one very useful feature, available in ADF 12c. This feature - Click History. You can follow steps described by Duncan Mills, to enable and read click history data in server log. There is one more option available - we can read click history data from ADF request (captured by filter class) and log it in custom way (for later analysis). Click history gives such (more...)

ADF BC View Criteria Query Execution Mode = Both

View Criteria is set to execute in Database mode by default. There is option to change execution mode to Both. This would execute query and fetch results from database and from memory.  Such query execution is useful, when we want to include newly created (but not commited yet) row into View Criteria result. Newly created row will be included into View Criteria resultset.

Download sample application - ViewCriteriaModeApp.zip. JobsView in sample application is set (more...)

Change ADF BC Data Update Locking with FOR UPDATE WAIT

Each time when data is changed and updated through ADF BC, before posting changes to DB, SQL query with FOR UPDATE NOWAIT is generated and executed. In case if other process locks row to be updated, or another user in the same moment is updating it, error will be generated and update will be stopped. There might be use cases, when you would like to wait for certain period of time, until row will be (more...)

ADF BC Version Number and Change Indicator to Track Changed Rows

One of the common use cases in enteprise applications is to track concurrent user changes. There are two types of changes possible - when two real users are changing data in the same row, or when single user is changing data and same row is updated by PL/SQL procedure/function (all happen in the same user session). In the first case, we would like to inform a user - row data was changed (two different users (more...)