Using database views in ADF mobile client application

Hi,
I am using Jdeveloper 11.1.1.4 and WLS 10.3.4.
I have developed a POC in ADF mobile client application both with and without synchronization. However, both work with entity objects based on tables.
I need to use database views instead of tables. When I try to include entity object (based on views) in the view object, it shows an error saying "Only the entity objects based on tables can be selected"
Please guide me if there is a work around for this.
Also, please let me know if there is way to develop an ADF mobile client application skipping the use of entity objects at all and using view objects directly to specify the database query and fetch data from the database.
Thanks in advance.
Ansh
Edited by: ansh on Mar 28, 2011 5:40 AM

Hi, Ansh:
Currently, out of box, ADF Mobile Client does not support synchronization against Database Views. This is because Mobile Server imposes some schema restrictions to ensure synchronization with multi-table views would work correctly. This schema restriction requires, for example, the view must have a primary parent table with key defined, and also all base table must be included in the data publication. These dependencies requires manual resolution and advanced planning, and is managed outside of the ADF Mobile Client/JDeveloper project.
To continue development, you would need to create server Entity Objects directly against the base tables. You can then create the mobile ADF Business Component (EOs, VOs, etc). You can then create View Objects in your ADF Mobile Client application based on the database views, in order to retrieve the data you need exactly. In other words, instead of basing EO on the database view, create View Objects in the mobile applicaiton to mimic what you had in the View Object.
Is there any other reason why you would need to access data via database views, instead of directly against base tables?
Thanks,
Joe Huang

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Sorry my content got repeated.
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Edited by: Nikhil Gokhale on Apr 17, 2011 3:55 AM

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Hi,
There are Two Views in My Database and I need to join these Views as one new VO in my ADF app. (and then I need to join this VO with another entity in my app)
I tried to make Entity object of those Views but it seems that you can not make an Entity out of a Database View (and it reasonable !)
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this is to poster.
am not hijacking this thread., i had a question with frank.
However, for CRUD operations this could soon become hairy.
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i need a confirmation for above statement.
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ADF mobile client

I want to develop an ADF mobile client application that uses web services other than using syn server .Therefore i need details about the cost i will have to bear in taking license.

Please read the forum announcement.
I'm locking this off topic thread now.

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11.1.1.4.0 build 5860
mobile server version:
10.3.0.3
blackberry version:
BlackBerry JDE 5.0.0
BlackBerry Smartphone Simulators 6.0.0.141 (9800)
Code:
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[FINE - adfnmc.bindings - BC4JIteratorBinding - createRow]
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 0 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 1 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 2 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 3 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 4 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 5 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 6 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 7 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 8 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 9 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 10 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 11 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 12 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 1 to 2010-12-20 14:58:13.0
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 3 to 2010-12-20 14:58:13.0
[FINE - adfnmc.model - SequenceImpl - create] Database SQLite doesn't support sequences natively; creating TableSequenceImpl for
S_SIEBELMOBILE_S_ORG_EXT
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 0 to 73501
[FINE - adfnmc.model - EntityImpl - getAttribute] Retrieved from siebel.mobile.SOrgExtEO.CreatedBy at index 2
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 2 to 1-11ZQ
[FINE - adfnmc.model - EntityImpl - getAttribute] Retrieved from siebel.mobile.SOrgExtEO.LastUpdBy at index 4
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 4 to 1-53Y
[FINE - adfnmc.model - EntityImpl - getAttribute] Retrieved from siebel.mobile.SOrgExtEO.BuId at index 5
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 5 to 1-1DG
[INFO - adfnmc.model - MetaObjectManager - findOrLoadMetaObject] MetaObject siebel.mobile.AccountAddressFKAssoc not found in cache, so
loading it from XML
[INFO - adfnmc.model - MetaObjectManager - findOrLoadMetaObject] MetaObject siebel.mobile.ActivityAccountFKAssoc not found in cache, so
loading it from XML
[FINE - adfnmc.bindings - BC4JIteratorBinding - notifyRowInserted]
[FINE - adfnmc.bindings - IteratorExecutableBindingImpl - rowInserted] IterBinding - AccountPageDef:AccountAddressView1Iterator
[FINE - adfnmc.bindings - IteratorExecutableBindingImpl - notifyRowInserted] IterBinding - AccountPageDef:AccountAddressView1Iterator
[FINE - adfnmc.bindings - RangeBindingImpl - rowInserted] AccountAddressView1
[FINE - adfnmc.bindings - RangeBindingImpl - notifyNewElement] AccountAddressView1, index:0
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[FINE - adfnmc.bindings - SimpleContext$Variables - setVariable] Setting variable "row" to expression #
{AccountPageDef_AccountAddressView1_rowAlias}
[FINE - adfnmc.ui - BBOutputText - endInit]
Re-launching the MC app:
INFO - adfnmc.bindings - BC4JOperationBinding - execute] Preparing to execute OperationBinding id:'CreateInsert'
[FINE - adfnmc.bindings - BC4JIteratorBinding - createRow]
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 0 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 1 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 2 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 3 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 4 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 5 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 6 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 7 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 8 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 9 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 10 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 11 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 12 to
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 1 to 2010-12-20 15:08:35.0
[FINEST - adfnmc.model - EntityImpl - populateAttribute] Setting value at index 3 to 2010-12-20 15:08:35.0
[FINE - adfnmc.model - SequenceImpl - create] Database SQLite doesn't support sequences natively; creating TableSequenceImpl for
S_SIEBELMOBILE_S_ORG_EXT
[INFO - adfnmc.ui - ErrorHandlerImpl - reportException] BindingContainer: AccountPageDef, exception: oracle.adfnmc.AMCJboException
[WARNING - adfnmc.ui - ErrorHandlerImpl - reportException] [oracle.jbo.server.SequenceImpl$TableSequenceImpl.retrieveSequenceParamsFromDB]
oracle.adfnmc.AMCJboException: ADF-MNC-60109: Error retrieving sequence parameters for sequence S_SIEBELMOBILE_S_ORG_EXT
[WARNING - adfnmc.ui - ErrorHandlerImpl - reportException] oracle.adfnmc.java.sql.SQLException:
net.rim.device.api.database.DataTypeException:Datatype mismatch
[WARNING - adfnmc.ui - ErrorHandlerImpl - reportException] Unable to retrieve String at index 2
[WARNING - adfnmc.ui - ErrorHandlerImpl - reportException]
[FINE - adfnmc.ui - MessageBox - show] message=oracle.adfnmc.AMCJboException: ADF-MNC-60109: Error retrieving sequence parameters for
sequence S_SIEBELMOBILE_S_ORG_EXT
[FINE - adfnmc.ui - MessageBox - show] oracle.adfnmc.java.sql.SQLException: net.rim.device.api.database.DataTypeException:Datatype mismatch
[FINE - adfnmc.ui - MessageBox - show] Unable to retrieve String at index 2

>
>
using 10gR2 on Sun-Solaris. Getting consistently "db file parallel read" over 35 ms as an average wait for the past few months. No performance issues as such.
Using RAID 1+0. DB Size is 2 TB. Transactions are OLTP/Batch
Is this metric high or normal. How to justify that..
Looking at your results it's not really possible to say.
db file parallel read is a request for a number of randomly distirbuted blocks, and the time for a read is the time for the last block of the set to be returned.
Without knowing how many blocks are being requested at a time you can't really determine what constitutes a reasonable time. Given that you say OLTP + Batch, and have a large volume of scattered reads, it's quite possible that you have some queries on the Batch side doing very large index range scans - which would allow for some very large db file parallel reads.
I take it from the use of statspack that you're not licensed for the diagnostic and performance packs; it would be easy to query v$active_session_history to get some idea of the number of blocks per request as this is given by the P2 parameter. As it is. you may be able to get a rough idea by messing about with the various "physical read" numbers in the Instance Activity section of statspack.
Regards
Jonathan Lewis

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Hi Dennis,
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Hi Timo,
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Is the best practice to use database views or view objects?

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While I do not mind a detailed discussion, practical "rule-of-thumb" advice is what I am after; I am a newbie that needs general guidelines - not theories.
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Andrejus Baranovskis's Blog: How to Update Data from DB View using ADF BC DoDML Method
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Difference between Oracle ADF Mobile and Oracle ADF Mobile Client.

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I made a topic and the 'same' question popuped up.
( ADF Mobile: Data synchronization )
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Invoking sync programmatically from mobile client application

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I am just developing a sample application using ADF mobile client for blackberry - I am able to do sync manually whenever there are updates - that is I go and execute mSync manually.
I want to invoke this synchronization whenever the data is saved in my app. How to achieve this programmatically?
Edited by: user12747136 on Nov 15, 2010 9:30 PM

Hi,
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Paninie

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Hi,
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If we get any error on the application, which could be a UI error on laptop, and if everything is working fine on the MDW, is there any way to debug the application on Mobile client?
Also, please provide me links or tips on how to debug the mobile application, on MDW as well.
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Hi,
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Debugging in VB .net is similar to VB6 but you have to notice that changing of the code is NOT possible when being in debug mode.
Regards,
Wolfhard

Where to get ADF Mobile Client Extension?

I could not find it anywhere...
I am using jdev 11.1.1.3.0
I tried using my jdev -> check for updates -> Official Oracle Extension & Updates -> ADF Mobile Client - Developer Preview is not available version 11.1.1.3.37.56.63
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Thanks

I see it in check for updates, but you can download it from here http://www.oracle.com/technology/products/jdev/101/update/center.xml#oracle.adfmc
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Using database views in ADF mobile client application

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