Change parsing Schema Dynamically in 4.0

Hi,
Can I Cange Parsing Schema Dynamically in Apex 4.0
Thanks in Advance
Regards,
Avinash Nagawade

Hi,
This has been discussed on a number of occasions in the past.
See: Change parsing schema ; Change Parsing Schema dynamically? ; APEX: change parsing schema on fly
Ta,
Trent
*Don't forget to reward useful posts

Similar Messages

Change Parsing Schema dynamically?

Hi,
This is a really interesting question, really!
How do I change the default parsing schema automatically. Is this possible at all.
I'm thinking of changaing the OWNER in my authentication function. Will this work if I want to set the schema name in the login page and let the user choose his schema from a drop-down list.
What will the code has to look like?
Thanks in advance!

Sabiha,
I understand now, my apologies.
You may try and enter a query like:
select * from &SCHEMA..EMP
which probably imports fine and even works correctly at runtime. But when you try to edit this, you probably get an error like "Query cannot be parsed, please check the syntax of your query. (ORA-00903: invalid table name)"
This works at runtime because there is an application substitution string called SCHEMA. But at design time, there is no substitution string or session state value called SCHEMA in application 4000 (the application builder). I don't regard this as a bug, though, because substitution of session state and strings is working as expected. You're trying to reference at design time something which typically would only be used in the context of runtime.
In answer to your question and Branimir's question, nothing comes to mind how someone could programatically alter the parsing schema of an application at runtime. One idea, although this only helps you with reports and not much else, is to create your reports based upon a function returning SQL query. Then, you could write your own package and qualify the table owner with whatever you wish.
Joel

Change parsing schema

Hello.
Is it possible to change parsing schema of apex application on the fly? In Oracle Forms applications we could do that...
Thanks for any answers.

Hi Almir,
I assume by your comment about generic Oracle Forms, that the different schemas have identical structure but differing data. If this is the case I would see three options.
1. As already mentioned in this thread, make grants to the parsing schema which is probably an empty schema used only to tie the other schemas together and then prefix all table/view references with a schema name, the only thing that I would add is that the schema name should be referenced through and application variable, rather than hard coded, which is set on login and can be changed as required.
2. You could have a separate copy of the application to go with each parsing schema and then have a controlling entry application which directs the user to the correct application.
3. You could roll all the separate schemas into one schema. With the particular tables that have differing data (reference tables proabably same data) you can have an extra column that defines the ownership of the data and then use the Virtual Private Database feature to separate the users views of the data.
All these options have advantages and disadvantages, but I would prefer option 3 as its the most flexible option and probably the most correct, provided it is possible to re-engineer the underlying schemas to such a degree.
Andre

How to change parsing schema for REST

Hi all,
I'm trying to test the new REST Webservice feature, but this leads to an error:
Using Apex 4.2.1.00.08, Listener 2.0.1.64.14.25 I set up a simple WebService (method: GET, format: JSON) which
querys a table.
When I try to test my webservice (using "Test" button) the following error is shown:
Request Path passes syntax validation
Mapping request to database pool: PoolMap [_poolName=apex, _regex=null, _workspaceIdentifier=null, _failed=false, _lastUpdate=-1, _template=null, _type=REGEX]
Applied database connection info
Attempting to process with PL/SQL Gateway
Not processed as PL/SQL Gateway request
Attempting to process as a RESTful Service
Determining if request can be dispatched as a Tenanted RESTful Service
Request path has one path segment, continuing processing
No Tenant Principal established yet, continuing processing
APEX_LISTENER pool exists, continuing processing
Matching tenant exists, continuing processing
modul/template/ matches: modul/template/ score: 0
Choosing: oracle.dbtools.rt.resource.templates.jdbc.JDBCResourceTemplateDispatcher as current candidate with score: Score [handle=JDBCURITemplate [scopeId=null, templateId=1019223475312614|5204902308237886, uriTemplate=modul/template/], score=0, scope=SecurityConfig [constraint=none, realm=NONE, logonConfig=LogonConfig [logonForm=null, logonFailed=null]], originsAllowed=[], corsEnabled=true]
Determining if request can be dispatched as a Tenanted RESTful Service
Request path has one path segment, continuing processing
Tenant Principal already established, cannot dispatch
Chose oracle.dbtools.rt.resource.templates.jdbc.JDBCResourceTemplateDispatcher as the final candidate with score: Score [handle=JDBCURITemplate [scopeId=null, templateId=1019223475312614|5204902308237886, uriTemplate=modul/template/], score=0, scope=SecurityConfig [constraint=none, realm=NONE, logonConfig=LogonConfig [logonForm=null, logonFailed=null]], originsAllowed=[], corsEnabled=true] for: GET modul/template/
Choosing: oracle.dbtools.rt.jdbc.entity.JDBCTenantDispatcher as current candidate with score: Score [handle=oracle.dbtools.rt.jdbc.entity.JDBCTenantDispatcher$TenantTarget@1537060, score=1, scope=SecurityConfig [constraint=none, realm=NONE, logonConfig=LogonConfig [logonForm=null, logonFailed=null]], originsAllowed=[], corsEnabled=true]
Chose oracle.dbtools.rt.jdbc.entity.JDBCTenantDispatcher as the final candidate with score: Score [handle=oracle.dbtools.rt.jdbc.entity.JDBCTenantDispatcher$TenantTarget@1537060, score=1, scope=SecurityConfig [constraint=none, realm=NONE, logonConfig=LogonConfig [logonForm=null, logonFailed=null]], originsAllowed=[], corsEnabled=true] for: GET prx/modul/template/
prx/modul/template/ is a public resource
modul/template/ is a public resource
Using generator: oracle.dbtools.rt.json.query.JSONQueryGenerator
Performing JDBC request as: POFFICE
Error during evaluation of resource template: ORA-00942: Tabelle oder View nicht vorhanden
I see what is going wrong: "Performing JDBC request as: POFFICE". JDBC is using a wrong schema ("POFFICE").
So, my question is, how to change the parsing schema for JDBC/WebService?
Thanks a lot,
Michael

jfle wrote:
Yes - this is the reason,
but is there a way to change or delete the first schema provisioned?See {message:id=3757162}
We have deleted the poffice assignment to the workspace, but the REST-service executes with poffice?Don't know could be a bug.
May be try exporting you restful webservice definition > Edit the export file in textpad/notepad and verify the parsing schema
You will see a block something like below, there just amend the p_parsing_schema to desired > and then import it back
wwv_flow_api.create_restful_module (
p_id => 7113266627142076447 + wwv_flow_api.g_id_offset
,p_name => 'oracle.example.vikram2'
,p_parsing_schema => 'APX'
,p_items_per_page => 25
,p_status => 'PUBLISHED'
);

How to change parsing schema for using application in test environment?

Hi,
I set up a test environment, i.e. an other Oracle schema with identical tables, views etc. to the productive environment. I wanted to duplicate the APEX application so that there will be a test version using the test Oracle schema and productive version using the productive oracle schema.
Can some one please give me some tip how to do this? As far as I see i could change the parsing schema in the APEX Application install SQL in the following ways:
1. While exportin the application with APEX
2. In the result install f...sql file using search-replace
3. While importing the APEX application via APEX Development GUI.
I would prefere 1. or 3. but in both cases when I would like to change the schema name, the drop dowl list does not contain the test Oracle schema name. Do I have to grant something to the APEX worksspace schema for the test schema name to show up in the drop dowl list?
Tamás

On that screen,
- click Create
- select "Existing" Schema, click Next
- select the Workspace, click Next
- select the Schema, click Next
- click Add Schema
And now you'll end up with two schema's attached for the same Workspace.

App needs to run on multiple DBs; can parsing schema/ ref owner be dynamic?

I have an app that needs to run on multiple databases. Is there a way to create something like an app-level item -- something that only needs to be set once -- that can be referenced to specify the parsing schema, and all of the instances of "reference table owner" used to specify the source for DML? Or (I've not tried this yet) can I just NOT set the value of reference table owner? In my case, the reference table owner for all tables is the same as the parsing schema.
Thanks,
Carol

hi Varad -- I should have been more specific. The application does not need to access multiple databases; rather, it will be installed on multiple databases, operating only on the DB on which it's installed. (Same functionality on each DB, same DB schemas in each, different data in each.)
So, I'm wondering if there is a way to have the parsing schema somehow be set automatically based on information in the database, or if I'll have to create a slightly different version of the app, w/ different parsing schemas, for each database.
It was recommended to me (perhaps by you, I can't recall) that the parsing schema be the same as the owner of the tables that the app accesses; the table owner is different in each of these databases, so that is the source of this problem (if indeed it is a problem).
Thoughts?
Thanks,
Carol

How do i change xml schema in java

i want to change a oracle.xml.parser.schema.xmlschema object in java (adding or changing elements, types, etc). is there some hidden way i didn't think of besides changing the xmldocument object behind the schema and rebuilding the schema? i find that rather uncomfortable.
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thanks

Refer to
http://java.sun.com/webservices/docs/1.1/tutorial/doc/JAXPDOM9.html

"SOAP-ERROR: Parsing Schema: unexpected complexType in complexType"

Hi, I am trying to access cca service through wsdl by php. but when i am trying to create messageprovider object, that time i got error something like "SOAP-ERROR: Parsing Schema: unexpected <complexType> in complexType" . Please help me to resolve for this error.

hi,
just do not use WS-Policy. To achieve this change the WSDL-URL fed to the constructor from
... wsdl11/ws_policy/document?sap-client=123
to
... wsdl11/standard/document?sap-client=123
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anton

How to Change Annotion values dynamically

Hi,
I need to know how we can change the values of annotation dynamically. For example, my application uses DB2 database for which table name and schema name are reqired for Entities as follows.
*@Entity*
*@Table (name*="EMPLOYEE", schema="SC235")
public class Employee {
I would like to change the Schema name at run time.ie, the same application may be run with different DB2 data base which conatins same table structures and names but with different Schema names. Is there any way we could change the Schema name at runtime. Atleast if any body suggest how to configure Schema name through persistence.xml or any other property files wold be great.
Note: When I tried to assign a value from resource bundle, it is throwing the error "the value for annotaion attribute *Table.schema* must be a constant expression" during compilation itself.
Please help.

sk_java wrote:
Hi,
I need to know how we can change the values of annotation dynamically.Annotations in source code must be compile-time constants. The annotation objects returned by the runtime are immutable.
That said, there are a few ways to get the effect of changing annotation values. First, you can use the redefine classes API and then getting a new annotation object will have the updated values. Also, an annotation type is just a specialized kind of interface and that interface can be implemented by your own classes too.

Random Bingads WSDL errors: Parsing WSDL: Couldn't load from...failed to load external entity, Could not connect to host, Parsing Schema: can't import schema from

Hi,
I am developing a web tool that accesses client's Bingads accounts via OAUTH2 granting. I am downloading data from clients daily.
Generally it worked, but for 2 days I am experiencing a weird issue, that in random times (but more and more often though) I receive random error messages from Bing server. I am pasting below a few example from my logs (with timestamp and request/response).
Must note that I launch these requests from the server where we have the webapp but also I launch it locally. The same is the result.
The timestamp is in France time (GMT+1).
Thanks ahead!
Best regards,
Steve
2015-01-14 15:08:05: Service\BingAds::initService => SOAP-ERROR: Parsing Schema: can't import schema from 'https://reporting.api.bingads.microsoft.com/Api/Advertiser/Reporting/V9/ReportingService.svc?xsd=xsd0'
---------Soap Request:--------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="https://bingads.microsoft.com/CampaignManagement/v9"><SOAP-ENV:Header><ns1:CustomerAccountId>XXX</ns1:CustomerAccountId><ns1:CustomerId/><ns1:DeveloperToken>XXX</ns1:DeveloperToken><ns1:UserName/><ns1:Password/><ns1:AuthenticationToken>XXX</ns1:AuthenticationToken></SOAP-ENV:Header><SOAP-ENV:Body><ns1:GetDetailedBulkDownloadStatusRequest><ns1:RequestId>108277125</ns1:RequestId></ns1:GetDetailedBulkDownloadStatusRequest></SOAP-ENV:Body></SOAP-ENV:Envelope>
---------Response:------------------------------------------------
<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"><s:Header><h:TrackingId xmlns:h="https://bingads.microsoft.com/CampaignManagement/v9">XXXXX</h:TrackingId></s:Header><s:Body><GetDetailedBulkDownloadStatusResponse
xmlns="https://bingads.microsoft.com/CampaignManagement/v9"><Errors i:nil="true" xmlns:i="http://www.w3.org/2001/XMLSchema-instance"/><ForwardCompatibilityMap xmlns:a="http://schemas.datacontract.org/2004/07/System.Collections.Generic"
xmlns:i="http://www.w3.org/2001/XMLSchema-instance"/><PercentComplete>100</PercentComplete><RequestStatus>Completed</RequestStatus><ResultFileUrl>https://download.api.bingads.microsoft.com/ReportDownload/Download.aspx?q=XXX</ResultFileUrl></GetDetailedBulkDownloadStatusResponse></s:Body></s:Envelope>
2015-01-15 05:41:39: Service\BingAds::getCampaigns => SoapFault: Could not connect to host
---------Soap Request:--------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="https://bingads.microsoft.com/CampaignManagement/v9"><SOAP-ENV:Header><ns1:CustomerAccountId>XXX</ns1:CustomerAccountId><ns1:CustomerId/><ns1:DeveloperToken>XXX</ns1:DeveloperToken><ns1:UserName/><ns1:Password/><ns1:AuthenticationToken>XXX</ns1:AuthenticationToken></SOAP-ENV:Header><SOAP-ENV:Body><ns1:GetCampaignsByAccountIdRequest><ns1:AccountId>XXX</ns1:AccountId></ns1:GetCampaignsByAccountIdRequest></SOAP-ENV:Body></SOAP-ENV:Envelope>
---------Response:------------------------------------------------
(empty response logged)
2015-01-15 05:45:00: Service\BingAds::initService => SOAP-ERROR: Parsing WSDL: Couldn't load from 'https://api.bingads.microsoft.com/Api/Advertiser/CampaignManagement/v9/CampaignManagementService.svc?singleWsdl' : failed to load external entity "https://api.bingads.microsoft.com/Api/Advertiser/CampaignManagement/v9/CampaignManagementService.svc?singleWsdl"
2015-01-15 11:58:46: Service\BingAds::getCampaigns =>
---------Soap Fault:--------------------------------------------
SoapFault catched:
Could not connect to host
---------Soap Request:--------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="https://bingads.microsoft.com/CampaignManagement/v9"><SOAP-ENV:Header><ns1:CustomerAccountId>XXXX</ns1:CustomerAccountId><ns1:CustomerId/><ns1:DeveloperToken>XXXX</ns1:DeveloperToken><ns1:UserName/><ns1:Password/><ns1:AuthenticationToken>XXX</ns1:AuthenticationToken></SOAP-ENV:Header><SOAP-ENV:Body><ns1:GetCampaignsByAccountIdRequest><ns1:AccountId>XXXX</ns1:AccountId></ns1:GetCampaignsByAccountIdRequest></SOAP-ENV:Body></SOAP-ENV:Envelope>
---------Response:------------------------------------------------
(empty response logged)
2015-01-15 11:59:50: Service\BingAds::initService =>
---------Soap Fault:--------------------------------------------
SoapFault catched:
SOAP-ERROR: Parsing WSDL: Couldn't load from 'https://api.bingads.microsoft.com/Api/Advertiser/CampaignManagement/v9/CampaignManagementService.svc?singleWsdl' : failed to load external entity "https://api.bingads.microsoft.com/Api/Advertiser/CampaignManagement/v9/CampaignManagementService.svc?singleWsdl"
---------Soap Request:--------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="https://bingads.microsoft.com/CampaignManagement/v9"><SOAP-ENV:Header><ns1:CustomerAccountId>XXX</ns1:CustomerAccountId><ns1:CustomerId/><ns1:DeveloperToken>XXXXX</ns1:DeveloperToken><ns1:UserName/><ns1:Password/><ns1:AuthenticationToken>XXXX</ns1:AuthenticationToken></SOAP-ENV:Header><SOAP-ENV:Body><ns1:GetCampaignsByAccountIdRequest><ns1:AccountId>XXX</ns1:AccountId></ns1:GetCampaignsByAccountIdRequest></SOAP-ENV:Body></SOAP-ENV:Envelope>
---------Response:------------------------------------------------
<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"><s:Header><h:TrackingId xmlns:h="https://bingads.microsoft.com/CampaignManagement/v9">XXXXX</h:TrackingId></s:Header><s:Body><GetCampaignsByAccountIdResponse
xmlns="https://bingads.microsoft.com/CampaignManagement/v9"><Campaigns xmlns:i="http://www.w3.org/2001/XMLSchema-instance"></Campaign>........</Campaigns></GetCampaignsByAccountIdResponse></s:Body></s:Envelope>
2015-01-15 12:05:55: Service\BingAds::getCampaigns =>
---------Soap Fault:--------------------------------------------
SoapFault catched:
Could not connect to host
---------Soap Request:--------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="https://bingads.microsoft.com/CampaignManagement/v9"><SOAP-ENV:Header><ns1:CustomerAccountId>XXXXX</ns1:CustomerAccountId><ns1:CustomerId/><ns1:DeveloperToken>XXXXX</ns1:DeveloperToken><ns1:UserName/><ns1:Password/><ns1:AuthenticationToken>XXXXXX</ns1:AuthenticationToken></SOAP-ENV:Header><SOAP-ENV:Body><ns1:GetCampaignsByAccountIdRequest><ns1:AccountId>XXXXX</ns1:AccountId></ns1:GetCampaignsByAccountIdRequest></SOAP-ENV:Body></SOAP-ENV:Envelope>
---------Response:------------------------------------------------
(empty response logged)

Hi,
1. I am using the older version of the PHP library provided by Bing (updated on 1/20/2014), so that is doing the WSDL loadings. I initialize the proxy calling OpticoBingAdsClientProxy providing what it needs, and then do the requests.
2. I have a cron that reads data from client's accounts. I make several calls, like get search query report, get keyword performance report, get keyword bulk data. As the script progressed the first 2 worked and the third gave error. Or in other cases the
first request failed. The calls have quite some time in between them since I process data (sometimes even 160 seconds)
3. I did not change the code ion terms of requests, since as I said I use the PHP library (same credentials, ...).
As of today (2015-01-16 10:30 GMT + 2) running my script, still have the same issues.
Thank you!
Steve

How to parse a dynamic xml in java

I have to parse a dynamic xml document : the different TheItemNames and the racine are changing . So , can you help me with a code because to parse a xml document you must presents the racine and TheItemNames

My previous post gives me an idea on how to use ArrayList of ArrayList as dynamic 2 dimensional array.
More info bellow
ArrayList rows = new ArrayList()
ArrayList columns_of_row0 = new ArrayList()
rows.insertAt(0) = columns_of_row0;
ArrayList columns_of_row1 = new ArrayList()
rows.insertAt(1) = columns_of_row1;and so on..
You can't use the code exactly or similar way, it would depend on how this array grows in your application.
But this and my previous post should give an idea on how to insert and retrieve elements from ArrayList when
treated as 2 dimensional array.
Hope this helps.

Invalid parsing schema for current workspace ID

I have an application that captures different SQL statements (they make use of DB links) and dynamically executes them on demand.
I use apex collections to get the result rows for the SQL and use them to both query on the UI as well as send out emails using the returned data. This is all OK and works fine.
I then added another feature to my application where I support the scheduling of the running the SQL / sending out of the emails. It uses the same logic as I use from within the application but it fails with the following error ...
Invalid parsing schema for current workspace ID
when the SQL is being used to populate the collection.
The scheduling is done using the apex plsql job scheduling package. It's as though the context that the job is running in is different from that of the application I created. The strange thing is that it can still see my tables that I created as the queries return data from my tables but for some reason seems to have an issue with the use of apex collections.
Any ideas or suggestions would be greatly appreciated.

Scott,
Today the error mentioned in the last post occurred 3 times - the highest number in a single day yet. Also, to add to the dilemma, a new one occurred:
ORA-20104: create_collection_from_query_b Error:ORA-20101: Application collection exists
Knowing that the create collection process is called from a post authentication process I don't see how that the collection could exist for that session... Any ideas?
Regards,
Dan
http://danielmcghan.us
http://sourceforge.net/projects/tapigen

Parse schema name - Avoiding hard-coded schema names

Hi all,
I have been trying to find a similar thread but had no luck. I want to avoid hard-coding schema names in my reports. I have tried to use a Substitution string but I don't seem to be able to reference it by just doing :default_schema. I already reference the parsing schema like this: #OWNER# which is saving me a lot of time. Is there any way to create additional variables like that one instead of those substitution strings that can't be parsed in a query?
Thanks a lot for your help.
Regards,
werot.

Werot wrote:
I have been trying to find a similar thread but had no luck. I want to avoid hard-coding schema names in my reports. I have tried to use a Substitution string but I don't seem to be able to reference it by just doing :default_schema. I already reference the parsing schema like this: #OWNER# which is saving me a lot of time. Is there any way to create additional variables like that one instead of those substitution strings that can't be parsed in a query?
Will you actually get any benefit from using substitution strings? They are also hard-coded at design time. You could use application items if you need something dynamic.
Bind variable syntax (:default_schema) will not work for lexical substitution of substitution string and application item values in report queries. You have to use static text (&DEFAULT_SCHEMA.) references (and be aware of the potential for SQL injection that this exposes).
I wouldn't recommend using schema qualifiers directly in APEX applications. I would use grants, synonyms and views at the database level.

Change connection schema in Stored Program?

Hi,
Can anyone tell me if I can change connection schema in a stored program (not form program unit)? Does Oracle provide any build-in?
Thanks.

I could not think of a direct command to change connection. But I have written a tool that will read the username, password and database name from a table and dynamically create the link from within the procedure and use the link for further processing.
The rough out line is as follows.
1. read the table containing
databasename, password, connect str
2. dbms_sql or dbma_utility function to
create a link for those parameters
the link name can be some thing like
mylink.
3. further dmls on the procedure
like
select * from xxxx@mylink;
But if you want the statements in the statements in step 3 to be non-dynamic sql then create a dummy link mylink to the current schema itself, so that the procedure will not have any compilation problem. also make sure whatever tables structures used in step 3 exist in the current schema.
null

Choosing Different parsing schema

Hi,
I have 2 application using the one parsing schema (sch1)
Now I want to create one another application, I would like to choose a different schema as parsing shcema (sch2),
is this possible? it is not allowing me or it is not listing in the list box.

Hi,
Yes this is possible, you will need to assign schema sch2 to the workspace. You can do this in the APEX Admin app under Manage Workspaces 'Manager Workspace to Schema Assignments'. Then back in the Apex builder edit the Application definition and change the Parsing Schema to sch2.
Regards
Paul

Change parsing Schema Dynamically in 4.0

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