Determine the URL associated with a request without resorting to request headers.

What should I do for the URL of a request without resorting to what the caller to set the request headers X-APEX-PATH and X-APEX-BASE?

Is a variable binding available?  I tried: url and: uri without success.

I would like this information in order to implement HATEOAS features; to return the "parent" of the current URL or other URL are not children of the URL of the request, but it can be derived related.  For example, the URL of the https://server:port / xxx/account/abc123/recipes/zxy987 I wish I could return a URL reference for all bills paid (see example below).  If there is another, or better, medium provided by ADR interested.

Thank you.

{

"items":]

"uri": {}

        "$ref": " Https://Server:port / ADR/account/abc123/ERC/RXYZ987 "

},

"receipt_number": "RXYZ987",

"receipt_date": "2015-01 - 02 T 08: 00:00Z"

'amount': ' $249,00 ",

"bills":]

{

"invoice_number": "INV123",

'total': ' $149,00 ",

"uri": {}

            "$ref": " Https://Server:port / ADR/account/abc123/invs/INV123 "

}

},

{

"invoice_number": "INV130",

"total": "$100.00". "

"uri": {}

            "$ref": " Https://Server:port / ADR/account/abc123/invs/INV130 "

}

}

]

]

}

Hi Ryan,

Well, getting back to your original question, there is a WAY BETTER way to build these hyperlink references.

In the documentation of the ADR ( http://docs.oracle.com/cd/E56351_01/doc.30/e56293/develop.htm#AELIG90013 ), we find the following paragraph:

Based on what I've created an example based on the EMP table:

set sqlblanklines on

declare
  l_moduleid   number;
  l_templateid number;
  l_handlerid  number;
begin
  -- delete module if exists
  ords_services.delete_module('URL-Sample');

  -- REST Modul anlegen
  l_moduleid := ords_services.create_module(
    p_name       => 'URL-Sample'
   ,p_uri_prefix => 'URL-Sample/'
   ,p_status     => 'PUBLISHED'
  );

  -- 1. URL-Template
  l_templateid := ords_services.add_template(
    p_module_id    => l_moduleid
   ,p_uri_template => 'employees/'
  );

  --------------------------------------
  -- GET Handler to retrieve a full list of all employees
  -- GET URL-Sample/employees/
  --------------------------------------
  l_handlerid := ords_services.add_handler(
    p_template_id  => l_templateid
   ,p_source_type  => ords.source_type_collection_feed
   ,p_source       => q'[

   select empno "$self", emp.* from emp

   ]'
   ,p_method       => 'GET'
   ,p_items_per_page => 100
  );  

  -- 2. URL-Template
  l_templateid := ords_services.add_template(
    p_module_id    => l_moduleid
   ,p_uri_template => 'employees/{empno}'
  );

  --------------------------------------
  -- GET Handler to retrieve a single employee
  -- GET URL-Sample/employees/{empno}
  --------------------------------------
  l_handlerid := ords_services.add_handler(
    p_template_id  => l_templateid
   ,p_source_type  => ords.source_type_query
   ,p_source       => q'[

   select empno "$uri",
       '../employees/' "$collection",
       '../../metadata-catalog/handler-test/feed/' "$describedby",
       emp.*
  from emp
 where empno=:empno

   ]'
   ,p_method       => 'GET'
  );  

end;
/

commit
/

/*=======================================================================
  now we can test the service using :

  *) GET a list of contacts:
  curl -i http://localhost:8080/ords/ordstest/URL-Sample/employees/

  *) GET a single contact:
  curl -i http://localhost:8080/ords/ordstest/URL-Sample/employees/7782

=======================================================================*/

When you run this you get the following results:

Especially note here that you are working with absolute and relative paths here (using a relative path syntax in a directory tree:... /..).

The feature is really cool... If it was established only the most obviously.

It's a shame.

I used in this example ords.source_type_query as a return type for a single employee. If I use ords.source_type_collection_item as return type, ADR will be actually build the reference to the parent that feed by itself:

It works for you?

~ Dietmar.

Tags: Database

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