Consuming RESTful web service in Apex app

Hi,
I have created a RESTful Web service through an Apex application (4.0) and published as a public web service. Can someone point me to an example of how to then consume that service in another Apex app? The output is straightforward XML that I can retrieve just by pointing the browser to the URL of the service created, but when I go to create the REST Web Reference for the receiving application, I am not sure what to put for the Response Xpath or Response Namespace. The service is meant to just return report records that were created in the REStful Web service with no input required.
The service XML looks like this:
<ROWSET>
<ROW>
<PROJ_ID>132</PROJ_ID>
<PSL_NETID>xxxxxxxx</PSL_NETID>
<PROJECT_TITLE>11g- Oracle Upgrade to RAC 11g</PROJECT_TITLE>
<CUSTOMER>OIT</CUSTOMER>
<DIVISION>EIS</DIVISION>
</ROW>
<ROW>
<PROJ_ID>132</PROJ_ID>
<PSL_NETID>xxxxxx</PSL_NETID>
<PROJECT_TITLE>11g- Oracle Upgrade to RAC 11g</PROJECT_TITLE>
<CUSTOMER>OIT</CUSTOMER>
<DIVISION>CSS</DIVISION>
Any help would be appreciated.
Thanks,
Pat
Edited by: patfmnd on Dec 7, 2012 3:04 AM

Hi,
I have made progress in this. I created the RESTful report service in an Apex 4.1 application. (previous attempt was with 4.0 version of Apex)
I then created a separate application and created a RESTful web service reference that I tested and it was successful in bringing up XML. However in Apex 4.1, when I create a report following the Wizard for creating a report based on that Web service reference I get the error: ORA-31013: Invalid XPATH expression Which I don't know how to get past. The Xpath provided in the Web service reference test gave output below and brought back a result. There was no where during the Report creation to provide an Xpath. Am I missing something or is 4.1 not quite Web service ready??
This is what I get from the test of the Web service reference in the Apex App from which I want to create a report: (I see in this XML the data I was expecting from the test of the RESTful web service but it looks like the output I get from the Web service test is more like the Report xml itself.)
<!DOCTYPE html> <html lang="en" xmlns="http://www.w3.org/1999/xhtml" xmlns:htmldb="http://htmldb.oracle.com" xmlns:apex="http://apex.oracle.com"> <head> <title>Author</title>
 <script type="text/javascript">
//<![CDATA[
var apex_img_dir = "/i/", htmldb_Img_Dir = apex_img_dir;
//]]>
</script>
<script src="/i/javascript/apex_4_1.min.js" type="text/javascript">
</script>
<script type="text/javascript">
//<![CDATA[
apex.security.framebreaker("D");
//]]>
</script>

<form action="wwv_flow.accept" method="post" name="wwv_flow" id="wwvFlowForm"><input type="hidden" name="p_flow_id" value="140" id="pFlowId" /><input type="hidden" name="p_flow_step_id" value="1" id="pFlowStepId" /><input type="hidden" name="p_instance" value="6146802068150520" id="pInstance" /><input type="hidden" name="p_page_submission_id" value="1940235134399423" id="pPageSubmissionId" /><input type="hidden" name="p_request" value="" id="pRequest" />
<div id="header">
<div id="app-logo"><a href="f?p=140:1:0"></a></div>
<div id="navbar">
<div class="navbar-entry">Logout</div>
</div>
</div>
<div id="tabs">
<div class="frame">
<div class="bg">
<div class="tab-holder">
<div class="first-current">
<div><span>Author</span></div>
</div>
</div>
</div>
</div>
</div>
<div id="topbar">
<div class="breadcrumb-region" id="R170908223330421512">
<div>
<div id="breadcrumbs">
<ul class="breadcrumb-list">
<li class="current">Author</li>
</ul>
</div>
</div>
</div>
</div>
<div id="messages"></div>
<div id="body">
<table class="tbl-body" cellspacing="0" cellpadding="0" border="0" summary="">
<tbody>
<tr>
<td class="tbl-main" width="100%">
<div class="rounded-corner-region" id="books">
<div class="rc-blue-top">
<div class="rc-blue-top-r">
<div class="rc-title">AUTHOR</div>
<div class="rc-buttons"><button value="Reset" class="button-gray" type="button" id="B170907622885421490"><span>Reset</span></button></div>
</div>
</div>
<div class="rc-body">
<div class="rc-body-r">
<div class="rc-content-main">
<table id="apex_layout_170907030238421484" border="0" class="formlayout" summary="" role="presentation" datatable="0">
<tr>
<td align="right"><label for="P1_REPORT_SEARCH" tabindex="999"><a class="optional-w-help" href="javascript:popupFieldHelp('170907422375421487','6146802068150520')" tabindex="999">Search</a></label></td>
<td colspan="1" rowspan="1" align="left"><input type="hidden" name="p_arg_names" value="170907422375421487" /><input type="text" id="P1_REPORT_SEARCH" name="p_t01" value="" size="30" maxlength="2000" class="text_field" /></td>
<td align="right"><label for="P1_ROWS" tabindex="999"><a class="optional-w-help" href="javascript:popupFieldHelp('170907508375421490','6146802068150520')" tabindex="999">Display</a></label></td>
<td colspan="1" rowspan="1" align="left"><input type="hidden" name="p_arg_names" value="170907508375421490" /><select name="p_t02" id="P1_ROWS" size="1" class="selectlist">
<option value="10">10</option>
<option value="15" selected="selected">15</option>
<option value="20">20</option>
<option value="30">30</option>
<option value="50">50</option>
<option value="100">100</option>
<option value="200">200</option>
<option value="500">500</option>
<option value="1000">1000</option>
<option value="5000">5000</option>
</select></td>
<td align="left"></td>
<td colspan="1" rowspan="1" align="left"><button value="Go" class="button-gray" type="button" id="P1_GO"><span>Go</span></button></td>
</tr>
</table>
<div id="report_170907030238421484_catch">
<table cellpadding="0" border="0" cellspacing="0" summary="" id="report_books">
<tr>
<td></td>
</tr>
<tr>
<td>
<table cellpadding="0" border="0" cellspacing="0" summary="" class="report-standard">
<tr>
<th id="AUTHORID" class="header">
<div class="rpt-sort">Authorid<img align="absmiddle" src="/i/arrow_up_gray_dark.gif" width="13" height="12" alt="Sort by this column" /></div>
</th>
<th id="LNAME" class="header">
<div class="rpt-sort">Lname</div>
</th>
<th id="FNAME" class="header">
<div class="rpt-sort">Fname</div>
</th>
</tr>
<tr class="highlight-row">
<td headers="AUTHORID" class="data">A100</td>
<td headers="LNAME" class="data">AUSTIN</td>
<td headers="FNAME" class="data">JAMES</td>
</tr>
<tr class="highlight-row">
<td headers="AUTHORID" class="data">A105</td>
<td headers="LNAME" class="data">ADAMS</td>
<td headers="FNAME" class="data">JUAN</td>
</tr>
<tr class="highlight-row">
<td headers="AUTHORID" class="data">B100</td>
<td headers="LNAME" class="data">BAKER</td>
<td headers="FNAME" class="data">JACK</td>
</tr>
<tr class="highlight-row">
<td headers="AUTHORID" class="data">F100</td>
<td headers="LNAME" class="data">FIELDS</td>
<td headers="FNAME" class="data">OSCAR</td>
</tr>
<tr class="highlight-row">
<td headers="AUTHORID" class="data">J100</td>
<td headers="LNAME" class="data">JONES</td>
<td headers="FNAME" class="data">JANICE</td>
</tr>
<tr class="highlight-row">
<td headers="AUTHORID" class="data">K100</td>
<td headers="LNAME" class="data">KZOCHSKY</td>
<td headers="FNAME" class="data">TAMARA</td>
</tr>
<tr class="highlight-row">
<td headers="AUTHORID" class="data">M100</td>
<td headers="LNAME" class="data">MARTINEZ</td>
<td headers="FNAME" class="data">SHEILA</td>
</tr>
<tr class="highlight-row">
<td headers="AUTHORID" class="data">P100</td>
<td headers="LNAME" class="data">PORTER</td>
<td headers="FNAME" cla
Edited by: patfmnd on Dec 12, 2012 5:59 PM
Edited by: patfmnd on Dec 12, 2012 6:07 PM

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age varchar2(100));
begin
insert into students(name, age)
values(:name, :age);
end;
</code>
This works, But the following will fail,
{"name": "John", "age": "21"}, {"name": "Mary", "age": "22"}.
I would like to load the document into memory and insert into a table.

How to consume Google REST web service

Dear All,
I have a task to embed Google Maps into web dynpro and/or CRM WebUI.
There is no problem with embedding only map with route on it, but I need also calculated distance.
In WebDynpro I've just created iFrame CHIP component which targets: http://maps.google.pl/maps?output=embed and two CHIPS with import parameters to give source and destination address. Route is calculated and drawn.
Problem is with the distance, because the only way is to consume google web service (which is not SOAP, so I can't use service consumer). It must be something like web request.
URL which I need to access is:
http://maps.googleapis.com/maps/api/distancematrix/xml?&mode=driving&sensor=false&origins=Warsaw&destinations=Hamburg
or
http://maps.googleapis.com/maps/api/distancematrix/json?&mode=driving&sensor=false&origins=Warsaw&destinations=Hamburg
where origins and destinations must be connected with import CHIPS. How to access such service in a proper way?
Second thing is that I have to parse response.. it could be XML or JSON format. I just need summary distance. Any idea?
Btw - I'm quite fresh with WebDynpro and WebUI, so I'm looking for good 'HOW TO' guide. Can you recommend something which is good to start with?
thanks in advance

Hi,
check this reference to start with: [How to integrate google maps in Web Dynpro ABAP|http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/b0bca5ae-3c5c-2d10-938d-a81787f59ace?QuickLink=index&overridelayout=true]
Also this demo by Thomas Jung Sir: [Google Maps: Flash Islands in WDA|http://www.sdn.sap.com/irj/scn/index?rid=/library/uuid/80f16eef-91ef-2b10-4fb5-d709436f3cc3&overridelayout=true]
hope this helps u.,
@moderators: Don't Close this thread instead move to Web Dynpro ABAP Forum
Thanks & Regards,
Kiran

HTTP error when trying to access RESTful web service from application

Hi,
We are getting the following error when trying to access a RESTful web service coming from Apex workspace 4.2.1 and Apex listener 2.1:
ORA-29273: HTTP request failed ORA-06512: at "SYS.UTL_HTTP", line 1130 ORA-29024: Certificate validation failure
In the Debug report, besides the above I also see:
error_backtrace: ORA-06512: at "SYS.UTL_HTTP", line 1130 ORA-06512: at "APEX_040200.WWV_FLOW_WEB_SERVICES", line 543 ORA-06512: at "APEX_040200.WWV_FLOW_WEB_SERVICES", line 1164 ORA-06512: at "APEX_040200.WWV_FLOW_PROCESS", line 396
We get that error whether we use https or http in the URI pointing to the web service. When I test the Web Service in Workspace RESTful service GUI, I get the data back. When I go build an application with a report calling the RESTful Web Service I get that error. Both the Application and the Workspace RESTful services are on the same Apex environment and even the same workspace.
What is odd is that I can actually put the URL of the web service into a browser and I get the data: (using the demo hr data in sample RESTful services.)
IN browser-- https://weblogic-dev.edu/apex/ace/hr/empinfo/
yields:
7839,KING,PRESIDENT,,1981-11-17T05:00:00Z,5000,,10 7698,BLAKE,MANAGER,7839,1981-05-01T04:00:00Z,2850,,30 7782,CLARK,MANAGER,7839,1981-06-09T04:00:00Z,2450,,10 7566,JONES,MANAGER,7839,1981-04-02T05:00:00Z,2975,,20 7788,SCOTT,ANALYST,7566,1982-12-09T05:00:00Z,3000,,20 7902,FORD,ANALYST,7566,1981-12-03T05:00:00Z,3000,,20 7369,SMITH,CLERK,7902,1980-12-17T05:00:00Z,800,,20 7499,ALLEN,SALESMAN,7698,1981-02-20T05:00:00Z,1600,300,30 7521,WARD,SALESMAN,7698,1981-02-22T05:00:00Z,1250,500,30 7654,MARTIN,SALESMAN,7698,1981-09-28T04:00:00Z,1250,1400,30 7844,TURNER,SALESMAN,7698,1981-09-08T04:00:00Z,1500,0,30 7876,ADAMS,CLERK,7788,1983-01-12T05:00:00Z,1100,,20 7900,JAMES,CLERK,7698,1981-12-03T05:00:00Z,950,,30 7934,MILLER,CLERK,7782,1982-01-23T05:00:00Z,1300,,10
Any ideas on what would be causing the Error above in our application?
Thanks,
Pat
Edited by: patfmnd on Mar 11, 2013 3:25 PM
In reviewing the above error, I think we are realizing that we have to have the Weblogic layer SSL cert (actually the CERT from our BigIP load balancer which also does our SSL termination) imported into the Oracle server wallet where Apex is installed. Am I correct?
PM

We resolved our problem. The Apex Administrative Guide made us realize that we had to set up Wallet path in the Instance. This required working with DBAs to follow the Advanced networking guide to get the wallet set up on our server. We then added that path to the Instance configuration. (Manager Instance --> Instance settings). We ran into another other issue related to our implementation of CAS but were able to resolve that, and 'voila' were able to get the sample RESTful service consumed by our application!!
Now to the task of figuring out how to get Basic Auth working between client application and RESTful web service. If anyone has that working, let us know!!
It would be helpful if in the documentation of the Apex 2.x listener or Apex install/configuration there was clear reference to the above steps required for HTTPS access to RESTful web services.
Pat

REST Web Service References: Can't run Google APIS

Hello Everyone!
I am learning on how to integrate REST web service reference in APEX application. I found a tutorial video at YouTube on 'Creating and Using a RESTful Web Service in Application Express 4.2', which found to be very helpful and easy to do on my sample app. The REST Web Service URL:
http://maps.googleapis.com/maps/api/geocode/xml?address=san%20fancisco&sensor=false
But my application throws an error as below:
1 error has occurred
ORA-29273: HTTP request failed ORA-06512: at "SYS.UTL_HTTP", line 1130 ORA-24247: network access denied by access control list (ACL)
After going through some of the posts here at OTN, I have granted access as follows:
GRANT EXECUTE ON SYS.UTL_HTTP TO ETI;
GRANT EXECUTE ON SYS.UTL_INADDR TO ETI;
GRANT EXECUTE ON SYS.UTL_TCP TO ETI;
GRANT EXECUTE ON SYS.UTL_SMTP TO ETI;
GRANT EXECUTE ON SYS.UTL_URL to ETI;
GRANT EXECUTE ON SYS.UTL_XML to ETI;
Second thing I did was, created and assigned ACL:
begin
dbms_network_acl_admin.create_acl (
    acl         => 'googleapis.xml',
    description => 'Google Translate API',
    principal   => 'CONNECT',
    is_grant    => true,
    privilege   => 'connect',
    start_date => null,
    end_date    => null
dbms_network_acl_admin.add_privilege (
    acl       => 'googleapis.xml',
    principal => 'CONNECT',
    is_grant => true,
    privilege => 'connect'
dbms_network_acl_admin.assign_acl (
    acl => 'googleapis.xml',
    host => 'ajax.googleapis.com'
dbms_network_acl_admin.assign_acl (
    acl => 'googleapis.xml',
    host => 'maps.googleapis.com'
end;
All these statements were executed on my database with out any error, even though not helping my web service reference to work.
Any idea how can I get my Google API REST Web service working, what is the thing I'm missing here?

I apologize for the lack of information.
I thought I had included a list of schemas for you to try out.
At first, (due to the GRANT ___ TO ETI;) I thought you were writing your own Web Service parser in PL/SQL.
(If that was the case, than ETI would need be part with the ACL)
Then, I realized,you were using the built in APEX functionality.
In this case, try adding your APEX_{version} schema as part of the ACL.
I'm not sure if this will work (I haven't tried it).
However, I do know you need to add the APEX_{version} to the ACL if you use the LDAP Authentication.
finding APEX_{version}
select comp_id, version, status, schema
from dba_registry
where comp_id='APEX'
MK

Exposing a report as RESTful web service - Parameters

Hi,
I am creating a RESTful web service by exposing an apex report. It just works fine and it renders the data. However I want to have parameters and values in the web service URL so that the data can be filtered based on the parameter values?
For example:
http://127.0.0.1:8080/apex/apex_rest.getReport?app=100&page=15&reportid=rest_example renders correctly for the report query
select * from (
select
"CUSTOMER_ID",
"CUST_FIRST_NAME",
"CUST_LAST_NAME",
"CUST_STREET_ADDRESS1",
"CUST_STREET_ADDRESS2",
"CUST_CITY",
"CUST_STATE",
"CUST_POSTAL_CODE",
"PHONE_NUMBER1",
"PHONE_NUMBER2",
"CREDIT_LIMIT",
"CUST_EMAIL"
from #OWNER#.DEMO_CUSTOMERS )
where (
instr(upper("CUST_FIRST_NAME"),upper(nvl(:P15_REPORT_SEARCH,"CUST_FIRST_NAME"))) > 0 or
instr(upper("CUST_LAST_NAME"),upper(nvl(:P15_REPORT_SEARCH,"CUST_LAST_NAME"))) > 0
)But I want to filter the result for a particular customer id by getting a value in the URL like this.
http://127.0.0.1:8080/apex/apex_rest.getReport?app=100&page=15&reportid=rest_example&P15_CUSTOMER_ID=6 and to use the value received thro the URL in the report query
select * from (
select
"CUSTOMER_ID",
"CUST_FIRST_NAME",
"CUST_LAST_NAME",
"CUST_STREET_ADDRESS1",
"CUST_STREET_ADDRESS2",
"CUST_CITY",
"CUST_STATE",
"CUST_POSTAL_CODE",
"PHONE_NUMBER1",
"PHONE_NUMBER2",
"CREDIT_LIMIT",
"CUST_EMAIL"
from #OWNER#.DEMO_CUSTOMERS
where customer_id = :P15_CUSTOMER_ID)
where (
instr(upper("CUST_FIRST_NAME"),upper(nvl(:P15_REPORT_SEARCH,"CUST_FIRST_NAME"))) > 0 or
instr(upper("CUST_LAST_NAME"),upper(nvl(:P15_REPORT_SEARCH,"CUST_LAST_NAME"))) > 0
)Is it possible to have it working in this way?
I am currently testing this in apex 4.2 and Oracle 11g XE. My development environment will be Apex 4.1 and Oracle 11g.
Thanks in Advance.
Regards,
Natarajan
Edited by: Nattu on Dec 18, 2012 2:09 AM

It does accept values for the parameters but does not accept value names in the URL.
The previous thread Restful web service passing character parameters helped me to get it working.
Thanks.

Java Restful Web service client

Hello,
I need to know a piece of informations:-
requirement is - there will 2 applications, typically, 2 war files - 1 war will be Restful web service producer and 2nd war will be the consumer.
My producer is working fine, so how can I make consumer which will basically call the producer and get the data.
will it be like producer would be a typical jar(in my case war file) file base app which will connect o db and the service related task.
Let me know if there is any better desiging.
Regards,
R

Hello,
I need to know a piece of informations:-
requirement is - there will 2 applications, typically, 2 war files - 1 war will be Restful web service producer and 2nd war will be the consumer.
My producer is working fine, so how can I make consumer which will basically call the producer and get the data.
will it be like producer would be a typical jar(in my case war file) file base app which will connect o db and the service related task.
Let me know if there is any better desiging.
Regards,
R

Consuming RESTful web service in Apex app

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