SOAP API Connector for Talend Studio
In this article you will learn how to integrate Using SOAP API Connector you will be able to connect, read, and write data from within Talend Studio. Follow the steps below to see how we would accomplish that. The driver mentioned above is part of ODBC PowerPack which is a collection of high-performance Drivers for various API data source (i.e. REST API, JSON, XML, CSV, Amazon S3 and many more). Using familiar SQL query language you can make live connections and read/write data from API sources or JSON / XML / CSV Files inside SQL Server (T-SQL) or your favorite Reporting (i.e. Power BI, Tableau, Qlik, SSRS, MicroStrategy, Excel, MS Access), ETL Tools (i.e. Informatica, Talend, Pentaho, SSIS). You can also call our drivers from programming languages such as JAVA, C#, Python, PowerShell etc. If you are new to ODBC and ZappySys ODBC PowerPack then check the following links to get started. |
Connect to SOAP API in other apps
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What is SOAP Web Service?
If you are new to SOAP Web Service sometimes referred as XML Web Service then please read some concept about SOAP Web service standard from this link
There are two important aspects in SOAP Web service.
- Getting WSDL file or URL
- Knowing exact Web Service URL
What is WSDL
In very simple term WSDL (often pronounced as whiz-dull) is nothing but a document which describes Service metadata (e.g. Functions you can call, Request parameters, response structure etc). Some service simply give you WSDL as xml file you can download on local machine and then analyze or sometimes you may get direct URL (e.g. http://api.mycompany.com/hr-soap-service/?wsdl )
What is Service URL
Service URL is actual API URL you can call to get data. When you make a request to SOAP service url make sure following things.
- Use correct service URL (Its not same as WSDL url). If you are not sure about service URL contact API vendor or refer API documentation.
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Each service call you have to supply function you want to call. This can be done in 3 different ways.
- Pass via SOAPAction HTTP Header
- Pass via Url parameter or Url Path (http://myserver/service/function1 — http://myserver/service/?method=function1 )
- Pass via Request BODY
- Find out how to pass credentials. It can be done via Basic Authorization or WSS Security Header in the Request body. Check this link to learn more
Using SoapUI to test SOAP API call / Create Request Body XML
If you do not have WSDL file or URL handy then contact your API provider (sometimes you just have to add ?wsdl at the end of your Service URL to get WSDL so try that. Example: http://mycompany/myservice?wsdl ). If you don't know what is WSDL then in short, WSDL is Web service Description Language (i.e. XML file which describes your SOAP Service). WSDL helps to craft SOAP API request Body for ZappySys XML Driver. So Let's get started.
- Download and Install SoapUI (It’s a Free tool to test SOAP / REST Services)
- Open SoapUI and click SOAP button to create new SOAP Project
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Enter WSDL URL or File Path of WSDLFor example WSDL for our sample service can be accessed via this URL
http://www.holidaywebservice.com/HolidayService_v2/HolidayService2.asmx?wsdl
Create new SOAP API Project in SoapUI tool for SOAP API Testing - Once WSDL is loaded you will see possible operations you can call for your SOAP Web Service.
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If your web service requires credentials then you have to configure it. There are two common credential types for public services (SOAP WSS or BASIC )
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To use SOAP WSS Credentials select request node and enter UserId, Password, and WSS-PasswordType (PasswordText or PasswordHash)
Configure SOAP WSS Credentials for SoapUI (SOAP API Testing Tool) -
To use BASIC Auth Credentials select request node and double-click it. At the bottom click on Auth (Basic) and From Authorization dropdown click Add New and Select Basic.
Configure Basic Authorization for SoapUI (SOAP API Testing Tool)
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- Now you can test your request first Double-click on the request node to open request editor.
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Change necessary parameters, remove optional or unwanted parameters. If you want to regenerate request you can click on Recreate default request toolbar icon.
Create SOAP Request XML (With Optional Parameters) -
Once your SOAP Request XML is ready, Click the Play button in the toolbar to execute SOAP API Request and Response will appear in Right side panel.
Test SOAP API using SoapUI Tool (Change Default XML Body / Parameters, Execute and See Response)
Once you have tested your SOAP API in SoapUI tool, we are ready to use ZappySys SSIS Tasks/Components or ODBC Drivers to call SOAP API in SSIS or your preferred BI tool or Programming language.
Create Data Source in ZappySys Data Gateway based on XML Driver
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Download and install ZappySys ODBC PowerPack.
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Search for gateway in start menu and Open ZappySys Data Gateway:
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Go to Users Tab to add our first Gateway user. Click Add; we will give it a name tdsuser and enter password you like to give. Check Admin option and click OK to save. We will use these details later when we create linked server:
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Now we are ready to add a data source. Click Add, give data source a name (Copy this name somewhere, we will need it later) and then select Native - ZappySys XML Driver. Finally, click OK. And it will create the Data Set for it and open the ZS driver UI.
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Configure API URL, Request Method and Request Body as below screen. Select Url or File and paste the following Url for this example OR you can load existing connection string as per this article.
NOTE: Here i am using demo SOAP API URL, but you need to refer your own API documentation and based on that you need to use your own API URL and need to configure connection based on API Authentication type.http://www.holidaywebservice.com/HolidayService_v2/HolidayService2.asmx?wsdl
ZappySys XML Driver - Calling SOAP API - Configure URL, Method, Body -
(This step is Optional) If your SOAP API requires credentials then Select Connection Type to HTTP and configure as below.
ZappySys XML Driver - Configure SOAP WSS Credentials or Basic Authorization (Userid, Password) -
Configure-Request Headers as below (You can get it from Request > Raw tab from SoapUI after you test the request by clicking the Play button)
Configure SOAP API Request Headers - ZappySys XML Driver -
Once credentials entered you can select Filter to extract data from the desired node. Make sure to select array node (see special icon) or select the node which contains all necessary columns if you don't have array node.
Select Filter - Extract data from nested XML / SOAP API Response (Denormalize Hierarchy) -
If prompted select yes to treat selected node as Array (This is helpful when you expect one or more record for selected node)
Treat selected node as XML Array Option for SOAP API Response XML -
Once the data source has been configured, Go to Preview tab and click on preview data to view the data.
You can create the default query, generated based on settings you entered in previous sections also, by using Query Builder. Attributes listed in WITH clause are optional. If you omit attribute in WITH clause it will use it from Properties tab.
Preview SOAP API Response in ZappySys XML Driver -
Click OK to finish creating the data source.
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That's it; we are done. In a few clicks we configured the call to SOAP API using ZappySys SOAP Connector.
Read SOAP API data in Talend Studio
To read SOAP API data in Talend Studio, we'll need to complete several steps. Let's get through them all right away!
Create connection for input
- First of all, open Talend Studio
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Create a new connection:
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Select Microsoft SQL Server connection:
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Name your connection:
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Fill-in connection parameters and then click Test connection:
SoapapiDSN
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If the List of modules not installed for this operation window shows up, then download and install all of them:
Review and accept all additional module license agreements during the process -
Finally, you should see a successful connection test result at the end:
Add input
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Once we have a connection to ZappySys Data Gateway created, we can proceed by creating a job:
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Simply drag and drop ZappySys Data Gateway connection onto the job:
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Then create an input based on ZappySys Data Gateway connection:
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Continue by configuring a SQL query and click Guess schema button:
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Finish by configuring the schema, for example:
Add output
We are ready to add an output. From Palette drag and drop a tFileOutputDelimited output and connect it to the input:
Run the job
Finally, run the job and integrate your SOAP API data:
Configuring pagination in the XML Driver
ZappySys XML Driver equips users with powerful tools for seamless data extraction and management from REST APIs, leveraging advanced pagination methods for enhanced efficiency. These options are designed to handle various types of pagination structures commonly used in APIs. Below are the detailed descriptions of these options:
Page-based Pagination: This method works by retrieving data in fixed-size pages from the Rest API. It allows you to specify the page size and navigate through the results by requesting different page numbers, ensuring that you can access all the data in a structured manner.
Offset-based Pagination: With this approach, you can extract data by specifying the starting point or offset from which to begin retrieving data. It allows you to define the number of records to skip and fetch subsequent data accordingly, providing precise control over the data extraction process.
Cursor-based Pagination: This technique involves using a cursor or a marker that points to a specific position in the dataset. It enables you to retrieve data starting from the position indicated by the cursor and proceed to subsequent segments, ensuring that you capture all the relevant information without missing any records.
Token-based Pagination: In this method, a token serves as a unique identifier for a specific data segment. It allows you to access the next set of data by using the token provided in the response from the previous request. This ensures that you can systematically retrieve all the data segments without duplication or omission.
Utilizing these comprehensive pagination features in the ZappySys XML Driver facilitates efficient data management and extraction from REST APIs, optimizing the integration and analysis of extensive datasets.
For more detailed steps, please refer to this link: How to do REST API Pagination in SSIS / ODBC Drivers
Authentication
ZappySys offers various authentication methods to securely access data from various sources. These authentication methods include OAuth, Basic Authentication, Token-based Authentication, and more, allowing users to connect to a wide range of data sources securely.
ZappySys Authentication is a robust system that facilitates secure access to data from a diverse range of sources. It includes a variety of authentication methods tailored to meet the specific requirements of different data platforms and services. These authentication methods may involve:
OAuth: ZappySys supports OAuth for authentication, which allows users to grant limited access to their data without revealing their credentials. It's commonly used for applications that require access to user account information.
Basic Authentication: This method involves sending a username and password with every request. ZappySys allows users to securely access data using this traditional authentication approach.
Token-based Authentication: ZappySys enables users to utilize tokens for authentication. This method involves exchanging a unique token with each request to authenticate the user's identity without revealing sensitive information.
By implementing these authentication methods, ZappySys ensures the secure and reliable retrieval of data from various sources, providing users with the necessary tools to access and integrate data securely and efficiently. For more comprehensive details on the authentication process, please refer to the official ZappySys documentation or reach out to their support team for further assistance.
For more details, please refer to this link: ZappySys Connections
Advanced topics
Create Custom Stored Procedure in ZappySys Driver
You can create procedures to encapsulate custom logic and then only pass handful parameters rather than long SQL to execute your API call.
Steps to create Custom Stored Procedure in ZappySys Driver. You can insert Placeholders anywhere inside Procedure Body. Read more about placeholders here
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Go to Custom Objects Tab and Click on Add button and Select Add Procedure:
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Enter the desired Procedure name and click on OK:
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Select the created Stored Procedure and write the your desired stored procedure and Save it and it will create the custom stored procedure in the ZappySys Driver:
Here is an example stored procedure for ZappySys Driver. You can insert Placeholders anywhere inside Procedure Body. Read more about placeholders here
CREATE PROCEDURE [usp_get_orders] @fromdate = '<<yyyy-MM-dd,FUN_TODAY>>' AS SELECT * FROM Orders where OrderDate >= '<@fromdate>';
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That's it now go to Preview Tab and Execute your Stored Procedure using Exec Command. In this example it will extract the orders from the date 1996-01-01:
Exec usp_get_orders '1996-01-01';
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Let's generate the SQL Server Query Code to make the API call using stored procedure. Go to Code Generator Tab, select language as SQL Server and click on Generate button the generate the code.
As we already created the linked server for this Data Source, in that you just need to copy the Select Query and need to use the linked server name which we have apply on the place of [MY_API_SERVICE] placeholder.
SELECT * FROM OPENQUERY([MY_API_SERVICE], 'EXEC usp_get_orders @fromdate=''1996-07-30''')
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Now go to SQL served and execute that query and it will make the API call using stored procedure and provide you the response.
Create Custom Virtual Table in ZappySys Driver
ZappySys API Drivers support flexible Query language so you can override Default Properties you configured on Data Source such as URL, Body. This way you don't have to create multiple Data Sources if you like to read data from multiple EndPoints. However not every application support supplying custom SQL to driver so you can only select Table from list returned from driver.
If you're dealing with Microsoft Access and need to import data from an SQL query, it's important to note that Access doesn't allow direct import of SQL queries. Instead, you can create custom objects (Virtual Tables) to handle the import process.
Many applications like MS Access, Informatica Designer wont give you option to specify custom SQL when you import Objects. In such case Virtual Table is very useful. You can create many Virtual Tables on the same Data Source (e.g. If you have 50 URLs with slight variations you can create virtual tables with just URL as Parameter setting.
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Go to Custom Objects Tab and Click on Add button and Select Add Table:
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Enter the desired Table name and click on OK:
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And it will open the New Query Window Click on Cancel to close that window and go to Custom Objects Tab.
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Select the created table, Select Text Type AS SQL and write the your desired SQL Query and Save it and it will create the custom table in the ZappySys Driver:
Here is an example SQL query for ZappySys Driver. You can insert Placeholders also. Read more about placeholders here
SELECT "ShipCountry", "OrderID", "CustomerID", "EmployeeID", "OrderDate", "RequiredDate", "ShippedDate", "ShipVia", "Freight", "ShipName", "ShipAddress", "ShipCity", "ShipRegion", "ShipPostalCode" FROM "Orders" Where "ShipCountry"='USA'
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That's it now go to Preview Tab and Execute your custom virtual table query. In this example it will extract the orders for the USA Shipping Country only:
SELECT * FROM "vt__usa_orders_only"
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Let's generate the SQL Server Query Code to make the API call using stored procedure. Go to Code Generator Tab, select language as SQL Server and click on Generate button the generate the code.
As we already created the linked server for this Data Source, in that you just need to copy the Select Query and need to use the linked server name which we have apply on the place of [MY_API_SERVICE] placeholder.
SELECT * FROM OPENQUERY([MY_API_SERVICE], 'EXEC [usp_get_orders] ''1996-01-01''')
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Now go to SQL served and execute that query and it will make the API call using stored procedure and provide you the response.
Conclusion
In this article we discussed how to connect to SOAP API in Talend Studio and integrate data without any coding. Click here to Download SOAP API Connector for Talend Studio and try yourself see how easy it is. If you still have any question(s) then ask here or simply click on live chat icon below and ask our expert (see bottom-right corner of this page).
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SOAP API ODBC Driver | ODBC Driver for SOAP API | ODBC SOAP API Driver | SSIS SOAP API Source | SSIS SOAP API Destination
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