Introduction:
Currency Exchange rate interface running for every 24hrs,
Every 24hrs the sender channel picks the dummy sender XML file from FTP and then it takes the currency exchange rate through URL then send it to PI and update in SAP table in daily process.
Objective:
This document is describe the step by step process of maintain the exchange rate information in SAP system.
Process Flow:
![]()
System Details
Source | Source System File |
Exchange rate URL |
Target | Target System SAP |
Source
Source System File – System Details
IP | - 111.22.111.111
|
Folder | /PI/Test/Currency/ |
User Name | SAPPI |
Password | SAP |
Source System File – Structure
![]()
Source Exchange rate URL Details
Source System ECC – Structure
![]()
Target
Target System SAP– System Details
System | DEV |
IP | 111.111.222.11 |
System Number | 00 |
Client | 100 |
Table Name | ZGTFI_FM_DCURR |
Target System SAP- Structure
![]()
PI Configuration:
Step to create ESR Configurations
Step1
Go to menu object->New, select Namespace, it should start with urn: and next word should be relevant to the interface project.
![]()
Step2
Create data type and enter the name of the type and select namespace and software component version.
![]()
Step3
Select Add symbol below and insert the elements and define the data type.
![]()
Step4
Need to import the RFC, which is created in ECC side, right click the imported objects and select import of SAP Objects.
![]()
In below screen enter the ECC IP address, system number, user name and password, click next.
Select the correct RFC name and click finish. It import the structure of the RFC like below screen.
![]()
![]()
Step5
Create message type for source and target data type like below screen shorts.
![]()
Step6
Create service interfaces like below screen shorts
![]()
![]()
Step7
Create imported archive and select the correct jar file, which handle the java mapping of the URL.
![]()
Step8
Create the operation mapping and select the correct inbound and outbound service interface, in mapping program select the correct java mapping file.
![]()
Step to create ID Configurations:
Step1
Create configuration scenario, in menu New -> object set the name as P_RSS_RFC for group the all ID objects.
![]()
Step2
Create business component for source and target system and define the meaning full name like below.
![]()
![]()
Step3
In business component select the service interface which is created in ESR.
Step4
Create the dummy sender communication channel
![]()
Step5
Create the receiver communication channel for RFC:
![]()
Step6
Create interface determination and assign Operation mapping, which is created in ESR.
![]()
Step7
Create receiver determination and link the source and target system.
![]()
Step8
Create sender agreement and assign the sender file communication channel like below.
![]()
Step9
Create receiver agreement and assign the receiver JDBC communication channel like below.
![]()
Step10
So final configurations is look like below in configuration scenario.
![]()
Code Appendix for Java Mapping:
package com.sap.pi.httpcall;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.StringReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.text.Format;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import com.sap.pi.dto.CurrencyStatus;
public class HttpCall {
public static void main(String[] args) throws IOException {
System.out.println("coming");
HttpCall callUrl= new HttpCall();
callUrl.readUrl();
}
public ArrayList<CurrencyStatus> readUrl()
{
ArrayList<CurrencyStatus> currencyArr = new ArrayList<CurrencyStatus>();
try
{
int len=0;
CurrencyStatus currency=null;
String content="",allContent="";
URL url= new URL("http://themoneyconverter.com/rss-feed/USD/rss.xml");
URLConnection connection = url.openConnection();
len=connection.getContentLength();
System.out.println("coming1 "+len);
if(len>0)
{
BufferedReader input = new BufferedReader(new InputStreamReader(connection.getInputStream()));
while((content=input.readLine())!=null)
{
allContent += content;
}
input.close();
System.out.println(allContent);
currencyArr = this.xmlToTable(allContent);
System.out.println("Currency Arr length "+currencyArr.size());
}else{
System.out.println("Content not available");
}
}catch(IOException e)
{
e.printStackTrace();
}
return currencyArr;
}
private ArrayList<CurrencyStatus> xmlToTable(String xmlValue)
{
Document doc=null;
CurrencyStatus currency = null;
ArrayList<CurrencyStatus> currencyArr = new ArrayList<CurrencyStatus>();
try
{
doc = this.strToDocument(xmlValue);
NodeList nodeList =doc.getElementsByTagName("item");
System.out.println("item node length"+nodeList.getLength());
for(int i=0;i<nodeList.getLength();i++)
{
currency = new CurrencyStatus();
Node node=nodeList.item(i);
if (node.getNodeType() == Node.ELEMENT_NODE) {
//Get title element
Element element = (Element) node;
NodeList nodelist = element.getElementsByTagName("title");
if(nodelist.getLength()>0)
{
Element element1 = (Element) nodelist.item(0);
//System.out.print("title : " + element1.getChildNodes().item(0).getNodeValue());
currency.setTitle(element1.getChildNodes().item(0).getNodeValue());
}
//Get like element
Element element2 = (Element) node;
NodeList nodelist1 = element2.getElementsByTagName("link");
if(nodelist1.getLength()>0)
{
Element element3 = (Element) nodelist1.item(0);
currency.setLink(element3.getChildNodes().item(0).getNodeValue());
//System.out.print(" link : " + element3.getChildNodes().item(0).getNodeValue());
}
//Get guid element
Element element4 = (Element) node;
NodeList nodelist2 = element4.getElementsByTagName("guid");
if(nodelist2.getLength()>0)
{
Element element5 = (Element) nodelist2.item(0);
currency.setGuid(element5.getChildNodes().item(0).getNodeValue());
//System.out.print(" guid : " + element5.getChildNodes().item(0).getNodeValue());
}
//Get pubDate element
Element element6 = (Element) node;
NodeList nodelist3 = element6.getElementsByTagName("pubDate");
if(nodelist3.getLength()>0)
{
Element element7 = (Element) nodelist3.item(0);
//currency.setPubDate(element7.getChildNodes().item(0).getNodeValue());
Format formatter1 = new SimpleDateFormat("E, dd MMM yyyy HH:mm:ss Z");
Format formatter = new SimpleDateFormat("yyyyMMdd");
currency.setPubDate(formatter.format((Date)formatter1.parseObject(element7.getChildNodes().item(0).getNodeValue())));
//System.out.print(" pubDate : " + element7.getChildNodes().item(0).getNodeValue());
}
//Get description element
Element element8 = (Element) node;
NodeList nodelist4 = element8.getElementsByTagName("description");
if(nodelist4.getLength()>0)
{
Element element9 = (Element) nodelist4.item(0);
currency.setDescription(element9.getChildNodes().item(0).getNodeValue());
//System.out.print(" description : " + element9.getChildNodes().item(0).getNodeValue());
}
//Get category element
Element element10 = (Element) node;
NodeList nodelist5 = element10.getElementsByTagName("category");
if(nodelist5.getLength()>0)
{
Element element11 = (Element) nodelist5.item(0);
currency.setCategory(element11.getChildNodes().item(0).getNodeValue());
//System.out.println(" category : " + element11.getChildNodes().item(0).getNodeValue());
}
currencyArr.add(currency);
}
}
}catch(Exception e)
{
System.out.println(e.getMessage());
}
return currencyArr;
}
public Document strToDocument(String xmlVal)
{
Document doc=null;
try
{
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
InputSource is = new InputSource(new StringReader(xmlVal));
doc = builder.parse(is);
}catch(IOException e)
{
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
} catch (ParserConfigurationException e) {
e.printStackTrace();
}
return doc;
}
}
package com.sap.pi.httpcall;
import java.util.ArrayList;
import com.sap.aii.mapping.api.AbstractTransformation;
import com.sap.aii.mapping.api.StreamTransformationException;
import com.sap.aii.mapping.api.TransformationInput;
import com.sap.aii.mapping.api.TransformationOutput;
import com.sap.pi.dto.CurrencyStatus;
public class HttpCallMapping extends AbstractTransformation {
/**
* @param args
*/
@Override
public void transform(TransformationInput in, TransformationOutput out)
throws StreamTransformationException {
ArrayList<CurrencyStatus> currencyArr = new ArrayList<CurrencyStatus>();
StringBuilder xmlValue = new StringBuilder();
String rate = "";
try
{
getTrace().addInfo("JAVA Mapping is Initiated");
HttpCall call = new HttpCall();
currencyArr = call.readUrl();
xmlValue.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?><ns0:ZGTFI_FM_CURR xmlns:ns0=\"urn:sap-com:document:sap:rfc:functions\"> <GT_TCURR>");
for (CurrencyStatus currencyStatus : currencyArr) {
xmlValue.append("<item>");
xmlValue.append("<KURST>M</KURST>");
xmlValue.append("<FCURR>"+currencyStatus.getTitle().substring(4,currencyStatus.getTitle().length())+"</FCURR>");
xmlValue.append("<TCURR>"+currencyStatus.getTitle().substring(0,3)+"</TCURR>");
xmlValue.append("<GDATU>"+currencyStatus.getPubDate()+"</GDATU>");
rate = currencyStatus.getDescription().substring(currencyStatus.getDescription().indexOf("= ")+1,currencyStatus.getDescription().length());
rate =rate.trim().substring(0,rate.trim().indexOf(" "));
//this code should remove
if(rate.length()>9)
{
rate = rate.substring(0,4);
}
xmlValue.append("<UKURS>"+rate+"</UKURS>");
//xmlValue.append("<description>"+currencyStatus.getDescription()+"</description>");
xmlValue.append("<FFACT>1</FFACT>");
xmlValue.append("<TFACT>1</TFACT>");
xmlValue.append("</item>");
}
xmlValue.append("</GT_TCURR></ns0:ZGTFI_FM_CURR>");
out.getOutputPayload().getOutputStream().write(xmlValue.toString().getBytes("UTF-8"));
}catch(Exception e)
{
getTrace().addWarning("Error in Mapping ", e);
}
}
}
Different from other blog:
From URL through AXIS adapter
Michal's PI tips: Exchange Rates from an XML file on a web page - REST, AXIS
Best Regards,
Monikandan.
. You can use a single String field instead of using two String fields, as I did. 
