Step 1: Choose File -> New - >

Project of your Netweaver Developer Studio

of CAF perspective.

Step 17: Now we have to create one custom structure for input parameter of delete_ZIP method.

Step 18: After you create the custom structure it should look like as screenshot.

Step 19: Now we have to create custom method to our application service. To do those go to the operations tab of our application service.

Then press the Add button one popup will be come and choose the first radio button with option Custom operation and then provide the name of operation.

1. data_Archive
2. restore_DAT_TO_BO

package com.tcs.jaxb.util;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.ByteArrayOutputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.io.InputStream;

import java.io.StringReader;

import java.io.StringWriter;

import java.util.Calendar;

import java.util.Random;

import java.util.zip.ZipEntry;

import java.util.zip.ZipException;

import java.util.zip.ZipFile;

import java.util.zip.ZipInputStream;

import java.util.zip.ZipOutputStream;

import javax.xml.bind.JAXBContext;

import javax.xml.bind.JAXBException;

/**

*@author

*

*/

publicclass JaxbUtil {

    /**

      *Thismethodcreatethezipfile

andreturntheAbsolutefilepath

      *

      *@paramstringsFileName-

      *            PasstheFileNametobeZIP

      *@return-Astringobjectwithabsolutepath

      */

    publicstatic String createZIP

(String stringsFileName,String stringBOName) {

          String zipFileName = "";

          zipFileName = createDirectory() + "/" +

stringBOName+"-"+createId() + ".zip";

          try {

              File file = new File(zipFileName);

              ZipOutputStream out =

new ZipOutputStream(

                        new FileOutputStream(file));

              out.putNextEntry

(new ZipEntry(stringsFileName));

              BufferedReader bufferedReader

= new BufferedReader

(new FileReader(stringsFileName));

              String string;

              while ((string

= bufferedReader.readLine()) != null) {

                  out.write(string.getBytes());

              }

              bufferedReader.close();

              out.closeEntry();

              out.flush();

              out.close();

              zipFileName = file.getAbsolutePath();

          } catch (FileNotFoundException e) {

              // TODO Auto-generated catch block

              e.printStackTrace();

          } catch (IOException e) {

              // TODO Auto-generated catch block

              e.printStackTrace();

          }

          return zipFileName;

    }

    /**

      *ThisMethodCreateUniqueID

      *

      *@return-AStringobjectwiththeID

      */

    publicstatic String createId() {

          return Long.toHexString

(Calendar.getInstance().getTimeInMillis()) + "-"

                  + Integer.toHexString

((new Random()).nextInt() % 65536);

    }

    /**

      *ThismethodReadtheZIPFileand

returnsContentoftheFileinaString

      *object

      *

      *@paramstringFileName-

      *            PasstheFilenametoberead

      *@return-ContentofthefileinaStringobject

      */

    publicstatic String

readZipFile(String stringFileName) {

ByteArrayOutputStream byteArrayOutputStream

= new ByteArrayOutputStream();

          try {

              ZipFile zipFile

= new ZipFile(new File(stringFileName));

              ZipInputStream zipInputStream

= new ZipInputStream(

                        new FileInputStream(stringFileName));

              ZipEntry zipEntry

= zipInputStream.getNextEntry();

              BufferedReader reader

= new BufferedReader(new FileReader(

                        stringFileName));

              byte[] bs = reader.readLine().getBytes();

              reader.close();

              zipInputStream.closeEntry();

              zipInputStream.close();

              InputStream inputStream

= zipFile.getInputStream(zipEntry);

              int len;

              while ((len = inputStream.read(bs)) > 0) {

                  byteArrayOutputStream

.write(bs, 0, len);

              }

              inputStream.close();

              byteArrayOutputStream.close();

          } catch (ZipException e) {

              // TODO Auto-generated catch block

              e.printStackTrace();

          } catch (IOException e) {

              // TODO Auto-generated catch block

              e.printStackTrace();

          }

          return byteArrayOutputStream.toString();

    }

    /**

      *ThismethodDeletethepassedfile.

      *

      *@paramstringFileName-

      *            Passthefilepathtobedelete

      */

    publicstaticvoid

deleteFile(String stringFileName) {

          File file = new File(stringFileName);

          if (file.exists() && file.isFile()) {

              file.delete();

          }

    }

    /**

      *ThismethodcreateaNewFile

andwritecontentstotheNewlyCreated

      *file

      *

      *@paramstringFileContent-

      *            Passthecontentofthefiletobewritten

      *@return-Astringobjectwith

AbsoluteFileDirectory

      */

    publicstatic String

writeToHD(String stringFileContent) {

          String string = null;

          try {

              string = createDirectory()

+ "/" + createId() + ".xml";

              File file = new File(string);

              if (!file.exists()) {

                  file.createNewFile();

              }

              BufferedWriter bufferedWriter =

new BufferedWriter(new FileWriter(

                        file));

              bufferedWriter.write(stringFileContent);

              bufferedWriter.close();

              string = file.getAbsolutePath();

          } catch (IOException e) {

              // TODO Auto-generated catch block

          }

          return string;

    }

    /**

      *ThisMethodconvertsJavaObject

toXMLTreeandReturntoStringObject

      *

      *@paramobject-

      *            forJavaObjectDataStructure(WithData)

      *@paramclass1-

      *            forJavaClass(DataStructureClassInstance)

      *@return-AStringObjectWithXMLFormat

      */

    publicstatic String

jaxbMarshalConvertJavaObjectToXMLTree(Object object,

              Class<?> class1) {

          StringWriter writerPage = new StringWriter();

          try {

              JAXBContext jaxbContextPage

= JAXBContext.newInstance(class1);

              jaxbContextPage

.createMarshaller().marshal(object, writerPage);

          } catch (JAXBException e) {

              // TODO Auto-generated catch block

              e.printStackTrace();

          }

          return writerPage.toString();

    }

    /**

      *ThismethodconvertsXMLTreeObjecttoJavaObject.

      *

      *@paramstringReadPage-

      *            PassDataStreamlikeaStringobject

      *@paramclass1-

      *            PassTheDataStructureClassInstance

      *@return-ObjectofJavaDataStructure,

youhavetoCastwhereyou

      *        callingthismethodwithJavaDataStructure

      */

    public  static Object

jaxbUNMarshalConvertXMLTreeToJavaObject(

              String stringReadPage, Class<?> class1) {

          Object dataStructureReadPage = null;

          try {

              JAXBContext jaxbContextPage

= JAXBContext.newInstance(class1);

              dataStructureReadPage =

(Object) jaxbContextPage                        .createUnmarshaller().unmarshal(

                                  new StringReader(stringReadPage));

          } catch (JAXBException e) {

              // TODO Auto-generated catch block

              e.printStackTrace();

          }

          return dataStructureReadPage;

    }

    /**

      *ThismethodcreateaDirectoryintheHD

inthedefineddirectorye.g:

      *"/usr/sap/"+SystemName+"/XML_DAS/"

      *

      *@return-AStringObjectwithdetailsof

AbsolutePathofDirectory

      */

    public  static String createDirectory() {

          File file = null;

          String sysNam =

System.getProperty("SAPSYSTEMNAME");

          String stringDirPathName =

"/usr/sap/" + sysNam + "/" + "XML_DAS" + "/";

          if (stringDirPathName != null

&& !"".equals(stringDirPathName)) {

              file =

new File(stringDirPathName);

              if (!file.mkdirs()) {

                  file.mkdirs();

              }

          }

          if (null != file.getAbsolutePath()) {

              stringDirPathName =

file.getAbsolutePath();

          }

          return stringDirPathName;

    }

Step 25: Now we have to create Message driven bean for scheduler. Create a message driven bean of name : Example_Shcedule with supper class MDBJobImplementation with destination name : MyDestinations and then press next button and then press the finish button without changing any default configuatraion.

package com.tcs.nw.scheduler;

import javax.ejb.ActivationConfigProperty;

import javax.ejb.EJB;

import javax.ejb.MessageDriven;

import javax.jms.MessageListener;

import com.tcs.example.ce.archive.modeled

.appsrv.dataarchiveapp.

DataArchiveAppServiceLocal;

import com.sap.scheduler.

runtime.JobContext;

import com.sap.scheduler.

runtime.mdb.MDBJobImplementation;

/**

*Message-DrivenBean

implementationclassfor:Example_Shedule

*

*/

@MessageDriven(

          activationConfig =

{@ActivationConfigProperty( propertyName="messageSelector", propertyValue="JobDefinition='Example_JobBean'"),

                  @ActivationConfigProperty(

                  propertyName = "destinationType",

propertyValue = "javax.jms.Queue"

          ) },

          mappedName = "MyDestination")

publicclass Example_Shedule

extends MDBJobImplementation implements MessageListener {

    privatestaticfinallongserialVersionUID =

4485561670312885280L;

    @EJB(name="com.tcs.example.ce.archive.modeled.

appsrv.dataarchiveapp.DataArchiveApp")

    DataArchiveAppServiceLocal

dataArchiveAppServiceLocal;

    /**

    *@seeMDBJobImplementation

#MDBJobImplementation()

    */

    public Example_Shedule() {

        super();

        // TODO Auto-generated constructor stub

    }

    @Override

    publicvoid onJob(JobContext arg0)

throws Exception {

          // TODO Auto-generated method stub

          dataArchiveAppServiceLocal.dataArchive(); 

    }

}

Step 30: Now we have to write our Application service implementation methods.

Below are the methods we are going to implement.

1. data_Archive
2. restore_DAT_TO_BO

import java.util.ArrayList;

import java.util.Calendar;

import java.util.List;

import com.tcs.example.ce.archive.modeled.BOToArchive;

import com.tcs.example.ce.archive.modeled.History;

import com.tcs.example.ce.archive.modeled.bonode

.botoarchive.botoarchive.BOToArchiveServiceLocal;

import com.tcs.example.ce.archive.modeled

.bonode.history.history.HistoryServiceLocal;

import com.tcs.jaxb.data.structure.JAXB_Data_Structure;

import com.tcs.jaxb.util.JaxbUtil;

import com.sap.caf.rt.exception.CAFCreateException;

import com.sap.caf.rt.exception.CAFDeleteException;

import com.sap.caf.rt.exception.CAFFindException;

import com.sap.caf.rt.exception.CAFLockException;

import com.sap.caf.rt.exception.CAFUpdateException;

-------------------------------------------------------------------------------------------------------------

public void dataArchive() {

        JAXB_Data_Structure data_Structure

= new JAXB_Data_Structure();

        List<BOToArchive> list_BOToArchive_OUT

= new ArrayList<BOToArchive>();

        BOToArchiveServiceLocal archiveServiceLocal

= this.getBOToArchiveService();

        try {

            List<BOToArchive> list_BOToArchive

= archiveServiceLocal.findAll();

            if(list_BOToArchive != null

&& list_BOToArchive.size() > 0){

                for (BOToArchive toArchive : list_BOToArchive) {

                    list_BOToArchive_OUT.add(toArchive);

                    archiveServiceLocal.delete(toArchive);

                }

            }

        } catch (CAFFindException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        } catch (CAFDeleteException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        } catch (CAFLockException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        Calendar calendar = Calendar.getInstance();

        // Set the Data to JAXB Data Structure

        data_Structure.

setList_BOToArchive(list_BOToArchive_OUT);

        // Convert Java Object to XML Tree

        String string_JavaObjectToXMLTree = JaxbUtil.

jaxbMarshalConvertJavaObjectToXMLTree

(data_Structure, JAXB_Data_Structure.class);

        // Write Content To HD

        String string_ZIP_FILE_NAME_IN_HD = JaxbUtil.writeToHD(string_JavaObjectToXMLTree);

        //Create ZIP File

        String string_ZIP_FILE_NAME = JaxbUtil.createZIP

(string_ZIP_FILE_NAME_IN_HD, "BOToArchive-"

+String.valueOf(calendar.getTime()));

        //Delete The HD File

        JaxbUtil.deleteFile(string_ZIP_FILE_NAME_IN_HD);

        // Store Actual BO & Path Name in HIstroty BO

        HistoryServiceLocal historyServiceLocal =

this.getHistoryService();

        try {

            History history = historyServiceLocal.create();

            history.setId(("BOToArchive"+"-"+

String.valueOf(calendar.getTime())+"-"+JaxbUtil.createId()));

            history.setPath(string_ZIP_FILE_NAME);

            historyServiceLocal.update(history);

        } catch (CAFCreateException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        } catch (CAFUpdateException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        } catch (CAFLockException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

    }

------------------------------------------------------------------------------------------------------

public void restoreDATTOBO(java.lang.String nameofTheArchiveBO,

java.lang.String merge_Indicator) {

        HistoryServiceLocal historyServiceLocal = this.getHistoryService();

        BOToArchiveServiceLocal archiveServiceLocal

= this.getBOToArchiveService();

        try {

            List<History> list_History = historyServiceLocal.findAll();

            if(merge_Indicator != null && !"".equals(merge_Indicator) && merge_Indicator.equalsIgnoreCase("Y")){

                this.dataArchive();

            }

            for (History history : list_History) {

                if(nameofTheArchiveBO !=null

&& !"".equals(nameofTheArchiveBO) && nameofTheArchiveBO.equalsIgnoreCase(history.getId())){

                    //Convert XML Tree to Java Object

                    String string_ZipFile = JaxbUtil.readZipFile(history.getPath());

                    JAXB_Data_Structure object_JAXB_Data_Structure = (JAXB_Data_Structure)JaxbUtil

.jaxbUNMarshalConvertXMLTreeToJavaObject(string_ZipFile, JAXB_Data_Structure.class);

                    List<BOToArchive> list_BOToArchive = object_JAXB_Data_Structure.getList_BOToArchive();

                    for (BOToArchive toArchive : list_BOToArchive) {

                        BOToArchive archive = archiveServiceLocal.create();

                        archiveServiceLocal.update(archive);

                        toArchive.setCreatedAt(archive.getCreatedAt());

                        toArchive.setCreatedBy(archive.getCreatedBy());

                        toArchive.setKey(archive.getKey());

                        toArchive.setModifiedAt(archive.getModifiedAt());

                        toArchive.setModifiedBy(archive.getModifiedBy());

                        archiveServiceLocal.update(toArchive);

                    }

                    historyServiceLocal.delete(history);

                    break;

                }

            }

        } catch (CAFFindException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        } catch (CAFCreateException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        } catch (CAFUpdateException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        } catch (CAFLockException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        } catch (CAFDeleteException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

    }

--------------------------------------------------------------------------------------------------------

public void deleteZIP(com.tcs.example.ce.

archive.modeled.BODeleteStruct delete) {

        HistoryServiceLocal historyServiceLocal

= this.getHistoryService();

        if(delete != null){

            List<String> list_String = delete.getPaths();

            try {

                List<History> list_History = historyServiceLocal.findAll();

    if(list_String != null && list_String.size() > 0){

for (String string : list_String) {

    for (History history : list_History) {

                            if(history.getId().equalsIgnoreCase(string)){

    //Delete The File

                                JaxbUtil.deleteFile(history.getPath());

                                historyServiceLocal.delete(history);

                            }

                        }

                    }

                }

            } catch (CAFFindException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            } catch (CAFDeleteException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            } catch (CAFLockException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            }

        }

    }

Step 31: Now we have to deploy our project to SAP Application server.

1. Generate
2. Build

Step 32: After deployment we have to go CAF service browser to insert few data to our BO.

Then press the Next Button and provide the data as below

Then press Next button.

Then press Next button. And provide the start time of your scheduler.

Then press Add button.

And then press finish button. It will go to the Tasks tab.

And you will see your task in the task list as below.

And press the refresh button on the above screen if your task

is started then it will go to the under Jobs tab.

Below Screen Shoot of History BO

Please go the Web Service Navigator of your SAP WAS Application server.

And find your web service.

Then press Next button and select the specified method to execute.

Now we have to provide the credentials the name of BO to restore with

merge indicator Y or N. If Y then the current data of the BO will merge

with old data of the BO and entry from the History Bo will be deleted.

If N then if the BO if some data is their first archive the data and

restore the old data if no data is their then it will load the old data

and entry form the History BO will be deleted.

Please collect the BO name from the History BO the Id filed value.

Then press Next button.

Now to check whether the data will restore or not go to the

CAF service browser and double click the BOToArchive CAF BO.

Now if we go to the History BO it will be empty.

To get the SAP WAS Application server name via code you have to writhe below code.

http://java.sun.com

http://help.sap.com