Ejemplo n.º 1
1
  /**
   * ABAP APIs often uses complex parameters. This example demonstrates how to read the values from
   * a structure.
   *
   * @throws com.sap.conn.jco.JCoException
   */
  public static void step3WorkWithStructure() throws JCoException {
    JCoDestination destination = JCoDestinationManager.getDestination(ABAP_AS_POOLED);
    JCoFunction function = destination.getRepository().getFunction("RFC_SYSTEM_INFO");
    if (function == null) throw new RuntimeException("RFC_SYSTEM_INFO not found in SAP.");

    try {
      function.execute(destination);
    } catch (AbapException e) {
      System.out.println(e.toString());
      return;
    }

    JCoStructure exportStructure = function.getExportParameterList().getStructure("RFCSI_EXPORT");
    System.out.println("System info for " + destination.getAttributes().getSystemID() + ":\n");

    // The structure contains some fields. The loop just prints out each field with its name.
    for (int i = 0; i < exportStructure.getMetaData().getFieldCount(); i++) {
      System.out.println(
          exportStructure.getMetaData().getName(i) + ":\t" + exportStructure.getString(i));
    }
    System.out.println();

    // JCo still supports the JCoFields, but direct access via getXXX is more efficient as field
    // iterator
    System.out.println(
        "The same using field iterator: \nSystem info for "
            + destination.getAttributes().getSystemID()
            + ":\n");
    for (JCoField field : exportStructure) {
      System.out.println(field.getName() + ":\t" + field.getString());
    }
    System.out.println();
  }
Ejemplo n.º 2
0
  /**
   * The following example executes a simple RFC function STFC_CONNECTION. In contrast to JCo 2 you
   * do not need to take care of repository management. JCo 3 manages the repository caches
   * internally and shares the available function metadata as much as possible.
   *
   * @throws com.sap.conn.jco.JCoException
   */
  public static void step3SimpleCall() throws JCoException {
    // JCoDestination is the logic address of an ABAP system and ...
    JCoDestination destination = JCoDestinationManager.getDestination(ABAP_AS_POOLED);
    // ... it always has a reference to a metadata repository
    JCoFunction function = destination.getRepository().getFunction("STFC_CONNECTION");
    if (function == null) throw new RuntimeException("BAPI_COMPANYCODE_GETLIST not found in SAP.");

    // JCoFunction is container for function values. Each function contains separate
    // containers for import, export, changing and table parameters.
    // To set or get the parameters use the APIS setValue() and getXXX().
    function.getImportParameterList().setValue("REQUTEXT", "Hello SAP");

    try {
      // execute, i.e. send the function to the ABAP system addressed
      // by the specified destination, which then returns the function result.
      // All necessary conversions between Java and ABAP data types
      // are done automatically.
      function.execute(destination);
    } catch (AbapException e) {
      System.out.println(e.toString());
      return;
    }

    System.out.println("STFC_CONNECTION finished:");
    System.out.println(" Echo: " + function.getExportParameterList().getString("ECHOTEXT"));
    System.out.println(" Response: " + function.getExportParameterList().getString("RESPTEXT"));
    System.out.println();
  }
Ejemplo n.º 3
0
 /**
  * Default constructor.
  *
  * @param destination the RFC destination to use to obtain the table structure and contents
  * @param tableName the name of the database table
  * @throws JCoException
  */
 public TableReader(JCoDestination destination, String tableName) throws JCoException {
   super();
   this.destination = destination;
   this.tableName = tableName;
   this.template =
       destination.getRepository().getFunctionTemplate("RFC_READ_TABLE"); // $NON-NLS-1$
   loadStructure();
 }
Ejemplo n.º 4
0
  /**
   * this example shows the "simple" stateful call sequence. Since all calls belonging to one
   * session are executed within the same thread, the application does not need to take into account
   * the SessionReferenceProvider. MultithreadedExample.java illustrates the more complex scenario,
   * where the calls belonging to one session are executed in different threads.
   *
   * <p>Note: this example uses Z_GET_COUNTER and Z_INCREMENT_COUNTER. Most ABAP systems contain
   * function modules GET_COUNTER and INCREMENT_COUNTER that are not remote-enabled. Copy these
   * functions to Z_GET_COUNTER and Z_INCREMENT_COUNTER (or implement as wrapper) and declare them
   * to be remote enabled.
   *
   * @throws com.sap.conn.jco.JCoException
   */
  public static void step4SimpleStatefulCalls() throws JCoException {
    final JCoFunctionTemplate incrementCounterTemplate, getCounterTemplate;

    JCoDestination destination = JCoDestinationManager.getDestination(ABAP_MS);
    incrementCounterTemplate =
        destination.getRepository().getFunctionTemplate("Z_INCREMENT_COUNTER");
    getCounterTemplate = destination.getRepository().getFunctionTemplate("Z_GET_COUNTER");
    if (incrementCounterTemplate == null || getCounterTemplate == null)
      throw new RuntimeException(
          "This example cannot run without Z_INCREMENT_COUNTER and Z_GET_COUNTER functions");

    final int threadCount = 5;
    final int loops = 5;
    final CountDownLatch startSignal = new CountDownLatch(threadCount);
    final CountDownLatch doneSignal = new CountDownLatch(threadCount);

    Runnable worker =
        new Runnable() {
          public void run() {
            startSignal.countDown();
            try {
              // wait for other threads
              startSignal.await();

              JCoDestination dest = JCoDestinationManager.getDestination(ABAP_MS);
              JCoContext.begin(dest);
              try {
                for (int i = 0; i < loops; i++) {
                  JCoFunction incrementCounter = incrementCounterTemplate.getFunction();
                  incrementCounter.execute(dest);
                }
                JCoFunction getCounter = getCounterTemplate.getFunction();
                getCounter.execute(dest);

                int remoteCounter = getCounter.getExportParameterList().getInt("GET_VALUE");
                System.out.println(
                    "Thread-"
                        + Thread.currentThread().getId()
                        + " finished. Remote counter has "
                        + (loops == remoteCounter ? "correct" : "wrong")
                        + " value ["
                        + remoteCounter
                        + "]");
              } finally {
                JCoContext.end(dest);
              }
            } catch (Exception e) {
              System.out.println(
                  "Thread-"
                      + Thread.currentThread().getId()
                      + " ends with exception "
                      + e.toString());
            }

            doneSignal.countDown();
          }
        };

    for (int i = 0; i < threadCount; i++) {
      new Thread(worker).start();
    }

    try {
      doneSignal.await();
    } catch (Exception e) {
    }
  }
Ejemplo n.º 5
0
  /**
   * A slightly more complex example than before. Query the companies list returned in a table and
   * then obtain more details for each company.
   *
   * @throws com.sap.conn.jco.JCoException
   */
  public static void step4WorkWithTable() throws JCoException {
    JCoDestination destination = JCoDestinationManager.getDestination(ABAP_AS_POOLED);
    JCoFunction function = destination.getRepository().getFunction("BAPI_COMPANYCODE_GETLIST");
    if (function == null) throw new RuntimeException("BAPI_COMPANYCODE_GETLIST not found in SAP.");

    try {
      function.execute(destination);
    } catch (AbapException e) {
      System.out.println(e.toString());
      return;
    }

    JCoStructure returnStructure = function.getExportParameterList().getStructure("RETURN");
    if (!(returnStructure.getString("TYPE").equals("")
        || returnStructure.getString("TYPE").equals("S"))) {
      throw new RuntimeException(returnStructure.getString("MESSAGE"));
    }

    JCoTable codes = function.getTableParameterList().getTable("COMPANYCODE_LIST");
    for (int i = 0; i < codes.getNumRows(); i++) {
      codes.setRow(i);
      System.out.println(codes.getString("COMP_CODE") + '\t' + codes.getString("COMP_NAME"));
    }

    // move the table cursor to first row
    codes.firstRow();
    for (int i = 0; i < codes.getNumRows(); i++, codes.nextRow()) {
      function = destination.getRepository().getFunction("BAPI_COMPANYCODE_GETDETAIL");
      if (function == null)
        throw new RuntimeException("BAPI_COMPANYCODE_GETDETAIL not found in SAP.");

      function.getImportParameterList().setValue("COMPANYCODEID", codes.getString("COMP_CODE"));

      // We do not need the addresses, so set the corresponding parameter to inactive.
      // Inactive parameters will be  either not generated or at least converted.
      function.getExportParameterList().setActive("COMPANYCODE_ADDRESS", false);

      try {
        function.execute(destination);
      } catch (AbapException e) {
        System.out.println(e.toString());
        return;
      }

      returnStructure = function.getExportParameterList().getStructure("RETURN");
      if (!(returnStructure.getString("TYPE").equals("")
          || returnStructure.getString("TYPE").equals("S")
          || returnStructure.getString("TYPE").equals("W"))) {
        throw new RuntimeException(returnStructure.getString("MESSAGE"));
      }

      JCoStructure detail = function.getExportParameterList().getStructure("COMPANYCODE_DETAIL");

      System.out.println(
          detail.getString("COMP_CODE")
              + '\t'
              + detail.getString("COUNTRY")
              + '\t'
              + detail.getString("CITY"));
    } // for
  }
Ejemplo n.º 6
0
  public void run(ProcedureRunner runner) throws Exception {
    CompositeMap context = runner.getContext();
    logger = LoggingContext.getLogger(context, LOGGING_TOPIC);
    logger.config("jco-invoke");
    logger.config("===================================");
    logger.log(Level.CONFIG, "config:{0}", new Object[] {this});

    ServiceInstance service = (ServiceInstance) ServiceInstance.getInstance(context.getRoot());

    //		HttpServiceInstance service = (HttpServiceInstance) HttpServiceInstance
    //				.getInstance(context.getRoot());
    CompositeMap target = null;
    CompositeMap model = null;
    if (service != null) model = service.getServiceContext().getModel();
    else model = context.getRoot().getChild("model");
    if (model == null) model = context.getRoot().createChild("model");
    if (return_target != null) {
      String t = TextParser.parse(return_target, context);
      target = (CompositeMap) model.getObject(t);
      if (target == null) target = model.createChildByTag(t);
    }
    JCoDestination destination = sapConfig.getJCoDestination(sid);
    String functionName = function;

    JCoFunctionTemplate ftemplate = destination.getRepository().getFunctionTemplate(functionName);
    logger.info("function template:" + functionName);
    if (ftemplate == null) {
      logger.log(Level.SEVERE, "Function '" + function + "' not found in SAP system.");
      throw new IllegalArgumentException("Function '" + function + "' not found in SAP system.");
    }
    // Create a function from the template
    JCoFunction function = ftemplate.getFunction();
    JCoParameterList input = function.getImportParameterList();
    JCoParameterList output = function.getExportParameterList();
    if (parameters != null)
      for (int i = 0; i < parameters.length; i++) {
        Parameter param = parameters[i];
        if (param.Return_field == null) {
          Object o =
              param.Source_field == null ? param.Value : context.getObject(param.Source_field);
          String value = o == null ? "" : o.toString();
          input.setValue(param.Name, value);
          logger.log(Level.CONFIG, "parameter {0} -> {1}", new Object[] {param.Name, value});
        }
      }
    if (structures != null) {
      for (int i = 0; i < structures.length; i++) {
        Structure structure = structures[i];
        structure.setLogger(logger);
        if (structure.isImport()) {
          JCoStructure stc = structure.getJCOStructure(input);
          structure.fillJCOStructure(stc, context);
          input.setValue(structure.Name, stc);
        }
      }
    }
    // Set import table
    if (tables != null) {
      JCoParameterList list = function.getTableParameterList();
      for (int i = 0; i < tables.length; i++) {
        Table table = tables[i];
        table.setLogger(logger);
        if (table.isImport()) {
          JCoTable tbl = table.getJCOTable(list);
          Object o = context.getObject(table.Source_field);
          logger.config(
              "transfer import table " + table.Name + " from '" + table.Source_field + "':" + o);
          if (o instanceof CompositeMap) table.fillJCOTable(tbl, (CompositeMap) context);
        }
      }
    }

    // Call the remote system and retrieve return value
    logger.config("call function " + function);
    function.execute(destination);
    if (parameters != null) {
      for (int i = 0; i < parameters.length; i++) {
        Parameter param = parameters[i];
        if (param.Return_field != null) {
          if (target == null)
            throw new ConfigurationError(
                "<jco-invoke>:must set 'return_target' attribute if there is return field");
          String vl = output.getString(param.Name);
          if (vl == null && !param.Nullable)
            throw new IllegalArgumentException(
                "jco-invoke: return field " + param.Name + " is null");
          String f = TextParser.parse(param.Return_field, context);
          target.putObject(f, vl);
          logger.config("return: " + param.Name + "=" + vl + " -> " + f);
        }
      }
    }
    if (structures != null) {
      for (int i = 0; i < structures.length; i++) {
        Structure structure = structures[i];
        structure.setLogger(logger);
        if (structure.isImport()) continue;
        if (structure.Target == null)
          throw new ConfigurationError(
              "Must set 'target' attribute for Structures " + structure.Name);
        JCoStructure stc = structure.getJCOStructure(output);
        CompositeMap result = (CompositeMap) context.getObject(structure.Target);
        if (result == null) result = context.createChildByTag(structure.Target);
        structure.fillCompositeMap(stc, result);
      }
    }
    // Get export tables
    if (tables != null) {
      JCoParameterList list = function.getTableParameterList();
      if (list == null)
        throw new IllegalArgumentException("Function '" + function + "' doesn't return tables");
      for (int i = 0; i < tables.length; i++) {
        Table table = tables[i];
        if (table.isImport()) continue;
        if (table.Target == null)
          throw new ConfigurationError("Must set 'target' attribute for table " + table.Name);
        table.setLogger(logger);
        JCoTable records = table.getJCOTable(list);
        // Fetch as CompositeMap

        CompositeMap result = (CompositeMap) context.getObject(table.Target);
        if (result == null) result = context.createChildByTag(table.Target);
        table.fillCompositeMap(records, result);
        int rc = 0;
        if (result.getChilds() != null) rc = result.getChilds().size();
        logger.config(
            "loading export table "
                + table.Name
                + " into path '"
                + table.Target
                + "', total "
                + rc
                + " record(s)");
      }
    }
  }