Accessing eXcelon from Java

 Java/J2EE COM Interoperability Products Page

This example demonstrates how to access eXcelon from Java. J-Integra® for COM is a Java interoperability component that bridges Java and eXcelon. It provides bi-directional access of Java objects and COM components. 

// Example of talking to ODI's eXcelon XML data server from Java. Built for eXcelon 1.1. 
// 
// Uses the J-Integra® pure Java-COM bridge.  See http://j-integra.intrinsyc.com/ for kit and doc. 
// 
// To run this example: 
// Create an 'excelon' subdirectory.  Run 'com2java' on \ODI\excelon1.1\bin\xlnpapi.dll 
// specifying 'excelon' as the package name, and the 'excelon' subdirectory as the output 
// directory.  Set the "Attempt non-duals" option in the "Options" dialog. 
// 
// Configure a surrogate for the XlnProxyDispenser by running the SETDLLHOST tool, 
// specifying \ODI\excelon1.1\bin\xlnpapi.dll "eXcelon Class" as parameters. 
 
public class ExcelonClient { 
 
  public static void main(String args[]) throws Exception { 
    try { 
      // This line can be left commented if you are running this Java client under Windows and the J-Integra® 'bin' 
      // directory is in your PATH. 
      // com.linar.jintegra.AuthInfo.setDefault("NT DOMAIN", "NT USER", "NT PASSWORD"); 
 
      // If not accessing Excelon locally then run DCOMCNFG on the machine running Excelon 
      // and grant default launch and access permissions to the above user (if you uncomment that 
      // line), or the NT user you are running the Java client as. 
 
      // Uncomment this line to get the J-Integra® runtime to log to a file 
      // com.linar.jintegra.Log.logImmediately(3, new java.io.PrintStream(new java.io.FileOutputStream("jintegra.log"))); 
 
      // Optional parameter specifies name of machine running the Excelon server you want 
      // to talk to. 
      excelon.IXlnDispenser eXcelon = new excelon.XlnProxyDispenser(); 
 
      String bindstr = "localhost"; 
      excelon.IXlnSession session = eXcelon.getSession(bindstr, 0); 
      excelon.IXlnSystem system = eXcelon.getSystem(bindstr, 0); 
 
      Object[] stores = (Object[]) system.getStoreInfo(); 
      for (int i = 0; i < stores.length; i++) { 
        excelon.IXlnStoreInfo storeInfo = new excelon.IXlnStoreInfoProxy(stores[i]); 
        println(0, "Store: " + storeInfo.getName()); // println is below - for indented output 
        displayDirectory(session, storeInfo.getName() + ":", 1); 
      } 
    } finally { 
      com.linar.jintegra.Cleaner.releaseAll(); 
    } 
  } 
 
  static void displayDirectory(excelon.IXlnSession session, String directoryName, int level) throws java.io.IOException { 
    println(level, "Directory: " + directoryName); 
    Object[] directoryContent = (Object[]) session.getDirectoryContents(directoryName); 
    for (int i = 0; i < directoryContent.length; i++) { 
      excelon.IXlnItemInfo itemInfo = new excelon.IXlnItemInfoProxy(directoryContent[i]); 
      // Ugly name, but it is what is in the eXcelon type library 
      if (itemInfo.getType() == excelon. 
        __MIDL___MIDL_itf_intclient_0000_0004.XLN_DIRECTORY) { 
        displayDirectory(session, directoryName + "/" + itemInfo.getName(), level + 1); 
      } else { 
        println(level + 1, "Item: " + itemInfo.getName()); 
        println(level + 2, "Mime Type: " + itemInfo.getMimetype()); 
        println(level + 2, "Last Modified: " + itemInfo.getModificationDate()); 
        println(level + 2, "Size: " + itemInfo.getSize()); 
      } 
    } 
  } 
 
  static void println(int level, String item) { 
    for (int i = 0; i < level * 2; i++) { 
      System.out.print(" "); 
    } 
    System.out.println(item); 
  } 
}