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VisionX 5.11.615 is out

We're happy to announce VisionX 5.11.615

The new version is fully backwards compatible and contains many improvements. It also fixes some reported problems and brings new features. This version is the last version of series 5 and we didn't change bigger blocks. The 5.11.615 should be a great final version of VisionX 5. We already started development of VisionX 6 and it will bring some bigger changes because we'll update to Java 21. We also will update our embedded postgresql database. We'll update to our latest react based UI and also to latest mobile app. We have some great features in the pipeline for all of you.

... back to VisionX 5.11.615

What's new?

  • NEW calculated field
    Calculated field

    Calculated field

    Use this field for sum, average, min, max calculation or simple record counts. The calculated value can be changed after calculation or you can define custom formulas. It's on you. It's super easy to use and you can access the calculated fields in any action.

  • Actions and Functions

    Our new actions are:

    • Perform search

      If you have a "manual" Search button in your screen, automatic search is disable automatically. With this action it's possible to force search)

    • Download URL

      Save data from an URL.

    • Contains (value, search, case_sensitive)

      Checks if a search value is part of a specific value. case_sensitive means (B is not the same as b; but case insensitive means B is the same as b)

    • Starts with (value, search, case_sensitive)

      Checks if a value starts with a specific search value

    • Ends with (value, search, case_sensitive)
    • for loop with fixed number of iterations

      • Checks if a value ends with a specific search value

    Changed actions:

    • E-Mail
      It's now possible to set dynamic text as subject instead of fixed text.

    We have some totally useful new functions for you:

    • length (text)

      Counts the number of characters

    • substring (text, start)

      Creates a sub string from start to the end

    • substring (text, start, count)

      Creates a sub string from start and maximum count characters

    • countAll (column)

      Counts all records. Compared to count(column) which counts all records where the value is not empty.

    The description of an action shows possible functions as well:

    Detailed description

    Detailed description

  • Improved field selection
    Choose field

    Choose field

  • Messages now support feedback input

    Feedback input

    Feedback input

  • Changing license is now possible without "invalid license" warning
  • Changed some icons in elements area of visual designer
  • Creation of XML reports fixed

Starting with VisionX 5.11.615 it will be possible to use updates of following AddOns:

  • Embedding 1.8-4
  • Audit Log 1.2-11
  • REST 1.14-ea10
  • Query Editor 1.4.6

As usual, VisionX 5.11.615 is available in the download area for our customers or as trial.

Have fun!

categories Release notes | rjahn | 14/09/2024 | comments Comments (0)

categories

Adding new paths for native libraries at runtime in Java (part 2)

Part 1 of this article is available here.

Since Java 14, ClassLoader was changed a little bit and usr_paths it not available as field anymore. It's still possible to change the java.library.path at runtime, but it's still tricky and dirty:

Method getDeclaredFields0 =
    Class.class.getDeclaredMethod("getDeclaredFields0", boolean.class);
getDeclaredFields0.setAccessible(true);

Field[] fieldsClassLoader =
    (Field[])getDeclaredFields0.invoke(ClassLoader.class, Boolean.FALSE);

for (Field fldClassLoader : fieldsClassLoader) {
  if ("libraries".equals(fldClassLoader.getName())) {
    fldClassLoader.setAccessible(true);

    Class<?>[] classesClassLoader =
        fldClassLoader.getType().getDeclaredClasses();

    for (Class<?> clLibraryPaths : classesClassLoader) {
      if ("jdk.internal.loader.NativeLibraries$LibraryPaths".equals(
              clLibraryPaths.getName())) {
        Field[] fieldsLibraryPaths =
            (Field[])getDeclaredFields0.invoke(clLibraryPaths, Boolean.FALSE);

        for (Field fldLibPath : fieldsLibraryPaths) {
          if ("USER_PATHS".equals(fldLibPath.getName())) {
            final Field fldUsrPaths = fldLibPath;
            fldUsrPaths.setAccessible(true);

            // get array of paths
            final String[] saPath = (String[])fldUsrPaths.get(null);

            // check if the path to add is already present
            for (String path : saPath) {
              if (path.equals(pPath)) {
                return;
              }
            }

            // add the new path
            String[] saNewPaths = Arrays.copyOf(saPath, saPath.length + 1);
            saNewPaths[saNewPaths.length - 1] = pPath;

            Object unsafe;

            // Unsafe is a hack

            Class<?> clsUnsafe = Class.forName("sun.misc.Unsafe");

            final Field unsafeField = clsUnsafe.getDeclaredField("theUnsafe");
            unsafeField.setAccessible(true);
            unsafe = unsafeField.get(null);

            Method m1 = clsUnsafe.getMethod("staticFieldBase", Field.class);
            Method m2 = clsUnsafe.getMethod("staticFieldOffset", Field.class);

            Object fieldBase = m1.invoke(unsafe, fldUsrPaths);
            Long fieldOffset = (Long)m2.invoke(unsafe, fldUsrPaths);

            Method m3 = clsUnsafe.getMethod("putObject", Object.class,
                                            long.class, Object.class);

            m3.invoke(unsafe, fieldBase, fieldOffset, saNewPaths);
          }
        }
      }
    }

    return;
  }
}

Here's the complete solution: toPDF project (search for addLibraryPath(String pPath))

Above code requires:

--add-opens java.base/java.lang=ALL-UNNAMED
--add-opens java.base/jdk.internal.loader=ALL-UNNAMED

for JDK > 14.

categories Development | rjahn | 09/09/2024 | comments Comments (0)

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