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  1. JDK
  2. JDK-6606278

Refresh mechanism for deployment.properties from Windows registry

    Details

    • Type: Enhancement
    • Status: Closed
    • Priority: P2
    • Resolution: Fixed
    • Affects Version/s: 6u5, 6u10
    • Fix Version/s: 6u10
    • Component/s: deploy
    • Subcomponent:
    • Resolved In Build:
      b10
    • CPU:
      generic
    • OS:
      windows
    • Verification:
      Verified

      Backports

        Description

        Deployment.properties frequently gets out of date with respect to the
        installed JRE instances listed in the Windows registry. One reason for
        this is that the installer does not update or create
        deployment.properties.

        A piece of code is needed which queries the registry and populates
        deployment.properties with the JREs it finds. A button should be added
        to the Java Control Panel, Java Applet Runtime Parameters dialog (and
        perhaps the Java Application Runtime Parameters dialog as well) like
        "Rebuild From Registry" which will scan the registry and add entries
        for JREs that were in the registry but not in
        deployment.properties. (This needs to be made a user-selectable action
        rather than something that happens automatically each time, since the
        user might choose to remove a JRE from the Java Applet Runtime
        Settings and we don't want to force it on them again.)

        The installer should be modified so that if deployment.properties does
        not exist, it calls this code to generate it.
        After more thought, this can probably simply be added to the existing Config class. The native code Java Web Start has for this purpose is complicated and probably not necessary because we do not have the requirement that this code be pure C code. While it would be nice if the installer updated deployment.properties it isn't strictly necessary since both the new plug-in and control panel need to. Therefore what is really needed is code in the Config class which will rescan the registry and add discovered JREs to the JREInfo and PluginJavaInfo lists. Presumably the existing Config machinery for writing out deployment.properties can then be called.
        Additionally, the Config class should be modified to always return a JREInfo or PluginJavaInfo for the currently running JRE, even if it isn't in deployment.properties. A hack for this was added to the new plug-in's JVMManager class; see containsWorkingCurrentVersion() and calls to it. If this were pushed down into the Config class, along with the registry scanning on the Windows platform, then the Config class would be able to refresh deployment.properties equally as well as the native code in Java Web Start, and we could remove the associated code from the JVMManager class.

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                • Assignee:
                  hdongorcl Hao Dong (Inactive)
                  Reporter:
                  kbr Kenneth Russell (Inactive)
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