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java/project - NetBeans Architecture Questions - NetBeans API Javadoc 5.0.0

NetBeans Architecture Answers for java/project module

WARNING: answering questions version 1.24 rather than the current 1.26.

Interfaces table

Group of java interfaces
Interface NameIn/OutStabilitySpecified in What Document?
JavaProjectAPIExportedOfficial

The Java Project API is actually entirely SPI and supplies useful implementations of Java-related functionality specific to the project system.

ProjectClassPathExtenderExportedUnder Development

Implemented by java/j2seproject and asked for by form. Permits the Form Editor to add JavaBeans archives to the classpath of a J2SE project automatically.

ProjectClassPathSupportExportedUnder Development

Support class containg helper method for creating ClassPathImplementation based on Ant properties.

FilesystemsImportedOfficial

Various purposes.

NodesImportedOfficial

Used for package view and perhaps for templates UI.

DatasystemsImportedOfficial

Miscellaneous internal purposes.

WizardsImportedOfficial

Implementation of Java-specific template wizards.

ProjectAPIImportedUnder Development

Various purposes.

JavaSupportAPIsImportedOfficial

Delegation of Java-specific queries.

AntModuleAPIImportedUnder Development

AntLogger implementation to hyperlink stack traces.

JavaPlatformAPIImportedUnder Development

Broken references correction GUI.

ProjectLibrariesAPIImportedUnder Development

Broken references correction GUI.

SearchAPIImportedUnder Development

Special searching semantics in the package view.

ProjectUIAPIImportedUnder Development

Various purposes; at least, template GUI.

GeneralQueriesAPIImportedUnder Development

API used for various purposes.

Group of layer interfaces
Interface NameIn/OutStabilitySpecified in What Document?
JavaModuleTemplatesImportedFriend

Temporary home to add project-specific wizard iterators to Java language templates. Planned to be done differently in the future.

Group of property interfaces
Interface NameIn/OutStabilitySpecified in What Document?
org.netbeans.spi.java.project.support.ui.packageView.TRUNCATE_PACKAGE_NAMESExportedPrivate

If set to true, displays a truncated version of Java package names, usually in the Projects tab.

org.netbeans.spi.java.project.support.ui.packageView.USE_TREE_VIEWExportedPrivate

If set to true, displays Java packages in a tree rather than a flat list, usually in the Projects tab.


General Information

    Question (arch-what): What is this project good for?

    Answer:

    Provides support infrastructure for projects working with the Java language.

    Question (arch-overall): Describe the overall architecture.

    Answer:
    • JavaProjectAPI -

      The Java Project API is actually entirely SPI and supplies useful implementations of Java-related functionality specific to the project system.

    • ProjectClassPathExtender -

      Implemented by java/j2seproject and asked for by form. Permits the Form Editor to add JavaBeans archives to the classpath of a J2SE project automatically.

      ProjectClassPathSupport -

      Support class containg helper method for creating ClassPathImplementation based on Ant properties.

    Question (arch-usecases): Describe the main use cases of the new API. Who will use it under what circumstances? What kind of code would typically need to be written to use the module?

    Answer:

    Project type providers wishing to show Java packages in their logical views can use this SPI. Templates which are Java-centric can use it. Projects which wish to implement queries from the Java Support APIs can place implementations in their lookup and these will be delegated to automatically.

    Question (arch-time): What are the time estimates of the work?

    Answer:

    Complete.

    Question (arch-quality): How will the quality of your code be tested and how are future regressions going to be prevented?

    Answer:

    Non-GUI portions (including node-based UI) ought to be covered by unit tests. GUI portions may be covered by IDE-wide functional tests.

    Question (arch-where): Where one can find sources for your module?

    WARNING: Question with id="arch-where" has not been answered!

Project and platform dependencies


Deployment

    Question (deploy-jar): Do you deploy just module JAR file(s) or other files as well?

    Answer:

    Just a JAR.

    Question (deploy-nbm): Can you deploy an NBM via the Update Center?

    Answer:

    Yes.

    Question (deploy-shared): Do you need to be installed in the shared location only, or in the user directory only, or can your module be installed anywhere?

    Answer:

    Anywhere.

    Question (deploy-packages): Are packages of your module made inaccessible by not declaring them public?

    Answer:

    Only API and SPI packages are exported as public.

    Question (deploy-dependencies): What do other modules need to do to declare a dependency on this one?

    Answer:

    For normal usage:

       OpenIDE-Module-Module-Dependencies: org.netbeans.modules.java.project/1 > 1.8.1
      

Compatibility with environment

    Question (compat-i18n): Is your module correctly internationalized?

    Answer:

    Yes.

    Question (compat-standards): Does the module implement or define any standards? Is the implementation exact or does it deviate somehow?

    Answer:

    No.

    Question (compat-version): Can your module coexist with earlier and future versions of itself? Can you correctly read all old settings? Will future versions be able to read your current settings? Can you read or politely ignore settings stored by a future version?

    Answer:

    No settings.


Access to resources

    Question (resources-file): Does your module use java.io.File directly?

    Answer:

    In a few places as circumstances require.

    Question (resources-layer): Does your module provide own layer? Does it create any files or folders in it? What it is trying to communicate by that and with which components?

    Answer:

    Registers iterators for Java templates. Also registers context menu actions for Java source files. Registers a couple of options, and adds an action to the Projects tab to switch package display style.

    Question (resources-read): Does your module read any resources from layers? For what purpose?

    Answer:

    No.

    Question (resources-mask): Does your module mask/hide/override any resources provided by other modules in their layers?

    Answer:

    Registers iterators for Java templates.


Lookup of components

    Question (lookup-lookup): Does your module use org.openide.util.Lookup or any similar technology to find any components to communicate with? Which ones?

    Answer:

    Delegating query implementations search project lookups for their delegates. PackageViewChildren.PackageNode.setName() looks for one instance of org.netbeans.spi.java.project.support.ui.PackageRenameHandler.

    Question (lookup-register): Do you register anything into lookup for other code to find?

    Answer:

    Delegating query implementations are registered to global lookup. The AntLogger used for stack trace hyperlinking is registered.

    Question (lookup-remove): Do you remove entries of other modules from lookup?

    Answer:

    No.


Execution Environment


Format of files and protocols

    Question (format-types): Which protocols and file formats (if any) does your module read or write on disk, or transmit or receive over the network? Do you generate an ant build script? Can it be edited and modified?

    Answer:

    None.

    Question (format-dnd): Which protocols (if any) does your code understand during Drag & Drop?

    Answer:

    None.

    Question (format-clipboard): Which data flavors (if any) does your code read from or insert to the clipboard (by access to clipboard on means calling methods on java.awt.datatransfer.Transferable?

    Answer:

    None. Behavior of package view with respect to the clipboard has not been fully specified.


Performance and Scalability

    Question (perf-startup): Does your module run any code on startup?

    Answer:

    Replaces actions for Java source file context menus.

    Question (perf-exit): Does your module run any code on exit?

    Answer:

    No.

    Question (perf-scale): Which external criteria influence the performance of your program (size of file in editor, number of files in menu, in source directory, etc.) and how well your code scales?

    Answer:

    Number of subpackages for the package view (since they are all displayed in a list).

    Question (perf-limit): Are there any hard-coded or practical limits in the number or size of elements your code can handle?

    Answer:

    None known.

    Question (perf-mem): How much memory does your component consume? Estimate with a relation to the number of windows, etc.

    Answer:

    Should not be large. Not measured in case of package view.

    Question (perf-wakeup): Does any piece of your code wake up periodically and do something even when the system is otherwise idle (no user interaction)?

    Answer:

    No.

    Question (perf-progress): Does your module execute any long-running tasks?

    Answer:

    The package view currently finds subpackages synchronously but this could probably be rewritten to run asynchronously.

    Question (perf-huge_dialogs): Does your module contain any dialogs or wizards with a large number of GUI controls such as combo boxes, lists, trees, or text areas?

    Answer:

    No, only template wizard panels.

    Question (perf-menus): Does your module use dynamically updated context menus, or context-sensitive actions with complicated and slow enablement logic?

    Answer:

    No.

    Question (perf-spi): How the performance of the plugged in code will be enforced?

    Answer:

    No special provisions.


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