java/spi.java.hints/arch.xml

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<!DOCTYPE api-answers PUBLIC "-//NetBeans//DTD Arch Answers//EN" "../../nbbuild/antsrc/org/netbeans/nbbuild/Arch.dtd" [
  <!ENTITY api-questions SYSTEM "../../nbbuild/antsrc/org/netbeans/nbbuild/Arch-api-questions.xml">
]>

<api-answers
  question-version="1.29"
  author="jlahoda@netbeans.org"
>

  &api-questions;


<!--
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-->
 <answer id="arch-overall">
  <p>
   <api type="export" category="devel" group="java" name="spi.java.hints">
       SPI to create custom Java hints, including code smell warnings, productivity tips, etc.
       Please see the Use Cases section for a guide on how to use this SPI.
   </api>
  </p>
 </answer>



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            use cases</a> of the new API. Who will use it under
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        </question>
-->
 <answer id="arch-usecases">
  <p>
   <usecase id="creating" name="Creating a new Java Hint">
       Simple way to create a new Java hint is as follows:
       <ul>
           <li>Create a new class, annotate it with the <a href="@TOP@/org/netbeans/spi/java/hints/Hint.html">@Hint</a>
           annotation to it.</li>
           <li>Create a <code>public static ErrorDescription hint(HintContext ctx) {}</code> method in the
           class. Annotate the method either with the <a href="@TOP@/org/netbeans/spi/java/hints/TriggerPattern.html">@TriggerPattern</a>
           annotation (strongly recommended), or with the <a href="@TOP@/org/netbeans/spi/java/hints/TriggerTreeKind.html">@TriggerTreeKind</a>.
           This method will be called when for parts of the code that match the given pattern, of for trees of the specified kinds.</li>
           <li>Perform whatever checks necessary to find out whether a warning should be produced at the given place, and produce the ErrorDescription if needed.</li>
       </ul>
       <br/>
       Tips:
       <ul>
           <li>Always use the java.hints' <a href="@TOP@/org/netbeans/spi/java/hints/ErrorDescriptionFactory.html">ErrorDescriptionFactory</a> to produce the resulting ErrorDescription.</li>
           <li>Never try to produce a custom suppress warnings "fix". Specify suppress warnings keys in the @Hint annotation.</li>
           <li>If an automated transformation is to be prodived from your hint, subclass <a href="@TOP@/org/netbeans/spi/java/hints/JavaFix.html">JavaFix</a> and
               use its <code>toEditorFix()</code> method to get the <code>Fix</code>, if the transformation is going to be used inside Inspect&amp;Transform.
           </li>
           <li>The name of the method is arbitrary, one hint can consist of more that one "triggered" method.</li>
       </ul>
   </usecase>
   <usecase id="no-class" name="Creating a new Java Hint Without a Class">
       For simple hints, it is possible to annotate the hint method with the <a href="@TOP@/org/netbeans/spi/java/hints/Hint.html">@Hint</a> annotation.
       The hint then consists of this sole method. Any number of such hints may be created in a single class.
   </usecase>
   <usecase id="testing" name="Creating a Tests for the Newly Created Java Hint">
       Creating automated tests for the hints is simple: create a test class, and use
       <a href="@TOP@/../org-netbeans-modules-java-hints-test/org/netbeans/modules/java/hints/test/api/HintTest.html">HintTest</a>
       to setup the test, run the hint and verify that its outcomes are correct.
       The tests automatically run with <code>test</code> branding, so create <code>Bundle_test.properties</code>, and add
       bundle keys into it for ErrorDescription and Fix display names, to isolate the test from changes in the production
       <code>Bundle.properties</code>.
   </usecase>
   <usecase id="adding-options" name="Adding options to a Java Hint">
       To add a simple boolean option to your hint, use <a href="@TOP@/org/netbeans/spi/java/hints/BooleanOption.html">@BooleanOption</a>.
   </usecase>
  </p>
 </answer>



<!--
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  <defaultanswer generate='here' />
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 <answer id="compat-deprecation">
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            </hint>
        </question>
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  <defaultanswer generate='here' />
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  <p>
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            make sure that installation/uninstallation leaves the system 
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  <p>
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            Can you deploy an NBM via the Update Center?
            <hint>
            If not why?
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 <answer id="deploy-packages">
  <p>
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  </p>
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  <p>
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            (Class.isInstance(...), Class.isAssignableFrom(...), etc.).
            </hint>
        </question>
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  <p>
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        <question id="exec-property" when="impl">
            Is execution of your code influenced by any environment or
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            code, somebody will likely use it. You should describe what it does 
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            of this API. You may use
            <pre>
                &lt;api type="export" group="property" name="id" category="private" url="http://..."&gt;
                    description of the property, where it is used, what it influence, etc.
                &lt;/api&gt;            
            </pre>
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  <p>
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  <p>
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<!--
        <question id="perf-huge_dialogs" when="final">
            Does your module contain any dialogs or wizards with a large number of
            GUI controls such as combo boxes, lists, trees, or text areas?
        </question>
-->
 <answer id="perf-huge_dialogs">
  <p>
   XXX no answer for perf-huge_dialogs
  </p>
 </answer>



<!--
        <question id="perf-limit" when="init">
            Are there any hard-coded or practical limits in the number or size of
            elements your code can handle?
            <hint>
                Most of algorithms have increasing memory and speed complexity
                with respect to size of data they operate on. What is the critical
                part of your project that can be seen as a bottleneck with
                respect to speed or required memory? What are the practical
                sizes of data you tested your project with? What is your estimate
                of potential size of data that would cause visible performance
                problems? Is there some kind of check to detect such situation
                and prevent "hard" crashes - for example the CloneableEditorSupport
                checks for size of a file to be opened in editor
                and if it is larger than 1Mb it shows a dialog giving the
                user the right to decide - e.g. to cancel or commit suicide.
            </hint>
        </question>
-->
 <answer id="perf-limit">
  <p>
   XXX no answer for perf-limit
  </p>
 </answer>



<!--
        <question id="perf-mem" when="final">
            How much memory does your component consume? Estimate
            with a relation to the number of windows, etc.
        </question>
-->
 <answer id="perf-mem">
  <p>
   XXX no answer for perf-mem
  </p>
 </answer>



<!--
        <question id="perf-menus" when="final">
            Does your module use dynamically updated context menus, or
            context-sensitive actions with complicated and slow enablement logic?
            <hint>
                If you do a lot of tricks when adding actions to regular or context menus, you can significantly
                slow down display of the menu, even when the user is not using your action. Pay attention to
                actions you add to the main menu bar, and to context menus of foreign nodes or components. If
                the action is conditionally enabled, or changes its display dynamically, you need to check the
                impact on performance. In some cases it may be more appropriate to make a simple action that is
                always enabled but does more detailed checks in a dialog if it is actually run.
            </hint>
        </question>
-->
 <answer id="perf-menus">
  <p>
   XXX no answer for perf-menus
  </p>
 </answer>



<!--
        <question id="perf-progress" when="final">
            Does your module execute any long-running tasks?
            
            <hint>Long running tasks should never block 
            AWT thread as it badly hurts the UI
            <a href="http://performance.netbeans.org/responsiveness/issues.html">
            responsiveness</a>.
            Tasks like connecting over
            network, computing huge amount of data, compilation
            be done asynchronously (for example
            using <code>RequestProcessor</code>), definitively it should 
            not block AWT thread.
            </hint>
        </question>
-->
 <answer id="perf-progress">
  <p>
   XXX no answer for perf-progress
  </p>
 </answer>



<!--
        <question id="perf-scale" when="init">
            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?
            <hint>
            Please include some estimates, there are other more detailed 
            questions to answer in later phases of implementation. 
            </hint>
        </question>
-->
 <answer id="perf-scale">
  <p>
   XXX no answer for perf-scale
  </p>
 </answer>



<!--
        <question id="perf-spi" when="init">
            How the performance of the plugged in code will be enforced?
            <hint>
            If you allow foreign code to be plugged into your own module, how
            do you enforce that it will behave correctly and quickly and will not
            negatively influence the performance of your own module?
            </hint>
        </question>
-->
 <answer id="perf-spi">
  <p>
   XXX no answer for perf-spi
  </p>
 </answer>



<!--
        <question id="perf-startup" when="final">
            Does your module run any code on startup?
        </question>
-->
 <answer id="perf-startup">
  <p>
   XXX no answer for perf-startup
  </p>
 </answer>



<!--
        <question id="perf-wakeup" when="final">
            Does any piece of your code wake up periodically and do something
            even when the system is otherwise idle (no user interaction)?
        </question>
-->
 <answer id="perf-wakeup">
  <p>
   XXX no answer for perf-wakeup
  </p>
 </answer>



<!--
        <question id="resources-file" when="final">
            Does your module use <code>java.io.File</code> directly?
            
            <hint>
            NetBeans provide a logical wrapper over plain files called 
            <code>org.openide.filesystems.FileObject</code> that
            provides uniform access to such resources and is the preferred
            way that should be used. But of course there can be situations when
            this is not suitable.
            </hint>
        </question>
-->
 <answer id="resources-file">
  <p>
   XXX no answer for resources-file
  </p>
 </answer>



<!--
        <question id="resources-layer" when="final">
            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?
            
            <hint>
            NetBeans allows automatic and declarative installation of resources 
            by module layers. Module register files into appropriate places
            and other components use that information to perform their task
            (build menu, toolbar, window layout, list of templates, set of
            options, etc.). 
            </hint>
        </question>
-->
 <answer id="resources-layer">
  <p>
   XXX no answer for resources-layer
  </p>
 </answer>



<!--
        <question id="resources-mask" when="final">
            Does your module mask/hide/override any resources provided by other modules in
            their layers?
            
            <hint>
            If you mask a file provided by another module, you probably depend
            on that and do not want the other module to (for example) change
            the file's name. That module shall thus make that file available as an API
            of some stability category.
            </hint>
        </question>
-->
 <answer id="resources-mask">
  <p>
   XXX no answer for resources-mask
  </p>
 </answer>



<!--
        <question id="resources-preferences" when="final">
            Does your module uses preferences via Preferences API? Does your module use NbPreferences or
            or regular JDK Preferences ? Does it read, write or both ? 
            Does it share preferences with other modules ? If so, then why ?
            <hint>
                You may use
                    &lt;api type="export" group="preferences"
                    name="preference node name" category="private"&gt;
                    description of individual keys, where it is used, what it
                    influences, whether the module reads/write it, etc.
                    &lt;/api&gt;
                Due to XML ID restrictions, rather than /org/netbeans/modules/foo give the "name" as org.netbeans.modules.foo.
                Note that if you use NbPreferences this name will then be the same as the code name base of the module.
            </hint>
        </question>
-->
 <answer id="resources-preferences">
  <p>
   XXX no answer for resources-preferences
  </p>
 </answer>



<!--
        <question id="resources-read" when="final">
            Does your module read any resources from layers? For what purpose?
            
            <hint>
            As this is some kind of intermodule dependency, it is a kind of API.
            Please describe it and classify according to 
            <a href="http://openide.netbeans.org/tutorial/api-design.html#categories">
            common stability categories</a>.
            </hint>
        </question>
-->
 <answer id="resources-read">
  <p>
   XXX no answer for resources-read
  </p>
 </answer>



<!--
        <question id="security-grant" when="final">
            Does your code grant additional rights to some other code?
            <hint>Avoid using a class loader that adds extra
            permissions to loaded code unless really necessary.
            Also note that your API implementation
            can also expose unneeded permissions to enemy code by
            calling AccessController.doPrivileged().</hint>
        </question>
-->
 <answer id="security-grant">
  <p>
   XXX no answer for security-grant
  </p>
 </answer>



<!--
        <question id="security-policy" when="final">
            Does your functionality require modifications to the standard policy file?
            <hint>Your code might pass control to third-party code not
            coming from trusted domains. This could be code downloaded over the
            network or code coming from libraries that are not bundled
            with NetBeans. Which permissions need to be granted to which domains?</hint>
        </question>
-->
 <answer id="security-policy">
  <p>
   XXX no answer for security-policy
  </p>
 </answer>

</api-answers>