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arch.xml
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1113 lines (935 loc) · 35.1 KB
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<?xml version="1.0" encoding="UTF-8"?>
<!--
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied. See the License for the
specific language governing permissions and limitations
under the License.
-->
<!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="1.28"
module="Java Source Queries"
author="tzezula@netbeans.org"
>
&api-questions;
<!--
<question id="arch-overall" when="init">
Describe the overall architecture.
<hint>
What will be API for
<a href="http://openide.netbeans.org/tutorial/api-design.html#design.apiandspi">
clients and what support API</a>?
What parts will be pluggable?
How will plug-ins be registered? Please use <code><api type="export"/></code>
to describe your general APIs and specify their
<a href="http://openide.netbeans.org/tutorial/api-design.html#category-private">
stability categories</a>.
If possible please provide simple diagrams.
</hint>
</question>
-->
<answer id="arch-overall">
<p>
<api group="java" name="JavaSourceQueries" type="export" category="friend">
Provides a friend API indemendent on the Javac allowing the form editor
to do basic queries and modifications of java source file.
</api>
</p>
</answer>
<!--
<question id="arch-quality" when="init">
How will the <a href="http://www.netbeans.org/community/guidelines/q-evangelism.html">quality</a>
of your code be tested and
how are future regressions going to be prevented?
<hint>
What kind of testing do
you want to use? How much functionality, in which areas,
should be covered by the tests? How you find out that your
project was successful?
</hint>
</question>
-->
<answer id="arch-quality">
<p>
The API as well as SPI implementations are covered by unit tests.
</p>
</answer>
<!--
<question id="arch-time" when="init">
What are the time estimates of the work?
<hint>
Please express your estimates of how long the design, implementation,
stabilization are likely to last. How many people will be needed to
implement this and what is the expected milestone by which the work should be
ready?
</hint>
</question>
-->
<answer id="arch-time">
<p>
Both API ans SPI will evolve depending on form editor use cases.
</p>
</answer>
<!--
<question id="arch-usecases" when="init">
<hint>
Content of this answer will be displayed as part of page at
http://www.netbeans.org/download/dev/javadoc/usecases.html
You can use tags <usecase name="name> regular html description </usecase>
and if you want to use an URL you can prefix if with @TOP@ to begin
at the root of your javadoc
</hint>
Describe the main <a href="http://openide.netbeans.org/tutorial/api-design.html#usecase">
use cases</a> 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?
</question>
-->
<answer id="arch-usecases">
<p>
The form does not depend on the javac based model. It runs on the top of the
Java Source Queries abstraction.
</p>
</answer>
<!--
<question id="arch-what" when="init">
What is this project good for?
<hint>
Please provide here a few lines describing the project,
what problem it should solve, provide links to documentation,
specifications, etc.
</hint>
</question>
-->
<answer id="arch-what">
<p>
Provides javac independent model for form editor.
</p>
</answer>
<!--
<question id="arch-where" when="impl">
Where one can find sources for your module?
<hint>
Please provide link to the CVS web client at
http://www.netbeans.org/download/source_browse.html
or just use tag defaultanswer generate='here'
</hint>
</question>
-->
<answer id="arch-where">
<defaultanswer generate='here' />
</answer>
<!--
<question id="compat-deprecation" when="init">
How the introduction of your project influences functionality
provided by previous version of the product?
<hint>
If you are planning to deprecate/remove/change any existing APIs,
list them here accompanied with the reason explaining why you
are doing so.
</hint>
</question>
-->
<answer id="compat-deprecation">
<p>
No influence.
</p>
</answer>
<!--
<question id="compat-i18n" when="impl">
Is your module correctly internationalized?
<hint>
Correct internationalization means that it obeys instructions
at <a href="http://www.netbeans.org/download/dev/javadoc/org-openide-modules/org/openide/modules/doc-files/i18n-branding.html">
NetBeans I18N pages</a>.
</hint>
</question>
-->
<answer id="compat-i18n">
<p>
The module is I18N correct.
</p>
</answer>
<!--
<question id="compat-standards" when="init">
Does the module implement or define any standards? Is the
implementation exact or does it deviate somehow?
</question>
-->
<answer id="compat-standards">
<p>
No.
</p>
</answer>
<!--
<question id="compat-version" when="impl">
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?
<hint>
Very helpful for reading settings is to store version number
there, so future versions can decide whether how to read/convert
the settings and older versions can ignore the new ones.
</hint>
</question>
-->
<answer id="compat-version">
<p>
No settings.
</p>
</answer>
<!--
<question id="dep-jre" when="final">
Which version of JRE do you need (1.2, 1.3, 1.4, etc.)?
<hint>
It is expected that if your module runs on 1.x that it will run
on 1.x+1 if no, state that please. Also describe here cases where
you run different code on different versions of JRE and why.
</hint>
</question>
-->
<answer id="dep-jre">
<p>
1.6+
</p>
</answer>
<!--
<question id="dep-jrejdk" when="final">
Do you require the JDK or is the JRE enough?
</question>
-->
<answer id="dep-jrejdk">
<p>
JRE
</p>
</answer>
<!--
<question id="dep-nb" when="init">
What other NetBeans projects and modules does this one depend on?
<hint>
Depending on other NetBeans projects influnces the ability of
users of your work to customize their own branded version of
NetBeans by enabling and disabling some modules. Too
much dependencies restrict this kind of customization. If that
is your case, then you may want to split your functionality into
pieces of autoload, eager and regular modules which can be
enabled independently. Usually the answer to this question
is generated from your <code>project.xml</code> file, but
if it is not guessed correctly, you can suppress it by
specifying <defaultanswer generate="none"/> and
write here your own. Please describe such projects as imported APIs using
the <code><api name="identification" type="import or export" category="stable" url="where is the description" /></code>.
By doing this information gets listed in the summary page of your
javadoc.
</hint>
</question>
-->
<answer id="dep-nb">
<defaultanswer generate='none' />
<ul>
<li><api type='import' group='java' category='official' name='org.openide.util'>
The module is needed for compilation.
The module is used during runtime.
</api>
</li>
<li><api type='import' group='java' category='official' name='org.openide.util.lookup'>
The module is needed for compilation.
The module is used during runtime.
</api>
</li>
</ul>
</answer>
<!--
<question id="dep-non-nb" when="init">
What other projects outside NetBeans does this one depend on?
<hint>
Depending on 3rd party libraries is always problematic,
especially if they are not open source, as that complicates
the licensing scheme of NetBeans. Please enumerate your
external dependencies here, so it is correctly understood since
the begining what are the legal implications of your project.
Also please note that
some non-NetBeans projects are packaged as NetBeans modules
(see <a href="http://libs.netbeans.org/">libraries</a>) and
it is preferred to use this approach when more modules may
depend and share such third-party libraries.
</hint>
</question>
-->
<answer id="dep-non-nb">
<p>
No.
</p>
</answer>
<!--
<question id="dep-platform" when="init">
On which platforms does your module run? Does it run in the same
way on each?
<hint>
If you plan any dependency on OS or any usage of native code,
please describe why you are doing so and describe how you envision
to enforce the portability of your code.
Please note that there is a support for <a href="http://www.netbeans.org/download/dev/javadoc/org-openide-modules/org/openide/modules/doc-files/api.html#how-os-specific">OS conditionally
enabled modules</a> which together with autoload/eager modules
can allow you to enable to provide the best OS aware support
on certain OSes while providing compatibility bridge on the not
supported ones.
Also please list the supported
OSes/HW platforms and mentioned the lovest version of JDK required
for your project to run on. Also state whether JRE is enough or
you really need JDK.
</hint>
</question>
-->
<answer id="dep-platform">
<p>
Any.
</p>
</answer>
<!--
<question id="deploy-dependencies" when="final">
What do other modules need to do to declare a dependency on this one,
in addition to or instead of the normal module dependency declaration
(e.g. tokens to require)?
<hint>
Provide a sample of the actual lines you would add to a module manifest
to declare a dependency, for example OpenIDE-Module-Requires: some.token.
If other modules should not depend on this module, or should just use a
simple regular module dependency, you can just answer "nothing". If you
intentionally expose a semistable API to clients using implementation
dependencies, you should mention that here (but there is no need to give
an example of usage).
</hint>
</question>
-->
<answer id="deploy-dependencies">
<p>
Nothing.
</p>
</answer>
<!--
<question id="deploy-jar" when="impl">
Do you deploy just module JAR file(s) or other files as well?
<hint>
Usually a module consist of one JAR file (perhaps with Class-Path
extensions) and also a configuration file that enables it. If you
have any other files, use
<api group="java.io.File" name="yourname" type="export" category="friend">...</api>
to define the location, name and stability of your files (of course
changing "yourname" and "friend" to suit your needs).
If it uses more than one JAR, describe where they are located, how
they refer to each other.
If it consist of module JAR(s) and other files, please describe
what is their purpose, why other files are necessary. Please
make sure that installation/uninstallation leaves the system
in state as it was before installation.
</hint>
</question>
-->
<answer id="deploy-jar">
<p>
Just a Jar.
</p>
</answer>
<!--
<question id="deploy-nbm" when="impl">
Can you deploy an NBM via the Update Center?
<hint>
If not why?
</hint>
</question>
-->
<answer id="deploy-nbm">
<p>
Yes.
</p>
</answer>
<!--
<question id="deploy-packages" when="init">
Are packages of your module made inaccessible by not declaring them
public?
<hint>
By default NetBeans build harness treats all packages are private.
If you export some of them - either as public or friend packages,
you should have a reason. If the reason is described elsewhere
in this document, you can ignore this question.
</hint>
</question>
-->
<answer id="deploy-packages">
<p>
Only API and SPI packages are exported as public.
</p>
</answer>
<!--
<question id="deploy-shared" when="final">
Do you need to be installed in the shared location only, or in the user directory only,
or can your module be installed anywhere?
<hint>
Installation location shall not matter, if it does explain why.
Consider also whether <code>InstalledFileLocator</code> can help.
</hint>
</question>
-->
<answer id="deploy-shared">
<p>
Anywhere.
</p>
</answer>
<!--
<question id="exec-ant-tasks" when="impl">
Do you define or register any ant tasks that other can use?
<hint>
If you provide an ant task that users can use, you need to be very
careful about its syntax and behaviour, as it most likely forms an
API for end users and as there is a lot of end users, their reaction
when such API gets broken can be pretty strong.
</hint>
</question>
-->
<answer id="exec-ant-tasks">
<p>
No.
</p>
</answer>
<!--
<question id="exec-classloader" when="impl">
Does your code create its own class loader(s)?
<hint>
A bit unusual. Please explain why and what for.
</hint>
</question>
-->
<answer id="exec-classloader">
<p>
No.
</p>
</answer>
<!--
<question id="exec-component" when="impl">
Is execution of your code influenced by any (string) property
of any of your components?
<hint>
Often <code>JComponent.getClientProperty</code>, <code>Action.getValue</code>
or <code>PropertyDescriptor.getValue</code>, etc. are used to influence
a behavior of some code. This of course forms an interface that should
be documented. Also if one depends on some interface that an object
implements (<code>component instanceof Runnable</code>) that forms an
API as well.
</hint>
</question>
-->
<answer id="exec-component">
<p>
No.
</p>
</answer>
<!--
<question id="exec-introspection" when="impl">
Does your module use any kind of runtime type information (<code>instanceof</code>,
work with <code>java.lang.Class</code>, etc.)?
<hint>
Check for cases when you have an object of type A and you also
expect it to (possibly) be of type B and do some special action. That
should be documented. The same applies on operations in meta-level
(Class.isInstance(...), Class.isAssignableFrom(...), etc.).
</hint>
</question>
-->
<answer id="exec-introspection">
<p>
No.
</p>
</answer>
<!--
<question id="exec-privateaccess" when="final">
Are you aware of any other parts of the system calling some of
your methods by reflection?
<hint>
If so, describe the "contract" as an API. Likely private or friend one, but
still API and consider rewrite of it.
</hint>
</question>
-->
<answer id="exec-privateaccess">
<p>
No.
</p>
</answer>
<!--
<question id="exec-process" when="impl">
Do you execute an external process from your module? How do you ensure
that the result is the same on different platforms? Do you parse output?
Do you depend on result code?
<hint>
If you feed an input, parse the output please declare that as an API.
</hint>
</question>
-->
<answer id="exec-process">
<p>
No.
</p>
</answer>
<!--
<question id="exec-property" when="impl">
Is execution of your code influenced by any environment or
Java system (<code>System.getProperty</code>) property?
<hint>
If there is a property that can change the behavior of your
code, somebody will likely use it. You should describe what it does
and the <a href="http://openide.netbeans.org/tutorial/api-design.html#life">stability category</a>
of this API. You may use
<pre>
<api type="export" group="property" name="id" category="private" url="http://...">
description of the property, where it is used, what it influence, etc.
</api>
</pre>
</hint>
</question>
-->
<answer id="exec-property">
<p>
No.
</p>
</answer>
<!--
<question id="exec-reflection" when="impl">
Does your code use Java Reflection to execute other code?
<hint>
This usually indicates a missing or insufficient API in the other
part of the system. If the other side is not aware of your dependency
this contract can be easily broken.
</hint>
</question>
-->
<answer id="exec-reflection">
<p>
No.
</p>
</answer>
<!--
<question id="exec-threading" when="init">
What threading models, if any, does your module adhere to? How the
project behaves with respect to threading?
<hint>
Is your API threadsafe? Can it be accessed from any threads or
just from some dedicated ones? Any special relation to AWT and
its Event Dispatch thread? Also
if your module calls foreign APIs which have a specific threading model,
indicate how you comply with the requirements for multithreaded access
(synchronization, mutexes, etc.) applicable to those APIs.
If your module defines any APIs, or has complex internal structures
that might be used from multiple threads, declare how you protect
data against concurrent access, race conditions, deadlocks, etc.,
and whether such rules are enforced by runtime warnings, errors, assertions, etc.
Examples: a class might be non-thread-safe (like Java Collections); might
be fully thread-safe (internal locking); might require access through a mutex
(and may or may not automatically acquire that mutex on behalf of a client method);
might be able to run only in the event queue; etc.
Also describe when any events are fired: synchronously, asynchronously, etc.
Ideas: <a href="http://core.netbeans.org/proposals/threading/index.html#recommendations">Threading Recommendations</a> (in progress)
</hint>
</question>
-->
<answer id="exec-threading">
<p>
The API is designed to be thread safe, but the correct threading depends on
the SPI implementator.
</p>
</answer>
<!--
<question id="format-clipboard" when="impl">
Which data flavors (if any) does your code read from or insert to
the clipboard (by access to clipboard on means calling methods on <code>java.awt.datatransfer.Transferable</code>?
<hint>
Often Node's deal with clipboard by usage of <code>Node.clipboardCopy, Node.clipboardCut and Node.pasteTypes</code>.
Check your code for overriding these methods.
</hint>
</question>
-->
<answer id="format-clipboard">
<p>
No.
</p>
</answer>
<!--
<question id="format-dnd" when="impl">
Which protocols (if any) does your code understand during Drag & Drop?
<hint>
Often Node's deal with clipboard by usage of <code>Node.drag, Node.getDropType</code>.
Check your code for overriding these methods. Btw. if they are not overridden, they
by default delegate to <code>Node.clipboardCopy, Node.clipboardCut and Node.pasteTypes</code>.
</hint>
</question>
-->
<answer id="format-dnd">
<p>
No.
</p>
</answer>
<!--
<question id="format-types" when="impl">
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?
<hint>
<p>
Files can be read and written by other programs, modules and users. If they influence
your behaviour, make sure you either document the format or claim that it is a private
api (using the <api> tag).
</p>
<p>
If you generate an ant build file, this is very likely going to be seen by end users and
they will be attempted to edit it. You should be ready for that and provide here a link
to documentation that you have for such purposes and also describe how you are going to
understand such files during next release, when you (very likely) slightly change the
format.
</p>
</hint>
</question>
-->
<answer id="format-types">
<p>
None.
</p>
</answer>
<!--
<question id="lookup-lookup" when="init">
Does your module use <code>org.openide.util.Lookup</code>
or any similar technology to find any components to communicate with? Which ones?
<hint>
NetBeans is build around a generic registry of services called
lookup. It is preferable to use it for registration and discovery
if possible. See
<a href="http://www.netbeans.org/download/dev/javadoc/org-openide-util/org/openide/util/lookup/doc-files/index.html">
The Solution to Comunication Between Components
</a>. If you do not plan to use lookup and insist usage
of other solution, then please describe why it is not working for
you.
<br/>
When filling the final version of your arch document, please
describe the interfaces you are searching for, where
are defined, whether you are searching for just one or more of them,
if the order is important, etc. Also classify the stability of such
API contract. Use <api group=&lookup& /> tag, so
your information gets listed in the summary page of your javadoc.
</hint>
</question>
-->
<answer id="lookup-lookup">
<p>
Yes, it looks up the SPI interface org.netbeans.modules.java.source.queries.spi.QueriesController
in the global Lookup.
</p>
</answer>
<!--
<question id="lookup-register" when="final">
Do you register anything into lookup for other code to find?
<hint>
Do you register using layer file or using <code>META-INF/services</code>?
Who is supposed to find your component?
</hint>
</question>
-->
<answer id="lookup-register">
<p>
None.
</p>
</answer>
<!--
<question id="lookup-remove" when="final">
Do you remove entries of other modules from lookup?
<hint>
Why? Of course, that is possible, but it can be dangerous. Is the module
your are masking resource from aware of what you are doing?
</hint>
</question>
-->
<answer id="lookup-remove">
<p>
None.
</p>
</answer>
<!--
<question id="perf-exit" when="final">
Does your module run any code on exit?
</question>
-->
<answer id="perf-exit">
<p>
No.
</p>
</answer>
<!--
<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>
No.
</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>
No.
</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>
Not applicable, the API is just facade over the java model.
The memory consumption depends on the model.
</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>
No.
</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>
No.
</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>
Not applicable, the API is just facade over the java model.
</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>
Covered by unit tests.
</p>
</answer>
<!--
<question id="perf-startup" when="final">
Does your module run any code on startup?
</question>
-->
<answer id="perf-startup">
<p>
No.
</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>
No.
</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>
No.
</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