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<p class="overviewlink">
<a href="overview-summary.html">Overview</a>
</p>
<h1>NetBeans Architecture Answers for Nodes API module</h1>
<ul>
<li>
<b>Author:</b> phrebejk@netbeans.org</li>
<li>
<b>Answers as of:</b> 14-Sep-2018</li>
<li>
<b>Answers for questions version:</b> 1.12</li>
<li>
<b>Latest available version of questions:</b> 1.29</li>
</ul>
<strong>
WARNING: answering questions version 1.12
rather than the current 1.29.
</strong>
<hr>
<h2>Interfaces table</h2>
<a name="group-java">
<h5>Group of java interfaces</h5>
</a>
<table cellpadding="1" cellspacing="0" border="0" class="tablebg" width="100%">
<tr>
<td>
<table border="0" cellpadding="3" cellspacing="1" width="100%">
<tr class="tablersh">
<td align="CENTER" width="25%"><span class="titlectable">Interface Name</span></td><td align="CENTER" width="10%"><span class="titlectable">In/Out</span></td><td align="CENTER" width="10%"><span class="titlectable">Stability</span></td><td align="CENTER"><span class="titlectable">Specified in What Document?</span></td>
</tr>
<tr class="tabler">
<td>UtilitiesAPI</td><td>Imported</td><td><a href="http://wiki.netbeans.org/API_Stability#Official">Official</a></td><td><a name="java-UtilitiesAPI"><a href="../org-openide-util/org/openide/util/doc-files/api.html">
.../org/openide/util/doc-files/api.html</a>
<p></p>
<p></p>
The module is needed for compilation.
The module is used during runtime.
Specification version
9.3
is required.
<p></p>
</a></td>
</tr>
<tr class="tabler">
<td>org.openide.awt</td><td>Imported</td><td><a href="http://wiki.netbeans.org/API_Stability#Official">Official</a></td><td><a name="java-org.openide.awt">
<p></p>
The module is needed for compilation.
The module is used during runtime.
Specification version
7.33
is required.
<p></p>
</a></td>
</tr>
<tr class="tabler">
<td>DialogsAPI</td><td>Imported</td><td><a href="http://wiki.netbeans.org/API_Stability#Official">Official</a></td><td><a name="java-DialogsAPI">
<p></p>
The module is needed for compilation.
The module is used during runtime.
Specification version
6.2
is required.
<p></p>
</a></td>
</tr>
<tr class="tabler">
<td>FilesystemsAPI</td><td>Imported</td><td><a href="http://wiki.netbeans.org/API_Stability#Official">Official</a></td><td><a name="java-FilesystemsAPI">
<p></p>
The module is needed for compilation.
The module is used during runtime.
Specification version
9.0
is required.
<p></p>
</a></td>
</tr>
<tr class="tabler">
<td>WeakListener.setAccessible</td><td>Imported</td><td><a href="http://wiki.netbeans.org/API_Stability#Devel">Under Development</a></td><td><a name="java-WeakListener.setAccessible">
<p></p>
The module is needed for compilation.
The module is used during runtime.
Specification version
9.3
is required.
<p></p>
</a></td>
</tr>
<tr class="tabler">
<td>LookupAPI</td><td>Imported</td><td><a href="http://wiki.netbeans.org/API_Stability#Official">Official</a></td><td><a name="java-LookupAPI">
<p></p>
The module is needed for compilation.
The module is used during runtime.
Specification version
8.0
is required.
<p></p>
</a></td>
</tr>
<tr class="tabler">
<td>NodesAPI</td><td>Exported</td><td><a href="http://wiki.netbeans.org/API_Stability#Official">Official</a></td><td><a name="java-NodesAPI"><a href="org/openide/nodes/doc-files/api.html">
.../org/openide/nodes/doc-files/api.html</a>
<p></p>
</a></td>
</tr>
<tr class="tabler">
<td>ProjectManagerMutex</td><td>Imported</td><td><a href="http://wiki.netbeans.org/API_Stability#Private">Private</a></td><td><a name="java-ProjectManagerMutex">
<p></p>
<p>A test in <a href="org/openide/nodes/Children.html" shape="rect">Children</a> checks that
<code>org.netbeans.api.project.ProjectManager.mutex()</code> is not held by the current
thread when acquiring <a href="org/openide/nodes/Children.html#MUTEX" shape="rect">Children.MUTEX</a>.
Since this module cannot depend on the module providing <code>ProjectManager</code>,
the test uses reflection to retrieve the <code>ProjectManager.mutex()</code> instance.</p>
<p></p>
</a></td>
</tr>
</table>
</td>
</tr>
</table>
<p></p>
<a name="group-property">
<h5>Group of property interfaces</h5>
</a>
<table cellpadding="1" cellspacing="0" border="0" class="tablebg" width="100%">
<tr>
<td>
<table border="0" cellpadding="3" cellspacing="1" width="100%">
<tr class="tablersh">
<td align="CENTER" width="25%"><span class="titlectable">Interface Name</span></td><td align="CENTER" width="10%"><span class="titlectable">In/Out</span></td><td align="CENTER" width="10%"><span class="titlectable">Stability</span></td><td align="CENTER"><span class="titlectable">Specified in What Document?</span></td>
</tr>
<tr class="tabler">
<td>helpID</td><td>Imported</td><td><a href="http://wiki.netbeans.org/API_Stability#Official">Official</a></td><td><a name="property-helpID">
<p></p>For providing help sets for JavaBeans<p></p>
</a></td>
</tr>
<tr class="tabler">
<td>propertiesHelpID</td><td>Exported</td><td><a href="http://wiki.netbeans.org/API_Stability#Stable">Stable</a></td><td><a name="property-propertiesHelpID">
<p></p>For providing help sets for JavaBeans proerties<p></p>
</a></td>
</tr>
<tr class="tabler">
<td>expertHelpID</td><td>Exported</td><td><a href="http://wiki.netbeans.org/API_Stability#Stable">Stable</a></td><td><a name="property-expertHelpID">
<p></p>For providing help sets for JavaBeans properties<p></p>
</a></td>
</tr>
</table>
</td>
</tr>
</table>
<p></p>
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<api-answers author="phrebejk@netbeans.org" module="Nodes API" question-version="1.12">
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<hr>
<h2>General Information</h2>
<ul>
<p></p>
<font color="gray"><b><a name="answer-arch-what">Question (arch-what)</a>:</b><em>
What is this project good for?
</em></font>
<p></p>
<b>Answer:</b>
Nodes API serves as the main aparatus for visualisation of objects
in NetBeans. Nodes augment objects with standard aspects used for
visualisation (e.g. name, displayName, icons, set of proerties,
subnodes hierarchy, etc.) Once a Node is defined for given object
it can be visualised using diferent views e.g. trees, lists, tables etc.
Descripion of nodes can be found
<a href="org/openide/nodes/doc-files/api.html" shape="rect">here</a>.
<p></p>
<font color="gray"><b><a name="answer-arch-overall">Question (arch-overall)</a>:</b><em>
Describe the overall architecture.
</em></font>
<p></p>
<b>WARNING:</b> Question with id="<i>arch-overall</i>" has not been answered!<p></p>
<font color="gray"><b><a name="answer-arch-usecases">Question (arch-usecases)</a>:</b><em>
Describe the main <a href="http://wiki.netbeans.org/API_Design#The_Importance_of_Being_Use_Case_Oriented" shape="rect">
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?
</em></font>
<p></p>
<b>Answer:</b>
<p>
<a href="https://leanpub.com/nbp4beginners" onclick="target='_blank'" shape="rect">
<img alt="Cover of NetBeans Platform for Beginners book" height="70" src="http://wiki.apidesign.org/images/0/03/NetBeansPlatformForBeginners.jpg" style="float: right" width="60">
</a>
For general overview of the concepts related to nodes and <a href="../org-openide-explorer/overview-summary.html" shape="rect">explorers</a>,
together with code samples, see chapter 7,
of <a href="https://leanpub.com/nbp4beginners" onclick="target='_blank'" shape="rect">NetBeans Platform for Beginners</a>
by Jason Wexbridge and Walter Nyland.
</p>
<p></p>
<font color="gray"><b><a name="answer-arch-time">Question (arch-time)</a>:</b><em>
What are the time estimates of the work?
</em></font>
<p></p>
<b>WARNING:</b> Question with id="<i>arch-time</i>" has not been answered!<p></p>
<font color="gray"><b><a name="answer-arch-quality">Question (arch-quality)</a>:</b><em>
How will the <a href="http://www.netbeans.org/community/guidelines/q-evangelism.html" shape="rect">quality</a>
of your code be tested and
how are future regressions going to be prevented?
</em></font>
<p></p>
<b>WARNING:</b> Question with id="<i>arch-quality</i>" has not been answered!<p></p>
<font color="gray"><b><a name="answer-arch-where">Question (arch-where)</a>:</b><em>
Where one can find sources for your module?
</em></font>
<p></p>
<b>WARNING:</b> Question with id="<i>arch-where</i>" has not been answered!</ul>
<hr>
<h2>Project and platform dependencies</h2>
<ul>
<p></p>
<font color="gray"><b><a name="answer-dep-nb">Question (dep-nb)</a>:</b><em>
What other NetBeans projects and modules does this one depend on?
</em></font>
<p></p>
<b>Answer:</b>
<a href="#java-UtilitiesAPI">UtilitiesAPI</a>
<p>The default answer to this question is:<!--If you do not want default answer to be generated you can use <defaultanswer generate='none' /> here--><br>
<p>
<p>
These modules are required in project.xml:
<!--<li><api type='import' group='java' category='official' name='org.openide.awt'>
The module is needed for compilation.
The module is used during runtime.
Specification version
7.33
is required.
</api>
</li>
--><!--<li><api type='import' group='java' category='official' name='DialogsAPI'>
The module is needed for compilation.
The module is used during runtime.
Specification version
6.2
is required.
</api>
</li>
--><!--<li><api type='import' group='java' category='official' name='FilesystemsAPI'>
The module is needed for compilation.
The module is used during runtime.
Specification version
9.0
is required.
</api>
</li>
--><!--<li><api type='import' group='java' category='official' name='UtilitiesAPI'>
The module is needed for compilation.
The module is used during runtime.
Specification version
9.3
is required.
</api>
</li>
--><!--<li><api type='import' group='java' category='devel' name='WeakListener.setAccessible'>
The module is needed for compilation.
The module is used during runtime.
Specification version
9.3
is required.
</api>
</li>
--><!--<li><api type='import' group='java' category='official' name='LookupAPI'>
The module is needed for compilation.
The module is used during runtime.
Specification version
8.0
is required.
</api>
</li>
--><ul>
<li>
<a href="#java-org.openide.awt">org.openide.awt</a>
-
The module is needed for compilation.
The module is used during runtime.
Specification version
7.33
is required.
</li>
<li>
<a href="#java-DialogsAPI">DialogsAPI</a>
-
The module is needed for compilation.
The module is used during runtime.
Specification version
6.2
is required.
</li>
<li>
<a href="#java-FilesystemsAPI">FilesystemsAPI</a>
-
The module is needed for compilation.
The module is used during runtime.
Specification version
9.0
is required.
</li>
<li>
<a href="#java-UtilitiesAPI">UtilitiesAPI</a>
-
The module is needed for compilation.
The module is used during runtime.
Specification version
9.3
is required.
</li>
<li>
<a href="#java-WeakListener.setAccessible">WeakListener.setAccessible</a>
-
The module is needed for compilation.
The module is used during runtime.
Specification version
9.3
is required.
</li>
<li>
<a href="#java-LookupAPI">LookupAPI</a>
-
The module is needed for compilation.
The module is used during runtime.
Specification version
8.0
is required.
</li>
</ul>
</p>
</p>
</p>
<p></p>
<font color="gray"><b><a name="answer-dep-non-nb">Question (dep-non-nb)</a>:</b><em>
What other projects outside NetBeans does this one depend on?
</em></font>
<p></p>
<b>Answer:</b>
None
<p></p>
<font color="gray"><b><a name="answer-dep-platform">Question (dep-platform)</a>:</b><em>
On which platforms does your module run? Does it run in the same
way on each?
</em></font>
<p></p>
<b>Answer:</b>
Any
<p></p>
<font color="gray"><b><a name="answer-dep-jre">Question (dep-jre)</a>:</b><em>
Which version of JRE do you need (1.2, 1.3, 1.4, etc.)?
</em></font>
<p></p>
<b>Answer:</b>
1.3
<p></p>
<font color="gray"><b><a name="answer-dep-jrejdk">Question (dep-jrejdk)</a>:</b><em>
Do you require the JDK or is the JRE enough?
</em></font>
<p></p>
<b>Answer:</b>
JRE
</ul>
<hr>
<h2>Deployment</h2>
<ul>
<p></p>
<font color="gray"><b><a name="answer-deploy-jar">Question (deploy-jar)</a>:</b><em>
Do you deploy just module JAR file(s) or other files as well?
</em></font>
<p></p>
<b>Answer:</b>
The API portion is inside <samp>openide.jar</samp>
<p></p>
<font color="gray"><b><a name="answer-deploy-nbm">Question (deploy-nbm)</a>:</b><em>
Can you deploy an NBM via the Update Center?
</em></font>
<p></p>
<b>Answer:</b>
Yes (as part of <samp>openide.nbm</samp> and <samp>core.nbm</samp>).
<p></p>
<font color="gray"><b><a name="answer-deploy-shared">Question (deploy-shared)</a>:</b><em>
Do you need to be installed in the shared location only, or in the user directory only,
or can your module be installed anywhere?
</em></font>
<p></p>
<b>Answer:</b>
Must be installed in the shared location as it is part of the very core of NetBeans.
<p></p>
<font color="gray"><b><a name="answer-deploy-packages">Question (deploy-packages)</a>:</b><em>
Are packages of your module made inaccessible by not declaring them
public?
</em></font>
<p></p>
<b>Answer:</b>
<a href="#java-NodesAPI">NodesAPI</a>
is a public package.
<p></p>
<font color="gray"><b><a name="answer-deploy-dependencies">Question (deploy-dependencies)</a>:</b><em>
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)?
</em></font>
<p></p>
<b>WARNING:</b> Question with id="<i>deploy-dependencies</i>" has not been answered!</ul>
<hr>
<h2>Compatibility with environment</h2>
<ul>
<p></p>
<font color="gray"><b><a name="answer-compat-i18n">Question (compat-i18n)</a>:</b><em>
Is your module correctly internationalized?
</em></font>
<p></p>
<b>Answer:</b>
Yes
<p></p>
<font color="gray"><b><a name="answer-compat-standards">Question (compat-standards)</a>:</b><em>
Does the module implement or define any standards? Is the
implementation exact or does it deviate somehow?
</em></font>
<p></p>
<b>Answer:</b>
Defines and implements NetBeans NodesAPI.
<p></p>
<font color="gray"><b><a name="answer-compat-version">Question (compat-version)</a>:</b><em>
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?
</em></font>
<p></p>
<b>Answer:</b>
Nodes API itself does not use any kind of settings. Displayed nodes are
persisted using serialization by default, but this can be changed
by developers by providing own persistence mechanism.
<p></p>
<font color="gray"><b><a name="answer-compat-deprecation">Question (compat-deprecation)</a>:</b><em>
How the introduction of your project influences functionality
provided by previous version of the product?
</em></font>
<p></p>
<b>WARNING:</b> Question with id="<i>compat-deprecation</i>" has not been answered!</ul>
<hr>
<h2>Access to resources</h2>
<ul>
<p></p>
<font color="gray"><b><a name="answer-resources-file">Question (resources-file)</a>:</b><em>
Does your module use <code>java.io.File</code> directly?
</em></font>
<p></p>
<b>Answer:</b>
No
<p></p>
<font color="gray"><b><a name="answer-resources-layer">Question (resources-layer)</a>:</b><em>
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?
</em></font>
<p></p>
<b>Answer:</b>
No
<p></p>
<font color="gray"><b><a name="answer-resources-read">Question (resources-read)</a>:</b><em>
Does your module read any resources from layers? For what purpose?
</em></font>
<p></p>
<b>Answer:</b>
No
<p></p>
<font color="gray"><b><a name="answer-resources-mask">Question (resources-mask)</a>:</b><em>
Does your module mask/hide/override any resources provided by other modules in
their layers?
</em></font>
<p></p>
<b>Answer:</b>
No
<p></p>
<font color="gray"><b><a name="answer-resources-preferences">Question (resources-preferences)</a>:</b><em>
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 ?
</em></font>
<p></p>
<b>WARNING:</b> Question with id="<i>resources-preferences</i>" has not been answered!</ul>
<hr>
<h2>Lookup of components</h2>
<ul>
<p></p>
<font color="gray"><b><a name="answer-lookup-lookup">Question (lookup-lookup)</a>:</b><em>
Does your module use <code>org.openide.util.Lookup</code>
or any similar technology to find any components to communicate with? Which ones?
</em></font>
<p></p>
<b>Answer:</b>
Nodes use lookup to communicate with other components. Each node
contains own lookup wich is used for augmenting nodes with extended
functionality and data. Nodes do not depend on content of other Lookups.
<p></p>
<font color="gray"><b><a name="answer-lookup-register">Question (lookup-register)</a>:</b><em>
Do you register anything into lookup for other code to find?
</em></font>
<p></p>
<b>Answer:</b>
No
<p></p>
<font color="gray"><b><a name="answer-lookup-remove">Question (lookup-remove)</a>:</b><em>
Do you remove entries of other modules from lookup?
</em></font>
<p></p>
<b>Answer:</b>
No
</ul>
<!-- classification of interfaces -->
<!-- package names -->
<hr>
<h2>Execution Environment</h2>
<ul>
<p></p>
<font color="gray"><b><a name="answer-exec-property">Question (exec-property)</a>:</b><em>
Is execution of your code influenced by any environment or
Java system (<code>System.getProperty</code>) property?
On a similar note, is there something interesting that you
pass to <code>java.util.logging.Logger</code>? Or do you observe
what others log?
</em></font>
<p></p>
<b>Answer:</b>
No
<p></p>
<font color="gray"><b><a name="answer-exec-component">Question (exec-component)</a>:</b><em>
Is execution of your code influenced by any (string) property
of any of your components?
</em></font>
<p></p>
<b>Answer:</b>
<a href="org/openide/nodes/BeanNode.html" shape="rect">BeanNode</a>
which serves for default visualisation of JavaBeans uses the
"helpID", "propertiesHelpID" and "expertHelpID" form BeanDescriptor of given bean.
to link with help files.
<a href="#property-helpID">helpID</a>
- For providing help sets for JavaBeans
<a href="#property-propertiesHelpID">propertiesHelpID</a>
- For providing help sets for JavaBeans proerties
<a href="#property-expertHelpID">expertHelpID</a>
- For providing help sets for JavaBeans properties
<p></p>
<font color="gray"><b><a name="answer-exec-ant-tasks">Question (exec-ant-tasks)</a>:</b><em>
Do you define or register any ant tasks that other can use?
</em></font>
<p></p>
<b>WARNING:</b> Question with id="<i>exec-ant-tasks</i>" has not been answered!<p></p>
<font color="gray"><b><a name="answer-exec-classloader">Question (exec-classloader)</a>:</b><em>
Does your code create its own class loader(s)?
</em></font>
<p></p>
<b>Answer:</b>
No
<p></p>
<font color="gray"><b><a name="answer-exec-reflection">Question (exec-reflection)</a>:</b><em>
Does your code use Java Reflection to execute other code?
</em></font>
<p></p>
<b>Answer:</b>
<p>
<a href="org/openide/nodes/BeanNode.html" shape="rect">BeanNode</a>
obviously depends on reflection to get values of beans
properties, which shouldn't be considered lack of API. Same
applyies to
<a href="org/openide/nodes/PropertySupport.html" shape="rect">PropertySupport</a> and
<a href="org/openide/nodes/IndexedPropertySupport.html" shape="rect">IndexedPropertySupport.</a>
</p>
<a href="#java-ProjectManagerMutex">ProjectManagerMutex</a>
-
<p>A test in <a href="org/openide/nodes/Children.html" shape="rect">Children</a> checks that
<code>org.netbeans.api.project.ProjectManager.mutex()</code> is not held by the current
thread when acquiring <a href="org/openide/nodes/Children.html#MUTEX" shape="rect">Children.MUTEX</a>.
Since this module cannot depend on the module providing <code>ProjectManager</code>,
the test uses reflection to retrieve the <code>ProjectManager.mutex()</code> instance.</p>
<p></p>
<font color="gray"><b><a name="answer-exec-privateaccess">Question (exec-privateaccess)</a>:</b><em>
Are you aware of any other parts of the system calling some of
your methods by reflection?
</em></font>
<p></p>
<b>Answer:</b>
No
<p></p>
<font color="gray"><b><a name="answer-exec-process">Question (exec-process)</a>:</b><em>
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?
</em></font>
<p></p>
<b>Answer:</b>
No
<p></p>
<font color="gray"><b><a name="answer-exec-introspection">Question (exec-introspection)</a>:</b><em>
Does your module use any kind of runtime type information (<code>instanceof</code>,
work with <code>java.lang.Class</code>, etc.)?
</em></font>
<p></p>
<b>Answer:</b>
Yes.
<ul>
<li>instanceof: 37 occurences</li>
<li>isAssgnableFrom: 5 occurences</li>
<li>isInstance: 3 occurences</li>
</ul>
<p></p>
<font color="gray"><b><a name="answer-exec-threading">Question (exec-threading)</a>:</b><em>
What threading models, if any, does your module adhere to? How the
project behaves with respect to threading?
</em></font>
<p></p>
<b>WARNING:</b> Question with id="<i>exec-threading</i>" has not been answered!<p></p>
<font color="gray"><b><a name="answer-security-policy">Question (security-policy)</a>:</b><em>
Does your functionality require modifications to the standard policy file?
</em></font>
<p></p>
<b>WARNING:</b> Question with id="<i>security-policy</i>" has not been answered!<p></p>
<font color="gray"><b><a name="answer-security-grant">Question (security-grant)</a>:</b><em>
Does your code grant additional rights to some other code?
</em></font>
<p></p>
<b>WARNING:</b> Question with id="<i>security-grant</i>" has not been answered!</ul>
<hr>
<h2>Format of files and protocols</h2>
<ul>
<p></p>
<font color="gray"><b><a name="answer-format-types">Question (format-types)</a>:</b><em>
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?
</em></font>
<p></p>
<b>Answer:</b>
None
<p></p>
<font color="gray"><b><a name="answer-format-dnd">Question (format-dnd)</a>:</b><em>
Which protocols (if any) does your code understand during Drag &amp; Drop?
</em></font>
<p></p>
<b>Answer:</b>
Nodes provide default implementation of d'n'd operations on nodes. This
can be extendeded by specific implementation of nodes by overloading:
<a href="org/openide/nodes/Node.html#drag--" shape="rect">Node.drag()</a>
<a href="org/openide/nodes/Node.html#getDropType-java.awt.datatransfer.Transferable-int-int-" shape="rect">Node.getDropTye()</a>
Default Transferables for nodes can be obtained using.
<a href="org/openide/nodes/NodeTransfer.html" shape="rect">NodeTransfer</a> class
The
<a href="org/openide/nodes/NodeTransfer.Paste.html" shape="rect">NodeTransfer.Paste</a>
interface serves as an intelligent source of paste types for a target node.
<p></p>
<font color="gray"><b><a name="answer-format-clipboard">Question (format-clipboard)</a>:</b><em>
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>?
</em></font>
<p></p>
<b>Answer:</b>
Nodes provide default implementation of clipboard operations on nodes. This
can be extendeded by specific implementation of nodes by overloading:
<a href="org/openide/nodes/Node.html#clipboardCopy--" shape="rect">Node.clipboardCopy()</a>,
<a href="org/openide/nodes/Node.html#clipboardCut--" shape="rect">Node.cliboardCut()</a>,
<a href="org/openide/nodes/Node.html#getPasteTypes-java.awt.datatransfer.Transferable-" shape="rect">Node.getPasteTypes()</a>
Default Transferables for nodes can be obtained using.
<a href="org/openide/nodes/NodeTransfer.html" shape="rect">NodeTransfer</a> class
<p>
<a href="org/openide/nodes/IndexedCustomizer.html" shape="rect">IndexedCustomizer</a>
provides own DataFlavor transfering indices.
</p>
</ul>
<hr>
<h2>Performance and Scalability</h2>
<ul>
<p></p>
<font color="gray"><b><a name="answer-perf-startup">Question (perf-startup)</a>:</b><em>
Does your module run any code on startup?
</em></font>
<p></p>
<b>Answer:</b>
No
<p></p>
<font color="gray"><b><a name="answer-perf-exit">Question (perf-exit)</a>:</b><em>
Does your module run any code on exit?
</em></font>
<p></p>
<b>Answer:</b>
Not directly. State of nodes can be serialized as result of
window system serialization.
<p></p>
<font color="gray"><b><a name="answer-perf-scale">Question (perf-scale)</a>:</b><em>
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?
</em></font>
<p></p>
<b>Answer:</b>
Number of visiualized objects and complexity of the visualised
objects.
<p></p>
<font color="gray"><b><a name="answer-perf-limit">Question (perf-limit)</a>:</b><em>
Are there any hard-coded or practical limits in the number or size of
elements your code can handle?
</em></font>
<p></p>
<b>Answer:</b>
All nodes are held in memory during the IDE runtime, there is no
swap/cache mechanism for nodes.
<p></p>
<font color="gray"><b><a name="answer-perf-mem">Question (perf-mem)</a>:</b><em>
How much memory does your component consume? Estimate
with a relation to the number of windows, etc.
</em></font>
<p></p>
<b>Answer:</b>
Fully initialized node can contain relatively big amount of
other objects e.g. objects in lookups, properties, etc. Depending on
th Node's subclass.
<p></p>
<font color="gray"><b><a name="answer-perf-wakeup">Question (perf-wakeup)</a>:</b><em>
Does any piece of your code wake up periodically and do something
even when the system is otherwise idle (no user interaction)?
</em></font>
<p></p>
<b>Answer:</b>
No
<p></p>
<font color="gray"><b><a name="answer-perf-progress">Question (perf-progress)</a>:</b><em>
Does your module execute any long-running tasks?
</em></font>
<p></p>
<b>Answer:</b>
No
<p></p>
<font color="gray"><b><a name="answer-perf-huge_dialogs">Question (perf-huge_dialogs)</a>:</b><em>
Does your module contain any dialogs or wizards with a large number of
GUI controls such as combo boxes, lists, trees, or text areas?
</em></font>
<p></p>
<b>Answer:</b>
No
<p></p>
<font color="gray"><b><a name="answer-perf-menus">Question (perf-menus)</a>:</b><em>
Does your module use dynamically updated context menus, or
context-sensitive actions with complicated and slow enablement logic?
</em></font>
<p></p>
<b>Answer:</b>
No
<p></p>
<font color="gray"><b><a name="answer-perf-spi">Question (perf-spi)</a>:</b><em>
How the performance of the plugged in code will be enforced?
</em></font>
<p></p>
<b>WARNING:</b> Question with id="<i>perf-spi</i>" has not been answered!</ul>
<!-- security -->
<!-- recovery -->
</api-questions>
<!--
<question id="arch-what">
What is this project good for?
<hint>
Please provide here few lines describing the the project,
what problem it should solve, provide links to documentation,
specifications, etc.
</hint>
</question>
-->
<!--
<question id="compat-i18n">
Is your module correctly internationalized?
<hint>
Correct internationalization means that it obeys instuctions
at <a href="http://www.netbeans.org/devhome/docs/i18n/index.html">
NetBeans I18N pages</a>.
</hint>
</question>
-->
<!--
<question id="compat-standards">
Does the module implement or define any standards? Is the
implementation exact or does it deviate somehow?
</question>
-->
<!--
<question id="compat-version">
Can your module coexist with earlier and future
versions? 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>
-->
<!--
<question id="dep-jre">
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>
-->
<!--
<question id="dep-jrejdk">
Do you require the JDK or is the JRE enough?
</question>
-->
<!--
<question id="dep-nb">
What other NetBeans projects does this one depend on?
<hint>
If you want, describe such projects as imported API using
the <code>&lt;api name="identification" type="import or export" category="stable" url="where is the description" /&gt;</code>
</hint>
</question>
-->
<!--
<question id="dep-non-nb">
What other projects outside NetBeans does this one depend on?
<hint>
Some non-NetBeans projects are packaged as NetBeans modules
(see <a href="http://libs.netbeans.org">libraries</a>) and
it is prefered to use this approach when more modules may
depend on such third-party library.
</hint>
</question>
-->
<!--
<question id="dep-platform">
On which platforms does your module run? Does it run in the same
way on each?
<hint>
If your module is using JNI or deals with special differences of
OSes like filesystems, etc. please describe here what they are.
</hint>
</question>
-->
<!--
<question id="deploy-jar">
Do you deploy just module JAR file(s) or other files as well?
<hint>
If your module consist just from one module JAR file, just confirm that.
If it uses more than one JAR, describe where there 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/deinstallation leaves the system
in state as it was before installation.
</hint>
</question>
-->
<!--
<question id="deploy-nbm">
Can you deploy an NBM via the Update Center?
<hint>
If not why?
</hint>
</question>
-->
<!--
<question id="deploy-packages">
Are packages of your module made inaccessible by not declaring them
public?
<hint>
NetBeans module system allows restriction of access rights to
public classes of your module from other modules. This prevents
unwanted dependencies of others on your code and should be used
whenever possible (<a href="http://www.netbeans.org/download/apis/org/openide/doc-files/upgrade.html#3.4-public-packages">
public packages
</a>).
</hint>
</question>
-->
<!--
<question id="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?
<hint>
Installation location shall not matter, if it does explain why.
Consider also whether <code>InstalledFileLocator</code> can help.
</hint>
</question>
-->
<!--
<question id="exec-classloader">
Does your code create its own class loader(s)?
<hint>
A bit unusual. Please explain why and what for.
</hint>
</question>
-->
<!--
<question id="exec-component">
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 behaviour 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>
-->
<!--
<question id="exec-privateaccess">
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>
-->
<!--
<question id="exec-property">
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 behaviour of your
code, somebody will likely use it. You should describe what it does
and the stability category of this API. You may use
<pre>
&lt;property name="id" category="private" &gt;
description of the property, where it is used, what it influence, etc.
&lt;/property&gt;
</pre>
</hint>
</question>
-->
<!--
<question id="exec-reflection">
Does your code use Java Reflection to execute other code?
<hint>
This usually indicates a missing or unsufficient 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>
-->
<!--
<question id="format-clipboard">
Which data flavors (if any) does your code read from or insert to
the clipboard?
</question>
-->
<!--
<question id="format-dnd">
Which protocols (if any) does your code understand during Drag &amp; Drop?
</question>
-->
<!--
<question id="format-types">
Which file formats (if any) does your code read or write on disk?
</question>
-->
<!--
<question id="lookup-lookup">
Does your module use <code>org.openide.util.Lookup</code>
to find any components to communicate with? Which ones?
<hint>
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 clasify the stability of such
API contract.
</hint>
</question>
-->
<!--
<question id="lookup-register">
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>
-->
<!--
<question id="lookup-remove">
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>
-->
<!--
<question id="perf-exit">
Does your module run any code on exit?
</question>
-->
<!--
<question id="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?
</question>
-->
<!--
<question id="perf-limit">
Are there any hardcoded or practical limits in the number or size of
elements your code can handle?
</question>
-->
<!--
<question id="perf-mem">
How much memory does your component consume? Estimate
with a relation to the number of windows, etc.
</question>
-->
<!--
<question id="perf-menus">
Does your module use dynamically updated context menus, or
context-sensitive actions with complicated enablement logic?
</question>
-->
<!--
<question id="perf-progress">
Does your module execute any long-running tasks?
<hint>Typically they are tasks like connecting over
network, computing huge amount of data, compilation.
Such communication should be done asynchronously (for example
using <code>RequestProcessor</code>), definitively it should
not block AWT thread.
</hint>
</question>
-->
<!--
<question id="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?
Please include some estimates.
</question>
-->
<!--
<question id="perf-startup">
Does your module run any code on startup?
</question>
-->
<!--
<question id="perf-wakeup">
Does any piece of your code wake up periodically and do something
even when the system is otherwise idle (no user interaction)?
</question>
-->
<!--
<question id="resources-file">
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 prefered
way that should be used. But of course there can be situations when
this is not suitable.
</hint>
</question>
-->
<!--
<question id="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?
<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>
-->
<!--
<question id="resources-mask">
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>
-->
<!--
<question id="resources-read">
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 clasify according to
<a href="http://openide.netbeans.org/tutorial/api-design.html#categories">
common stability categories</a>.
</hint>
</question>
-->
<!--
<question id="exec-introspection">
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>
-->
<!--
<question id="exec-process">
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>
-->
</api-answers>
<hr>
<p><span class="footnote">Built on September 14 2018.&nbsp;&nbsp;|&nbsp;&nbsp; Copyright &#169; 2017-2018 Apache Software Foundation. All Rights Reserved.</span></p>
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