|  | <?xml version="1.0" encoding="UTF-8"?> | 
|  | <!-- | 
|  |  | 
|  | Licensed to the Apache Software Foundation (ASF) under one | 
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|  | "License"); you may not use this file except in compliance | 
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|  |  | 
|  | Unless required by applicable law or agreed to in writing, | 
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|  | "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | 
|  | KIND, either express or implied.  See the License for the | 
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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="1.26" | 
|  | author="cwebster@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. | 
|  | If possible please provide | 
|  | simple diagrams. | 
|  | </hint> | 
|  | </question> | 
|  | --> | 
|  | <answer id="arch-overall"> | 
|  | <p> | 
|  | <api type="export" name="XDM" group="java" category="devel">XDM (XML Document Model)</api> provides a XAM based full fidelity XML model which | 
|  | implements the org.w3c.dom interfaces. The intention is not to provide an | 
|  | an alternate implementation of the dom interfaces but only to reuse part of | 
|  | the api where it makes sense and more importantly provide a foundation on | 
|  | which to provide a model basis for graphical multi way editors. | 
|  | </p> | 
|  | This module was developed to support the following requirements: | 
|  | <ul> | 
|  | <li>Full document fidelity. This allows the original document to be | 
|  | preserved and only changes the actual sections of the document which | 
|  | were mutated (i.e. the transformation is lossless).</li> | 
|  | <li>Support for undo/redo in a memory efficient way</li> | 
|  | <li>Support for diff to allow changes to be detected in | 
|  | the underlying source</li> | 
|  | <li>Visitor support</li> | 
|  | </ul> | 
|  | </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? | 
|  | </hint> | 
|  | </question> | 
|  | --> | 
|  | <answer id="arch-quality"> | 
|  | <p> | 
|  | This module is covered by JUnit tests and findBugs has been incorporated into | 
|  | the development process. This module is the core of most of the domain | 
|  | models and is extensively covered. | 
|  | </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> | 
|  | This module is implementation complete, but will require additional effort | 
|  | for ongoing maintenence in conjunction with the other modules. | 
|  | </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 typical client of XDM would be a tool author supporting an XML language | 
|  | who wants to provide a custom client API. A concrete example of this is the XML | 
|  | Schema model. The XML Schema model starts by subclassing AbstractXDMModel and | 
|  | providing the component updater, which is called in conjunction with sync | 
|  | to mutate the model according to changes in the underlying source. | 
|  |  | 
|  | <usecase id="uc1" name="WSDL model"> | 
|  | The WSDL model is based on the XDM model and relies on the XDM capabilities | 
|  | to provide the infrastructure necessary for providing a XAM based model. | 
|  | </usecase> | 
|  | <usecase id="uc2" name="Schema model"> | 
|  | The Schema model is based on the XDM model and relies on the XDM capabilities | 
|  | to provide the infrastructure necessary for providing a XAM based model. | 
|  | </usecase> | 
|  | <usecase id="uc3" name="BPEL model"> | 
|  | The BPEL model is based on the XDM model and relies on the XDM capabilities | 
|  | to provide the infrastructure necessary for providing a XAM based model. | 
|  | </usecase> | 
|  |  | 
|  | The XDM model can be used in standalone mode. | 
|  | <code>  <br/><br/> | 
|  | BaseDocument sd = ...; | 
|  | <br/> | 
|  | Lookup lookup = Lookups.singleton(sd); | 
|  | <br/> | 
|  | // create an editable ModelSource with base document | 
|  | <br/> | 
|  | // in the lookup (this is required) | 
|  | <br/> | 
|  | ModelSource ms = new ModelSource(lookup, true); | 
|  | <br/> | 
|  | // create an XDMModel | 
|  | <br/> | 
|  | XDMModel model = new XDMModel(ms); | 
|  | <br/> | 
|  | // sync the XDM model with the underlying source | 
|  | <br/> | 
|  | model.sync(); | 
|  | <br/> | 
|  | // create customer element, same as dom | 
|  | <br/> | 
|  | Element customer = model.getDocument().createElement("customer"); | 
|  | <br/> | 
|  | // add to the model as 0th child of employee element, not shown | 
|  | <br/> | 
|  | model.add(employee,customer,0); | 
|  | <br/> | 
|  | </code> | 
|  | </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"> | 
|  | The XDM module provides a basis for tool ready XML language models that require full | 
|  | document fidelity, undo/redo, and the ability to sync with the underlying source. | 
|  | <p>List of the main features:</p> | 
|  | <ul> | 
|  | <li>Support for full document fidelity. The users text including spacing and | 
|  | comments are preserved.</li> | 
|  | <li>Undo / Redo is supported using the concept of an immutable tree. XDM nodes | 
|  | do not have parent pointers (only a pointer to the model). Thus a node can | 
|  | be in multiple trees, where each tree is a version. When a mutation to the tree | 
|  | occurs a clone is made of each node in the parent path from the root to the mutated | 
|  | node. All unchanged nodes are simply referenced and thus will live in multiple | 
|  | trees. Thus an undo / redo is simply a reference change. The cost of storing | 
|  | multiple tree is minimized as only the diffs are stored in each version of the | 
|  | tree.</li> | 
|  | <li>The visitor pattern is used in addition to the DOM interfaces which allows | 
|  | easier tree walking</li> | 
|  | <li>An XML diff visitor supports XML difference. Element identity can be | 
|  | supplied by the client.</li> | 
|  | </ul> | 
|  | </answer> | 
|  |  | 
|  |  | 
|  |  | 
|  | <!-- | 
|  | <question id="arch-where" when="init"> | 
|  | 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-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> | 
|  | yes | 
|  | </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> | 
|  | This module implements the DOM interfaces but is not intended to be a | 
|  | replacement for DOM. This module has special semantics surrounding mutation | 
|  | and thus the full DOM interfaces are not supported. | 
|  | </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 or user visible features. | 
|  | </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> | 
|  | 1.5 | 
|  | </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 is sufficient | 
|  | </p> | 
|  | </answer> | 
|  |  | 
|  |  | 
|  |  | 
|  | <!-- | 
|  | <question id="dep-nb" when="init"> | 
|  | What other NetBeans projects and modules does this one depend on? | 
|  | <hint> | 
|  | If you want, describe such projects as imported APIs using | 
|  | the <code><api name="identification" type="import or export" category="stable" url="where is the description" /></code> | 
|  | </hint> | 
|  | </question> | 
|  | --> | 
|  | <answer id="dep-nb"> | 
|  | <defaultanswer generate='here' /> | 
|  | </answer> | 
|  |  | 
|  |  | 
|  |  | 
|  | <!-- | 
|  | <question id="dep-non-nb" when="init"> | 
|  | 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 preferred to use this approach when more modules may | 
|  | depend on such third-party library. | 
|  | </hint> | 
|  | </question> | 
|  | --> | 
|  | <answer id="dep-non-nb"> | 
|  | <p> | 
|  | none | 
|  | </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 your module is using JNI or deals with special differences of | 
|  | OSes like filesystems, etc. please describe here what they are. | 
|  | </hint> | 
|  | </question> | 
|  | --> | 
|  | <answer id="dep-platform"> | 
|  | <p> | 
|  | 100% java, no platform requirement. | 
|  | </p> | 
|  | </answer> | 
|  |  | 
|  |  | 
|  |  | 
|  | <!-- | 
|  | <question id="deploy-dependencies" when="final"> | 
|  | What do other modules need to do to declare a dependency on this one? | 
|  | <hint> | 
|  | Provide a sample of the actual lines you would add to a module manifest | 
|  | to declare a dependency, for example using OpenIDE-Module-Module-Dependencies | 
|  | or OpenIDE-Module-Requires. You may use the magic token @SPECIFICATION-VERSION@ | 
|  | to represent the current specification version of the module. | 
|  | </hint> | 
|  | </question> | 
|  | --> | 
|  | <answer id="deploy-dependencies"> | 
|  | <defaultanswer generate="here"/> | 
|  | </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> | 
|  | only module jar file | 
|  | </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> | 
|  | 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/javadoc/OpenAPIs/org/openide/doc-files/upgrade.html#3.4-public-packages"> | 
|  | public packages | 
|  | </a>). If you do not restrict access to your classes you are | 
|  | making it too easy for other people to misuse your implementation | 
|  | details, that is why you should have good reason for not | 
|  | restricting package access. | 
|  | </hint> | 
|  | </question> | 
|  | --> | 
|  | <answer id="deploy-packages"> | 
|  | <p> | 
|  | yes | 
|  | </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> | 
|  | installed 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> | 
|  | The casting is documented. This needs to be reviewed and cleaned up. We need | 
|  | to look at each instanceof, AssignableFrom, and cast to see if we can eliminate | 
|  | this using a) visitor b) JDK 1.5 return value override | 
|  | </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="impl"> | 
|  | What threading models, if any, does your module adhere to? | 
|  | <hint> | 
|  | 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> | 
|  | This model has been synchronized for thread safety. Thread safety is supported | 
|  | by allowing only a single model mutation (using java synchronized keyword). The | 
|  | immutable nature of the model only requires synchronization when updating the | 
|  | tree thus synchronization of nodes which are not yet in the tree is not thread | 
|  | safe. | 
|  | </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> | 
|  | none | 
|  | </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> | 
|  | none | 
|  | </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> | 
|  | This module is designed to read and write XML files through a swing document. | 
|  | </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> | 
|  | 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. For that use <api group=&lookup& /> tag. | 
|  | </hint> | 
|  | </question> | 
|  | --> | 
|  | <answer id="lookup-lookup"> | 
|  | <p> | 
|  | no | 
|  | </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> | 
|  | no | 
|  | </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> | 
|  | no | 
|  | </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? | 
|  | </question> | 
|  | --> | 
|  | <answer id="perf-limit"> | 
|  | <p> | 
|  | no. This module is able to parse large schemas > 1MB. | 
|  | </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> | 
|  | A basic populated model is about 8000 bytes, this depends on how many components | 
|  | and the size of the file. | 
|  | </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> | 
|  | This module is used by clients and thus does not react directly to user | 
|  | events. | 
|  | </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> | 
|  | The size of the XML file both in terms of the number of bytes as well as | 
|  | the number of elements and attributes. | 
|  | </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> | 
|  | Client code providing element identity may impact the performance of sync. | 
|  | However, invoking sync is done by the client as thus the impact will be | 
|  | reflected in the client module. There is no direct user interaction in | 
|  | this module. | 
|  | </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 | 
|  | options, etc.). | 
|  | </hint> | 
|  | </question> | 
|  | --> | 
|  | <answer id="resources-layer"> | 
|  | <p> | 
|  | no | 
|  | </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> | 
|  | no | 
|  | </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> | 
|  | no | 
|  | </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> | 
|  | no | 
|  | </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> | 
|  | no | 
|  | </p> | 
|  | </answer> | 
|  |  | 
|  | </api-answers> |