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http://git-wip-us.apache.org/repos/asf/hbase/blob/cb77a925/src/main/docbkx/appendix_acl_matrix.xml ---------------------------------------------------------------------- diff --git a/src/main/docbkx/appendix_acl_matrix.xml b/src/main/docbkx/appendix_acl_matrix.xml deleted file mode 100644 index a0d4695..0000000 --- a/src/main/docbkx/appendix_acl_matrix.xml +++ /dev/null @@ -1,662 +0,0 @@ -<?xml version="1.0" encoding="UTF-8"?> -<appendix version="5.0" xml:id="appendix_acl_matrix" - xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" - xmlns:xi="http://www.w3.org/2001/XInclude" xmlns:svg="http://www.w3.org/2000/svg" - xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:html="http://www.w3.org/1999/xhtml" - xmlns:db="http://docbook.org/ns/docbook"> - <!-- -/** - * 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. - */ ---> - - <title>Access Control Matrix</title> - <para>The following matrix shows the minimum permission set required to perform operations in - HBase. Before using the table, read through the information about how to interpret it.</para> - <variablelist> - <title>Interpreting the ACL Matrix Table</title> - <para>The following conventions are used in the ACL Matrix table:</para> - <varlistentry> - <term>Scopes</term> - <listitem> - <para>Permissions are evaluated starting at the widest scope and working to the - narrowest scope. A scope corresponds to a level of the data model. From broadest to - narrowest, the scopes are as follows::</para> - <itemizedlist> - <listitem><para>Global</para></listitem> - <listitem><para>Namespace (NS)</para></listitem> - <listitem><para>Table</para></listitem> - <listitem><para>Column Family (CF)</para></listitem> - <listitem><para>Column Qualifier (CQ)</para></listitem> - <listitem><para>Cell</para></listitem> - </itemizedlist> - <para>For instance, a permission granted at table level dominates any grants done at - the Column Family, Column Qualifier, or cell level. The user can do what that - grant implies at any location in the table. A permission granted at global scope - dominates all: the user is always allowed to take that action everywhere.</para> - </listitem> - </varlistentry> - <varlistentry> - <term>Permissions</term> - <listitem> - <para>Possible permissions include the following:</para> - <itemizedlist> - <listitem><para>Superuser - a special user that belongs to group "supergroup" and has - unlimited access</para></listitem> - <listitem><para>Admin (A)</para></listitem> - <listitem><para>Create (C)</para></listitem> - <listitem><para>Write (W)</para></listitem> - <listitem><para>Read (R)</para></listitem> - <listitem><para>Execute (X)</para></listitem> - </itemizedlist> - </listitem> - </varlistentry> - </variablelist> - - <para>For the most part, permissions work in an expected way, with the following caveats:</para> - <itemizedlist> - <listitem> - <para>Having Write permission does not imply Read permission. It is possible and sometimes - desirable for a user to be able to write data that same user cannot read. One such example - is a log-writing process.</para> - </listitem> - <listitem> - <para>The <systemitem>hbase:meta</systemitem> table is readable by every user, regardless - of the user's other grants or restrictions. This is a requirement for HBase to - function correctly.</para> - </listitem> - <listitem> - <para><code>CheckAndPut</code> and <code>CheckAndDelete</code> operations will fail if - the user does not have both Write and Read permission.</para> - </listitem> - <listitem> - <para><code>Increment</code> and <code>Append</code> operations do not require Read - access.</para> - </listitem> - </itemizedlist> - - <para>The following table is sorted by the interface that provides each operation. In case the - table goes out of date, the unit tests which check for accuracy of permissions can be found - in - <filename>hbase-server/src/test/java/org/apache/hadoop/hbase/security/access/TestAccessController.java</filename>, - and the access controls themselves can be examined in - <filename>hbase-server/src/main/java/org/apache/hadoop/hbase/security/access/AccessController.java</filename>.</para> - - <table frame="all"> - <title>ACL Matrix</title> - <tgroup cols="4"> - <thead> - <row> - <entry>Interface</entry> - <entry>Operation</entry> - <entry>Minimum Scope</entry> - <entry>Minimum Permission</entry> - </row> - </thead> - <tbody> - <row> - <entry morerows="27"> - <!-- incrememt this if you add another "master" operation --> - <para>Master</para> - </entry> - <entry> - <para>createTable</para> - </entry> - <entry> - <para>Global</para> - </entry> - <entry> - <para>C</para> - </entry> - </row> - <row> - <entry> - <para>modifyTable</para> - </entry> - <entry> - <para>Table</para> - </entry> - <entry> - <para>A|C</para> - </entry> - </row> - <row> - <entry> - <para>deleteTable</para> - </entry> - <entry> - <para>Table</para> - </entry> - <entry> - <para>A|C</para> - </entry> - </row> - <row> - <entry> - <para>truncateTable</para> - </entry> - <entry> - <para>Table</para> - </entry> - <entry> - <para>A|C</para> - </entry> - </row> - <row> - <entry> - <para>addColumn</para> - </entry> - <entry> - <para>Table</para> - </entry> - <entry> - <para>A|C</para> - </entry> - </row> - <row> - <entry> - <para>modifyColumn</para> - </entry> - <entry> - <para>Table</para> - </entry> - <entry> - <para>A|C</para> - </entry> - </row> - <row> - <entry> - <para>deleteColumn</para> - </entry> - <entry> - <para>Table</para> - </entry> - <entry> - <para>A|C</para> - </entry> - </row> - <row> - <entry> - <para>disableTable</para> - </entry> - <entry> - <para>Table</para> - </entry> - <entry> - <para>A|C</para> - </entry> - </row> - <row> - <entry> - <para>disableAclTable</para> - </entry> - <entry> - <para>None</para> - </entry> - <entry> - <para>Not allowed</para> - </entry> - </row> - <row> - <entry> - <para>enableTable</para> - </entry> - <entry> - <para>Table</para> - </entry> - <entry> - <para>A|C</para> - </entry> - </row> - <row> - <entry> - <para>move</para> - </entry> - <entry> - <para>Global</para> - </entry> - <entry> - <para>A</para> - </entry> - </row> - <row> - <entry> - <para>assign</para> - </entry> - <entry> - <para>Global</para> - </entry> - <entry> - <para>A</para> - </entry> - </row> - <row> - <entry> - <para>unassign</para> - </entry> - <entry> - <para>Global</para> - </entry> - <entry> - <para>A</para> - </entry> - </row> - <row> - <entry> - <para>regionOffline</para> - </entry> - <entry> - <para>Global</para> - </entry> - <entry> - <para>A</para> - </entry> - </row> - <row> - <entry> - <para>balance</para> - </entry> - <entry> - <para>Global</para> - </entry> - <entry> - <para>A</para> - </entry> - </row> - <row> - <entry> - <para>balanceSwitch</para> - </entry> - <entry> - <para>Global</para> - </entry> - <entry> - <para>A</para> - </entry> - </row> - <row> - <entry> - <para>shutdown</para> - </entry> - <entry> - <para>Global</para> - </entry> - <entry> - <para>A</para> - </entry> - </row> - <row> - <entry> - <para>stopMaster</para> - </entry> - <entry> - <para>Global</para> - </entry> - <entry> - <para>A</para> - </entry> - </row> - <row> - <entry> - <para>snapshot</para> - </entry> - <entry> - <para>Global</para> - </entry> - <entry> - <para>A</para> - </entry> - </row> - <row> - <entry> - <para>clone</para> - </entry> - <entry> - <para>Global</para> - </entry> - <entry> - <para>A</para> - </entry> - </row> - <row> - <entry> - <para>restore</para> - </entry> - <entry> - <para>Global</para> - </entry> - <entry> - <para>A</para> - </entry> - </row> - <row> - <entry> - <para>deleteSnapshot</para> - </entry> - <entry> - <para>Global</para> - </entry> - <entry> - <para>A</para> - </entry> - </row> - <row> - <entry> - <para>createNamespace</para> - 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<entry>A</entry> - </row> - <row> - <entry> - <para>openRegion</para> - </entry> - <entry> - <para>Global</para> - </entry> - <entry> - <para>A</para> - </entry> - </row> - <row> - <entry>close</entry> - <entry>Global</entry> - <entry>A</entry> - </row> - <row> - <entry> - <para>closeRegion</para> - </entry> - <entry> - <para>Global</para> - </entry> - <entry> - <para>A</para> - </entry> - </row> - <row> - <entry> - <para>stopRegionServer</para> - </entry> - <entry> - <para>Global</para> - </entry> - <entry> - <para>A</para> - </entry> - </row> - <row> - <entry> - <para>rollHLog</para> - </entry> - <entry> - <para>Global</para> - </entry> - <entry> - <para>A</para> - </entry> - </row> - <row> - <entry> - <para>mergeRegions</para> - </entry> - <entry> - <para>Global</para> - </entry> - <entry> - <para>A</para> - </entry> - </row> - <row> - <entry>append</entry> - <entry>Table|CF|CQ</entry> - <entry>W</entry> - </row> - <row> - <entry>delete</entry> - <entry>Table|CF|CQ|Cell (if the user has write permission for all cells)</entry> - <entry>W</entry> - </row> - <row> - <entry>exists</entry> - <entry>Table|CF|CQ</entry> - <entry>R</entry> - </row> - <row> - <entry>get</entry> - <entry>Table|CF|CQ</entry> - <entry>R</entry> - </row> - <row> - <entry>getClosestRowBefore</entry> - <entry>Table|CF|CQ</entry> - <entry>R</entry> - </row> - <row> - <entry>increment</entry> - <entry>Table|CF|CQ</entry> - <entry>W</entry> - </row> - <row> - <entry>put</entry> - <entry>Table|CF|CQ</entry> - <entry>W</entry> - </row> - <row> - <entry> - <para>flush</para> - </entry> - <entry> - <para>Global|Table</para> - </entry> - <entry> - <para>A|C</para> - </entry> - </row> - <row> - <entry> - <para>split</para> - </entry> - <entry> - <para>Global|Table</para> - </entry> - <entry> - <para>A</para> - </entry> - </row> - <row> - <entry> - <para>compact</para> - </entry> - <entry> - <para>Global|Table</para> - </entry> - <entry> - <para>A|C</para> - </entry> - </row> - <row> - <entry>bulkLoadHFile</entry> - <entry>Table</entry> - <entry>W</entry> - </row> - <row> - <entry>prepareBulkLoad</entry> - <entry>Table</entry> - <entry>C</entry> - </row> - <row> - <entry>cleanupBulkLoad</entry> - <entry>Table</entry> - <entry>W</entry> - </row> - <row> - <entry>checkAndDelete</entry> - <entry>Table|CF|CQ</entry> - <entry>RW</entry> - </row> - <row> - <entry>checkAndPut</entry> - <entry>Table|CF|CQ</entry> - <entry>RW</entry> - </row> - <row> - <entry>incrementColumnValue</entry> - <entry>Table|CF|CQ</entry> - <entry>RW</entry> - </row> - <row> - <entry>scannerClose</entry> - <entry>Table</entry> - <entry>R</entry> - </row> - <row> - <entry>scannerNext</entry> - <entry>Table</entry> - <entry>R</entry> - </row> - <row> - <entry>scannerOpen</entry> - <entry>Table|CQ|CF</entry> - <entry>R</entry> - </row> - <row> - <entry> - <para>Endpoint</para> - </entry> - <entry> - <para>invoke</para> - </entry> - <entry>Endpoint</entry> - <entry> - <para>X</para> - </entry> - </row> - <row> - <entry morerows="3"> - <para>AccessController</para> - </entry> - <entry> - <para>grant</para> - </entry> - <entry>Global|Table|NS</entry> - <entry> - <para>A</para> - </entry> - </row> - <row> - <entry> - <para>revoke</para> - </entry> - <entry>Global|Table|NS</entry> - <entry> - <para>A</para> - </entry> - </row> - <row> - <entry> - <para>getUserPermissions</para> - </entry> - <entry> - <para>Global|Table|NS</para> - </entry> - <entry> - <para>A</para> - </entry> - </row> - <row> - <entry> - <para>checkPermissions</para> - </entry> - <entry> - <para>Global|Table|NS</para> - </entry> - <entry> - <para>A</para> - </entry> - </row> - </tbody> - </tgroup> - </table> -</appendix> http://git-wip-us.apache.org/repos/asf/hbase/blob/cb77a925/src/main/docbkx/appendix_contributing_to_documentation.xml ---------------------------------------------------------------------- diff --git a/src/main/docbkx/appendix_contributing_to_documentation.xml b/src/main/docbkx/appendix_contributing_to_documentation.xml deleted file mode 100644 index 2f19c7b..0000000 --- a/src/main/docbkx/appendix_contributing_to_documentation.xml +++ /dev/null @@ -1,426 +0,0 @@ -<?xml version="1.0" encoding="UTF-8"?> -<appendix version="5.0" xml:id="appendix_contributing_to_documentation" - xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" - xmlns:xi="http://www.w3.org/2001/XInclude" xmlns:svg="http://www.w3.org/2000/svg" - xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:html="http://www.w3.org/1999/xhtml" - xmlns:db="http://docbook.org/ns/docbook"> - <!-- -/** - * 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. - */ ---> - - <title>Contributing to Documentation</title> - <para>The Apache HBase project welcomes contributions to all aspects of the project, including - the documentation. In HBase, documentation includes the following areas, and probably some - others:</para> - <itemizedlist> - <listitem> - <para>The <link xlink:href="http://hbase.apache.org/book.html">HBase Reference - Guide</link> (this book)</para> - </listitem> - <listitem> - <para>The <link xlink:href="http://hbase.apache.org/">HBase website</link>e</para> - </listitem> - <listitem> - <para>The <link xlink:href="http://wiki.apache.org/hadoop/Hbase">HBase - Wiki</link></para> - </listitem> - <listitem> - <para>API documentation</para> - </listitem> - <listitem> - <para>Command-line utility output and help text</para> - </listitem> - <listitem> - <para>Web UI strings, explicit help text, context-sensitive strings, and others</para> - </listitem> - <listitem> - <para>Log messages</para> - </listitem> - <listitem> - <para>Comments in source files, configuration files, and others</para> - </listitem> - <listitem> - <para>Localization of any of the above into target languages other than English</para> - </listitem> - </itemizedlist> - <para>No matter which area you want to help out with, the first step is almost always to - download (typically by cloning the Git repository) and familiarize yourself with the HBase - source code. The only exception in the list above is the HBase Wiki, which is edited online. - For information on downloading and building the source, see <xref linkend="developer" - />.</para> - - <section> - <title>Getting Access to the Wiki</title> - <para>The HBase Wiki is not well-maintained and much of its content has been moved into the - HBase Reference Guide (this guide). However, some pages on the Wiki are well maintained, - and it would be great to have some volunteers willing to help out with the Wiki. To - request access to the Wiki, register a new account at <link - xlink:href="https://wiki.apache.org/hadoop/Hbase?action=newaccount" - >https://wiki.apache.org/hadoop/Hbase?action=newaccount</link>. Contact one of the - HBase committers, who can either give you access or refer you to someone who can.</para> - </section> - <section> - <title>Contributing to Documentation or Other Strings</title> - <para> If you spot an error in a string in a UI, utility, script, log message, or elsewhere, - or you think something could be made more clear, or you think text needs to be added - where it doesn't currently exist, the first step is to file a JIRA. Be sure to set the - component to <literal>Documentation</literal> in addition any other involved components. - Most components have one or more default owners, who monitor new issues which come into - those queues. Regardless of whether you feel able to fix the bug, you should still file - bugs where you see them.</para> - <para>If you want to try your hand at fixing your newly-filed bug, assign it to yourself. - You will need to clone the HBase Git repository to your local system and work on the - issue there. When you have developed a potential fix, submit it for review. If it - addresses the issue and is seen as an improvement, one of the HBase committers will - commit it to one or more branches, as appropriate.</para> - <procedure xml:id="submit_doc_patch_procedure"> - <title>Suggested Work flow for Submitting Patches</title> - <para>This procedure goes into more detail than Git pros will need, but is included in - this appendix so that people unfamiliar with Git can feel confident contributing to - HBase while they learn.</para> - <step> - <para>If you have not already done so, clone the Git repository locally. You only - need to do this once.</para> - </step> - <step> - <para>Fairly often, pull remote changes into your local repository by using the - <code>git pull</code> command, while your master branch is checked - out.</para> - </step> - <step> - <para>For each issue you work on, create a new branch. One convention that works - well for naming the branches is to name a given branch the same as the JIRA it - relates to:</para> - <screen language="bourne">$ git checkout -b HBASE-123456</screen> - </step> - <step> - <para>Make your suggested changes on your branch, committing your changes to your - local repository often. If you need to switch to working on a different issue, - remember to check out the appropriate branch.</para> - </step> - <step> - <para>When you are ready to submit your patch, first be sure that HBase builds - cleanly and behaves as expected in your modified branch. If you have made - documentation changes, be sure the documentation and website builds.</para> - <note> - <para>Before you use the <literal>site</literal> target the very first time, be - sure you have built HBase at least once, in order to fetch all the Maven - dependencies you need.</para> - </note> - <screen language="bourne">$ mvn clean install -DskipTests # Builds HBase</screen> - <screen language="bourne">$ mvn clean site -DskipTests # Builds the website and documentation</screen> - <para>If any errors occur, address them.</para> - </step> - <step> - <para>If it takes you several days or weeks to implement your fix, or you know that - the area of the code you are working in has had a lot of changes lately, make - sure you rebase your branch against the remote master and take care of any - conflicts before submitting your patch.</para> - <screen language="bourne"> -$ git checkout HBASE-123456 -$ git rebase origin/master - </screen> - </step> - <step> - <para>Generate your patch against the remote master. Run the following command from - the top level of your git repository (usually called - <literal>hbase</literal>):</para> - <screen language="bourne">$ git diff --no-prefix origin/master > HBASE-123456.patch</screen> - <para>The name of the patch should contain the JIRA ID. Look over the patch file to - be sure that you did not change any additional files by accident and that there - are no other surprises. When you are satisfied, attach the patch to the JIRA and - click the <guibutton>Patch Available</guibutton> button. A reviewer - will review your patch. If you need to submit a new version of the patch, leave - the old one on the JIRA and add a version number to the name of the new - patch.</para> - </step> - <step> - <para>After a change has been committed, there is no need to keep your local branch - around. Instead you should run <command>git pull</command> to get the new change - into your master branch.</para> - </step> - </procedure> - </section> - - <section> - <title>Editing the HBase Website</title> - <para>The source for the HBase website is in the HBase source, in the - <filename>src/main/site/</filename> directory. Within this directory, source for the - individual pages is in the <filename>xdocs/</filename> directory, and images referenced - in those pages are in the <filename>images/</filename> directory. This directory also - stores images used in the HBase Reference Guide.</para> - <para>The website's pages are written in an HTML-like XML dialect called xdoc, which has a - reference guide at <link - xlink:href="http://maven.apache.org/archives/maven-1.x/plugins/xdoc/reference/xdocs.html" - >http://maven.apache.org/archives/maven-1.x/plugins/xdoc/reference/xdocs.html</link>. - You can edit these files in a plain-text editor, an IDE, or an XML editor such as - XML Mind XML Editor (XXE) or Oxygen XML Author. </para> - <para>To preview your changes, build the website using the <command>mvn clean site - -DskipTests</command> command. The HTML output resides in the - <filename>target/site/</filename> directory. When you are satisfied with your - changes, follow the procedure in <xref linkend="submit_doc_patch_procedure"/> to submit - your patch.</para> - </section> - - <section> - <title>Editing the HBase Reference Guide</title> - <para>The source for the HBase Reference Guide is in the HBase source, in the - <filename>src/main/docbkx/</filename> directory. It is written in <link - xlink:href="http://www.docbook.org/">Docbook</link> XML. Docbook can be - intimidating, but you can typically follow the formatting of the surrounding file to get - an idea of the mark-up. You can edit Docbook XML files using a plain-text editor, an - XML-aware IDE, or a specialized XML editor.</para> - <para>Docbook's syntax can be picky. Before submitting a patch, be sure to build the output - locally using the <command>mvn site</command> command. If you do not get any build - errors, that means that the XML is well-formed, which means that each opening tag is - balanced by a closing tag. Well-formedness is not exactly the same as validity. Check - the output in <filename>target/docbkx/</filename> for any surprises before submitting a - patch.</para> - </section> - - <section> - <title>Auto-Generated Content</title> - <para>Some parts of the HBase Reference Guide, most notably <xref linkend="config.files"/>, - are generated automatically, so that this area of the documentation stays in sync with - the code. This is done by means of an XSLT transform, which you can examine in the - source at <filename>src/main/xslt/configuration_to_docbook_section.xsl</filename>. This - transforms the <filename>hbase-common/src/main/resources/hbase-default.xml</filename> - file into a Docbook output which can be included in the Reference Guide. Sometimes, it - is necessary to add configuration parameters or modify their descriptions. Make the - modifications to the source file, and they will be included in the Reference Guide when - it is rebuilt.</para> - <para>It is possible that other types of content can and will be automatically generated - from HBase source files in the future.</para> - </section> - - <section> - <title>Multi-Page and Single-Page Output</title> - <para>You can examine the <literal>site</literal> target in the Maven - <filename>pom.xml</filename> file included at the top level of the HBase source for - details on the process of building the website and documentation. The Reference Guide is - built twice, once as a single-page output and once with one HTML file per chapter. The - single-page output is located in <filename>target/docbkx/book.html</filename>, while the - multi-page output's index page is at <filename>target/docbkx/book/book.html</filename>. - Each of these outputs has its own <filename>images/</filename> and - <filename>css/</filename> directories, which are created at build time.</para> - </section> - - <section> - <title>Images in the HBase Reference Guide</title> - <para>You can include images in the HBase Reference Guide. For accessibility reasons, it is - recommended that you use a <figure> Docbook element for an image. This allows - screen readers to navigate to the image and also provides alternative text for the - image. The following is an example of a <figure> element.</para> - <programlisting language="xml"><![CDATA[<figure> - <title>HFile Version 1</title> - <mediaobject> - <imageobject> - <imagedata fileref="timeline_consistency.png" /> - </imageobject> - <textobject> - <phrase>HFile Version 1</phrase> - </textobject> - </mediaobject> -</figure>]]> - </programlisting> - <para>The <textobject> can contain a few sentences describing the image, rather than - simply reiterating the title. You can optionally specify alignment and size options in - the <imagedata> element.</para> - <para>When doing a local build, save the image to the - <filename>src/main/site/resources/images/</filename> directory. In the - <imagedata> element, refer to the image as above, with no directory component. The - image will be copied to the appropriate target location during the build of the - output.</para> - <para>When you submit a patch which includes adding an image to the HBase Reference Guide, - attach the image to the JIRA. If the committer asks where the image should be committed, - it should go into the above directory.</para> - </section> - - <section> - <title>Adding a New Chapter to the HBase Reference Guide</title> - <para>If you want to add a new chapter to the HBase Reference Guide, the easiest way is to - copy an existing chapter file, rename it, and change the ID and title elements near the - top of the file. Delete the existing content and create the new content. Then open the - <filename>book.xml</filename> file, which is the main file for the HBase Reference - Guide, and use an <xi:include> element to include your new chapter in the - appropriate location. Be sure to add your new file to your Git repository before - creating your patch. Note that the <filename>book.xml</filename> file currently contains - many chapters. You can only include a chapter at the same nesting levels as the other - chapters in the file. When in doubt, check to see how other files have been - included.</para> - </section> - - <section> - <title>Docbook Common Issues</title> - <para>The following Docbook issues come up often. Some of these are preferences, but others - can create mysterious build errors or other problems.</para> - <qandaset> - <qandaentry> - <question> - <para>What can go where?</para> - </question> - <answer> - <para>There is often confusion about which child elements are valid in a given - context. When in doubt, <link - xlink:href="http://docbook.org/tdg/en/html/docbook.html">Docbook: The - Definitive Guide</link> is the best resource. It has an appendix which - is indexed by element and contains all valid child and parent elements of - any given element. If you edit Docbook often, a schema-aware XML editor - makes things easier.</para> - </answer> - </qandaentry> - <qandaentry> - <question> - <para>Paragraphs and Admonitions</para> - </question> - <answer> - <para>It is a common pattern, and it is technically valid, to put an admonition - such as a <note> inside a <para> element. Because admonitions - render as block-level elements (they take the whole width of the page), it - is better to mark them up as siblings to the paragraphs around them, like - this:</para> - <programlisting language="xml"><![CDATA[<para>This is the paragraph.</para> -<note> - <para>This is an admonition which occurs after the paragraph.</para> -</note>]]></programlisting> - </answer> - </qandaentry> - <qandaentry> - <question> - <para>Wrap textual <listitem> and <entry> contents in <para> - elements.</para> - </question> - <answer> - <para>Because the contents of a <listitem> (an element in an itemized, - ordered, or variable list) or an <entry> (a cell in a table) can - consist of things other than plain text, they need to be wrapped in some - element. If they are plain text, they need to be inclosed in <para> - tags. This is tedious but necessary for validity.</para> - <programlisting language="xml"><![CDATA[<itemizedlist> - <listitem> - <para>This is a paragraph.</para> - </listitem> - <listitem> - <screen>This is screen output.</screen> - </listitem> -</itemizedlist>]]></programlisting> - </answer> - </qandaentry> - <qandaentry> - <question> - <para>When to use <command>, <code>, <programlisting>, - <screen></para> - </question> - <answer> - <para>The first two are in-line tags, which can occur within the flow of - paragraphs or titles. The second two are block elements.</para> - <para>Use <command> to mention a command such as <command>hbase - shell</command> in the flow of a sentence. Use <code> for other - inline text referring to code. Incidentally, use <literal> to specify - literal strings that should be typed or entered exactly as shown. Within a - <screen> listing, it can be helpful to use the <userinput> and - <computeroutput> elements to mark up the text further.</para> - <para>Use <screen> to display input and output as the user would - <emphasis>see</emphasis> it on the screen, in a log file, etc. Use - <programlisting> only for blocks of code that occur within a file, - such as Java or XML code, or a Bash shell script.</para> - </answer> - </qandaentry> - <qandaentry> - <question> - <para>How to escape XML elements so that they show up as XML</para> - </question> - <answer> - <para>For one-off instances or short in-line mentions, use the &lt; and - &gt; encoded characters. For longer mentions, or blocks of code, enclose - it with <![CDATA[<![CDATA[]]>]]>, which is much easier to maintain and - parse in the source files..</para> - </answer> - </qandaentry> - <qandaentry> - <question> - <para>Tips and tricks for making screen output look good</para> - </question> - <answer> - <para>Text within <screen> and <programlisting> elements is shown - exactly as it appears in the source, including indentation, tabs, and line - wrap.</para> - <itemizedlist> - <listitem> - <para>Indent the starting and closing XML elements, but do not indent - the content. Also, to avoid having an extra blank line at the - beginning of the programlisting output, do not put the CDATA - element on its own line. For example:</para> - <programlisting language="bourne"><![CDATA[ <programlisting> -case $1 in - --cleanZk|--cleanHdfs|--cleanAll) - matches="yes" ;; - *) ;; -esac - </programlisting>]]></programlisting> - </listitem> - <listitem> - <para>After pasting code into a programlisting, fix the indentation - manually, using two <emphasis>spaces</emphasis> per desired - indentation. For screen output, be sure to include line breaks so - that the text is no longer than 100 characters.</para> - </listitem> - </itemizedlist> - </answer> - </qandaentry> - <qandaentry> - <question> - <para>Isolate Changes for Easy Diff Review.</para> - </question> - <answer> - <para>Be careful with pretty-printing or re-formatting an entire XML file, even - if the formatting has degraded over time. If you need to reformat a file, do - that in a separate JIRA where you do not change any content. Be careful - because some XML editors do a bulk-reformat when you open a new file, - especially if you use GUI mode in the editor.</para> - </answer> - </qandaentry> - <qandaentry> - <question> - <para>Syntax Highlighting</para> - </question> - <answer> - <para>The HBase Reference Guide uses the <link - xlink:href="http://sourceforge.net/projects/xslthl/files/xslthl/2.1.0/" - >XSLT Syntax Highlighting</link> Maven module for syntax highlighting. - To enable syntax highlighting for a given <programlisting> or - <screen> (or possibly other elements), add the attribute - <literal>language=<replaceable>LANGUAGE_OF_CHOICE</replaceable></literal> - to the element, as in the following example:</para> - <programlisting language="xml"><![CDATA[ -<programlisting language="xml"> - <foo>bar</foo> - <bar>foo</bar> -</programlisting>]]></programlisting> - <para>Several syntax types are supported. The most interesting ones for the - HBase Reference Guide are <literal>java</literal>, <literal>xml</literal>, - <literal>sql</literal>, and <literal>bourne</literal> (for BASH shell - output or Linux command-line examples).</para> - </answer> - </qandaentry> - </qandaset> - </section> -</appendix> - - \ No newline at end of file