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== Introduction ==
== Introduction ==
This page represents Fedora guidelines for packaging libraries and applications written in Java and related languages using Java Virtual Machine as bytecode interpreter.  
This page represents Fedora guidelines for packaging libraries and applications written in Java and related languages using Java Virtual Machine as bytecode interpreter. It '''DOES NOT''' aim to extensively describe packaging techniques and tips. RPM macros and commands used here are documented in man pages. Furthermore a separate [https://fedorahosted.org/released/javapackages/doc/ Java Packaging HOWTO] describes Java packaging techniques in detail and includes examples, templates and documentation aimed at packagers and Java developers who are taking their first steps in Java RPM packaging.


Fedora Java packaging is originally based on [http://www.jpackage.org JPackage Project] standards. Over time we have diverged in packaging tools in most areas but we mostly keep backward compatibility with older packages that make use of JPackage standards.


=== The Basics ===
The term Java means many things to many people:  a class library, a bytecode interpreter, a JIT compiler, a language specification, etc.  For the vast majority of users and developers, Java is a programming language and runtime environment that is architecture- and OS-agnostic.  The normal flow of code is <code>.java</code> (source file) <code>.class</code> (Java bytecode) <code>.jar</code> (a zip archive).  In the majority of cases, a user executes a Java program by specifying a class name containing a main method (just like C and C++).  Often, this is done by invoking the <code>java</code> binary with a list of JAR files specifying the classpath like so:


<code>java [-cp <jar1:jar2:jar3>]  <main-class> [<args>] </code>
== Package naming ==


== Java Packaging ==
Packages '''MUST''' follow the standard Fedora [[Packaging/NamingGuidelines | package naming guidelines]].
Fedora Java packaging is originally based on [http://www.jpackage.org JPackage Project] standards. Over time we have diverged in packaging tools in most areas but we mostly keep backward compatibility with older packages that make use of JPackage standards.


=== Package naming ===
Java API documentation '''MUST''' be placed into a sub-package called <code>%{name}-javadoc</code>.


Packages '''MUST''' follow the standard Fedora [[Packaging/NamingGuidelines]].
== Release tags ==
Packages '''MUST''' follow the standard Fedora [[Packaging/NamingGuidelines#Package_Versioning | package versioning guidelines]].


Java API documentation '''MUST''' be placed into a sub-package called <code>%{name}-javadoc</code>.
== Pre-built dependencies ==
Packages '''MUST''' follow the standard Fedora [[Packaging:Guidelines#No_inclusion_of_pre-built_binaries_or_libraries | dependency bundling guidelines]].


==== Release tags ====
In particular <code>*.class</code> and <code>*.jar</code> files from upstream releases '''MUST NOT''' be used during build of Fedora packages and they '''MUST NOT''' be included in binary RPM.
Packages '''MUST''' follow the standard Fedora [[Packaging/NamingGuidelines#Package_Version | Package versioning guidelines]].


=== JAR file installation ===
== JAR file installation ==


The following applies to all JAR files except [[#JNI|JNI-using JAR files]] and application-specific JAR files (ie. JAR files that can only reasonably be used as part of an application and therefore constitute application-private data).
The following applies to all JAR files except [[#JNI|JNI-using JAR files]] and application-specific JAR files (ie. JAR files that can only reasonably be used as part of an application and therefore constitute application-private data).


==== Split JAR files ====
=== Split JAR files ===


If a project offers the choice of packaging it as a single monolithic JAR or several ones, the split packaging '''SHOULD''' be preferred.
If a project offers the choice of packaging it as a single monolithic JAR or several ones, the split packaging '''SHOULD''' be preferred.


==== Filenames ====
=== Installation directory ===
 
* All architecture-independent JAR files '''MUST''' go into <code>%{_javadir}</code> or its subdirectory.
 
* For installation of architecture dependent JAR files, see [[#Packaging_JAR_files_that_use_JNI|Packaging JAR files that use JNI]].
 
=== Filenames ===


* If the package provides a '''single''' JAR file installed filename '''MUST''' be <code>%{name}.jar</code>.
* If the package provides a '''single''' JAR file installed filename '''SHOULD''' be <code>%{name}.jar</code>.
* If the package provides '''multiple''' JAR file, files '''MUST''' be installed in a <code>%{name}</code> subdirectory
* If the package provides '''multiple''' JAR file, files '''SHOULD''' be installed in a <code>%{name}</code> subdirectory
* Versioned JAR files (<code>*-%{version}.jar</code>) '''MUST NOT''' be installed unless the package is a compatibility package
* Versioned JAR files (<code>*-%{version}.jar</code>) '''MUST NOT''' be installed unless the package is a compatibility package
* Packages '''CAN''' provide alternative filenames as long as they do not conflict with other packages
* Packages '''CAN''' provide alternative filenames as long as they do not conflict with other packages
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{{admon/note|Note|Here %{name} refers either to package name, or name of subpackage where the jar is installed.}}
{{admon/note|Note|Here %{name} refers either to package name, or name of subpackage where the jar is installed.}}


==== Installation directory ====
== BuildRequires and Requires ==
Java packages '''MUST''' BuildRequire their respective build system:
* <code>BuildRequires: maven-local</code> for packages built with Maven
* <code>BuildRequires: ant</code> for packages built with ant
* <code>BuildRequires: java-devel</code> for packages built with javac


* All architecture-independent JAR files '''MUST''' go into <code>%{_javadir}</code> or a Java-version specific directory <code>%{_javadir}-<i>*</i></code> as appropriate[http://lists.fedoraproject.org/pipermail/packaging/2010-January/006792.html]. Packages '''CAN''' place JAR files into subdirectories.
Java binary packages or their dependencies '''MUST''' have Requires (generated by RPM or manual) on:
* <code>java-headless</code> or <code>java-headless >= 1:minimal_required_version</code>
* <code>jpackage-utils</code>


* For installation of architecture dependent JAR files, see [[#Packaging_JAR_files_that_use_JNI|Packaging JAR files that use JNI]]
If java-headless requirement is insufficient package '''MUST''' have Requires:
* <code>java</code> or <code>java >= 1:minimal_required_version</code>


=== Compatibility packages ===
== Javadoc installation ==
In certain cases it might be necessary to create compatibility packages that provide older API/ABI level of the same library. However creating these compatibility packages is strongly discouraged. To standardize and simplify packaging of such compatibility packages following rules apply:
 
* Compatibility packages are named in the same way as original except addition of version to package name,
* Any JAR or POM files '''MUST''' be versioned.
 
{{admon/note|Ant and Maven compatibility|build-classpath and related tools will resolve versioned jar files if versioned jar is asked for. Maven will use dependency information will return versioned jar if it matches the version asked for in the pom file.}}
 
=== Javadoc installation ===


* Java API documentation uses a system known as Javadoc.  All javadocs '''MUST''' be created and installed into a directory of <code>%{_javadocdir}/%{name}</code>.  
* Java API documentation uses a system known as Javadoc.  All javadocs '''MUST''' be created and installed into a directory of <code>%{_javadocdir}/%{name}</code>.  
Line 61: Line 65:
* The javadoc subpackage '''MUST''' be declared <code>noarch</code> even if main package is architecture specific.
* The javadoc subpackage '''MUST''' be declared <code>noarch</code> even if main package is architecture specific.


=== BuildRequires and Requires ===
== No class-path in MANIFEST.MF ==
At a minimum, Java packages '''MUST''':
* JAR files '''MUST NOT''' include <code>classh-path</code> entry inside META-INF/MANIFEST.MF


<pre>BuildRequires:  java-devel [>= specific_version]
== Hardcoded paths ==
BuildRequires: jpackage-utils
Packages '''MUST NOT''' hardcode paths to JAR files they use. When package needs to reference a JAR file, packager '''SHOULD''' use one of tools designed to locating JAR files in the system.


Requires:      java [>= specific_version]
== Maven pom.xml files ==
Requires:      jpackage-utils
If upstream project is shipping Maven <code>pom.xml</code> files, these '''MUST''' be installed. Additionally package '''MUST''' install mapping between upstream artifact and filesystem by using either <code>%mvn_install</code> or <code>%add_maven_depmap</code> macros.
</pre>


For historical reasons, when specifying versions 1.6.0 or greater, an epoch of 1 must be included.  Example:
{{admon/note|Additional documentation|Usage of %add_maven_depmap macro is documented in detail in [https://fedorahosted.org/released/javapackages/doc/#_add_maven_depmap_macro Java Packaging HOWTO].}}


<pre>BuildRequires:  java >= 1:1.6.0
</pre>


=== build-classpath ===
If upstream project does not ship Maven <code>pom.xml</code> file, official [http://mvnrepository.com/ maven repository] should be searched and if there are <code>pom.xml</code> files they '''SHOULD''' be installed.
<code>build-classpath</code> is a script that can be used to generate classpaths from generic names of JAR files. Example:


<pre>export CLASSPATH=$(build-classpath commons-logging commons-net xbean/xbean-reflect)
If modifications to Maven pom.xml files are needed <code>%pom_*</code> family of macros '''SHOULD''' be used
</pre>
{{admon/note|Additional information|You can use either jar filename or directory name relative to %{_javadir}, %{_jnidir} or %{_javajnidir} (all jar files will be included).}}


=== build-jar-repository ===
{{admon/note|Additional documentation|Usage of %pom_* macros is documented in detail in [https://fedorahosted.org/released/javapackages/doc/#helper_macros Java Packaging HOWTO].}}
<code>build-jar-repository</code> is similar to <code>build-classpath</code> but instead of producing a classpath entry, it creates symlinks in a given directory.  Example:
<pre>$ mkdir lib
$ build-jar-repository -s -p lib commons-logging commons-net
$ ls -l lib
commons-logging.jar -> /usr/share/java/commons-logging.jar
commons-net.jar -> /usr/share/java/commons-net.jar
</pre>


=== Maven pom.xml files and depmaps ===
== Wrapper Scripts ==
If upstream project is shipping Maven <code>pom.xml</code> files, these '''MUST''' be installed. Additionally they '''MUST''' install corresponding depmaps by calling <code>%add_maven_depmap</code> macro.
Applications wishing to provide a convenient method of execution '''SHOULD''' provide a wrapper script in <code>%{_bindir}</code>. Packages '''SHOULD''' use <code>%jpackage_script</code> to create these wrapper scripts.


Example:
{{admon/note|Additional documentation|Usage of %jpackage_script macro is documented in [https://fedorahosted.org/released/javapackages/doc/#_generating_application_shell_scripts Java Packaging HOWTO].}}
<pre>
...
%install
...
install -pm 644 pom.xml $RPM_BUILD_ROOT/%{_mavenpomdir}/JPP-%{name}.pom
%add_maven_depmap JPP-%{name}.pom %{name}.jar
...
</pre>


== Compatibility packages ==
In certain cases it might be necessary to create compatibility packages that provide older API/ABI level of the same library. However creating these compatibility packages is strongly discouraged. To standardize and simplify packaging of such compatibility packages following rules apply:


=== Wrapper Scripts ===
* Compatibility packages '''MUST''' be named in the same way as original except addition of version to package name,
Applications wishing to provide a convenient method of execution '''SHOULD''' provide a wrapper script in <code>%{_bindir}</code>. 
* Any JAR and POM files '''MUST''' be versioned.
 
The jpackage-utils package contains a convenience <code>%jpackage_script</code> macro that can be used to create scripts that work for the majority of packages.  See its definition and documentation in <code>/etc/rpm/macros.jpackage</code>.  One thing to pay attention to is the 6th argument to it - whether to prefer a JRE over a full SDK when looking up a JVM to invoke - most packages that don't require the full Java SDK will want to set that to <code>true</code> to avoid unexpected results when looking up a JVM when some of the installed JRE's don't have the corresponding SDK (*-devel package) installed.
 
<pre>
%install
...
%jpackage_script com.sun.msv.driver.textui.Driver "" "" msv-msv:msv-xsdlib:relaxngDatatype:isorelax msv true
...
</pre>
The previous example installs the "msv" script (5th argument) with main class being com.sun.msv.driver.textui.Driver (1st argument). No optional flags (2nd argument) or options (3rd argument) are used. This script will add several libraries to classpath before executing main class (4th argument, jars separated with ":"). <code>build-classpath</code> is run on every part of 4th argument to create full classpaths.
 
=== -devel packages ===
<code>-devel</code> packages don't really make sense for Java packages.  Header files do not exist for Java packages.
 
== Specfile Template ==
=== Apache Ant ===
 
<pre>
Name:          # see normal package guidelines
Version:        # see normal package guidelines
Release:        1%{?dist}
Summary:        # see normal package guidelines
 
License:        # see normal package guidelines
URL:            # see normal package guidelines
Source0:        # see normal package guidelines
BuildArch:      noarch
 
BuildRequires:  ant
 
Requires:      jpackage-utils
Requires:      java
 
%description
 
%package javadoc
Summary:        API documentation for %{name}
 
%description javadoc
This package contains %{summary}.
 
%prep
%setup -q
find -name \*.jar -o -name \*.class -delete
 
%build
ant
 
%install
 
mkdir -p $RPM_BUILD_ROOT%{_javadir}
cp -p [build path to jar] $RPM_BUILD_ROOT%{_javadir}/%{name}.jar
 
mkdir -p $RPM_BUILD_ROOT%{_javadocdir}/%{name}
cp -rp [javadoc directory] $RPM_BUILD_ROOT%{_javadocdir}/%{name}
 
%files
%{_javadir}/%{name}.jar
%doc LICENSE
 
%files javadoc
%{_javadocdir}/%{name}
%doc LICENSE
 
%changelog
</pre>
 
 
 
=== Apache Maven ===
<pre>
Name:          # see normal package guidelines
Version:        # see normal package guidelines
Release:        1%{?dist}
Summary:        # see normal package guidelines
 
License:        # see normal package guidelines
URL:            # see normal package guidelines
Source0:        # see normal package guidelines
BuildArch:      noarch
 
BuildRequires:  maven-local
 
%description
some smart and long description.
 
%package javadoc
Summary:        API documentation for %{name}
 
%description javadoc
This package contains %{symmary}.
 
%prep
%setup -q
 
%build
%mvn_build
 
%install
%mvn_install
 
%files -f .mfiles
%dir %{_javadir}/%{name}
%doc LICENSE
 
%files javadoc -f .mfiles-javadoc
%doc LICENSE
 
%changelog
 
</pre>


{{admon/note|Ant and Maven compatibility|build-classpath and related tools will resolve versioned jar files if versioned jar is asked for. Maven will use dependency information will return versioned jar if it matches the version asked for in the pom file.}}


== Packaging and using EE APIs ==
== Packaging and using EE APIs ==
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* JNI shared objects '''MUST''' be placed in <code>%{_libdir}/%{name}</code>  
* JNI shared objects '''MUST''' be placed in <code>%{_libdir}/%{name}</code>  


{{admon/note|Note|If the JNI-using code calls <code>System.loadLibrary</code> you'll have to patch it to use <code>System.load</code>, passing it the full path to the dynamic shared object.}}
{{admon/note|Note|If the JNI-using code calls <code>System.loadLibrary</code> you'll have to patch it to use <code>System.load</code>, passing it the full path to the dynamic shared object. You can look at the [[JavaSystemLoadExample|example]].}}
 
{{admon/note|Macro expansions|<code>%{_jnidir}</code> usually expands into <code>%{_prefix}/lib/java</code>. <code>%{_prefix}/lib64/java</code> will cease its existence and will be decomissioned}}
 
=== Example ===
To satisfy this Fedora requirement of using "System.load()" instead of "System.loadLibrary()" while still providing 32-bit versus 64-bit usability as well as complying with Java's write-once-run-anywhere goal, most JNI jar file should contain code similar to the following (as used in the pki-symkey JNI package):
<pre>
    static boolean tryLoad(String filename) {
        try {
            System.load(filename);
        } catch (Exception e) {
            return false;
        } catch (UnsatisfiedLinkError e) {
            return false;
        }
 
        return true;
    }
 
    // Load native library
    static {
        boolean mNativeLibrariesLoaded = false;
        String os = System.getProperty("os.name");
        if ((os.equals("Linux"))) {
            // Check for 64-bit library availability
            // prior to 32-bit library availability.
            mNativeLibrariesLoaded =
                    tryLoad("/usr/lib64/symkey/libsymkey.so");
            if (mNativeLibrariesLoaded) {
                System.out.println("64-bit symkey library loaded");
            } else {
                // REMINDER:  May be trying to run a 32-bit app
                //            on 64-bit platform.
                mNativeLibrariesLoaded =
                        tryLoad("/usr/lib/symkey/libsymkey.so");
                if (mNativeLibrariesLoaded) {
                    System.out.println("32-bit symkey library loaded");
                } else {
                    System.out.println("FAILED loading symkey library!");
                    System.exit(-1);
                }
            }
        } else {
            try {
                System.loadLibrary("symkey");
                System.out.println("symkey library loaded");
                mNativeLibrariesLoaded = true;
            } catch (Throwable t) {
                // This is bad news, the program is doomed at this point
                t.printStackTrace();
            }
        }
    }
</pre>
 
Packages utilizing approach of bundling so files as resources within JAR files themselves do not have these issues and are more self-contained.
 
=== Notes on multiarch ===
 
Our guidelines have never been completely multiarch-aware. So it was never really possible to install both i686 and x86_64 JNI-using java libraries. However guidelines complicated things by introducing usage of %{_libdir} and other directories. This version makes it clear we do not support multiarch for JNI-using packages.
 
Some of the complications with multiarch for JNI packages are:
* build-classpath and related tools would need to be aware what will be architecture of executing JVM
* build-jar-classpath would still not work for creating symlinks because it would create them on build architecture instead of runtime architecture
* Previous reasons cause creating of /usr/bin wrappers impractical
* Handling proper requires in RPM is impossible. For example package Z-native.i686 and JDK.x86_64 are installed. As far as RPM is concerned this would be enough to provide Z.noarch with needed "Requires: Z-native", but it would not work during runtime.
 
== Things to avoid ==
=== Pre-built JAR files / Other bundled software ===
Many Java projects re-ship their dependencies in their own releases.  This is unacceptable in Fedora.  All packages '''MUST''' be built from source and '''MUST''' enumerate their dependencies with <code>Requires</code>.  They '''MUST NOT''' build against or re-ship the pre-included JAR files but instead symlink out to the JAR files provided by dependencies.  There may arise rare cases that an upstream project is distributing JAR files that are actually not re-distributable
by Fedora.  In this situation, the JAR files themselves should not be redistributed -- even in the source zip.  A modified source zip should be created with some sort of modifier in the name (ex. -CLEAN) along with instructions for reproducing.  It is a good idea to have something similar to the following at the end of <code>%prep</code> (courtesy David Walluck):
 
<pre>
JAR files=""
for j in $(find -name \*.jar); do
if [ ! -L $j ] ; then
JAR files="$JAR files $j"
fi
done
if [ ! -z "$JAR files" ] ; then
echo "These JAR files should be deleted and symlinked to system JAR files: $JAR files"
exit 1
fi
</pre>


=== Javadoc scriptlets ===
{{admon/note|Macro expansions|<code>%{_jnidir}</code> expands into <code>%{_prefix}/lib/java</code>, even on 64-bit systems. Java packages using JNI do not support multiarch installation.}}
Older JPackage packages contained <code>%post</code> scriptlets creating <code>%ghost</code> symlinks. These '''MUST''' not appear in Fedora Java packages and are actively being removed at JPackage.


=== Selected rpmlint issues ===
==== class-path-in-manifest ====
Use <code>sed</code> to remove <code>class-path</code> elements in <code>MANIFEST.MF</code> (or whatever file is being used as the JAR manifest) prior to JAR creation.  Example:


<pre>
sed -i '/class-path/I d' META-INF/MANIFEST.MF
</pre>




[[Category:Java]]
[[Category:Java]]
[[Category:Packaging guidelines drafts]]
[[Category:Packaging guidelines drafts]]

Latest revision as of 17:59, 23 January 2014

These guidelines are laid out in order of relevance to packaging.


Introduction

This page represents Fedora guidelines for packaging libraries and applications written in Java and related languages using Java Virtual Machine as bytecode interpreter. It DOES NOT aim to extensively describe packaging techniques and tips. RPM macros and commands used here are documented in man pages. Furthermore a separate Java Packaging HOWTO describes Java packaging techniques in detail and includes examples, templates and documentation aimed at packagers and Java developers who are taking their first steps in Java RPM packaging.

Fedora Java packaging is originally based on JPackage Project standards. Over time we have diverged in packaging tools in most areas but we mostly keep backward compatibility with older packages that make use of JPackage standards.


Package naming

Packages MUST follow the standard Fedora package naming guidelines.

Java API documentation MUST be placed into a sub-package called %{name}-javadoc.

Release tags

Packages MUST follow the standard Fedora package versioning guidelines.

Pre-built dependencies

Packages MUST follow the standard Fedora dependency bundling guidelines.

In particular *.class and *.jar files from upstream releases MUST NOT be used during build of Fedora packages and they MUST NOT be included in binary RPM.

JAR file installation

The following applies to all JAR files except JNI-using JAR files and application-specific JAR files (ie. JAR files that can only reasonably be used as part of an application and therefore constitute application-private data).

Split JAR files

If a project offers the choice of packaging it as a single monolithic JAR or several ones, the split packaging SHOULD be preferred.

Installation directory

  • All architecture-independent JAR files MUST go into %{_javadir} or its subdirectory.

Filenames

  • If the package provides a single JAR file installed filename SHOULD be %{name}.jar.
  • If the package provides multiple JAR file, files SHOULD be installed in a %{name} subdirectory
  • Versioned JAR files (*-%{version}.jar) MUST NOT be installed unless the package is a compatibility package
  • Packages CAN provide alternative filenames as long as they do not conflict with other packages


Note.png
Note
Here %{name} refers either to package name, or name of subpackage where the jar is installed.

BuildRequires and Requires

Java packages MUST BuildRequire their respective build system:

  • BuildRequires: maven-local for packages built with Maven
  • BuildRequires: ant for packages built with ant
  • BuildRequires: java-devel for packages built with javac

Java binary packages or their dependencies MUST have Requires (generated by RPM or manual) on:

  • java-headless or java-headless >= 1:minimal_required_version
  • jpackage-utils

If java-headless requirement is insufficient package MUST have Requires:

  • java or java >= 1:minimal_required_version

Javadoc installation

  • Java API documentation uses a system known as Javadoc. All javadocs MUST be created and installed into a directory of %{_javadocdir}/%{name}.
  • Directory or symlink %{_javadocdir}/%{name}-%{version} SHOULD NOT exist.
  • The javadoc subpackage MUST be declared noarch even if main package is architecture specific.

No class-path in MANIFEST.MF

  • JAR files MUST NOT include classh-path entry inside META-INF/MANIFEST.MF

Hardcoded paths

Packages MUST NOT hardcode paths to JAR files they use. When package needs to reference a JAR file, packager SHOULD use one of tools designed to locating JAR files in the system.

Maven pom.xml files

If upstream project is shipping Maven pom.xml files, these MUST be installed. Additionally package MUST install mapping between upstream artifact and filesystem by using either %mvn_install or %add_maven_depmap macros.

Note.png
Additional documentation
Usage of %add_maven_depmap macro is documented in detail in Java Packaging HOWTO.


If upstream project does not ship Maven pom.xml file, official maven repository should be searched and if there are pom.xml files they SHOULD be installed.

If modifications to Maven pom.xml files are needed %pom_* family of macros SHOULD be used

Note.png
Additional documentation
Usage of %pom_* macros is documented in detail in Java Packaging HOWTO.

Wrapper Scripts

Applications wishing to provide a convenient method of execution SHOULD provide a wrapper script in %{_bindir}. Packages SHOULD use %jpackage_script to create these wrapper scripts.

Note.png
Additional documentation
Usage of %jpackage_script macro is documented in Java Packaging HOWTO.

Compatibility packages

In certain cases it might be necessary to create compatibility packages that provide older API/ABI level of the same library. However creating these compatibility packages is strongly discouraged. To standardize and simplify packaging of such compatibility packages following rules apply:

  • Compatibility packages MUST be named in the same way as original except addition of version to package name,
  • Any JAR and POM files MUST be versioned.
Note.png
Ant and Maven compatibility
build-classpath and related tools will resolve versioned jar files if versioned jar is asked for. Maven will use dependency information will return versioned jar if it matches the version asked for in the pom file.

Packaging and using EE APIs

There are a number of various project providing implementations for Java EE APIs. To simplify packaging and use of these APIs certain standardization is necessary.

EE API List

Following is a list of EE APIs as of Java EE 6[1] with chosen packages that provide implementations:

  • javax.activation - JDK
  • javax.annotation - JDK
  • javax.el - tomcat-el-2.2-api
  • javax.enterprise.inject - cdi-api
  • javax.inject - atinject
  • javax.jws - JDK
  • javax.mail - javamail
  • javax.management - JDK
  • javax.management.remote - JDK
  • javax.persistence - geronimo-jpa
  • javax.security.auth.message - geronimo-jaspic-spec
  • javax.servlet - tomcat-servlet-3.0-api
  • javax.servlet.jsp - glassfish-jsp/glassfish-jsp-api
  • javax.servlet.jsp.jstl - jakarta-taglibs-standard
  • javax.transaction - JDK
  • javax.ws.rs - jsr-311
  • javax.wsdl - wsdl4j
  • javax.xml - JDK
  • javax.xml.bind - JDK
  • javax.xml.rpc - axis
  • javax.xml.soap - JDK
  • javax.xml.stream - JDK
  • javax.xml.ws - JDK

Packages providing APIs

In addition to following generic guidelines they MUST:

  • Add Provides: javax.XXX from the EE API list
  • Add directory %{_javadir}/javax.XXX that will contain symlinks to all implementation jar files and their dependencies

At one time there CAN BE multiple API implementations but there MUST be at most one package having specific javax.XXX virtual provide.

Packages using APIs

Packages that need to use EE API SHOULD use:

  • Requires: javax.XXX from the EE API list
  • build-classpath javax.XXX or equivalent instead of relying on package-specific jar name.


Packaging JAR files that use JNI

Applicability

Java programs that wish to make calls into native libraries do so via the Java Native Interface (JNI). A Java package uses JNI if it contains a .so file. Note that this file can be embedded within JAR files themselves.

Stop (medium size).png Note that GCJ packages contain .sos in %{_libdir}/gcj/%{name} but they are not JNI .sos.

Guideline

  • JNI packages MUST follow guidelines of ordinary Java packages with exceptions listed here
  • JAR files using JNI or containing JNI shared objects themselves MUST be placed in %{_jnidir} and CAN BE symlinked to %{_libdir}/%{name}.
  • JNI shared objects MUST be placed in %{_libdir}/%{name}
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Note
If the JNI-using code calls System.loadLibrary you'll have to patch it to use System.load, passing it the full path to the dynamic shared object. You can look at the example.
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Macro expansions
%{_jnidir} expands into %{_prefix}/lib/java, even on 64-bit systems. Java packages using JNI do not support multiarch installation.