The necessary locations for PL/Java’s components are determined by the rules of the PostgreSQL extension mechanism, not other platform rules that may apply to conventional Java libraries, for example.Ī packaging system’s built-in treatment for Java libraries may even actively break PL/Java. Not recommended: Java application or library guidelinesįormal guidelines developed for packaging Java applications or libraries are likely to impose requirements that have no value or are inappropriate in PL/Java’s case. It is only usable within PostgreSQL under its own distinctive rules.
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It is neither something that can run on its own as an application, nor a library that would be placed on the classpath in the usual fashion for other Java code to use. It has nearly nothing in common with “Java applications” or “Java libraries” as those are commonly understood. PL/Java has the most in common with other PostgreSQL extensions (even though it happens to involve Java). That may force a judgment as to which of those categories PL/Java falls in.
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Your package may be for a distribution that has formal guidelines for how to package software in certain categories, such as “Java applications”, “Java libraries”, or “PostgreSQL extensions”.
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A fix for this option on Windows is unlikely (see issue 190) if preparing a package for Windows, it will be simplest to use a patch that changes the definition of PLJAVA_LIBJVMDEFAULT in pljava-so/src/main/c/Backend.c. Note: when building on Windows, the -Dpljava.libjvmdefault option is likely to produce a failed build or the wrong stored value for the library path. When building a package, you are encouraged to set the default pljava.libjvm_location to the library of a JRE version that is expected to be present on your platform.
See here to find the exact file this should refer to. is the path to the JVM library shared object where it would be by default on your target platform. on the mvn command line when building, where the. When you package for a particular platform, you may have the advantage of knowing the conventional location for Java on that platform, and you can improve the PL/Java setup experience for users of your package by adding -Dpljava.libjvmdefault=. Users of a PL/Java source build nearly always have to set the PostgreSQL variable pljava.libjvm_location before the extension will work, because there is too much variation in where Java gets installed across systems for PL/Java to supply a useful default. What is the default pljava.libjvm_location? To minimize frustration for your users and yourself, please consider these notes when building your package. PL/Java reaches a larger community of potential users thanks to your efforts. If you are responsible for creating or maintaining a PL/Java package for a particular software distribution, thank you. Packaging PL/Java for a software distribution
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