io.airlift:parameternames

Utility methods for fetching the parameter names for a method or constructor

License	Apache License 2.0
GroupId	io.airlift
ArtifactId	parameternames
Last Version	1.5
Release Date	Oct 13, 2020
Type	jar
Description	Utility methods for fetching the parameter names for a method or constructor
Project URL	https://github.com/airlift/parameternames
Source Code Management	https://github.com/airlift/parameternames

Download parameternames

Filename	Size
parameternames-1.5.pom
parameternames-1.5.jar	106 KB
parameternames-1.5-tests.jar	5 KB
parameternames-1.5-test-sources.jar	2 KB
parameternames-1.5-sources.jar	671 KB
parameternames-1.5-javadoc.jar	23 KB

How to add to project

Apache Maven

<!-- https://jarcasting.com/artifacts/io.airlift/parameternames/ -->
<dependency>
    <groupId>io.airlift</groupId>
    <artifactId>parameternames</artifactId>
    <version>1.5</version>
</dependency>

Gradle Groovy

// https://jarcasting.com/artifacts/io.airlift/parameternames/
implementation 'io.airlift:parameternames:1.5'

Gradle Kotlin

// https://jarcasting.com/artifacts/io.airlift/parameternames/
implementation ("io.airlift:parameternames:1.5")

Apache Buildr

'io.airlift:parameternames:jar:1.5'

Apache Ivy

<dependency org="io.airlift" name="parameternames" rev="1.5">
  <artifact name="parameternames" type="jar" />
</dependency>

Groovy Grape

@Grapes(
@Grab(group='io.airlift', module='parameternames', version='1.5')
)

Scala SBT

libraryDependencies += "io.airlift" % "parameternames" % "1.5"

Leiningen

[io.airlift/parameternames "1.5"]

Dependencies

There are no dependencies for this project. It is a standalone project that does not depend on any other jars.

Project Modules

There are no modules declared in this project.

Parameter Names

Parameter Names contains utility methods for fetching the parameter names for a method or constructor.

Java 8 added the ability to access the parameter names of a method or constructor, but this only works if the code was compiled with the Java 8 version of javac with the -parameters option enabled. This utility falls back to reading parameters from the debug symbols in the method bytecode for classes compiled without the -parameters option enabled. Note that this fallback will not work for interfaces, as interface methods do not have bytecode and thus do not have debug symbols.

Usage

Simply, pass java.lang.reflect.Method or java.lang.reflect.Constructor to ParameterNames.getParameterNames. For example:

    Method method = ParameterNames.class.getMethod("getParameterNames", Executable.class);
    List<String> parameterNames = ParameterNames.getParameterNames(method);

Parameter names are loaded in the following order:

1. Java 8 reflection names created by javac with the -parameters option
2. Bytecode debug symbols created by javac with the -g option
3. Default name of argN where N is the index of the parameter starting from zero

Maven Dependency

<dependency>
    <groupId>io.airlift</groupId>
    <artifactId>parameternames</artifactId>
    <version>1.0</version>
</dependency>

License

Parameter Names is released under the Apache License, Version 2.0.

Versions

Version
1.5 Oct 13, 2020
1.4 Jun 11, 2019
1.3 Dec 15, 2017
1.2 Nov 21, 2017
1.1 Nov 8, 2017
1.0 May 1, 2017