May 26, 2018

Java library for locating resources (including classes)

The Discovery Component is about discovering, or finding, implementations for pluggable interfaces. It provides facilities instantiating classes in general, and for lifecycle management of singleton factory classes.

Fundamentally, Discovery locates classes that implement a given Java interface. The discovery pattern, though not necessarily this package, is used in many projects including JAXP SaxParserFactory and others and commons-logging LogFactory. By extracting this pattern, other projects can reuse it and take advantage of improvements to the pattern as Discovery evolves.

Discovery improves over previous implementations by establishing facilities for working within managed environments. These allow configuration and property overrides without appealing to the global System properties which are scoped across an entire JVM.

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