chart_class_dependencies.txt

Example usage of JavaClass::Dependencies::Graph: Iterate all classes of a classpath and construct the Java dependency graph.

Author:	Peter Kofler
Copyright:	Copyright (c) 2009, Peter Kofler.
License:	BSD License

Steps

 require 'javaclass/dsl/mixin'
 require 'javaclass/dependencies/graph'
 require 'javaclass/dependencies/class_node'
 require 'javaclass/dependencies/yaml_serializer'
 require 'javaclass/dependencies/graphml_serializer'

1) create the classpath of a given location

 cp = classpath(location)

 dependencies = JavaClass::Dependencies::Graph.new

2) iterate all classes of the classpath

 cp.values.each do |clazz|
   next unless clazz.access_flags.public?

3) add a JavaClass::Dependencies::ClassNode for each class to the graph

   dependencies.add(JavaClass::Dependencies::ClassNode.new(clazz))
 end

4) resolve all dependencies of all nodes in the graph. Now each class (Node) has a dependency to all imported classes (Nodes).

 dependencies.resolve_dependencies
 puts "#{dependencies.to_a.size} classes loaded"

5) save the result in various formats, e.g. GraphML or YAML, skipping outgoing edges information

 JavaClass::Dependencies::GraphmlSerializer.new(:edges => :no_text).save('class_dependencies', dependencies)
 JavaClass::Dependencies::YamlSerializer.new(:outgoing => :none).save('class_dependencies', dependencies)