Class: Naether::Java

Inherits:
Object
  • Object
show all
Includes:
Singleton
Defined in:
lib/naether/java.rb,
lib/naether/java/ruby.rb,
lib/naether/java/jruby.rb

Defined Under Namespace

Classes: JRuby, Ruby

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Java

Creates new instance by loading the Naether jar to the parent ClassLoader and creating the internal Naether ClassLoader



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# File 'lib/naether/java.rb', line 20

def initialize()
  naether_jar = Naether::Configuration.naether_jar
  
  unless File.exists? naether_jar
    raise "Cannot create Naether::Java: #{naether_jar} does not exist"
  end
  
  if Naether::Configuration.platform == 'java'
    require "#{File.dirname(__FILE__)}/java/jruby"
    @java = Naether::Java::JRuby.new
  else
    require "#{File.dirname(__FILE__)}/java/ruby"
    @java = Naether::Java::Ruby.new
  end
end

Instance Attribute Details

#java ⇒ Object (readonly)

Returns the value of attribute java.



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# File 'lib/naether/java.rb', line 14

def java
  @java
end

Class Method Details

.convert_to_java_list(ruby_array) ⇒ java.util.ArrayList

Convert a Ruby Array to a java.util.ArrayList

Parameters:

  • ruby_array (Array) —

    to convert to Java.util.ArrayList

Returns:

  • (java.util.ArrayList) 


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# File 'lib/naether/java.rb', line 94

def self.convert_to_java_list( ruby_array )
  instance.java.convert_to_java_list( ruby_array )
end

.convert_to_ruby_array(java_array, to_string = false) ⇒ Array

Convert a java,util.List to a Ruby Array

Parameters:

  • java_array (java.util.ArrayList)
  • to_string (Boolean) (defaults to: false) —

    platform dependent helper

Returns:

  • (Array) 


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# File 'lib/naether/java.rb', line 105

def self.convert_to_ruby_array( java_array, to_string = false )
  instance.java.convert_to_ruby_array( java_array, to_string )
end

.convert_to_ruby_hash(java_hash, to_string = false) ⇒ Hash

Convert a java.util.Map to a Ruby Hash

Parameters:

  • java_hash (java.util.Map)
  • to_string (Boolean) (defaults to: false) —

    platform dependent helper

Returns:

  • (Hash) 


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# File 'lib/naether/java.rb', line 116

def self.convert_to_ruby_hash( java_hash, to_string = false )
  instance.java.convert_to_ruby_hash( java_hash, to_string )
end

.create(target_class, *args) ⇒ Object

Create a Java Object from the Naether Class Loader

Parameters:

  • target_class (String) —

    to create

  • args (Array) —

    Array of constructor arguments



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# File 'lib/naether/java.rb', line 72

def self.create( target_class, *args )
  instance.java.create( target_class, *args )
end

.exec_static_method(target_class, target_method, params, types = nil) ⇒ Object

Execute a Staic method on a Java class from the Naether Class Loader

Parameters:

  • target_class (String)
  • target_method (String)
  • params (Array) —

    Array of method parameters

  • types (Array) (defaults to: nil) —

    if defined, a Array of String classes of params type that lines up with params one to one.

Returns:

  • (Object) 


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# File 'lib/naether/java.rb', line 84

def self.exec_static_method( target_class, target_method, params, types = nil ) 
  instance.java.exec_static_method( target_class, target_method, params, types )
end

.internal_load_paths(paths) ⇒ Object

Load a path into the internal Naether ClassLoader

Parameters:

  • paths (Array) —

    as an Array of String paths or a String path



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# File 'lib/naether/java.rb', line 63

def self.internal_load_paths(paths)
  instance.java.internal_load_paths(paths)
end

.internal_loaded_paths ⇒ Object 



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# File 'lib/naether/java.rb', line 54

def self.internal_loaded_paths
  convert_to_ruby_array( instance.java.class_loader.getLoadedPaths, true )
end

.load_paths(paths) ⇒ Object

Load a path onto the parent ClassLoader

Parameters:

  • paths (Array) —

    as an Array of String paths or a String path



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# File 'lib/naether/java.rb', line 50

def self.load_paths(paths)
  instance.java.load_paths(paths)
end

.loaded_paths ⇒ Array

Paths loaded

Returns:

  • (Array) —

    of String paths



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# File 'lib/naether/java.rb', line 41

def self.loaded_paths
  instance.java.loaded_paths
end