Class: BindIt::JarLoader

Inherits:
Object
  • Object
show all
Defined in:
lib/bind-it/jar_loader.rb

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.jvm_args ⇒ Object

An array of flags to pass to the JVM machine.



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# File 'lib/bind-it/jar_loader.rb', line 8

def jvm_args
  @jvm_args
end

.log_file ⇒ Object

A log file to send JVM output to.



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# File 'lib/bind-it/jar_loader.rb', line 10

def log_file
  @log_file
end

Class Method Details

.init_rjb ⇒ Object

Load Rjb and create Java VM.



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# File 'lib/bind-it/jar_loader.rb', line 44

def self.init_rjb
  ::Rjb::load(nil, self.jvm_args)
  set_java_logging if self.log_file
end

.load(jar, path) ⇒ Object

Load a JAR through Jruby/Rjb.



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# File 'lib/bind-it/jar_loader.rb', line 18

def self.load(jar, path)
  if !::File.readable?(path + jar)
    raise "Could not find JAR file " +
    "(looking in #{path}#{jar})."
  end
  if RUBY_PLATFORM =~ /java/
    set_java_logging if self.log_file
    load_jar_jruby(jar,path)
  else
    load_jar_rjb(jar,path)
  end
end

.load_jar_jruby(jar, path) ⇒ Object

Load a Jruby jar.



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# File 'lib/bind-it/jar_loader.rb', line 32

def self.load_jar_jruby(jar, path)
  require path + jar
end

.load_jar_rjb(jar, path) ⇒ Object

Laad an Rjb jar.



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# File 'lib/bind-it/jar_loader.rb', line 37

def self.load_jar_rjb(jar,path)
  self.init_rjb unless ::Rjb::loaded?
  jar = path + jar
  ::Rjb::add_jar(jar)
end

.set_java_logging ⇒ Object

Redirect the output of the JVM to log.



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# File 'lib/bind-it/jar_loader.rb', line 50

def self.set_java_logging
  system, print_stream, file = nil, nil, nil
  if RUBY_PLATFORM =~ /java/
    system = java.lang.System
    print_stream = java.io.PrintStream
    file = java.io.File
  else
    system = Rjb::import('java.lang.System')
    print_stream = Rjb::import('java.io.PrintStream')
    file = Rjb::import('java.io.File')
  end
  ps = print_stream.new(file.new(self.log_file))
  ps.write(::Time.now.strftime("[%m/%d/%Y at %I:%M%p]\n\n"))
  system.setOut(ps)
  system.setErr(ps)
end