module Buildr

  module OpenJPA

    VERSION = "0.9.7-incubating-SNAPSHOT"

    REQUIRES = [ "org.apache.openjpa:openjpa-all:jar:#{VERSION}",
      "commons-collections:commons-collections:jar:3.1",
      "commons-dbcp:commons-dbcp:jar:1.2.1", 
      "commons-lang:commons-lang:jar:2.1",
      "commons-pool:commons-pool:jar:1.2",
      "javax.persistence:persistence-api:jar:1.0",
      "org.apache.geronimo.specs:geronimo-j2ee-connector_1.5_spec:jar:1.0",
      "org.apache.geronimo.specs:geronimo-jta_1.0.1B_spec:jar:1.0",
      "net.sourceforge.serp:serp:jar:1.11.0" ]

    OPTIONS = [ :verbose, :noop, :cp, :classpath, :properties ]

    def self.enhance(options)
      options[:verbose] ||= Rake.application.options.trace || false
      fu_check_options options, *OPTIONS + [:output]

      runtool options.merge(:class=>"org.apache.openjpa.enhance.PCEnhancer", :name=>"Enhancer",
        :args=>{ "-p"=>options[:properties], "-d"=>options[:output] },
        :classpath=>options[:classpath] + [options[:output]])
    end

    def self.mapping_tool(options)
      options[:verbose] ||= Rake.application.options.trace || false
      fu_check_options options, *OPTIONS + [:action, :sql]

      runtool options.merge(:class=>"org.apache.openjpa.jdbc.meta.MappingTool", :name=>"Mapping Tool",
        :args=>{ "-p"=>options[:properties], "-sql"=>options[:sql], "-sa"=>options[:action] })
    end

  protected

    def self.runtool(options)
      args = [options[:class]] + options[:args].select { |n, v| v }.map { |n, v| [ n, v ] }.flatten
      args << { :classpath=>requires + (options[:classpath] || []),
                :name=>"OpenJPA #{options[:name]}", :verbose=>options[:verbose] }
      java *args
    end

    def self.requires()
      @required ||= artifacts(REQUIRES).each { |artifact| artifact.invoke }.map(&:to_s)
    end

  end

end