Class: Embulk::InputPlugin::JavaAdapter

Inherits:
Object
  • Object
show all
Includes:
Java::InputPlugin
Defined in:
lib/embulk/input_plugin.rb

Instance Method Summary collapse

Constructor Details

#initialize(ruby_class) ⇒ JavaAdapter

Returns a new instance of JavaAdapter.



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# File 'lib/embulk/input_plugin.rb', line 48

def initialize(ruby_class)
  @ruby_class = ruby_class
end

Instance Method Details

#cleanup(java_task_source, java_schema, task_count, java_task_reports) ⇒ Object 



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# File 'lib/embulk/input_plugin.rb', line 81

def cleanup(java_task_source, java_schema, task_count, java_task_reports)
  task_source = DataSource.from_java(java_task_source)
  schema = Schema.from_java(java_schema)
  task_reports = java_task_reports.map {|c| DataSource.from_java(c) }
  @ruby_class.cleanup(task_source, schema, task_count, task_reports)
  return nil
end

#guess(java_config) ⇒ Object 



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# File 'lib/embulk/input_plugin.rb', line 89

def guess(java_config)
  config = DataSource.from_java(java_config)
  config_diff_hash = @ruby_class.guess(config)
  return DataSource.from_ruby_hash(config_diff_hash).to_java
end

#resume(java_task_source, java_schema, task_count, java_control) ⇒ Object 



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# File 'lib/embulk/input_plugin.rb', line 66

def resume(java_task_source, java_schema, task_count, java_control)
  task_source = DataSource.from_java(java_task_source)
  schema = Schema.from_java(java_schema)
  config_diff_hash = @ruby_class.resume(task_source, schema, task_count) do |task_source_hash,columns,task_count|
    java_task_source = DataSource.from_ruby_hash(task_source_hash).to_java
    java_schema = Schema.new(columns).to_java
    java_task_reports = java_control.run(java_task_source, java_schema, task_count)
    java_task_reports.map {|java_task_report|
      DataSource.from_java(java_task_report)
    }
  end
  # TODO check return type of #resume
  return DataSource.from_ruby_hash(config_diff_hash).to_java
end

#run(java_task_source, java_schema, processor_index, java_output) ⇒ Object 



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# File 'lib/embulk/input_plugin.rb', line 95

def run(java_task_source, java_schema, processor_index, java_output)
  task_source = DataSource.from_java(java_task_source)
  schema = Schema.from_java(java_schema)
  page_builder = PageBuilder.new(schema, java_output)
  begin
    task_report_hash = @ruby_class.new(task_source, schema, processor_index, page_builder).run
    return DataSource.from_ruby_hash(task_report_hash).to_java
  ensure
    page_builder.close
  end
end

#transaction(java_config, java_control) ⇒ Object 



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# File 'lib/embulk/input_plugin.rb', line 52

def transaction(java_config, java_control)
  config = DataSource.from_java(java_config)
  config_diff_hash = @ruby_class.transaction(config) do |task_source_hash,columns,task_count|
    java_task_source = DataSource.from_ruby_hash(task_source_hash).to_java
    java_schema = Schema.new(columns).to_java
    java_task_reports = java_control.run(java_task_source, java_schema, task_count)
    java_task_reports.map {|java_task_report|
      DataSource.from_java(java_task_report)
    }
  end
  # TODO check return type of #transaction
  return DataSource.from_ruby_hash(config_diff_hash).to_java
end