Class: HQ::Engine::SubProcessRuleProvider::Session

Inherits:
Object
  • Object
show all
Defined in:
lib/hq/engine/subprocess-rule-provider/session.rb

Instance Method Summary collapse

Constructor Details

#initialize(client, session_id) ⇒ Session

Returns a new instance of Session.



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# File 'lib/hq/engine/subprocess-rule-provider/session.rb', line 9

def initialize client, session_id
	@client = client
	@session_id = session_id
end

Instance Method Details

#compile_xquery(xquery_text, xquery_filename) ⇒ Object 



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# File 'lib/hq/engine/subprocess-rule-provider/session.rb', line 37

def compile_xquery xquery_text, xquery_filename

	request = {
		"name" => "compile xquery",
		"arguments" => {
			"session id" => @session_id,
			"xquery text" => xquery_text,
			"xquery filename" => xquery_filename,
		}
	}

	reply = @client.perform request

	case reply["name"]

		when "ok"

			return reply["arguments"]["result text"]

		when "error"

			arguments = reply["arguments"]

			exception =
				RuleError.new \
					arguments["file"],
					arguments["line"],
					arguments["column"],
					arguments["error"]

			raise exception

		else

			raise "Unknown response: #{reply["name"]}"

	end

end

#run_xquery(input_text, &callback) ⇒ Object 



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# File 'lib/hq/engine/subprocess-rule-provider/session.rb', line 77

def run_xquery input_text, &callback

	request = {
		"name" => "run xquery",
		"arguments" => {
			"session id" => @session_id,
			"input text" => input_text,
		}
	}

	# make call and process functions

	reply = nil

	loop do

		reply = @client.perform request

		break unless reply["name"] == "function call"

		function_return_values =
			callback.call \
				reply["arguments"]["name"],
				reply["arguments"]["arguments"]

		request = {
			"name" => "function return",
			"arguments" => {
				"values" => function_return_values,
			},
		}

	end

	# process response

	case reply["name"]

		when "ok"
			return reply["arguments"]["result text"]

		when "error"
			arguments = reply["arguments"]
			file = arguments["file"]
			file = "file" if file.empty?
			line = arguments["line"]
			column = arguments["column"]
			error = arguments["error"]
			raise "#{file}:#{line}:#{column} #{error}"

		else
			raise "Unknown response: #{reply["name"]}"
	end

end

#set_library_module(module_name, module_text) ⇒ Object 



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# File 'lib/hq/engine/subprocess-rule-provider/session.rb', line 14

def set_library_module module_name, module_text

	request = {
		"name" => "set library module",
		"arguments" => {
			"session id" => @session_id,
			"module name" => module_name,
			"module text" => module_text,
		}
	}

	reply = @client.perform request

	case reply["name"]

		when "ok"
			# do nothing

		else
			raise "Unknown response: #{reply["name"]}"
	end
end