# HG changeset patch
# User František Kučera <franta-hg@frantovo.cz>
# Date 1578762810 -3600
# Node ID c64e1588f428708a3847e79206a52703e647caa8
# Parent  56409232e1a14132d8d33b184c892454099a81dd
rename --exec to --streamlet

diff -r 56409232e1a1 -r c64e1588f428 bash-completion.sh
--- a/bash-completion.sh	Sat Jan 11 00:58:35 2020 +0100
+++ b/bash-completion.sh	Sat Jan 11 18:13:30 2020 +0100
@@ -60,13 +60,13 @@
 	elif [[ "$w2" == "--option"        && "x$w0" == "x" ]];    then COMPREPLY=("''")
 	elif [[ "$w1" == "--file"                           ]];    then COMPREPLY=($(compgen -W "${FILE_FIELDS[*]}"  -- "$w0"))
 	elif [[ "$w1" == "--xattr"                          ]];    then COMPREPLY=($(compgen -W "${XATTR_FIELDS[*]}" -- "$w0"))
-	elif [[ "$w1" == "--exec"                           ]];    then COMPREPLY=($(compgen -W "$(_relpipe_in_filesystem_scripts)" -- "$w0"))
+	elif [[ "$w1" == "--streamlet"                      ]];    then COMPREPLY=($(compgen -W "$(_relpipe_in_filesystem_scripts)" -- "$w0"))
 	else
 		OPTIONS=(
 			"--relation"
 			"--file"
 			"--xattr"
-			"--exec"
+			"--streamlet"
 			"--as"
 			"--option"
 		)
diff -r 56409232e1a1 -r c64e1588f428 src/CLIParser.h
--- a/src/CLIParser.h	Sat Jan 11 00:58:35 2020 +0100
+++ b/src/CLIParser.h	Sat Jan 11 18:13:30 2020 +0100
@@ -51,7 +51,7 @@
 
 	static const string_t OPTION_FILE;
 	static const string_t OPTION_XATTR;
-	static const string_t OPTION_EXEC;
+	static const string_t OPTION_STREAMLET;
 	static const string_t OPTION_AS;
 	static const string_t OPTION_OPTION;
 	static const string_t OPTION_RELATION;
@@ -68,7 +68,7 @@
 			for (int i = 0; i < arguments.size();) {
 				string_t option = readNext(arguments, i);
 
-				if (option == CLIParser::OPTION_FILE || option == CLIParser::OPTION_XATTR || option == CLIParser::OPTION_EXEC) {
+				if (option == CLIParser::OPTION_FILE || option == CLIParser::OPTION_XATTR || option == CLIParser::OPTION_STREAMLET) {
 					addField(c, currentGroup, currentName, currentAliases, currentOptions); // previous field
 					currentGroup = option.substr(2); // cut off --
 					currentName = readNext(arguments, i);
@@ -115,7 +115,7 @@
 
 const string_t CLIParser::OPTION_FILE = L"--" + RequestedField::GROUP_FILE;
 const string_t CLIParser::OPTION_XATTR = L"--" + RequestedField::GROUP_XATTR;
-const string_t CLIParser::OPTION_EXEC = L"--" + RequestedField::GROUP_EXEC;
+const string_t CLIParser::OPTION_STREAMLET = L"--" + RequestedField::GROUP_STREAMLET;
 const string_t CLIParser::OPTION_AS = L"--as";
 const string_t CLIParser::OPTION_OPTION = L"--option";
 const string_t CLIParser::OPTION_RELATION = L"--relation";
diff -r 56409232e1a1 -r c64e1588f428 src/ExecAttributeFinder.h
--- a/src/ExecAttributeFinder.h	Sat Jan 11 00:58:35 2020 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,139 +0,0 @@
-/**
- * Relational pipes
- * Copyright © 2019 František Kučera (Frantovo.cz, GlobalCode.info)
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, version 3 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-#pragma once
-
-#include <vector>
-#include <filesystem>
-#include <regex>
-#include <memory>
-
-#include <relpipe/writer/typedefs.h>
-#include <relpipe/writer/AttributeMetadata.h>
-#include <relpipe/writer/RelationalWriter.h>
-
-#include "RequestedField.h"
-#include "SubProcess.h"
-#include "AttributeFinder.h"
-#include "ExecMsg.h"
-
-namespace relpipe {
-namespace in {
-namespace filesystem {
-
-namespace fs = std::filesystem;
-using namespace relpipe::writer;
-
-class ExecAttributeFinder : public AttributeFinder {
-private:
-	std::wstring_convert<codecvt_utf8<wchar_t>> convertor; // TODO: support also other encodings.
-	std::map<int, std::shared_ptr<SubProcess>> subProcesses;
-	std::map<int, std::vector<AttributeMetadata>> cachedMetadata;
-
-	string_t getExecCommand(const RequestedField& field) {
-		// TODO: move to another directory, exec, not script + use custom $PATH with no prefix
-		return SCRIPT_PREFIX + field.name;
-	}
-
-protected:
-
-	virtual void writeFieldOfExistingFile(RelationalWriter* writer, const RequestedField& field) override {
-		// TODO: paralelize also over records → fork multiple processes and distribute records across them; then collect results (with a lock)
-		if (field.group == RequestedField::GROUP_EXEC) {
-
-			subProcesses[field.id]->write({ExecMsg::INPUT_ATTRIBUTE, L"0", convertor.from_bytes(currentFileRaw), L"false"}); // index, value, isNull
-			subProcesses[field.id]->write({ExecMsg::WAITING_FOR_OUTPUT_ATTRIBUTES});
-
-			for (auto metadata : cachedMetadata[field.id]) {
-				SubProcess::Message m = subProcesses[field.id]->read();
-				if (m.code == ExecMsg::OUTPUT_ATTRIBUTE) writer->writeAttribute(m.parameters[0]);
-				else throw RelpipeWriterException(L"Protocol violation from exec sub-process while reading: „" + metadata.attributeName + L"“. Expected OUTPUT_ATTRIBUTE but got: " + m.toString());
-			}
-
-			SubProcess::Message m = subProcesses[field.id]->read();
-			if (m.code != ExecMsg::WAITING_FOR_INPUT_ATTRIBUTES) throw RelpipeWriterException(L"Protocol violation from exec sub-process. Expected WAITING_FOR_INPUT_ATTRIBUTES but got: " + m.toString());
-			// TODO: generic protocol violation error messages / method for checking responses
-		}
-	}
-
-public:
-
-	static const string_t SCRIPT_PREFIX;
-
-	virtual vector<AttributeMetadata> toMetadata(RelationalWriter* writer, const RequestedField& field) override {
-		if (field.group == RequestedField::GROUP_EXEC) {
-
-			if (cachedMetadata.count(field.id)) {
-				return cachedMetadata[field.id];
-			} else {
-
-				std::vector<string_t> commandLine = {getExecCommand(field)};
-				std::map<string_t, string_t> environment;
-
-				for (auto mn : ExecMsg::getMessageNames()) {
-					environment[L"EXEC_MSG_" + mn.second] = std::to_wstring(mn.first);
-					environment[L"EXEC_MSG_" + std::to_wstring(mn.first)] = mn.second;
-				}
-
-				shared_ptr<SubProcess> subProcess(SubProcess::create(commandLine, environment, false));
-				subProcesses[field.id] = subProcess;
-
-				string_t version = L"1";
-				subProcess->write({ExecMsg::VERSION_SUPPORTED, version});
-				subProcess->write({ExecMsg::WAITING_FOR_VERSION});
-				SubProcess::Message versionMessage = subProcess->read();
-				if (versionMessage.code == ExecMsg::VERSION_ACCEPTED && versionMessage.parameters[0] == version) {
-					subProcess->write({ExecMsg::RELATION_START});
-					subProcess->write({ExecMsg::INPUT_ATTRIBUTE_METADATA, L"path", L"string"});
-					for (string_t alias : field.getAliases()) subProcess->write({ExecMsg::OUTPUT_ATTRIBUTE_ALIAS, alias});
-					for (int i = 0; i < field.options.size();) subProcess->write({ExecMsg::OPTION, field.options[i++], field.options[i++]});
-					subProcess->write({ExecMsg::WAITING_FOR_OUTPUT_ATTRIBUTES_METADATA});
-
-					vector<AttributeMetadata> metadata;
-					while (true) {
-						SubProcess::Message m = subProcess->read();
-						if (m.code == ExecMsg::OUTPUT_ATTRIBUTE_METADATA) metadata.push_back({m.parameters[0], writer->toTypeId(m.parameters[1])});
-						else if (m.code == ExecMsg::WAITING_FOR_INPUT_ATTRIBUTES) break;
-					}
-
-					cachedMetadata[field.id] = metadata;
-					return metadata;
-				} else {
-					throw RelpipeWriterException(L"Incompatible exec sub-process version or message: " + versionMessage.toString());
-				}
-			}
-		} else {
-			return {};
-		}
-	}
-
-	virtual ~ExecAttributeFinder() override {
-		for (auto s : subProcesses) {
-			try {
-				s.second->write({ExecMsg::RELATION_END});
-				s.second->wait();
-			} catch (...) {
-				std::wcerr << L"Exception caught during closing sub-process #" + std::to_wstring(s.first) + L" and waiting for its end." << std::endl;
-			}
-		}
-	}
-};
-
-const relpipe::writer::string_t ExecAttributeFinder::SCRIPT_PREFIX = L"__relpipe_in_filesystem_script_";
-
-}
-}
-}
diff -r 56409232e1a1 -r c64e1588f428 src/ExecMsg.h
--- a/src/ExecMsg.h	Sat Jan 11 00:58:35 2020 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,86 +0,0 @@
-// This file was generated from the specification.
-
-#include <map>
-#include <string>
-
-namespace relpipe {
-namespace in {
-namespace filesystem {
-
-class ExecMsg {
-public:
-
-	static const int VERSION_SUPPORTED;
-	static const int WAITING_FOR_VERSION;
-	static const int VERSION_ACCEPTED;
-	static const int RELATION_START;
-	static const int INPUT_ATTRIBUTE_METADATA;
-	static const int OUTPUT_ATTRIBUTE_ALIAS;
-	static const int OPTION;
-	static const int COMPLETION_REQUEST;
-	static const int COMPLETION;
-	static const int COMPLETION_END;
-	static const int WAITING_FOR_OUTPUT_ATTRIBUTES_METADATA;
-	static const int OUTPUT_ATTRIBUTE_METADATA;
-	static const int WAITING_FOR_INPUT_ATTRIBUTES;
-	static const int INPUT_ATTRIBUTE;
-	static const int WAITING_FOR_OUTPUT_ATTRIBUTES;
-	static const int OUTPUT_ATTRIBUTE;
-	static const int EXECUTOR_ERROR;
-	static const int PROCESS_ERROR;
-	static const int PROCESS_WARNING;
-	static const int RELATION_END;
-
-	static std::map<int, std::wstring> getMessageNames() {
-		std::map<int, std::wstring> m;
-
-		m[VERSION_SUPPORTED] = L"VERSION_SUPPORTED";
-		m[WAITING_FOR_VERSION] = L"WAITING_FOR_VERSION";
-		m[VERSION_ACCEPTED] = L"VERSION_ACCEPTED";
-		m[RELATION_START] = L"RELATION_START";
-		m[INPUT_ATTRIBUTE_METADATA] = L"INPUT_ATTRIBUTE_METADATA";
-		m[OUTPUT_ATTRIBUTE_ALIAS] = L"OUTPUT_ATTRIBUTE_ALIAS";
-		m[OPTION] = L"OPTION";
-		m[COMPLETION_REQUEST] = L"COMPLETION_REQUEST";
-		m[COMPLETION] = L"COMPLETION";
-		m[COMPLETION_END] = L"COMPLETION_END";
-		m[WAITING_FOR_OUTPUT_ATTRIBUTES_METADATA] = L"WAITING_FOR_OUTPUT_ATTRIBUTES_METADATA";
-		m[OUTPUT_ATTRIBUTE_METADATA] = L"OUTPUT_ATTRIBUTE_METADATA";
-		m[WAITING_FOR_INPUT_ATTRIBUTES] = L"WAITING_FOR_INPUT_ATTRIBUTES";
-		m[INPUT_ATTRIBUTE] = L"INPUT_ATTRIBUTE";
-		m[WAITING_FOR_OUTPUT_ATTRIBUTES] = L"WAITING_FOR_OUTPUT_ATTRIBUTES";
-		m[OUTPUT_ATTRIBUTE] = L"OUTPUT_ATTRIBUTE";
-		m[EXECUTOR_ERROR] = L"EXECUTOR_ERROR";
-		m[PROCESS_ERROR] = L"PROCESS_ERROR";
-		m[PROCESS_WARNING] = L"PROCESS_WARNING";
-		m[RELATION_END] = L"RELATION_END";
-
-		return m;
-	}
-
-};
-
-const int ExecMsg::VERSION_SUPPORTED = 100;
-const int ExecMsg::WAITING_FOR_VERSION = 101;
-const int ExecMsg::VERSION_ACCEPTED = 102;
-const int ExecMsg::RELATION_START = 103;
-const int ExecMsg::INPUT_ATTRIBUTE_METADATA = 104;
-const int ExecMsg::OUTPUT_ATTRIBUTE_ALIAS = 105;
-const int ExecMsg::OPTION = 106;
-const int ExecMsg::COMPLETION_REQUEST = 107;
-const int ExecMsg::COMPLETION = 108;
-const int ExecMsg::COMPLETION_END = 109;
-const int ExecMsg::WAITING_FOR_OUTPUT_ATTRIBUTES_METADATA = 110;
-const int ExecMsg::OUTPUT_ATTRIBUTE_METADATA = 111;
-const int ExecMsg::WAITING_FOR_INPUT_ATTRIBUTES = 112;
-const int ExecMsg::INPUT_ATTRIBUTE = 113;
-const int ExecMsg::WAITING_FOR_OUTPUT_ATTRIBUTES = 114;
-const int ExecMsg::OUTPUT_ATTRIBUTE = 115;
-const int ExecMsg::EXECUTOR_ERROR = 116;
-const int ExecMsg::PROCESS_ERROR = 117;
-const int ExecMsg::PROCESS_WARNING = 118;
-const int ExecMsg::RELATION_END = 120;
-
-}
-}
-}
diff -r 56409232e1a1 -r c64e1588f428 src/FilesystemCommand.h
--- a/src/FilesystemCommand.h	Sat Jan 11 00:58:35 2020 +0100
+++ b/src/FilesystemCommand.h	Sat Jan 11 18:13:30 2020 +0100
@@ -37,7 +37,7 @@
 #include "AttributeFinder.h"
 #include "FileAttributeFinder.h"
 #include "XattrAttributeFinder.h"
-#include "ExecAttributeFinder.h"
+#include "StreamletAttributeFinder.h"
 
 namespace relpipe {
 namespace in {
@@ -51,12 +51,12 @@
 	std::wstring_convert<codecvt_utf8<wchar_t>> convertor; // TODO: support also other encodings.
 
 	FileAttributeFinder fileAttributeFinder;
-	ExecAttributeFinder execAttributeFinder;
+	StreamletAttributeFinder execAttributeFinder;
 	XattrAttributeFinder xattrAttributeFinder;
 
 	std::map<string_t, AttributeFinder*> attributeFinders{
 		{RequestedField::GROUP_FILE, &fileAttributeFinder},
-		{RequestedField::GROUP_EXEC, &execAttributeFinder},
+		{RequestedField::GROUP_STREAMLET, &execAttributeFinder},
 		{RequestedField::GROUP_XATTR, &xattrAttributeFinder}};
 
 	void reset(std::stringstream& stream) {
diff -r 56409232e1a1 -r c64e1588f428 src/RequestedField.h
--- a/src/RequestedField.h	Sat Jan 11 00:58:35 2020 +0100
+++ b/src/RequestedField.h	Sat Jan 11 18:13:30 2020 +0100
@@ -30,7 +30,7 @@
 public:
 	static const string_t GROUP_FILE;
 	static const string_t GROUP_XATTR;
-	static const string_t GROUP_EXEC;
+	static const string_t GROUP_STREAMLET;
 	integer_t id;
 	string_t group;
 	string_t name;
@@ -58,7 +58,7 @@
 
 const string_t RequestedField::GROUP_FILE = L"file";
 const string_t RequestedField::GROUP_XATTR = L"xattr";
-const string_t RequestedField::GROUP_EXEC = L"exec";
+const string_t RequestedField::GROUP_STREAMLET = L"streamlet";
 
 }
 }
diff -r 56409232e1a1 -r c64e1588f428 src/StreamletAttributeFinder.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/StreamletAttributeFinder.h	Sat Jan 11 18:13:30 2020 +0100
@@ -0,0 +1,139 @@
+/**
+ * Relational pipes
+ * Copyright © 2019 František Kučera (Frantovo.cz, GlobalCode.info)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include <vector>
+#include <filesystem>
+#include <regex>
+#include <memory>
+
+#include <relpipe/writer/typedefs.h>
+#include <relpipe/writer/AttributeMetadata.h>
+#include <relpipe/writer/RelationalWriter.h>
+
+#include "RequestedField.h"
+#include "SubProcess.h"
+#include "AttributeFinder.h"
+#include "StreamletMsg.h"
+
+namespace relpipe {
+namespace in {
+namespace filesystem {
+
+namespace fs = std::filesystem;
+using namespace relpipe::writer;
+
+class StreamletAttributeFinder : public AttributeFinder {
+private:
+	std::wstring_convert<codecvt_utf8<wchar_t>> convertor; // TODO: support also other encodings.
+	std::map<int, std::shared_ptr<SubProcess>> subProcesses;
+	std::map<int, std::vector<AttributeMetadata>> cachedMetadata;
+
+	string_t getExecCommand(const RequestedField& field) {
+		// TODO: move to another directory, exec, not script + use custom $PATH with no prefix
+		return SCRIPT_PREFIX + field.name;
+	}
+
+protected:
+
+	virtual void writeFieldOfExistingFile(RelationalWriter* writer, const RequestedField& field) override {
+		// TODO: paralelize also over records → fork multiple processes and distribute records across them; then collect results (with a lock)
+		if (field.group == RequestedField::GROUP_STREAMLET) {
+
+			subProcesses[field.id]->write({StreamletMsg::INPUT_ATTRIBUTE, L"0", convertor.from_bytes(currentFileRaw), L"false"}); // index, value, isNull
+			subProcesses[field.id]->write({StreamletMsg::WAITING_FOR_OUTPUT_ATTRIBUTES});
+
+			for (auto metadata : cachedMetadata[field.id]) {
+				SubProcess::Message m = subProcesses[field.id]->read();
+				if (m.code == StreamletMsg::OUTPUT_ATTRIBUTE) writer->writeAttribute(m.parameters[0]);
+				else throw RelpipeWriterException(L"Protocol violation from exec sub-process while reading: „" + metadata.attributeName + L"“. Expected OUTPUT_ATTRIBUTE but got: " + m.toString());
+			}
+
+			SubProcess::Message m = subProcesses[field.id]->read();
+			if (m.code != StreamletMsg::WAITING_FOR_INPUT_ATTRIBUTES) throw RelpipeWriterException(L"Protocol violation from exec sub-process. Expected WAITING_FOR_INPUT_ATTRIBUTES but got: " + m.toString());
+			// TODO: generic protocol violation error messages / method for checking responses
+		}
+	}
+
+public:
+
+	static const string_t SCRIPT_PREFIX;
+
+	virtual vector<AttributeMetadata> toMetadata(RelationalWriter* writer, const RequestedField& field) override {
+		if (field.group == RequestedField::GROUP_STREAMLET) {
+
+			if (cachedMetadata.count(field.id)) {
+				return cachedMetadata[field.id];
+			} else {
+
+				std::vector<string_t> commandLine = {getExecCommand(field)};
+				std::map<string_t, string_t> environment;
+
+				for (auto mn : StreamletMsg::getMessageNames()) {
+					environment[L"EXEC_MSG_" + mn.second] = std::to_wstring(mn.first);
+					environment[L"EXEC_MSG_" + std::to_wstring(mn.first)] = mn.second;
+				}
+
+				shared_ptr<SubProcess> subProcess(SubProcess::create(commandLine, environment));
+				subProcesses[field.id] = subProcess;
+
+				string_t version = L"1";
+				subProcess->write({StreamletMsg::VERSION_SUPPORTED, version});
+				subProcess->write({StreamletMsg::WAITING_FOR_VERSION});
+				SubProcess::Message versionMessage = subProcess->read();
+				if (versionMessage.code == StreamletMsg::VERSION_ACCEPTED && versionMessage.parameters[0] == version) {
+					subProcess->write({StreamletMsg::RELATION_START});
+					subProcess->write({StreamletMsg::INPUT_ATTRIBUTE_METADATA, L"path", L"string"});
+					for (string_t alias : field.getAliases()) subProcess->write({StreamletMsg::OUTPUT_ATTRIBUTE_ALIAS, alias});
+					for (int i = 0; i < field.options.size();) subProcess->write({StreamletMsg::OPTION, field.options[i++], field.options[i++]});
+					subProcess->write({StreamletMsg::WAITING_FOR_OUTPUT_ATTRIBUTES_METADATA});
+
+					vector<AttributeMetadata> metadata;
+					while (true) {
+						SubProcess::Message m = subProcess->read();
+						if (m.code == StreamletMsg::OUTPUT_ATTRIBUTE_METADATA) metadata.push_back({m.parameters[0], writer->toTypeId(m.parameters[1])});
+						else if (m.code == StreamletMsg::WAITING_FOR_INPUT_ATTRIBUTES) break;
+					}
+
+					cachedMetadata[field.id] = metadata;
+					return metadata;
+				} else {
+					throw RelpipeWriterException(L"Incompatible exec sub-process version or message: " + versionMessage.toString());
+				}
+			}
+		} else {
+			return {};
+		}
+	}
+
+	virtual ~StreamletAttributeFinder() override {
+		for (auto s : subProcesses) {
+			try {
+				s.second->write({StreamletMsg::RELATION_END});
+				s.second->wait();
+			} catch (...) {
+				std::wcerr << L"Exception caught during closing sub-process #" + std::to_wstring(s.first) + L" and waiting for its end." << std::endl;
+			}
+		}
+	}
+};
+
+const relpipe::writer::string_t StreamletAttributeFinder::SCRIPT_PREFIX = L"__relpipe_in_filesystem_script_";
+
+}
+}
+}
diff -r 56409232e1a1 -r c64e1588f428 src/StreamletMsg.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/StreamletMsg.h	Sat Jan 11 18:13:30 2020 +0100
@@ -0,0 +1,88 @@
+// This file was generated from the specification.
+
+#pragma once
+
+#include <map>
+#include <string>
+
+namespace relpipe {
+namespace in {
+namespace filesystem {
+
+class StreamletMsg {
+public:
+
+	static const int VERSION_SUPPORTED;
+	static const int WAITING_FOR_VERSION;
+	static const int VERSION_ACCEPTED;
+	static const int RELATION_START;
+	static const int INPUT_ATTRIBUTE_METADATA;
+	static const int OUTPUT_ATTRIBUTE_ALIAS;
+	static const int OPTION;
+	static const int COMPLETION_REQUEST;
+	static const int COMPLETION;
+	static const int COMPLETION_END;
+	static const int WAITING_FOR_OUTPUT_ATTRIBUTES_METADATA;
+	static const int OUTPUT_ATTRIBUTE_METADATA;
+	static const int WAITING_FOR_INPUT_ATTRIBUTES;
+	static const int INPUT_ATTRIBUTE;
+	static const int WAITING_FOR_OUTPUT_ATTRIBUTES;
+	static const int OUTPUT_ATTRIBUTE;
+	static const int EXECUTOR_ERROR;
+	static const int STREAMLET_ERROR;
+	static const int STREAMLET_WARNING;
+	static const int RELATION_END;
+
+	static std::map<int, std::wstring> getMessageNames() {
+		std::map<int, std::wstring> m;
+
+		m[VERSION_SUPPORTED] = L"VERSION_SUPPORTED";
+		m[WAITING_FOR_VERSION] = L"WAITING_FOR_VERSION";
+		m[VERSION_ACCEPTED] = L"VERSION_ACCEPTED";
+		m[RELATION_START] = L"RELATION_START";
+		m[INPUT_ATTRIBUTE_METADATA] = L"INPUT_ATTRIBUTE_METADATA";
+		m[OUTPUT_ATTRIBUTE_ALIAS] = L"OUTPUT_ATTRIBUTE_ALIAS";
+		m[OPTION] = L"OPTION";
+		m[COMPLETION_REQUEST] = L"COMPLETION_REQUEST";
+		m[COMPLETION] = L"COMPLETION";
+		m[COMPLETION_END] = L"COMPLETION_END";
+		m[WAITING_FOR_OUTPUT_ATTRIBUTES_METADATA] = L"WAITING_FOR_OUTPUT_ATTRIBUTES_METADATA";
+		m[OUTPUT_ATTRIBUTE_METADATA] = L"OUTPUT_ATTRIBUTE_METADATA";
+		m[WAITING_FOR_INPUT_ATTRIBUTES] = L"WAITING_FOR_INPUT_ATTRIBUTES";
+		m[INPUT_ATTRIBUTE] = L"INPUT_ATTRIBUTE";
+		m[WAITING_FOR_OUTPUT_ATTRIBUTES] = L"WAITING_FOR_OUTPUT_ATTRIBUTES";
+		m[OUTPUT_ATTRIBUTE] = L"OUTPUT_ATTRIBUTE";
+		m[EXECUTOR_ERROR] = L"EXECUTOR_ERROR";
+		m[STREAMLET_ERROR] = L"STREAMLET_ERROR";
+		m[STREAMLET_WARNING] = L"STREAMLET_WARNING";
+		m[RELATION_END] = L"RELATION_END";
+
+		return m;
+	}
+
+};
+
+const int StreamletMsg::VERSION_SUPPORTED = 100;
+const int StreamletMsg::WAITING_FOR_VERSION = 101;
+const int StreamletMsg::VERSION_ACCEPTED = 102;
+const int StreamletMsg::RELATION_START = 103;
+const int StreamletMsg::INPUT_ATTRIBUTE_METADATA = 104;
+const int StreamletMsg::OUTPUT_ATTRIBUTE_ALIAS = 105;
+const int StreamletMsg::OPTION = 106;
+const int StreamletMsg::COMPLETION_REQUEST = 107;
+const int StreamletMsg::COMPLETION = 108;
+const int StreamletMsg::COMPLETION_END = 109;
+const int StreamletMsg::WAITING_FOR_OUTPUT_ATTRIBUTES_METADATA = 110;
+const int StreamletMsg::OUTPUT_ATTRIBUTE_METADATA = 111;
+const int StreamletMsg::WAITING_FOR_INPUT_ATTRIBUTES = 112;
+const int StreamletMsg::INPUT_ATTRIBUTE = 113;
+const int StreamletMsg::WAITING_FOR_OUTPUT_ATTRIBUTES = 114;
+const int StreamletMsg::OUTPUT_ATTRIBUTE = 115;
+const int StreamletMsg::EXECUTOR_ERROR = 116;
+const int StreamletMsg::STREAMLET_ERROR = 117;
+const int StreamletMsg::STREAMLET_WARNING = 118;
+const int StreamletMsg::RELATION_END = 120;
+
+}
+}
+}