diff -r 01dd90eeedbb -r 03750aff8619 src/StringDataType.h
--- a/src/StringDataType.h	Sat Jul 14 23:24:10 2018 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,61 +0,0 @@
-#pragma once
-
-#include <string>
-#include <sstream>
-#include <iostream>
-#include <vector>
-#include <locale>
-#include <codecvt>
-
-#include "DataType.h"
-#include "RelpipeException.h"
-#include "IntegerDataType.h"
-
-using namespace std;
-
-namespace rp_prototype {
-
-/**
- * The prototype does not recognize any encoding,
- * it just works with c++ strings in encoding default to given platform. 
- * In the real implementation of relational pipes, there will be DataTypes for particular encodings.
- */
-class StringDataType : public DataType<wstring> {
-private:
-	IntegerDataType integerType;
-	wstring_convert<codecvt_utf8<wchar_t>> convertor; // TODO: support also other encodings.
-public:
-
-	StringDataType() : DataType<wstring>(DATA_TYPE_ID_STRING, DATA_TYPE_CODE_STRING) {
-	}
-
-	wstring readValue(istream &input) override {
-		integer_t length = integerType.readValue(input);
-		// TODO: check maximum length of single field
-		// if (length > 4000) throw RelpipeException("data too long", EXIT_CODE_DATA_ERROR);
-		vector<char> buf(length);
-		input.read(buf.data(), length);
-		if (input.good()) {
-			return convertor.from_bytes(string(buf.data(), length));
-		} else {
-			throw RelpipeException(L"Error while reading string from the stream.", EXIT_CODE_DATA_ERROR);
-		}
-	}
-
-	void writeValue(ostream &output, const wstring &value) override {
-		string s = convertor.to_bytes(value);
-		integerType.writeValue(output, s.length());
-		output << s.c_str();
-	}
-
-	wstring toValue(const wstring &stringValue) override {
-		return stringValue;
-	}
-
-	wstring toString(const wstring &value) override {
-		return value;
-	}
-
-};
-
-}
\ No newline at end of file