relpipe/relpipe-lib-writer.cpp: src/StringDataTypeWriter.h@03750aff8619 (annotated)

7 01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	1	#pragma once
01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	2
01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	3	#include <string>
01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	4	#include <sstream>
01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	5	#include <iostream>
01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	6	#include <vector>
01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	7	#include <locale>
01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	8	#include <codecvt>
01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	9
8 03750aff8619 writer only writes + refactoring František Kučera <franta-hg@frantovo.cz> parents: 7 diff changeset	10	#include "../include/DataTypeWriter.h"
03750aff8619 writer only writes + refactoring František Kučera <franta-hg@frantovo.cz> parents: 7 diff changeset	11	#include "format.h"
7 01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	12
8 03750aff8619 writer only writes + refactoring František Kučera <franta-hg@frantovo.cz> parents: 7 diff changeset	13	namespace relpipe {
03750aff8619 writer only writes + refactoring František Kučera <franta-hg@frantovo.cz> parents: 7 diff changeset	14	namespace writer {
7 01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	15
01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	16	/**
01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	17	* The prototype does not recognize any encoding,
01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	18	* it just works with c++ strings in encoding default to given platform.
01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	19	* In the real implementation of relational pipes, there will be DataTypes for particular encodings.
01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	20	*/
8 03750aff8619 writer only writes + refactoring František Kučera <franta-hg@frantovo.cz> parents: 7 diff changeset	21	class StringDataTypeWriter : public DataTypeWriter<string_t> {
7 01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	22	private:
8 03750aff8619 writer only writes + refactoring František Kučera <franta-hg@frantovo.cz> parents: 7 diff changeset	23	IntegerDataTypeWriter integerType;
03750aff8619 writer only writes + refactoring František Kučera <franta-hg@frantovo.cz> parents: 7 diff changeset	24	std::wstring_convert<std::codecvt_utf8<wchar_t>> convertor; // TODO: support also other encodings.
7 01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	25	public:
01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	26
8 03750aff8619 writer only writes + refactoring František Kučera <franta-hg@frantovo.cz> parents: 7 diff changeset	27	StringDataTypeWriter() : DataTypeWriter<string_t>(DATA_TYPE_ID_STRING, DATA_TYPE_CODE_STRING) {
7 01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	28	}
01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	29
8 03750aff8619 writer only writes + refactoring František Kučera <franta-hg@frantovo.cz> parents: 7 diff changeset	30	void writeValue(std::ostream &output, const string_t &value) override {
03750aff8619 writer only writes + refactoring František Kučera <franta-hg@frantovo.cz> parents: 7 diff changeset	31	std::string s = convertor.to_bytes(value);
7 01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	32	integerType.writeValue(output, s.length());
01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	33	output << s.c_str();
01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	34	}
01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	35
8 03750aff8619 writer only writes + refactoring František Kučera <franta-hg@frantovo.cz> parents: 7 diff changeset	36	wstring toValue(const string_t &stringValue) override {
7 01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	37	return stringValue;
01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	38	}
01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	39
01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	40	};
01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	41
8 03750aff8619 writer only writes + refactoring František Kučera <franta-hg@frantovo.cz> parents: 7 diff changeset	42	}
7 01dd90eeedbb add data type and catalog classes from the prototype František Kučera <franta-hg@frantovo.cz> parents: diff changeset	43	}

author	František Kučera <franta-hg@frantovo.cz>
	Sun, 15 Jul 2018 00:45:21 +0200
branch	v_0
changeset 8	03750aff8619
parent 7	src/StringDataType.h@01dd90eeedbb
child 9	0a40752e401d
permissions	-rw-r--r--