/**
* Relational pipes
* Copyright © 2018 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, either version 3 of the License, or
* (at your option) any later version.
*
* 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 <memory>
#include <string>
#include <vector>
#include <iostream>
#include <sstream>
#include <locale>
#include <codecvt>
#include <regex>
#include <relpipe/reader/typedefs.h>
#include <relpipe/reader/TypeId.h>
#include <relpipe/reader/handlers/RelationalReaderStringHandler.h>
#include <relpipe/reader/handlers/AttributeMetadata.h>
#include <relpipe/writer/Factory.h>
namespace relpipe {
namespace tr {
namespace validator {
using namespace relpipe;
using namespace relpipe::reader;
using namespace relpipe::reader::handlers;
// TODO: use rather RelationalReaderStringHadler
class PassthroughHandler : public RelationalReaderStringHadler {
private:
writer::RelationalWriter* relationalWriter;
public:
PassthroughHandler(std::ostream& output) : relationalWriter(writer::Factory::create(output)) {
}
virtual ~PassthroughHandler() {
delete relationalWriter;
}
void startRelation(string_t name, std::vector<AttributeMetadata> attributes) override {
// TODO: move to a reusable method (or use same metadata on both reader and writer side?)
std::vector<writer::AttributeMetadata> writerMetadata;
for (AttributeMetadata readerMetadata : attributes) {
writerMetadata.push_back({readerMetadata.getAttributeName(), relationalWriter->toTypeId(readerMetadata.getTypeName())});
}
relationalWriter->startRelation(name, writerMetadata, true);
}
void attribute(const string_t& value) override {
relationalWriter->writeAttribute(value);
}
void endOfPipe() {
}
};
}
}
}