lbug 0.15.4

An in-process property graph database management system built for query speed and scalability
Documentation 
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#pragma once

#include <memory>
#include <string>
#include <vector>

#include "common/arrow/arrow.h"
#include "main/connection.h"

namespace lbug {

// Result of creating an arrow table view
struct ArrowTableCreationResult {
    std::unique_ptr<main::QueryResult> queryResult;
    std::string arrowId;
};

class ArrowTableSupport {
public:
    // Register Arrow data and return an ID
    static std::string registerArrowData(ArrowSchemaWrapper schema,
        std::vector<ArrowArrayWrapper> arrays);

    // Retrieve Arrow data by ID (returns pointers to data in registry)
    static bool getArrowData(const std::string& id, ArrowSchemaWrapper*& schema,
        std::vector<ArrowArrayWrapper>*& arrays);

    // Unregister Arrow data by ID
    static void unregisterArrowData(const std::string& id);

    // Create a view from Arrow C Data Interface structures
    static ArrowTableCreationResult createViewFromArrowTable(main::Connection& connection,
        const std::string& viewName, ArrowSchemaWrapper schema,
        std::vector<ArrowArrayWrapper> arrays);

    // Create a relationship table from Arrow C Data Interface structures.
    // The Arrow table must contain source/destination endpoint columns.
    static ArrowTableCreationResult createRelTableFromArrowTable(main::Connection& connection,
        const std::string& tableName, const std::string& srcTableName,
        const std::string& dstTableName, ArrowSchemaWrapper schema,
        std::vector<ArrowArrayWrapper> arrays, const std::string& srcColumnName = "from",
        const std::string& dstColumnName = "to");

    // Unregister an arrow table completely (drop table and unregister data)
    static std::unique_ptr<main::QueryResult> unregisterArrowTable(main::Connection& connection,
        const std::string& tableName);
};

} // namespace lbug