SchemaMetaData.h

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#pragma once
 
#include <assert.h>
 
#include <unordered_map>
#include <vector>
 
#include "Projection.h"
#include "Table.h"
 
namespace Parser {
using std::unordered_map;
 
class SchemaMetaData {
    vector<Table> tables;
    unordered_map<string, int> table_map;
    vector<Projection> projections;
    unordered_map<string, int> projection_map;
 
   public:
    void add_table(Table table) {
        table_map[table.get_table_name()] = tables.size();
        tables.push_back(table);
    }
    void add_projection(Projection projection) {
        projection_map[projection.get_projection_name()] = projections.size();
        projections.push_back(projection);
    }
    vector<Table> &get_tables() { return tables; }
    Table &get_table(string table_name);
    vector<Projection> &get_projections() { return projections; }
    Projection &get_projection(string projection_name);
 
};
}  // namespace Parser