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#include <iostream>
#include <fstream>
#include <string>
#include <drizzled/message/table.pb.h>
using namespace std;
using namespace drizzled::message;
/*
Written from Google proto example
*/
void fill_engine(::drizzled::message::Table::StorageEngine *engine)
{
int16_t x;
engine->set_name("InnoDB");
Table::StorageEngine::EngineOption *option;
string option_names[2]= {
"INDEX_DIRECTORY"
, "DATA_DIRECTORY"
};
string option_values[2]= {
"/var/drizzle/indexdir"
, "/var/drizzle/datadir"
};
/* Add some engine options */
for (x= 0; x < 2; x++)
{
option= engine->add_option();
option->set_option_name(option_names[x]);
option->set_option_value(option_values[x]);
option->set_option_type(Table::StorageEngine::EngineOption::STRING);
}
}
void new_index_to_table(::drizzled::message::Table *table,
const string name,
uint16_t num_index_parts,
uint32_t field_indexes[],
uint32_t compare_lengths[],
bool is_primary,
bool is_unique)
{
uint16_t x= 0;
Table::Index *index;
Table::Index::IndexPart *index_part;
index= table->add_indexes();
index->set_name(name);
index->set_type(Table::Index::BTREE);
index->set_is_primary(is_primary);
index->set_is_unique(is_unique);
while (x < num_index_parts)
{
index_part= index->add_index_part();
index_part->set_fieldnr(field_indexes[x]);
if (compare_lengths[x] > 0)
index_part->set_compare_length(compare_lengths[x]);
x++;
}
}
void fill_table(::drizzled::message::Table *table, const char *name)
{
uint16_t x;
Table::Field *field;
Table::Field::FieldConstraints *field_constraints;
Table::Field::StringFieldOptions *string_field_options;
Table::Field::NumericFieldOptions *numeric_field_options;
Table::Field::SetFieldOptions *set_field_options;
table->set_name(name);
table->set_type(Table::STANDARD);
/* Write out some random varchar */
for (x= 0; x < 3; x++)
{
char buffer[1024];
field= table->add_field();
field_constraints= field->mutable_constraints();
string_field_options= field->mutable_string_options();
sprintf(buffer, "sample%u", x);
field->set_name(buffer);
field->set_type(Table::Field::VARCHAR);
field_constraints->set_is_nullable((x % 2));
string_field_options->set_length(rand() % 100);
if (x % 3)
{
string_field_options->set_collation("utf8_swedish_ci");
}
}
/* Write out an INTEGER */
{
field= table->add_field();
field->set_name("number");
field->set_type(Table::Field::INTEGER);
}
/* Write out a ENUM */
{
field= table->add_field();
field->set_type(Table::Field::ENUM);
field->set_name("colors");
set_field_options= field->mutable_set_options();
set_field_options->add_field_value("red");
set_field_options->add_field_value("blue");
set_field_options->add_field_value("green");
set_field_options->set_count_elements(set_field_options->field_value_size());
}
/* Write out a BLOB */
{
field= table->add_field();
field->set_name("some_btye_string");
field->set_type(Table::Field::BLOB);
}
/* Write out a DECIMAL */
{
field= table->add_field();
field->set_name("important_number");
field->set_type(Table::Field::DECIMAL);
field_constraints= field->mutable_constraints();
field_constraints->set_is_nullable(true);
numeric_field_options= field->mutable_numeric_options();
numeric_field_options->set_precision(8);
numeric_field_options->set_scale(3);
}
{
uint32_t fields_in_index[1]= {6};
uint32_t compare_lengths_in_index[1]= {0};
bool is_unique= true;
bool is_primary= false;
/* Add a single-column index on important_number field */
new_index_to_table(table, "idx_important_decimal", 1, fields_in_index, compare_lengths_in_index, is_primary, is_unique);
}
{
/* Add a double-column index on first two varchar fields */
uint32_t fields_in_index[2]= {0,1};
uint32_t compare_lengths_in_index[2]= {20,35};
bool is_unique= true;
bool is_primary= true;
new_index_to_table(table, "idx_varchar1_2", 2, fields_in_index, compare_lengths_in_index, is_primary, is_unique);
}
/* Do engine-specific stuff */
Table::StorageEngine *engine= table->mutable_engine();
fill_engine(engine);
}
int main(int argc, char* argv[])
{
GOOGLE_PROTOBUF_VERIFY_VERSION;
if (argc != 2)
{
cerr << "Usage: " << argv[0] << " SCHEMA" << endl;
return -1;
}
Table table;
fill_table(&table, "example_table");
fstream output(argv[1], ios::out | ios::trunc | ios::binary);
if (!table.SerializeToOstream(&output))
{
cerr << "Failed to write schema." << endl;
return -1;
}
return 0;
}
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