GeometryCollection::GeometryCollection(SQLite::Column const & blob) :
Buffer<GeometryCollectionType>(gaiaFromSpatiaLiteBlobWkb(
(const unsigned char*)blob.getBlob(),
blob.getBytes()),
gaiaFreeGeomColl)
{
}
int main ()
{
// Basic example (1/6) :
try
{
// Open a database file in readonly mode
SQLite::Database db(filename_example_db3); // SQLITE_OPEN_READONLY
std::cout << "SQLite database file '" << db.getFilename().c_str() << "' opened successfully\n";
// Test if the 'test' table exists
bool bExists = db.tableExists("test");
std::cout << "SQLite table 'test' exists=" << bExists << "\n";
// Get a single value result with an easy to use shortcut
std::string value = db.execAndGet("SELECT value FROM test WHERE id=2");
std::cout << "execAndGet=" << value.c_str() << std::endl;
// Compile a SQL query, containing one parameter (index 1)
SQLite::Statement query(db, "SELECT id as test_id, value as test_val, weight as test_weight FROM test WHERE weight > ?");
std::cout << "SQLite statement '" << query.getQuery().c_str() << "' compiled (" << query.getColumnCount () << " columns in the result)\n";
// Bind the integer value 2 to the first parameter of the SQL query
query.bind(1, 2);
std::cout << "binded with integer value '2' :\n";
// Loop to execute the query step by step, to get one a row of results at a time
while (query.executeStep())
{
// Demonstrate how to get some typed column value (and the equivalent explicit call)
int id = query.getColumn(0); // = query.getColumn(0).getInt()
//const char* pvalue = query.getColumn(1); // = query.getColumn(1).getText()
std::string value2 = query.getColumn(1); // = query.getColumn(1).getText()
int bytes = query.getColumn(1).getBytes();
double weight = query.getColumn(2); // = query.getColumn(2).getInt()
static bool bFirst = true;
if (bFirst)
{
// Show how to get the aliased names of the result columns.
std::string name0 = query.getColumn(0).getName();
std::string name1 = query.getColumn(1).getName();
std::string name2 = query.getColumn(2).getName();
std::cout << "aliased result [\"" << name0.c_str() << "\", \"" << name1.c_str() << "\", \"" << name2.c_str() << "\"]\n";
#ifdef SQLITE_ENABLE_COLUMN_METADATA
// Show how to get origin names of the table columns from which theses result columns come from.
// Requires the SQLITE_ENABLE_COLUMN_METADATA preprocessor macro to be
// also defined at compile times of the SQLite library itself.
name0 = query.getColumn(0).getOriginName();
name1 = query.getColumn(1).getOriginName();
name2 = query.getColumn(2).getOriginName();
std::cout << "origin table 'test' [\"" << name0.c_str() << "\", \"" << name1.c_str() << "\", \"" << name2.c_str() << "\"]\n";
#endif
bFirst = false;
}
std::cout << "row (" << id << ", \"" << value2.c_str() << "\" " << bytes << " bytes, " << weight << ")\n";
}
// Reset the query to use it again
query.reset();
std::cout << "SQLite statement '" << query.getQuery().c_str() << "' reseted (" << query.getColumnCount () << " columns in the result)\n";
// Bind the string value "6" to the first parameter of the SQL query
query.bind(1, "6");
std::cout << "binded with string value \"6\" :\n";
while (query.executeStep())
{
// Demonstrate that inserting column value in a std:ostream is natural
std::cout << "row (" << query.getColumn(0) << ", \"" << query.getColumn(1) << "\", " << query.getColumn(2) << ")\n";
}
}
catch (std::exception& e)
{
std::cout << "SQLite exception: " << e.what() << std::endl;
return EXIT_FAILURE; // unexpected error : exit the example program
}
////////////////////////////////////////////////////////////////////////////
// Object Oriented Basic example (2/6) :
try
{
// Open the database and compile the query
Example example;
// Demonstrate the way to use the same query with different parameter values
example.ListGreaterThan(8);
example.ListGreaterThan(6);
example.ListGreaterThan(2);
}
catch (std::exception& e)
{
std::cout << "SQLite exception: " << e.what() << std::endl;
return EXIT_FAILURE; // unexpected error : exit the example program
}
// The execAndGet wrapper example (3/6) :
try
{
// Open a database file in readonly mode
SQLite::Database db(filename_example_db3); // SQLITE_OPEN_READONLY
std::cout << "SQLite database file '" << db.getFilename().c_str() << "' opened successfully\n";
// WARNING: Be very careful with this dangerous method: you have to
// make a COPY OF THE result, else it will be destroy before the next line
// (when the underlying temporary Statement and Column objects are destroyed)
std::string value = db.execAndGet("SELECT value FROM test WHERE id=2");
std::cout << "execAndGet=" << value.c_str() << std::endl;
}
catch (std::exception& e)
{
std::cout << "SQLite exception: " << e.what() << std::endl;
return EXIT_FAILURE; // unexpected error : exit the example program
}
////////////////////////////////////////////////////////////////////////////
// Simple batch queries example (4/6) :
try
{
// Open a database file in create/write mode
SQLite::Database db("test.db3", SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE);
std::cout << "SQLite database file '" << db.getFilename().c_str() << "' opened successfully\n";
// Create a new table with an explicit "id" column aliasing the underlying rowid
db.exec("DROP TABLE IF EXISTS test");
db.exec("CREATE TABLE test (id INTEGER PRIMARY KEY, value TEXT)");
// first row
int nb = db.exec("INSERT INTO test VALUES (NULL, \"test\")");
std::cout << "INSERT INTO test VALUES (NULL, \"test\")\", returned " << nb << std::endl;
// second row
nb = db.exec("INSERT INTO test VALUES (NULL, \"second\")");
std::cout << "INSERT INTO test VALUES (NULL, \"second\")\", returned " << nb << std::endl;
// update the second row
nb = db.exec("UPDATE test SET value=\"second-updated\" WHERE id='2'");
std::cout << "UPDATE test SET value=\"second-updated\" WHERE id='2', returned " << nb << std::endl;
// Check the results : expect two row of result
SQLite::Statement query(db, "SELECT * FROM test");
std::cout << "SELECT * FROM test :\n";
while (query.executeStep())
{
std::cout << "row (" << query.getColumn(0) << ", \"" << query.getColumn(1) << "\")\n";
}
db.exec("DROP TABLE test");
}
catch (std::exception& e)
{
std::cout << "SQLite exception: " << e.what() << std::endl;
return EXIT_FAILURE; // unexpected error : exit the example program
}
remove("test.db3");
////////////////////////////////////////////////////////////////////////////
// RAII transaction example (5/6) :
try
{
// Open a database file in create/write mode
SQLite::Database db("transaction.db3", SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE);
std::cout << "SQLite database file '" << db.getFilename().c_str() << "' opened successfully\n";
db.exec("DROP TABLE IF EXISTS test");
// Exemple of a successful transaction :
try
{
// Begin transaction
SQLite::Transaction transaction(db);
db.exec("CREATE TABLE test (id INTEGER PRIMARY KEY, value TEXT)");
int nb = db.exec("INSERT INTO test VALUES (NULL, \"test\")");
std::cout << "INSERT INTO test VALUES (NULL, \"test\")\", returned " << nb << std::endl;
// Commit transaction
transaction.commit();
}
catch (std::exception& e)
{
std::cout << "SQLite exception: " << e.what() << std::endl;
return EXIT_FAILURE; // unexpected error : exit the example program
}
// Exemple of a rollbacked transaction :
try
{
// Begin transaction
SQLite::Transaction transaction(db);
int nb = db.exec("INSERT INTO test VALUES (NULL, \"second\")");
std::cout << "INSERT INTO test VALUES (NULL, \"second\")\", returned " << nb << std::endl;
nb = db.exec("INSERT INTO test ObviousError");
std::cout << "INSERT INTO test \"error\", returned " << nb << std::endl;
return EXIT_FAILURE; // unexpected success : exit the example program
// Commit transaction
transaction.commit();
}
catch (std::exception& e)
{
std::cout << "SQLite exception: " << e.what() << std::endl;
// expected error, see above
}
// Check the results (expect only one row of result, as the second one has been rollbacked by the error)
SQLite::Statement query(db, "SELECT * FROM test");
std::cout << "SELECT * FROM test :\n";
while (query.executeStep())
{
std::cout << "row (" << query.getColumn(0) << ", \"" << query.getColumn(1) << "\")\n";
}
}
catch (std::exception& e)
{
std::cout << "SQLite exception: " << e.what() << std::endl;
return EXIT_FAILURE; // unexpected error : exit the example program
}
remove("transaction.db3");
////////////////////////////////////////////////////////////////////////////
// Binary blob and in-memory database example (6/6) :
try
{
// Open a database file in create/write mode
SQLite::Database db(":memory:", SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE);
std::cout << "SQLite database file '" << db.getFilename().c_str() << "' opened successfully\n";
db.exec("DROP TABLE IF EXISTS test");
db.exec("CREATE TABLE test (id INTEGER PRIMARY KEY, value BLOB)");
FILE* fp = fopen(filename_logo_png.c_str(), "rb");
if (NULL != fp)
{
char buffer[16*1024];
void* blob = &buffer;
int size = static_cast<int>(fread(blob, 1, 16*1024, fp));
buffer[size] = '\0';
fclose (fp);
std::cout << "blob size=" << size << " :\n";
// Insert query
SQLite::Statement query(db, "INSERT INTO test VALUES (NULL, ?)");
// Bind the blob value to the first parameter of the SQL query
query.bind(1, blob, size);
std::cout << "blob binded successfully\n";
// Execute the one-step query to insert the blob
int nb = query.exec ();
std::cout << "INSERT INTO test VALUES (NULL, ?)\", returned " << nb << std::endl;
}
else
{
std::cout << "file " << filename_logo_png << " not found !\n";
return EXIT_FAILURE; // unexpected error : exit the example program
}
fp = fopen("out.png", "wb");
if (NULL != fp)
{
const void* blob = NULL;
size_t size;
SQLite::Statement query(db, "SELECT * FROM test");
std::cout << "SELECT * FROM test :\n";
if (query.executeStep())
{
SQLite::Column colBlob = query.getColumn(1);
blob = colBlob.getBlob ();
size = colBlob.getBytes ();
std::cout << "row (" << query.getColumn(0) << ", size=" << size << ")\n";
size_t sizew = fwrite(blob, 1, size, fp);
SQLITECPP_ASSERT(sizew == size, "fwrite failed"); // See SQLITECPP_ENABLE_ASSERT_HANDLER
fclose (fp);
}
}
else
{
std::cout << "file out.png not created !\n";
return EXIT_FAILURE; // unexpected error : exit the example program
}
}
catch (std::exception& e)
{
std::cout << "SQLite exception: " << e.what() << std::endl;
return EXIT_FAILURE; // unexpected error : exit the example program
}
remove("out.png");
std::cout << "everything ok, quitting\n";
return EXIT_SUCCESS;
}
TEST(Column, basis) {
// Create a new database
SQLite::Database db(":memory:", SQLite::OPEN_READWRITE|SQLite::OPEN_CREATE);
EXPECT_EQ(SQLite::OK, db.getErrorCode());
EXPECT_EQ(SQLite::OK, db.getExtendedErrorCode());
// Create a new table
EXPECT_EQ(0, db.exec("CREATE TABLE test (id INTEGER PRIMARY KEY, msg TEXT, int INTEGER, double REAL, binary BLOB, empty TEXT)"));
EXPECT_TRUE(db.tableExists("test"));
EXPECT_TRUE(db.tableExists(std::string("test")));
EXPECT_EQ(0, db.getLastInsertRowid());
// Create a first row (autoid: 1) with all kind of data and a null value
SQLite::Statement insert(db, "INSERT INTO test VALUES (NULL, \"first\", -123, 0.123, ?, NULL)");
// Bind the blob value to the first parameter of the SQL query
const char buffer[] = {'b', 'l', '\0', 'b'}; // "bl\0b" : 4 char, with a null byte inside
const int size = sizeof(buffer); // size = 4
const void* blob = &buffer;
insert.bind(1, blob, size);
// Execute the one-step query to insert the row
EXPECT_EQ(1, insert.exec());
EXPECT_EQ(1, db.getLastInsertRowid());
EXPECT_EQ(1, db.getTotalChanges());
EXPECT_THROW(insert.exec(), SQLite::Exception); // exec() shall throw as it needs to be reseted
// Compile a SQL query
SQLite::Statement query(db, "SELECT * FROM test");
EXPECT_STREQ("SELECT * FROM test", query.getQuery().c_str());
EXPECT_EQ(6, query.getColumnCount ());
query.executeStep();
EXPECT_TRUE (query.hasRow());
EXPECT_FALSE(query.isDone());
// validates every variant of cast operators, and conversions of types
{
const sqlite3_int64 id1 = query.getColumn(0); // operator int64_t()
const int64_t id2 = query.getColumn(0); // operator int64_t()
const long long id3 = query.getColumn(0); // operator int64_t()
const long id4 = query.getColumn(0); // operator int64_t() or long() depending on compiler/architecture
const unsigned int uint1 = query.getColumn(0); // operator uint32_t()
const uint32_t uint2 = query.getColumn(0); // operator uint32_t()
const char* ptxt = query.getColumn(1); // operator const char*()
const std::string msg = query.getColumn(1); // operator std::string() (or const char* with MSVC)
const int integer = query.getColumn(2); // operator int()
const double real = query.getColumn(3); // operator double()
const void* pblob = query.getColumn(4); // operator void*()
const std::string sblob = query.getColumn(4); // operator std::string() (or const char* with MSVC)
const void* pempty = query.getColumn(5); // operator void*()
EXPECT_EQ(1, id1);
EXPECT_EQ(1, id2);
EXPECT_EQ(1, id3);
EXPECT_EQ(1, id4);
EXPECT_EQ(1U, uint1);
EXPECT_EQ(1U, uint2);
EXPECT_STREQ("first", ptxt);
EXPECT_EQ("first", msg);
EXPECT_EQ(-123, integer);
EXPECT_EQ(0.123, real);
EXPECT_EQ(0, memcmp("bl\0b", pblob, size));
EXPECT_EQ((size_t)size, sblob.size());
EXPECT_EQ(0, memcmp("bl\0b", &sblob[0], size));
EXPECT_EQ(NULL, pempty);
}
// validates every variant of explicit getters
{
int64_t id = query.getColumn(0).getInt64();
const unsigned int uint1 = query.getColumn(0).getUInt();
const uint32_t uint2 = query.getColumn(0).getUInt();
const char* ptxt = query.getColumn(1).getText();
const std::string msg1 = query.getColumn(1).getText();
const std::string msg2 = query.getColumn(1).getString();
const int integer = query.getColumn(2).getInt();
const double real = query.getColumn(3).getDouble();
const void* pblob = query.getColumn(4).getBlob();
const std::string sblob = query.getColumn(4).getString();
EXPECT_EQ(1, id);
EXPECT_EQ(1U, uint1);
EXPECT_EQ(1U, uint2);
EXPECT_STREQ("first", ptxt);
EXPECT_EQ("first", msg1);
EXPECT_EQ("first", msg2);
EXPECT_EQ(-123, integer);
EXPECT_EQ(0.123, real);
EXPECT_EQ(0, memcmp("bl\0b", pblob, 4));
EXPECT_EQ(0, memcmp("bl\0b", &sblob[0], 4));
}
// Validate getBytes(), getType(), isInteger(), isNull()...
EXPECT_EQ(SQLite::INTEGER, query.getColumn(0).getType());
EXPECT_EQ(true, query.getColumn(0).isInteger());
EXPECT_EQ(false, query.getColumn(0).isFloat());
EXPECT_EQ(false, query.getColumn(0).isText());
EXPECT_EQ(false, query.getColumn(0).isBlob());
EXPECT_EQ(false, query.getColumn(0).isNull());
EXPECT_STREQ("1", query.getColumn(0).getText()); // convert to string
EXPECT_EQ(1, query.getColumn(0).getBytes()); // size of the string "1" without the null terminator
EXPECT_EQ(SQLite::TEXT, query.getColumn(1).getType());
EXPECT_EQ(false, query.getColumn(1).isInteger());
EXPECT_EQ(false, query.getColumn(1).isFloat());
EXPECT_EQ(true, query.getColumn(1).isText());
EXPECT_EQ(false, query.getColumn(1).isBlob());
EXPECT_EQ(false, query.getColumn(1).isNull());
EXPECT_STREQ("first", query.getColumn(1).getText()); // convert to string
EXPECT_EQ(5, query.getColumn(1).getBytes()); // size of the string "first"
EXPECT_EQ(SQLite::INTEGER, query.getColumn(2).getType());
EXPECT_EQ(true, query.getColumn(2).isInteger());
EXPECT_EQ(false, query.getColumn(2).isFloat());
EXPECT_EQ(false, query.getColumn(2).isText());
EXPECT_EQ(false, query.getColumn(2).isBlob());
EXPECT_EQ(false, query.getColumn(2).isNull());
EXPECT_STREQ("-123", query.getColumn(2).getText()); // convert to string
EXPECT_EQ(4, query.getColumn(2).getBytes()); // size of the string "-123"
EXPECT_EQ(SQLite::FLOAT, query.getColumn(3).getType());
EXPECT_EQ(false, query.getColumn(3).isInteger());
EXPECT_EQ(true, query.getColumn(3).isFloat());
EXPECT_EQ(false, query.getColumn(3).isText());
EXPECT_EQ(false, query.getColumn(3).isBlob());
EXPECT_EQ(false, query.getColumn(3).isNull());
EXPECT_STREQ("0.123", query.getColumn(3).getText()); // convert to string
EXPECT_EQ(5, query.getColumn(3).getBytes()); // size of the string "0.123"
EXPECT_EQ(SQLite::BLOB, query.getColumn(4).getType());
EXPECT_EQ(false, query.getColumn(4).isInteger());
EXPECT_EQ(false, query.getColumn(4).isFloat());
EXPECT_EQ(false, query.getColumn(4).isText());
EXPECT_EQ(true, query.getColumn(4).isBlob());
EXPECT_EQ(false, query.getColumn(4).isNull());
EXPECT_STREQ("bl\0b", query.getColumn(4).getText()); // convert to string
EXPECT_EQ(4, query.getColumn(4).getBytes()); // size of the blob "bl\0b" with the null char
EXPECT_EQ(SQLite::Null, query.getColumn(5).getType());
EXPECT_EQ(false, query.getColumn(5).isInteger());
EXPECT_EQ(false, query.getColumn(5).isFloat());
EXPECT_EQ(false, query.getColumn(5).isText());
EXPECT_EQ(false, query.getColumn(5).isBlob());
EXPECT_EQ(true, query.getColumn(5).isNull());
EXPECT_STREQ("", query.getColumn(5).getText()); // convert to string
EXPECT_EQ(0, query.getColumn(5).getBytes()); // size of the string "" without the null terminator
// Use intermediate Column objects (this is not the recommended way to use the API)
{
const SQLite::Column id = query.getColumn(0);
EXPECT_EQ(1, id.getInt64());
const SQLite::Column msg = query.getColumn(1);
EXPECT_EQ("first", msg.getString());
const SQLite::Column integer = query.getColumn(2);
EXPECT_EQ(-123, integer.getInt());
const SQLite::Column dbl = query.getColumn(3);
EXPECT_EQ(0.123, dbl.getDouble());
}
}
