/* * Reads values form the database and stores the features in in, the targets (mapped according to the set policy) in targets as one-of-n coding */ size_t Trainer::readDatabase(Array<double>& in, Array<double>& target) throw(Kompex::SQLiteException) { // if no query has been set, use default query if(query.size() == 0) genDefaultQuery(); // read the maximum of the column in measurement for which to train double max = 0.0, min = 0.0; if(genOut != GenNNoutput::ML_KEEP_INT && genOut != GenNNoutput::ML_FUZZY_VECTOR) max = getMaximum(trainForName), min = getMinimum(trainForName); Kompex::SQLiteStatement *localStmt = new Kompex::SQLiteStatement(pDatabase); unsigned int nClasses = model.getOutputDimension(); localStmt->Sql(query); size_t nRows = localStmt->GetNumberOfRows(); in = Array<double>(nRows, nFeatures()); LOG(INFO) << "Queried Rows: " << nRows << ", Number of features: " << staticFeatures.size() << " + " << dynamicFeatures.size() << " + " << pcaFeatures.size() << std::endl; if(nRows == 0) throw MachineLearningException("No dataset for the requested features could be found"); std::list<std::pair<double, size_t> > measurements; Array<double> oneOfN(nClasses); for(Array<double>::iterator I = oneOfN.begin(); I != oneOfN.end() && model.usesOneOfNCoding(); ++I) { *I = NEG; } //Train machine size_t i = 0; // fetch all results while(localStmt->FetchRow()){ // std::cout << "Result: " << localStmt->GetColumnName(2) << " " << localStmt->GetColumnName(3) << " " << localStmt->GetColumnName(4) << std::endl; // std::cout << "Data: " << localStmt->GetColumnInt(2) << " " << localStmt->GetColumnInt(3) << " " << localStmt->GetColumnInt(4) << std::endl; //std::cout << "["; // construct training vectors for(size_t j = 0; j < nFeatures(); ++j) { in(i, j) = localStmt->GetColumnDouble(j); //std::cout << in(i, j) << " "; } // translate index to one-of-n coding if(genOut == ML_MAP_TO_N_CLASSES) measurements.push_back(std::make_pair(localStmt->GetColumnDouble(nFeatures()), i)); else appendToTrainArray(target, localStmt, nFeatures(), max, min, oneOfN); //std::cout << target(i) << "]\n"; ++i; } if(genOut == ML_MAP_TO_N_CLASSES) mapToNClasses(measurements, model.getOutputDimension(), NEG, POS, target); // reset the prepared statement localStmt->Reset(); // do not forget to clean-up localStmt->FreeQuery(); delete localStmt; FeaturePreconditioner fp; featureNormalization = fp.normalize(in, -1, 1); return nRows; }
int main() { // uncomment to redirect streams to a file //Kompex::CerrRedirection cerrRedirection("error.log"); //Kompex::CoutRedirection coutRedirection("output.log"); try { // create and open database Kompex::SQLiteDatabase *pDatabase = new Kompex::SQLiteDatabase("test.db", SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, 0); // create statement instance for sql queries/statements Kompex::SQLiteStatement *pStmt = new Kompex::SQLiteStatement(pDatabase); std::cout << "SQLite version: " << pDatabase->GetLibVersionNumber() << std::endl; // --------------------------------------------------------------------------------------------------------- // create table and insert some data pStmt->SqlStatement("CREATE TABLE user (userID INTEGER NOT NULL PRIMARY KEY, lastName VARCHAR(50) NOT NULL, firstName VARCHAR(50), age INTEGER, weight DOUBLE)"); pStmt->SqlStatement("INSERT INTO user (userID, lastName, firstName, age, weight) VALUES (1, 'Lehmann', 'Jamie', 20, 65.5)"); pStmt->SqlStatement("INSERT INTO user (userID, lastName, firstName, age, weight) VALUES (2, 'Burgdorf', 'Peter', 55, NULL)"); pStmt->SqlStatement("INSERT INTO user (userID, lastName, firstName, age, weight) VALUES (3, 'Lehmann', 'Fernando', 18, 70.2)"); pStmt->SqlStatement("INSERT INTO user (userID, lastName, firstName, age, weight) VALUES (4, 'Lehmann', 'Carlene ', 17, 50.8)"); // --------------------------------------------------------------------------------------------------------- // insert some data with Bind..() methods pStmt->Sql("INSERT INTO user (userID, lastName, firstName, age, weight) VALUES(?, ?, ?, ?, ?);"); pStmt->BindInt(1, 5); pStmt->BindString(2, "Murahama"); pStmt->BindString(3, "Yura"); pStmt->BindInt(4, 28); pStmt->BindDouble(5, 60.2); // executes the INSERT statement and cleans-up automatically pStmt->ExecuteAndFree(); // --------------------------------------------------------------------------------------------------------- // lets have a look on a query which is shown in console std::cout << std::endl; pStmt->GetTable("SELECT firstName, userID, age, weight FROM user WHERE lastName = 'Lehmann';", 13); std::cout << std::endl; // some example SQLite aggregate functions std::cout << "COUNT(*): " << pStmt->SqlAggregateFuncResult("SELECT COUNT(*) FROM user WHERE lastName = 'Lehmann';") << std::endl; std::cout << "COUNT(weight): " << pStmt->SqlAggregateFuncResult("SELECT COUNT(weight) FROM user;") << std::endl; std::cout << "MAX(age): " << pStmt->SqlAggregateFuncResult("SELECT MAX(age) FROM user;") << std::endl; std::cout << "MIN(age): " << pStmt->SqlAggregateFuncResult("SELECT MIN(age) FROM user;") << std::endl; std::cout << "AVG(age): " << pStmt->SqlAggregateFuncResult("SELECT AVG(age) FROM user;") << std::endl; std::cout << "SUM(age): " << pStmt->SqlAggregateFuncResult("SELECT SUM(age) FROM user;") << std::endl; std::cout << "TOTAL(age): " << pStmt->SqlAggregateFuncResult("SELECT TOTAL(age) FROM user;") << std::endl; // --------------------------------------------------------------------------------------------------------- // sql query - searching for all people with lastName "Lehmann" pStmt->Sql("SELECT firstName FROM user WHERE lastName = 'Lehmann';"); // after a Sql() call we can get some special information std::cout << "\nGetColumnName: " << pStmt->GetColumnName(0) << std::endl; std::cout << "GetColumnCount: " << pStmt->GetColumnCount() << std::endl; std::cout << "GetColumnDatabaseName: " << pStmt->GetColumnDatabaseName(0) << std::endl; std::cout << "GetColumnTableName: " << pStmt->GetColumnTableName(0) << std::endl; std::cout << "GetColumnOriginName: " << pStmt->GetColumnOriginName(0) << "\n" << std::endl; // do not forget to clean-up pStmt->FreeQuery(); // --------------------------------------------------------------------------------------------------------- // another sql query pStmt->Sql("SELECT * FROM user WHERE firstName = 'Jamie';"); // after a Sql() call we can get some other special information std::cout << "GetColumnName(0): " << pStmt->GetColumnName(0) << std::endl; std::cout << "GetColumnName(1): " << pStmt->GetColumnName(1) << std::endl; std::cout << "GetColumnName(2): " << pStmt->GetColumnName(2) << std::endl; std::cout << "GetColumnName(3): " << pStmt->GetColumnName(3) << std::endl; std::cout << "GetColumnName(4): " << pStmt->GetColumnName(4) << std::endl; std::cout << "GetColumnCount: " << pStmt->GetColumnCount() << std::endl; std::cout << "GetColumnDeclaredDatatype(0): " << pStmt->GetColumnDeclaredDatatype(0) << std::endl; std::cout << "GetColumnDeclaredDatatype(1): " << pStmt->GetColumnDeclaredDatatype(1) << std::endl; std::cout << "GetColumnDeclaredDatatype(2): " << pStmt->GetColumnDeclaredDatatype(2) << std::endl; std::cout << "GetColumnDeclaredDatatype(3): " << pStmt->GetColumnDeclaredDatatype(3) << std::endl; std::cout << "GetColumnDeclaredDatatype(4): " << pStmt->GetColumnDeclaredDatatype(4) << std::endl; // process all results while(pStmt->FetchRow()) { std::cout << "\nGetDataCount: " << pStmt->GetDataCount() << std::endl; std::cout << "SQL query - GetColumnDouble(0): " << pStmt->GetColumnDouble(0) << std::endl; std::cout << "SQL query - GetColumnString(1): " << pStmt->GetColumnString(1) << std::endl; std::cout << "SQL query - GetColumnString(2): " << pStmt->GetColumnString(2) << std::endl; std::cout << "SQL query - GetColumnString(3): " << pStmt->GetColumnString(3) << std::endl; std::cout << "SQL query - GetColumnString(4): " << pStmt->GetColumnString(4) << std::endl; std::cout << "\nColumnTypes (look at the documentation for the meaning of the numbers):\n"; std::cout << "GetColumnType(0): " << pStmt->GetColumnType(0) << std::endl; std::cout << "GetColumnType(1): " << pStmt->GetColumnType(1) << std::endl; std::cout << "GetColumnType(2): " << pStmt->GetColumnType(2) << std::endl; std::cout << "GetColumnType(3): " << pStmt->GetColumnType(3) << std::endl; std::cout << "GetColumnType(4): " << pStmt->GetColumnType(4) << std::endl; } // do not forget to clean-up pStmt->FreeQuery(); // --------------------------------------------------------------------------------------------------------- // a little example how to get some queried data via column name std::cout << "\nGet some queried data via column name:\n"; pStmt->Sql("SELECT * FROM user WHERE lastName = 'Lehmann';"); // process all results while(pStmt->FetchRow()) { std::cout << "firstName: " << pStmt->GetColumnString("firstName") << std::endl; std::cout << "age: " << pStmt->GetColumnInt("age") << std::endl; } // do not forget to clean-up pStmt->FreeQuery(); // --------------------------------------------------------------------------------------------------------- // example for prepared statements - repetitive execution (SELECT) std::cout << "\nPrepared statement - repetitive execution (SELECT):\n"; pStmt->Sql("SELECT * FROM user WHERE userID=@id"); for(int i = 1; i <= 3; ++i) { // bind an integer to the prepared statement pStmt->BindInt(1, i); // and now fetch all results while(pStmt->FetchRow()) std::cout << pStmt->GetColumnCString(0) << " " << pStmt->GetColumnCString(1) << std::endl; // reset the prepared statement pStmt->Reset(); } // do not forget to clean-up pStmt->FreeQuery(); // --------------------------------------------------------------------------------------------------------- // example for prepared statements - repetitive execution (INSERT/UPDATE/DELETE) std::cout << "\nPrepared statement - repetitive execution (INSERT/UPDATE/DELETE):\n"; std::cout << "no output here - there are only some INSERTs ;)\n"; // create a table structure pStmt->SqlStatement("CREATE TABLE flower (flowerID INTEGER NOT NULL PRIMARY KEY, name VARCHAR(50) NOT NULL, size DOUBLE)"); // create the prepared statement pStmt->Sql("INSERT INTO flower (flowerID, name, size) VALUES (@flowerID, @name, @size)"); // bind all three values pStmt->BindInt(1, 1); // flowerID pStmt->BindString(2, "rose"); // name pStmt->BindDouble(3, 50.5); // size // execute the statement and reset the bindings pStmt->Execute(); pStmt->Reset(); // here we go - the second round pStmt->BindInt(1, 2); // flowerID pStmt->BindString(2, "primrose"); // name pStmt->BindDouble(3, 6.21); // size // execute the statement and reset the bindings pStmt->Execute(); pStmt->Reset(); // here we go - the second round pStmt->BindInt(1, 3); // flowerID pStmt->BindString(2, "rhododendron"); // name pStmt->BindDouble(3, 109.84); // size // execute the statement pStmt->Execute(); // we don't need the prepared statement anymore so we clean-up everything pStmt->FreeQuery(); // --------------------------------------------------------------------------------------------------------- // two possibilities to update data in the database // the first way std::cout << "\nUPDATE possibility 1: prepared statement - single execution"; pStmt->Sql("UPDATE user SET lastName=@lastName, age=@age WHERE userID=@userID"); // bind an integer to the prepared statement pStmt->BindString(1, "Urushihara"); // bind lastName pStmt->BindInt(2, 56); // bind age pStmt->BindInt(3, 2); // bind userID // execute it and clean-up pStmt->ExecuteAndFree(); // the second way std::cout << "\nUPDATE possibility 2: common statement\n"; pStmt->SqlStatement("UPDATE user SET weight=51.5, age=18 WHERE firstName='Carlene'"); // --------------------------------------------------------------------------------------------------------- // get some instant results std::cout << "\nSELECT lastName FROM user WHERE userID = 3;\n" << pStmt->GetSqlResultString("SELECT lastName FROM user WHERE userID = 3"); std::cout << "\nSELECT age FROM user WHERE userID = 4;\n" << pStmt->GetSqlResultInt("SELECT age FROM user WHERE userID = 4"); std::cout << "\nSELECT weight FROM user WHERE userID = 3;\n" << pStmt->GetSqlResultDouble("SELECT weight FROM user WHERE userID = 3"); // don't forget to delete the pointer for all GetSqlResult%() methods which return a pointer const unsigned char *lastName = pStmt->GetSqlResultCString("SELECT lastName FROM user WHERE userID = 2"); // do something with lastName delete[] lastName; // --------------------------------------------------------------------------------------------------------- // DELETE statement and get afterwards the number of affected rows pStmt->SqlStatement("DELETE FROM user WHERE lastName = 'Lehmann'"); std::cout << "\n\nGetDatabaseChanges: " << pDatabase->GetDatabaseChanges() << std::endl; // let's see, how many changes we have done std::cout << "GetTotalDatabaseChanges: " << pDatabase->GetTotalDatabaseChanges() << std::endl; std::cout << std::endl; // --------------------------------------------------------------------------------------------------------- // get all metadata from one column pStmt->GetTableColumnMetadata("user", "userID"); std::cout << std::endl; // --------------------------------------------------------------------------------------------------------- // now we want try a transaction // if an error occurs, a rollback is automatically performed // note: you must use Transaction() pStmt->BeginTransaction(); pStmt->Transaction("INSERT INTO user (userID, lastName, firstName, age, weight) VALUES (10, 'Kanzaki', 'Makoto', 23, 76.9)"); FunctionWithLocalVariable(pStmt); pStmt->Transaction("INSERT INTO user (userID, lastName, firstName, age, weight) VALUES (12, 'Kanzaki', 'Peter', 63, 101.1)"); pStmt->CommitTransaction(); // if you want react on errors by yourself, you can use a own try() and catch() block // note: you must use SqlStatement() try { pStmt->BeginTransaction(); pStmt->SqlStatement("INSERT INTO user (userID, lastName, firstName, age, weight) VALUES (10, 'Kanzaki', 'Makoto', 23, 76.9)"); pStmt->SqlStatement("INSERT INTO user (userID, lastName, firstName, age, weight) VALUES (11, 'Kanzaki', 'Yura', 20, 56.9)"); pStmt->SqlStatement("INSERT INTO user (userID, lastName, firstName, age, weight) VALUES (12, 'Kanzaki', 'Peter', 63, 101.1)"); pStmt->SqlStatement("INSERT INTO user (userID, lastName, firstName, age, weight) VALUES (10, 'Henschel', 'Robert', 10, 34.5)"); pStmt->CommitTransaction(); } catch(Kompex::SQLiteException &exception) { std::cerr << "Exception Occured: " << exception.GetString(); std::cerr << "SQLite result code: " << exception.GetSqliteResultCode() << std::endl; pStmt->RollbackTransaction(); std::cerr << "Rollback has been executed!" << std::endl; std::cerr << "This is our own catch() block!" << std::endl; } // --------------------------------------------------------------------------------------------------------- // Kompex::SQLiteBlob example std::cout << "\nKompex::SQLiteBlob example\n"; // create a little table and fill it with some dummy data // the content of the BLOBs is simple plaintext so that you can see what happens pStmt->SqlStatement("CREATE TABLE boarduser (userID INTEGER NOT NULL PRIMARY KEY, username VARCHAR(20), picture BLOB)"); pStmt->SqlStatement("INSERT INTO boarduser (userID, username, picture) VALUES (1, 'apori', 'abcdefghijklmnopqrstuvwxyz')"); pStmt->SqlStatement("INSERT INTO boarduser (userID, username, picture) VALUES (2, 'sarina', 'abcdefghijklmnopqrstuvwxyz')"); // open the existing BLOB for user 'apori' Kompex::SQLiteBlob *pKompexBlob = new Kompex::SQLiteBlob(pDatabase, "main", "boarduser", "picture", 1); // get the size of the current BLOB std::cout << "GetBlobSize(): " << pKompexBlob->GetBlobSize() << std::endl; // read the whole BLOB value int blobSize = pKompexBlob->GetBlobSize(); char *readBuffer = new char[blobSize + 1]; readBuffer[blobSize] = '\0'; pKompexBlob->ReadBlob(readBuffer, blobSize); std::cout << "ReadBlob() output: " << readBuffer << std::endl; // overwrite a part of the BLOB std::cout << "WriteBlob() - change the BLOB data\n"; char newData[8] = "-HELLO-"; pKompexBlob->WriteBlob(newData, sizeof(newData) - 1, 10); // and read the whole BLOB value again pKompexBlob->ReadBlob(readBuffer, blobSize); std::cout << "ReadBlob() output: " << readBuffer << std::endl; delete readBuffer; delete pKompexBlob; // --------------------------------------------------------------------------------------------------------- // create a sql statement with SQLite functions const char *param1 = "It's a happy day."; const char *param2 = "Muhahaha!"; std::cout << "\n" << pStmt->Mprintf("INSERT INTO table VALUES('%q', '%q')", param1, param2) << std::endl; // --------------------------------------------------------------------------------------------------------- // statistics std::cout << "\nGetNumberOfCheckedOutLookasideMemorySlots: " << pDatabase->GetNumberOfCheckedOutLookasideMemorySlots() << std::endl; std::cout << "GetHighestNumberOfCheckedOutLookasideMemorySlots: " << pDatabase->GetHighestNumberOfCheckedOutLookasideMemorySlots() << std::endl; std::cout << "GetHeapMemoryUsedByPagerCaches: " << pDatabase->GetHeapMemoryUsedByPagerCaches() << std::endl; std::cout << "GetHeapMemoryUsedToStoreSchemas: " << pDatabase->GetHeapMemoryUsedToStoreSchemas() << std::endl; std::cout << "GetHeapAndLookasideMemoryUsedByPreparedStatements: " << pDatabase->GetHeapAndLookasideMemoryUsedByPreparedStatements() << std::endl; std::cout << "GetPagerCacheHitCount: " << pDatabase->GetPagerCacheHitCount() << std::endl; std::cout << "GetPagerCacheMissCount: " << pDatabase->GetPagerCacheMissCount() << std::endl; std::cout << "GetNumberOfDirtyCacheEntries: " << pDatabase->GetNumberOfDirtyCacheEntries() << std::endl; std::cout << "GetNumberOfUnresolvedForeignKeys: " << pDatabase->GetNumberOfUnresolvedForeignKeys() << std::endl; std::cout << "GetLookasideMemoryHitCount: " << pDatabase->GetLookasideMemoryHitCount() << std::endl; std::cout << "GetLookasideMemoryMissCountDueToSmallSlotSize: " << pDatabase->GetLookasideMemoryMissCountDueToSmallSlotSize() << std::endl; std::cout << "GetLookasideMemoryMissCountDueToFullMemory: " << pDatabase->GetLookasideMemoryMissCountDueToFullMemory() << std::endl; // --------------------------------------------------------------------------------------------------------- // clean-up delete pStmt; delete pDatabase; } catch(Kompex::SQLiteException &exception) { std::cerr << "\nException Occured" << std::endl; exception.Show(); std::cerr << "SQLite result code: " << exception.GetSqliteResultCode() << std::endl; } /* // complete example for the usage of file and memory databases // (database layout is only fictitious) Kompex::SQLiteDatabase *pDatabase = new Kompex::SQLiteDatabase("scores.db", SQLITE_OPEN_READWRITE, 0); // move database to memory, so that we are work on the memory database hence pDatabase->MoveDatabaseToMemory(); Kompex::SQLiteStatement *pStmt = new Kompex::SQLiteStatement(pDatabase); // insert some data sets into the memory database pStmt->SqlStatement("INSERT INTO score(id, lastScore, avgScore) VALUES(1, 429, 341)"); pStmt->SqlStatement("INSERT INTO score(id, lastScore, avgScore) VALUES(2, 37, 44)"); pStmt->SqlStatement("INSERT INTO score(id, lastScore, avgScore) VALUES(3, 310, 280)"); // save the memory database to a file // if you don't do it, all database changes will be lost after closing the memory database pDatabase->SaveDatabaseFromMemoryToFile("newScores.db"); delete pStmt; delete pDatabase; */ std::cin.get(); return 0; }
int main(int argc, const char *argv[]) { if(argc != 3) { std::cout << "Usage: #> ./osg_openctm_sqlite inputdb row\n"; std::cout << "* draw an openctm mesh stored as a row in an sqlite db with osg\n"; return 0; } Kompex::SQLiteDatabase *pDatabase = new Kompex::SQLiteDatabase(argv[1],SQLITE_OPEN_READWRITE,0); Kompex::SQLiteStatement *pStmt = new Kompex::SQLiteStatement(pDatabase); int cRow = 0; int rowId = 0; int dbRow = 2; bool isEmpty = false; std::string rowFileKey; pStmt->Sql("SELECT rowid,filekey,empty FROM grid_mesh;"); while(pStmt->FetchRow()) { if(cRow == dbRow) { // row file key rowId = pStmt->GetColumnInt(0); rowFileKey = pStmt->GetColumnString(1); isEmpty = pStmt->GetColumnBool(2); } cRow++; } pStmt->FreeQuery(); Kompex::SQLiteBlob *pKompexBlob; if(!isEmpty) { // read in ctm blob to memory pKompexBlob=new Kompex::SQLiteBlob(pDatabase,"main","grid_mesh","mesh",1); size = pKompexBlob->GetBlobSize(); memblock = new char[size]; pKompexBlob->ReadBlob(memblock,size); delete pKompexBlob; std::cout << "# Read in " << rowFileKey << " (" << size << " bytes)\n"; // uncompress ctm CTMcontext context; CTMuint vertCount, triCount; CTMuint const* indices; CTMfloat const * vertices; context = ctmNewContext(CTM_IMPORT); g_pos = 0; ctmLoadCustom(context,ctmReadBlob,(void*)memblock); if(ctmGetError(context) == CTM_NONE) { // access the mesh data vertCount = ctmGetInteger(context, CTM_VERTEX_COUNT); vertices = ctmGetFloatArray(context, CTM_VERTICES); triCount = ctmGetInteger(context, CTM_TRIANGLE_COUNT); indices = ctmGetIntegerArray(context, CTM_INDICES); std::cout << "# Mesh has " << vertCount << " vertices\n"; std::cout << "# Mesh has " << triCount << " triangles\n"; // build up openscenegraph geometry osg::ref_ptr<osg::Vec3Array> listVxArray = new osg::Vec3Array(vertCount); unsigned int vxIdx=0; for(int i=0; i < listVxArray->size(); i++) { osg::Vec3 vertex; vertex.x() = vertices[vxIdx]; vxIdx++; vertex.y() = vertices[vxIdx]; vxIdx++; vertex.z() = vertices[vxIdx]; vxIdx++; listVxArray->at(i) = vertex; } osg::ref_ptr<osg::DrawElementsUInt> listIdxs = new osg::DrawElementsUInt(GL_TRIANGLES,triCount*3); for(int i=0; i < listIdxs->size(); i++) { listIdxs->at(i) = indices[i]; } osg::ref_ptr<osg::Geometry> geomMesh = new osg::Geometry; geomMesh->setVertexArray(listVxArray.get()); geomMesh->setNormalArray(listVxArray.get()); geomMesh->addPrimitiveSet(listIdxs.get()); osg::ref_ptr<osg::Geode> geodeMesh = new osg::Geode; geodeMesh->addDrawable(geomMesh.get()); osg::ref_ptr<osg::Group> groupRoot = new osg::Group; groupRoot->addChild(geodeMesh.get()); // free ctm memory ctmFreeContext(context); // start viewer osgViewer::Viewer viewer; viewer.setThreadingModel(osgViewer::ViewerBase::SingleThreaded); viewer.setUpViewInWindow(100,100,800,480); viewer.setSceneData(groupRoot.get()); return viewer.run(); } else { std::cout << "# Fatal error reading in mesh file! Exiting...\n"; ctmFreeContext(context); return 0; } // // stuff delete[] memblock; // delete pStmt; // delete pDatabase; return 0; } else { std::cout << "# Row " << rowId << " was empty! Exiting...\n"; delete pStmt; delete pDatabase; return 0; } }