21 #ifndef __MYSQL_FEATURE_MANAGER_H__
22 #define __MYSQL_FEATURE_MANAGER_H__
25 #include "services/daal_memory.h"
26 #include "data_management/data_source/data_source.h"
27 #include "data_management/data/data_dictionary.h"
28 #include "data_management/data/numeric_table.h"
29 #include "data_management/data/homogen_numeric_table.h"
41 namespace data_management
54 class MySQLFeatureManager
57 MySQLFeatureManager() : _errors(
new services::ErrorCollection()) {}
66 DataSourceIface::DataSourceStatus statementResultsNumericTable(SQLHSTMT hdlStmt, NumericTable *nt,
size_t maxRows);
74 void createDictionary(SQLHSTMT hdlStmt, DataSourceDictionary *dict)
76 SQLSMALLINT nFeatures = 0;
77 SQLRETURN ret = SQLNumResultCols(hdlStmt, &nFeatures);
79 dict->setNumberOfFeatures( nFeatures );
84 for (
int i = 0 ; i < nFeatures; i++)
86 SQLSMALLINT bufferLenUsed;
89 ret = SQLColAttributes(hdlStmt, (SQLUSMALLINT)i + 1, SQL_DESC_UNSIGNED, NULL, 0, NULL, &sqlIsUnsigned);
90 if (!SQL_SUCCEEDED(ret)) { _errors->add(services::ErrorODBC);
return; }
92 ret = SQLColAttributes(hdlStmt, (SQLUSMALLINT)i + 1, SQL_DESC_TYPE, NULL, 0, NULL, &sqlType);
93 if (!SQL_SUCCEEDED(ret)) { _errors->add(services::ErrorODBC);
return; }
95 ret = SQLColAttributes(hdlStmt, (SQLUSMALLINT)i + 1, SQL_DESC_OCTET_LENGTH, NULL, 0, NULL, &sqlTypeLength);
96 if (!SQL_SUCCEEDED(ret)) { _errors->add(services::ErrorODBC);
return; }
98 ret = SQLColAttributes(hdlStmt, (SQLUSMALLINT)i + 1, SQL_DESC_NAME , (SQLPOINTER)label, (SQLSMALLINT)bufferSize, &bufferLenUsed, NULL);
99 if (!SQL_SUCCEEDED(ret)) { _errors->add(services::ErrorODBC);
return; }
103 DataSourceFeature &feature = (*dict)[i];
105 feature.setFeatureName(label);
107 if (isToDouble(sqlType))
109 feature.setType<
double>();
111 else if (isToFloat(sqlType))
113 feature.setType<
float>();
115 else if (isToInt(sqlType))
117 if (sqlTypeLength <= 8)
119 (sqlIsUnsigned == SQL_TRUE) ? feature.setType<
unsigned char>() : feature.setType<
char>();
121 else if (sqlTypeLength <= 16)
123 (sqlIsUnsigned == SQL_TRUE) ? feature.setType<
unsigned short>() : feature.setType<
short>();
125 else if (sqlTypeLength <= 32)
127 (sqlIsUnsigned == SQL_TRUE) ? feature.setType<
unsigned int>() : feature.setType<
int>();
129 else if (sqlTypeLength <= 64)
131 (sqlIsUnsigned == SQL_TRUE) ? feature.setType<DAAL_UINT64>() : feature.setType<DAAL_INT64>();
133 else if (sqlType == SQL_BIGINT)
135 (sqlIsUnsigned == SQL_TRUE) ? feature.setType<DAAL_UINT64>() : feature.setType<DAAL_INT64>();
150 std::string setLimitQuery(std::string &query,
size_t idx_last_read,
size_t maxRows)
152 std::stringstream ss;
153 ss << query <<
" LIMIT " << idx_last_read <<
", " << maxRows <<
";";
157 services::SharedPtr<services::ErrorCollection> getErrors()
163 services::SharedPtr<services::ErrorCollection> _errors;
165 size_t getStrictureSize(NumericTableDictionary *dict);
166 size_t typeSize(data_feature_utils::IndexNumType indexNumType);
167 SQLSMALLINT getTargetType(data_feature_utils::IndexNumType indexNumType);
169 bool isToDouble(
int identifier)
171 const int arraySize = 4;
172 int SQLTypesToDouble[arraySize] = {SQL_NUMERIC, SQL_DECIMAL, SQL_DOUBLE, SQL_FLOAT};
173 return isContain(identifier, SQLTypesToDouble, arraySize);
175 bool isToFloat(
int identifier)
177 const int arraySize = 1;
178 int SQLTypesToFloat[arraySize] = {SQL_REAL};
179 return isContain(identifier, SQLTypesToFloat, arraySize);
181 bool isToInt(
int identifier)
183 const int arraySize = 6;
184 int SQLTypesToInt[arraySize] = {SQL_INTEGER, SQL_SMALLINT, SQL_TINYINT, SQL_BIGINT, SQL_BIT, SQL_BINARY};
185 return isContain(identifier, SQLTypesToInt, arraySize);
187 bool isContain(
int identifier,
int array[],
int arraySize)
189 for (
int i = 0; i < arraySize; i++)
191 if (array[i] == identifier)
200 DataSourceIface::DataSourceStatus MySQLFeatureManager::statementResultsNumericTable(SQLHSTMT hdlStmt, NumericTable *nt,
size_t maxRows)
203 size_t nFeatures = nt->getNumberOfColumns();
205 NumericTableDictionaryPtr dict = nt->getDictionarySharedPtr();
206 data_feature_utils::IndexNumType indexNumType = data_feature_utils::getIndexNumType<DAAL_DATA_TYPE>();
208 SQLLEN *bindInd = (SQLLEN *)daal::services::daal_malloc(
sizeof(SQLLEN) * nFeatures);
209 DAAL_DATA_TYPE *fetchBuffer = (DAAL_DATA_TYPE *)daal::services::daal_malloc(
sizeof(DAAL_DATA_TYPE) * nFeatures);
210 for (
int j = 0; j < nFeatures; j++)
212 if (indexNumType != data_feature_utils::DAAL_OTHER_T)
214 ret = SQLBindCol(hdlStmt, j + 1, getTargetType(indexNumType), (SQLPOINTER)&fetchBuffer[j], 0, &bindInd[j]);
215 if (!SQL_SUCCEEDED(ret)) { _errors->add(services::ErrorODBC);
return DataSource::notReady; }
224 BlockDescriptor<DAAL_DATA_TYPE> block;
225 nt->getBlockOfRows(0, maxRows, writeOnly, block);
226 DAAL_DATA_TYPE *ntBuffer = block.getBlockPtr();
228 while (SQL_SUCCEEDED(ret = SQLFetchScroll(hdlStmt, SQL_FETCH_NEXT, 1)))
230 for (
int j = 0; j < nFeatures; j++)
232 if (bindInd[j] == SQL_NULL_DATA)
234 ntBuffer[read * nFeatures + j] = 0.0;
237 indexNumType = (*dict)[j].indexType;
238 if (indexNumType != data_feature_utils::DAAL_OTHER_T)
240 ntBuffer[read * nFeatures + j] = *((DAAL_DATA_TYPE *) & (fetchBuffer[j]));
244 ntBuffer[read * nFeatures + j] = 0.0;
250 nt->releaseBlockOfRows(block);
252 DataSourceIface::DataSourceStatus status = DataSourceIface::readyForLoad;
253 if (ret != SQL_NO_DATA)
255 if (!SQL_SUCCEEDED(ret))
257 status = DataSourceIface::notReady;
258 _errors->add(services::ErrorODBC);
265 status = DataSourceIface::endOfData;
268 daal::services::daal_free(fetchBuffer);
269 daal::services::daal_free(bindInd);
273 size_t MySQLFeatureManager::getStrictureSize(NumericTableDictionary *dict)
275 size_t structureSize = 0;
276 size_t nFeatures = dict->getNumberOfFeatures();
277 for (
int i = 0; i < nFeatures; i++)
279 data_feature_utils::IndexNumType indexNumType = (*dict)[i].indexType;
280 structureSize += typeSize(indexNumType);
282 return structureSize;
285 size_t MySQLFeatureManager::typeSize(data_feature_utils::IndexNumType indexNumType)
287 if (indexNumType == data_feature_utils::DAAL_FLOAT32) {
return 4; }
288 else if (indexNumType == data_feature_utils::DAAL_FLOAT64) {
return 8; }
289 else if (indexNumType == data_feature_utils::DAAL_INT32_S) {
return 4; }
290 else if (indexNumType == data_feature_utils::DAAL_INT32_U) {
return 4; }
291 else if (indexNumType == data_feature_utils::DAAL_INT64_S) {
return 8; }
292 else if (indexNumType == data_feature_utils::DAAL_INT64_U) {
return 8; }
293 else if (indexNumType == data_feature_utils::DAAL_INT8_S) {
return 1; }
294 else if (indexNumType == data_feature_utils::DAAL_INT8_U) {
return 1; }
295 else if (indexNumType == data_feature_utils::DAAL_INT16_S) {
return 2; }
296 else if (indexNumType == data_feature_utils::DAAL_INT16_U) {
return 2; }
300 SQLSMALLINT MySQLFeatureManager::getTargetType(data_feature_utils::IndexNumType indexNumType)
302 if (indexNumType == data_feature_utils::DAAL_FLOAT32) {
return SQL_C_FLOAT; }
303 else if (indexNumType == data_feature_utils::DAAL_FLOAT64) {
return SQL_C_DOUBLE; }
304 else if (indexNumType == data_feature_utils::DAAL_INT32_S) {
return SQL_C_SLONG; }
305 else if (indexNumType == data_feature_utils::DAAL_INT32_U) {
return SQL_C_ULONG; }
306 else if (indexNumType == data_feature_utils::DAAL_INT64_S) {
return SQL_C_SBIGINT; }
307 else if (indexNumType == data_feature_utils::DAAL_INT64_U) {
return SQL_C_UBIGINT; }
308 else if (indexNumType == data_feature_utils::DAAL_INT8_S) {
return SQL_C_STINYINT; }
309 else if (indexNumType == data_feature_utils::DAAL_INT8_U) {
return SQL_C_UTINYINT; }
310 else if (indexNumType == data_feature_utils::DAAL_INT16_S) {
return SQL_C_SSHORT; }
311 else if (indexNumType == data_feature_utils::DAAL_INT16_U) {
return SQL_C_USHORT; }
312 else {
return SQL_C_SLONG; }
316 using interface1::MySQLFeatureManager;
daal::data_management::interface1::BlockDescriptor::getBlockPtr
DataType * getBlockPtr() const
Definition: numeric_table.h:69
daal
Definition: algorithm_base_common.h:31
daal::data_management::interface1::MySQLFeatureManager::statementResultsNumericTable
DataSourceIface::DataSourceStatus statementResultsNumericTable(SQLHSTMT hdlStmt, NumericTable *nt, size_t maxRows)
Definition: mysql_feature_manager.h:200
daal::data_management::interface1::DataSourceFeature::setType
void setType()
Definition: data_source_dictionary.h:128
daal::data_management::interface1::DataSourceFeature
Data structure that describes the Data Source feature.
Definition: data_source_dictionary.h:49
daal::data_management::interface1::NumericTable::getDictionarySharedPtr
virtual NumericTableDictionaryPtr getDictionarySharedPtr() const DAAL_C11_OVERRIDE
Definition: numeric_table.h:632
daal::data_management::interface1::NumericTable::getNumberOfColumns
size_t getNumberOfColumns() const
Definition: numeric_table.h:651
daal::data_management::interface1::MySQLFeatureManager::createDictionary
void createDictionary(SQLHSTMT hdlStmt, DataSourceDictionary *dict)
Definition: mysql_feature_manager.h:74
daal::data_management::interface1::DataSourceFeature::setFeatureName
void setFeatureName(const std::string &featureName)
Definition: data_source_dictionary.h:112
daal::data_management::interface1::Dictionary::getNumberOfFeatures
size_t getNumberOfFeatures() const
Definition: data_dictionary.h:282
daal::data_management::interface1::MySQLFeatureManager
Contains MySQL-specific commands.
Definition: mysql_feature_manager.h:54
daal::services::daal_malloc
DAAL_EXPORT void * daal_malloc(size_t size, size_t alignment=DAAL_MALLOC_DEFAULT_ALIGNMENT)
daal::data_management::interface1::NumericTable
Class for a data management component responsible for representation of data in the numeric format...
Definition: numeric_table.h:574
daal::data_management::interface1::NumericTable::resize
virtual services::Status resize(size_t nrows) DAAL_C11_OVERRIDE
Definition: numeric_table.h:636
daal::data_management::interface1::Dictionary::setNumberOfFeatures
virtual services::Status setNumberOfFeatures(size_t numberOfFeatures)
Definition: data_dictionary.h:263
daal::data_management::interface1::MySQLFeatureManager::setLimitQuery
std::string setLimitQuery(std::string &query, size_t idx_last_read, size_t maxRows)
Definition: mysql_feature_manager.h:150
daal::data_management::interface1::DataSourceIface::DataSourceStatus
DataSourceStatus
Specifies the status of the Data Source.
Definition: data_source.h:57
daal::services::daal_free
DAAL_EXPORT void daal_free(void *ptr)
daal::data_management::interface1::DataSourceIface::readyForLoad
Definition: data_source.h:59
daal::data_management::interface1::BlockDescriptor< DAAL_DATA_TYPE >
daal::data_management::interface1::DataSourceIface::endOfData
Definition: data_source.h:61
daal::data_management::interface1::DenseNumericTableIface::releaseBlockOfRows
virtual services::Status releaseBlockOfRows(BlockDescriptor< double > &block)=0
daal::services::ErrorODBC
Definition: error_indexes.h:376
daal::data_management::interface1::DataSourceIface::notReady
Definition: data_source.h:62
daal::data_management::interface1::DenseNumericTableIface::getBlockOfRows
virtual services::Status getBlockOfRows(size_t vector_idx, size_t vector_num, ReadWriteMode rwflag, BlockDescriptor< double > &block)=0
daal::data_management::interface1::Dictionary
Class that represents a dictionary of a data set and provides methods to work with the data dictionar...
Definition: data_dictionary.h:158