public function generate(DataSourceHandler $handler, DatasetMetaData $dataset) {
$assembledTableName = assemble_database_entity_name($handler, $dataset->datasourceName, $dataset->source);
// NOTE: we cannot use TRUNCATE TABLE because this operation has to be part of a transaction
// Also truncate does to work in some databases when there are FOREIGN KEYs pointing to this table
return "DELETE FROM $assembledTableName";
}
public function prepare(DataSourceHandler $handler, DataSourceMetaData $datasource, $tableName, array $columnNames, array $records) {
$sqls = NULL;
$assembledTableName = assemble_database_entity_name($handler, $datasource->name, $tableName);
$header = "INSERT INTO $assembledTableName (" . implode(', ', $columnNames) . ') VALUES ';
foreach ($records as $record) {
$sqls[] = $header . '(' . implode(', ', $record) . ')';
}
return $sqls;
}
public function prepare(DataSourceHandler $handler, DataSourceMetaData $datasource, $tableName, array $columnNames, array $records) {
$sql = NULL;
$assembledTableName = assemble_database_entity_name($handler, $datasource->name, $tableName);
$header = "INTO $assembledTableName (" . implode(', ', $columnNames) . ') VALUES';
foreach ($records as $record) {
$sql .= "\n $header (" . implode(', ', $record) . ')';
}
$sql = "INSERT ALL$sql\nSELECT * FROM dual";
return $sql;
}
public function prepare(DataSourceHandler $handler, DataSourceMetaData $datasource, $tableName, array $setColumnValues = NULL, array $whereColumnValues = NULL) {
// we do not need to update any columns. Just ignoring this request
if (!isset($setColumnValues)) {
return NULL;
}
$assembledTableName = assemble_database_entity_name($handler, $datasource->name, $tableName);
$sql = "UPDATE $assembledTableName SET " . $this->prepareColumnExpressions($setColumnValues, ', ');
if (isset($whereColumnValues)) {
$sql .= ' WHERE ' . $this->prepareColumnExpressions($whereColumnValues, ' AND ');
}
return $sql;
}
public function prepare(DataSourceHandler $handler, DataSourceMetaData $datasource, $tableName, array $columnNames, array $records) {
$indent = str_pad('', InsertStatementPrint::INDENT__VALUES);
$assembledTableName = assemble_database_entity_name($handler, $datasource->name, $tableName);
$sql = NULL;
foreach ($records as $record) {
if (isset($sql)) {
$sql .= ",\n{$indent} ";
}
$sql .= '(' . implode(', ', $record) . ')';
}
$sql = "INSERT INTO $assembledTableName (" . implode(', ', $columnNames) . ")\n{$indent}VALUES " . $sql;
return $sql;
}
public function prepare(DataSourceHandler $handler, DataSourceMetaData $datasource, $tableName, array $keys = NULL) {
$sqls = NULL;
$assembledTableName = assemble_database_entity_name($handler, $datasource->name, $tableName);
if (isset($keys)) {
$header = "DELETE FROM $assembledTableName";
foreach ($keys as $key) {
$s = NULL;
foreach ($key as $columnName => $value) {
if (isset($s)) {
$s .= ' AND ';
}
else {
$s = ' WHERE ';
}
$s .= $columnName;
if (is_array($value)) {
if (count($value) == 1) {
$s .= ' = ' . $value[0];
}
else {
$s .= ' IN (' . implode(', ', $value) . ')';
}
}
else {
$s .= ' = ' . $value;
}
}
$sqls[] = $header . $s;
}
}
return $sqls;
}
public function generate(DataSourceHandler $handler, DatasetMetaData $dataset) {
$assembledTableName = assemble_database_entity_name($handler, $dataset->datasourceName, $dataset->source);
return "DROP TABLE $assembledTableName";
}
public function prepareTableUpdateStatement(DataSourceHandler $handler, DataControllerCallContext $callcontext, DatasetMetaData $dataset, array $operations) {
$assembledTableName = assemble_database_entity_name($handler, $dataset->datasourceName, $dataset->source);
$indent = str_pad('', SelectStatementPrint::INDENT);
$sql = '';
foreach ($operations as $operation) {
if ($sql != '') {
$sql .= $this->getUpdateClauseDelimiter();
}
$this->prepareTableUpdateOperation($handler, $callcontext, $dataset, $operation, $indent, $sql);
}
return ($sql == '') ? NULL : "ALTER TABLE $assembledTableName{$sql}";
}
protected function assembleTableName() {
$assembledTableName = $this->name;
$index = strpos($assembledTableName, '.');
if ($index === FALSE) {
$environment_metamodel = data_controller_get_environment_metamodel();
$datasourceName = $this->dataset->datasourceName;
$datasource = $environment_metamodel->getDataSource($datasourceName);
$datasourceQueryHandler = DataSourceQueryFactory::getInstance()->getHandler($datasource->type);
$assembledTableName = assemble_database_entity_name($datasourceQueryHandler, $datasource->name, $assembledTableName);
}
return $assembledTableName;
}
