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<?php |
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namespace JsonTable\Store; |
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use \JsonTable\Base; |
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/** |
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* Postgresql store. |
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* |
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* @package JSON table |
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*/ |
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class PostgresqlStore extends AbstractStore |
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{ |
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/** |
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* @var string The name of the table to store the data into. |
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*/ |
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private $tableName; |
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/** |
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* @var string The name of the primary key column in the table the data is being stored in. |
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*/ |
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private $primaryKey; |
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/** |
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* @var array Data type and format metadata for each column being inserted. |
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* The Key is the CSV column position in the file and value is an array of: |
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* "pdo_type" - The PDO data type |
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* "type" - The schema data type |
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* "format" - The schema format. |
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*/ |
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private $column_metadata = []; |
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/** |
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* @var string The CSV list of columns to be inserted into. |
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*/ |
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private $columnList; |
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/** |
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* @var string The parameters to be used in the insert statement. |
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*/ |
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private $insertParameters; |
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/** |
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* @var int The current CSV row being stored. |
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*/ |
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private $currentCsvRow; |
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/** |
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* @var int The position of the current CSV row row in the CSV file. |
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*/ |
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private $rowNumber; |
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/** |
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* @var int The position of the current CSV field in the current row. |
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*/ |
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private $fieldNumber; |
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/** |
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* @static |
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* |
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* @var array Mappings of JSON table types to PDO param types. |
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*/ |
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private static $pdo_type_mappings = [ |
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'any' => \PDO::PARAM_STR, |
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'array' => \PDO::PARAM_STR, |
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'boolean' => \PDO::PARAM_BOOL, |
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'date' => \PDO::PARAM_STR, |
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'datetime' => \PDO::PARAM_STR, |
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'time' => \PDO::PARAM_STR, |
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'integer' => \PDO::PARAM_INT, |
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'null' => \PDO::PARAM_NULL, |
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'number' => \PDO::PARAM_STR, |
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'string' => \PDO::PARAM_STR |
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]; |
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/** |
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* Store the data. |
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* |
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* @param string $tableName The name of the table to save the data in. With optional schema prefix. |
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* @param string $primaryKey The name of the primary key on the table. [optional] The default is "id". |
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* The primary key does not need to be listed in the CSV if it has |
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* a serial associated with it. |
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* |
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* @return boolean true |
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*/ |
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public function store($tableName, $primaryKey = 'id') |
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{ |
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$this->tableName = (string) $tableName; |
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$this->primaryKey = (string) $primaryKey; |
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Base::openFile(); |
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$this->setColumns(); |
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$this->setColumnsMetadata(); |
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$this->setInsertParameters(); |
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Base::rewindFilePointerToFirstData(); |
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$this->rowNumber = 1; |
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$this->storeCsvRows(); |
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return true; |
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} |
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/** |
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* Get the PDO type, schema type & schema format for each column in the CSV file. |
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* |
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* @return boolean true on success |
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*/ |
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private function setColumnsMetadata() |
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{ |
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foreach (Base::$headerColumns as $li_csv_field_position => $ls_csv_column_name) { |
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$la_metadata = []; |
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$li_csv_field_position += 1; |
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$li_schema_key = $this->getSchemaKeyFromName($ls_csv_column_name); |
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$lo_schema_field = self::$schemaJson->fields[$li_schema_key]; |
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$la_metadata['type'] = $this->getColumnType($lo_schema_field); |
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$la_metadata['pdo_type'] = self::$pdo_type_mappings[$la_metadata['type']]; |
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$la_metadata['format'] = $this->getColumnFormat($lo_schema_field); |
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$this->column_metadata[$li_csv_field_position] = $la_metadata; |
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} |
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return true; |
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} |
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/** |
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* Set the columns that will be inserted into. |
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* The columns include the "csv_row" field to store the CSV row |
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* number to help make error messages more useful. |
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* |
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* @return void |
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*/ |
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private function setColumns() |
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{ |
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$this->columnList = implode(', ', Base::$headerColumns); |
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$this->columnList .= ', csv_row'; |
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} |
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/** |
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* Set the insert parameters string. |
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* |
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* @return void |
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*/ |
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private function setInsertParameters() |
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{ |
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$this->insertParameters = implode(', ', array_fill(0, count(Base::$headerColumns), '?')); |
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$this->insertParameters .= ', ?'; |
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} |
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/** |
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* Store each of the CSV rows. |
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* |
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* @return void |
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* |
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* @throws \Exception if the row couldn't be inserted into the database. |
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*/ |
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private function storeCsvRows() |
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{ |
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while ($this->currentCsvRow = Base::loopThroughFileRows()) { |
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$insertSql = "INSERT INTO $this->tableName ( |
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$this->columnList |
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) |
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VALUES ( |
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$this->insertParameters |
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) |
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RETURNING |
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$this->primaryKey AS key"; |
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$statement = self::$pdoConnection->prepare($insertSql); |
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$this->fieldNumber = 1; |
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foreach ($this->currentCsvRow as &$fieldValue) { |
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$columnMetadata = $this->column_metadata[$this->fieldNumber]; |
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$fieldValue = $this->updateFieldValue($columnMetadata, $fieldValue); |
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$statement->bindParam($this->fieldNumber++, $fieldValue, $columnMetadata['pdo_type']); |
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} |
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$statement->bindParam($this->fieldNumber, $this->rowNumber, \PDO::PARAM_INT); |
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$la_result = $statement->execute(); |
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if (false === $la_result) { |
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throw new \Exception("Could not insert row $this->rowNumber into the database."); |
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} |
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$this->insertedIds[] = $statement->fetch(\PDO::FETCH_ASSOC); |
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$this->rowNumber++; |
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} |
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} |
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/** |
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* Do any data manipulation required on the specified column's value. |
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* |
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* @param array $columnMetadata The metadata about the column. |
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* @param string $fieldValue The value to update. |
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* |
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* @return string The updated field value. |
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*/ |
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private function updateFieldValue($columnMetadata, $fieldValue) |
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{ |
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if ('date' === $columnMetadata['type'] && 'default' !== $columnMetadata['format']) { |
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$fieldValue = self::isoDateFromFormat($columnMetadata['format'], $fieldValue); |
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} |
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if ('boolean' === $columnMetadata['type']) { |
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$fieldValue = self::booleanFromFilterBooleans($fieldValue); |
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} |
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if ('' === $fieldValue || '\N' === $fieldValue) { |
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$fieldValue = null; |
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} |
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return $fieldValue; |
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} |
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} |
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Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..