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<?php |
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/* |
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* The MIT License |
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* |
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* Copyright 2017 David Schoenbauer <[email protected]>. |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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* copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in |
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* all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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* THE SOFTWARE. |
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*/ |
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namespace DSchoenbauer\Sql\Command; |
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use DSchoenbauer\Sql\Exception\EmptyDatasetException; |
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use DSchoenbauer\Sql\Exception\ExecutionErrorException; |
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use DSchoenbauer\Sql\Exception\NoRecordsAffectedException; |
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use DSchoenbauer\Sql\Exception\NoRecordsAffectedUpdateException; |
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use DSchoenbauer\Sql\Where\WhereStatementInterface; |
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use PDO; |
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/** |
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* updates values in a PDO connected resource |
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* @author David Schoenbauer <[email protected]> |
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* @since v1.0.0 |
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*/ |
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class Update extends AbstractCommand |
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{ |
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private $table; |
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private $data = []; |
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use WhereTrait; |
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/** |
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* @param string $table table with which you wish to append to |
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* @param array $data a single level associative array containing keys that |
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* represent the fields and values that represent new values to be added into |
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* the table |
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* @param null|WhereStatementInterface $where an object that is designed to return |
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* a where statement to limit the data that is affected by the update |
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* @since v1.0.0 |
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*/ |
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public function __construct( |
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$table, |
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array $data, |
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WhereStatementInterface $where = null |
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) { |
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$this->setTable($table)->setData($data)->setWhere($where); |
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} |
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/** |
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* takes the SQL and the data provided and executes the query with the data |
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* @param PDO $pdo a connection object that defines where the connection is |
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* to be executed |
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* @return bool TRUE on success or FALSE on failure. |
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* @throws NoRecordsAffectedException if strict is set to true an exception will be thrown if |
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* @throws EmptyDatasetException if no data has been set no fields can be discerned and no query can be made |
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* @throws ExecutionErrorException thrown when any exception or SQL failure occurs |
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* @since v1.0.0 |
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*/ |
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public function execute(PDO $pdo) |
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{ |
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try { |
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$stmt = $pdo->prepare($this->getSql()); |
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$result = $stmt->execute($this->getCombinedData()); |
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$this->checkAffected($stmt, new NoRecordsAffectedUpdateException()); |
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return $result; |
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} catch (NoRecordsAffectedException $exc) { |
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throw $exc; |
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} catch (EmptyDatasetException $exc) { |
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throw $exc; |
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} catch (\Exception $exc) { |
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throw new ExecutionErrorException($exc->getMessage()); |
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} |
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} |
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/** |
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* Generates a SQL statement ready to be prepared for execution with the |
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* intent of updating data |
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* @return string a string that represents an update statement ready to be |
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* prepared by PDO |
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* @throws EmptyDatasetException if no data has been set no fields can be |
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* discerned and no query can be made |
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* @since v1.0.0 |
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*/ |
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public function getSql() |
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{ |
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if (count($this->getData()) === 0) { |
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throw new EmptyDatasetException(); |
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} |
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$sets = array_map(function ($value) { |
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return sprintf('%1$s = :%1$s', $value); |
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}, array_keys($this->getData())); |
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$where = $this->getWhereStatement(); |
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$sqlTemplate = "UPDATE %s SET %s %s"; |
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return trim(sprintf( |
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$sqlTemplate, |
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$this->getTable(), |
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implode(',', $sets), |
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$where |
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)); |
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} |
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/** |
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* retrieves the table with which you wish to update |
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* @return string table with which you wish to update |
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* @since v1.0.0 |
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*/ |
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public function getTable() |
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{ |
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return $this->table; |
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} |
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/** |
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* defines a table with which you wish to update |
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* @param string $table a table with which you wish to update |
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* @return Update for method chaining |
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* @since v1.0.0 |
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*/ |
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public function setTable($table) |
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{ |
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$this->table = $table; |
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return $this; |
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} |
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/** |
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* Returns a combination of data from Where statement and from this object |
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* @return array |
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* @since v1.0.0 |
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*/ |
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public function getCombinedData() |
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{ |
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$whereData = $this->getWhereData(); |
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return array_merge($this->getData(), $whereData); |
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} |
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/** |
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* retrieves the data that is used to generate the update statement. The |
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* fields of the array are used to generate the field list. |
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* @return array a single level associative array containing keys that |
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* represent the fields and values that represent new values to be updated in the table |
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* @since v1.0.0 |
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*/ |
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public function getData() |
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{ |
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return $this->data; |
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} |
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/** |
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* sets the data that is used to generate the update statement. The fields |
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* of the array are used to generate the field list. |
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* @param array $data a single level associative array containing keys that |
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* represent the fields and values that represent values to be updated into the table |
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* @return Update for method chaining |
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* @since v1.0.0 |
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*/ |
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public function setData($data) |
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{ |
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$this->data = $data; |
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return $this; |
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} |
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} |
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