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admin/phpMyAdmin/libraries/classes/Plugins/ExportPlugin.php
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381
admin/phpMyAdmin/libraries/classes/Plugins/ExportPlugin.php
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<?php
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/**
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* Abstract class for the export plugins
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*/
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declare(strict_types=1);
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namespace PhpMyAdmin\Plugins;
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use PhpMyAdmin\ConfigStorage\Relation;
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use PhpMyAdmin\Export;
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use PhpMyAdmin\Properties\Plugins\ExportPluginProperties;
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use PhpMyAdmin\Properties\Plugins\PluginPropertyItem;
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use PhpMyAdmin\Transformations;
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use function stripos;
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/**
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* Provides a common interface that will have to be implemented by all of the
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* export plugins. Some of the plugins will also implement other public
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* methods, but those are not declared here, because they are not implemented
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* by all export plugins.
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*/
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abstract class ExportPlugin implements Plugin
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{
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/**
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* Object containing the specific export plugin type properties.
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*
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* @var ExportPluginProperties
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*/
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protected $properties;
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/** @var Relation */
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public $relation;
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/** @var Export */
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protected $export;
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/** @var Transformations */
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protected $transformations;
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/**
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* @psalm-suppress InvalidArrayOffset, MixedAssignment, MixedMethodCall
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*/
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final public function __construct()
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{
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$this->relation = $GLOBALS['containerBuilder']->get('relation');
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$this->export = $GLOBALS['containerBuilder']->get('export');
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$this->transformations = $GLOBALS['containerBuilder']->get('transformations');
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$this->init();
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$this->properties = $this->setProperties();
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}
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/**
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* Outputs export header
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*/
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abstract public function exportHeader(): bool;
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/**
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* Outputs export footer
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*/
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abstract public function exportFooter(): bool;
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/**
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* Outputs database header
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*
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* @param string $db Database name
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* @param string $dbAlias Aliases of db
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*/
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abstract public function exportDBHeader($db, $dbAlias = ''): bool;
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/**
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* Outputs database footer
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*
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* @param string $db Database name
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*/
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abstract public function exportDBFooter($db): bool;
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/**
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* Outputs CREATE DATABASE statement
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*
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* @param string $db Database name
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* @param string $exportType 'server', 'database', 'table'
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* @param string $dbAlias Aliases of db
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*/
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abstract public function exportDBCreate($db, $exportType, $dbAlias = ''): bool;
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/**
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* Outputs the content of a table
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*
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* @param string $db database name
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* @param string $table table name
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* @param string $crlf the end of line sequence
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* @param string $errorUrl the url to go back in case of error
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* @param string $sqlQuery SQL query for obtaining data
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* @param array $aliases Aliases of db/table/columns
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*/
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abstract public function exportData(
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$db,
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$table,
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$crlf,
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$errorUrl,
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$sqlQuery,
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array $aliases = []
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): bool;
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/**
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* The following methods are used in /export or in /database/operations,
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* but they are not implemented by all export plugins
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*/
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/**
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* Exports routines (procedures and functions)
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*
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* @param string $db Database
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* @param array $aliases Aliases of db/table/columns
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*/
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public function exportRoutines($db, array $aliases = []): bool
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{
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return true;
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}
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/**
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* Exports events
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*
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* @param string $db Database
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*/
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public function exportEvents($db): bool
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{
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return true;
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}
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/**
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* Outputs for raw query
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*
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* @param string $errorUrl the url to go back in case of error
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* @param string|null $db the database where the query is executed
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* @param string $sqlQuery the rawquery to output
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* @param string $crlf the end of line sequence
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*/
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public function exportRawQuery(
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string $errorUrl,
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?string $db,
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string $sqlQuery,
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string $crlf
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): bool {
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return false;
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}
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/**
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* Outputs table's structure
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*
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* @param string $db database name
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* @param string $table table name
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* @param string $crlf the end of line sequence
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* @param string $errorUrl the url to go back in case of error
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* @param string $exportMode 'create_table','triggers','create_view',
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* 'stand_in'
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* @param string $exportType 'server', 'database', 'table'
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* @param bool $relation whether to include relation comments
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* @param bool $comments whether to include the pmadb-style column comments
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* as comments in the structure; this is deprecated
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* but the parameter is left here because /export
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* calls exportStructure() also for other export
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* types which use this parameter
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* @param bool $mime whether to include mime comments
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* @param bool $dates whether to include creation/update/check dates
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* @param array $aliases Aliases of db/table/columns
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*/
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public function exportStructure(
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$db,
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$table,
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$crlf,
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$errorUrl,
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$exportMode,
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$exportType,
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$relation = false,
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$comments = false,
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$mime = false,
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$dates = false,
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array $aliases = []
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): bool {
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return true;
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}
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/**
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* Exports metadata from Configuration Storage
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*
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* @param string $db database being exported
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* @param string|array $tables table(s) being exported
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* @param array $metadataTypes types of metadata to export
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*/
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public function exportMetadata(
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$db,
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$tables,
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array $metadataTypes
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): bool {
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return true;
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}
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/**
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* Returns a stand-in CREATE definition to resolve view dependencies
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*
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* @param string $db the database name
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* @param string $view the view name
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* @param string $crlf the end of line sequence
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* @param array $aliases Aliases of db/table/columns
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*
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* @return string resulting definition
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*/
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public function getTableDefStandIn($db, $view, $crlf, $aliases = [])
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{
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return '';
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}
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/**
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* Outputs triggers
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*
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* @param string $db database name
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* @param string $table table name
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*
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* @return string Formatted triggers list
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*/
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protected function getTriggers($db, $table)
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{
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return '';
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}
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/**
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* Plugin specific initializations.
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*/
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protected function init(): void
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{
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}
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/**
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* Gets the export specific format plugin properties
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*
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* @return ExportPluginProperties
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*/
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public function getProperties(): PluginPropertyItem
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{
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return $this->properties;
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}
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/**
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* Sets the export plugins properties and is implemented by each export plugin.
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*/
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abstract protected function setProperties(): ExportPluginProperties;
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/**
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* The following methods are implemented here so that they
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* can be used by all export plugin without overriding it.
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* Note: If you are creating a export plugin then don't include
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* below methods unless you want to override them.
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*/
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/**
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* Initialize aliases
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*
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* @param array $aliases Alias information for db/table/column
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* @param string $db the database
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* @param string $table the table
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*/
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public function initAlias($aliases, &$db, &$table = null): void
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{
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if (! empty($aliases[$db]['tables'][$table]['alias'])) {
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$table = $aliases[$db]['tables'][$table]['alias'];
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}
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if (empty($aliases[$db]['alias'])) {
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return;
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}
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$db = $aliases[$db]['alias'];
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}
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/**
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* Search for alias of a identifier.
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*
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* @param array $aliases Alias information for db/table/column
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* @param string $id the identifier to be searched
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* @param string $type db/tbl/col or any combination of them
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* representing what to be searched
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* @param string $db the database in which search is to be done
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* @param string $tbl the table in which search is to be done
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*
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* @return string alias of the identifier if found or ''
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*/
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public function getAlias(array $aliases, $id, $type = 'dbtblcol', $db = '', $tbl = '')
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{
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if (! empty($db) && isset($aliases[$db])) {
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$aliases = [
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$db => $aliases[$db],
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];
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}
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// search each database
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foreach ($aliases as $db_key => $db) {
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// check if id is database and has alias
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if (stripos($type, 'db') !== false && $db_key === $id && ! empty($db['alias'])) {
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return $db['alias'];
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}
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if (empty($db['tables'])) {
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continue;
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}
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if (! empty($tbl) && isset($db['tables'][$tbl])) {
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$db['tables'] = [
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$tbl => $db['tables'][$tbl],
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];
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}
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// search each of its tables
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foreach ($db['tables'] as $table_key => $table) {
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// check if id is table and has alias
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if (stripos($type, 'tbl') !== false && $table_key === $id && ! empty($table['alias'])) {
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return $table['alias'];
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}
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if (empty($table['columns'])) {
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continue;
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}
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// search each of its columns
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foreach ($table['columns'] as $col_key => $col) {
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// check if id is column
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if (stripos($type, 'col') !== false && $col_key === $id && ! empty($col)) {
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return $col;
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}
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}
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}
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}
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return '';
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}
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/**
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* Gives the relation string and
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* also substitutes with alias if required
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* in this format:
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* [Foreign Table] ([Foreign Field])
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*
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* @param array $foreigners the foreigners array
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* @param string $fieldName the field name
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* @param string $db the field name
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* @param array $aliases Alias information for db/table/column
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*
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* @return string the Relation string
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*/
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public function getRelationString(
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array $foreigners,
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$fieldName,
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$db,
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array $aliases = []
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) {
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$relation = '';
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$foreigner = $this->relation->searchColumnInForeigners($foreigners, $fieldName);
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if ($foreigner) {
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$ftable = $foreigner['foreign_table'];
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$ffield = $foreigner['foreign_field'];
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if (! empty($aliases[$db]['tables'][$ftable]['columns'][$ffield])) {
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$ffield = $aliases[$db]['tables'][$ftable]['columns'][$ffield];
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}
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if (! empty($aliases[$db]['tables'][$ftable]['alias'])) {
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$ftable = $aliases[$db]['tables'][$ftable]['alias'];
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}
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$relation = $ftable . ' (' . $ffield . ')';
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}
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return $relation;
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}
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public static function isAvailable(): bool
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{
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return true;
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}
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}
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