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<?php |
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namespace Avoran\RapidoAdapter\DoctrineDbalStorage; |
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use Avoran\Rapido\ReadModel\DataType\DateTime; |
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use Doctrine\DBAL\Schema\AbstractSchemaManager; |
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use Doctrine\DBAL\Schema\Comparator; |
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use Doctrine\DBAL\Schema\Table; |
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use Avoran\Rapido\ReadModel\ReadModelConfiguration; |
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use Avoran\Rapido\ReadModel\ReadModelField; |
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class SchemaSynchronizer |
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{ |
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private $schemaManager; |
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private $schemaComparator; |
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private $tableNameGenerator; |
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private $idColumnName; |
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private $columnFactory; |
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public function __construct |
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( |
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AbstractSchemaManager $schemaManager, |
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Comparator $schemaComparator, |
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NameGenerator $tableNameGenerator, |
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$idColumnName, |
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ColumnFactory $columnFactory |
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) |
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{ |
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$this->schemaManager = $schemaManager; |
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$this->schemaComparator = $schemaComparator; |
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$this->tableNameGenerator = $tableNameGenerator; |
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$this->idColumnName = $idColumnName; |
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$this->columnFactory = $columnFactory; |
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} |
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public function ensureTableExists(ReadModelConfiguration $metadata) |
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{ |
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$table = $this->generateTable($metadata); |
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$table->setPrimaryKey([$this->idColumnName]); |
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$this->updateTable($table); |
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if (!$metadata->generateSnapshot()) return; |
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$table = $this->generateTable($metadata, true); |
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$table->setPrimaryKey([$this->idColumnName, $metadata->getSnapshotColumnName()]); |
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$this->updateTable($table); |
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} |
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private function generateTable(ReadModelConfiguration $metadata, $snapshot = false) |
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{ |
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$predefinedColumns = [$this->columnFactory->createColumn($metadata->getId()->getDataType(), $this->idColumnName)]; |
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$name = $this->tableNameGenerator->generate($metadata->getName()); |
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if ($snapshot) { |
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$predefinedColumns[] = $this->columnFactory->createColumn(new DateTime(), $metadata->getSnapshotColumnName()); |
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$name = $this->tableNameGenerator->generateWithSuffix($metadata->getName()); |
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} |
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return new Table($name, |
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array_merge($predefinedColumns, array_map(function(ReadModelField $field) { |
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return $this->columnFactory->createColumn($field->getDataType(), $field->getId()); |
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}, $metadata->getFields())) |
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); |
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} |
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private function updateTable(Table $table) |
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{ |
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$existingTables = array_filter( |
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$this->schemaManager->listTables(), |
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function(Table $existingTable) use ($table) { return $table->getName() == $existingTable->getName(); } |
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); |
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if (count($existingTables) > 1) |
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throw new \UnexpectedValueException(sprintf("Multiple tables with the name '%s' exist.", $table->getName())); |
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if (count($existingTables) == 1) { |
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$tableDiff = $this->schemaComparator->diffTable(current($existingTables), $table); |
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if ($tableDiff) |
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$this->schemaManager->alterTable($tableDiff); |
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} else { |
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$this->schemaManager->createTable($table); |
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} |
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} |
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} |
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Avoran /
Rapido
