mirror of
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547 lines
21 KiB
PHP
547 lines
21 KiB
PHP
<?php
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declare(strict_types=1);
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namespace Xentral\Components\SchemaCreator\Adapter\Driver;
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use Exception;
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use Xentral\Components\Database\Exception\EscapingException;
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use Xentral\Components\SchemaCreator\Collection\ColumnCollection;
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use Xentral\Components\SchemaCreator\Collection\IndexCollection;
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use Xentral\Components\SchemaCreator\Collection\TableOptionCollection;
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use Xentral\Components\SchemaCreator\Exception\SchemaCreatorInvalidArgumentException;
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use Xentral\Components\SchemaCreator\Index\Constraint;
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use Xentral\Components\SchemaCreator\Index\Index;
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use Xentral\Components\SchemaCreator\Index\Primary;
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use Xentral\Components\SchemaCreator\Index\Unique;
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use Xentral\Components\SchemaCreator\Interfaces\PrimaryKeyInterface;
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use Xentral\Components\SchemaCreator\Interfaces\ColumnInterface;
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use Xentral\Components\SchemaCreator\Interfaces\IndexInterface;
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use Xentral\Components\SchemaCreator\Interfaces\DriverInterface;
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use Xentral\Components\SchemaCreator\LineGenerator\Common\ColumnLineGenerator;
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use Xentral\Components\SchemaCreator\LineGenerator\Common\ConstraintLineGenerator;
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use Xentral\Components\SchemaCreator\LineGenerator\Common\IndexLineGenerator;
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use Xentral\Components\SchemaCreator\LineGenerator\Common\TableOptionsGenerator;
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use Xentral\Components\SchemaCreator\Option\TableOption;
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use Xentral\Components\SchemaCreator\Schema\TableSchema;
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final class MysqlDriver implements DriverInterface
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{
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/** @var ColumnLineGenerator $columnGenerator */
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private $columnGenerator;
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/** @var IndexLineGenerator $indexGenerator */
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private $indexGenerator;
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/** @var TableOptionsGenerator $tableOptionsGenerator */
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private $tableOptionsGenerator;
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/** @var ConstraintLineGenerator $constraintGenerator */
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private $constraintGenerator;
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/**
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* @param ColumnLineGenerator $columnGenerator
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* @param IndexLineGenerator $indexGenerator
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* @param TableOptionsGenerator $tableOptionsGenerator
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* @param ConstraintLineGenerator $constraintLineGenerator
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*/
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public function __construct(
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ColumnLineGenerator $columnGenerator,
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IndexLineGenerator $indexGenerator,
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TableOptionsGenerator $tableOptionsGenerator,
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ConstraintLineGenerator $constraintLineGenerator
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) {
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$this->columnGenerator = $columnGenerator;
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$this->indexGenerator = $indexGenerator;
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$this->tableOptionsGenerator = $tableOptionsGenerator;
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$this->constraintGenerator = $constraintLineGenerator;
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}
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/**
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* @param ColumnCollection $columnCollection
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* @param IndexCollection $indexCollection
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*
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* @throws Exception
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* @return string
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*/
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private function generateTableColumns(ColumnCollection $columnCollection, IndexCollection $indexCollection): string
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{
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$columnDefinitions = [];
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$hasAutoIncrement = $columnCollection->hasAutoIncrement();
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$autoIncrementColumn = $columnCollection->getAutoIncrementColumn();
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foreach ($columnCollection as $column) {
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$columnDefinitions[] = $this->columnGenerator->generateLine($column);
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$isFieldAsAutoIncrement = $hasAutoIncrement === true && $autoIncrementColumn->getField(
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) === $column->getField();
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if ($indexCollection !== null && $isFieldAsAutoIncrement === true && $indexCollection->hasPrimaryKey(
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) === false) {
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$primaryRef = $column->getField();
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$indexCollection->add(new Primary([$primaryRef]));
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$columnCollection->getIterator()->rewind();
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}
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}
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return implode(",\n", $columnDefinitions);
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}
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/**
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* @param IndexCollection $indexCollection
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* @param ColumnCollection $targetColumns
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*
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* @throws EscapingException
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*
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* @return string
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*/
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private function generateTableIndexes(IndexCollection $indexCollection, ColumnCollection $targetColumns): string
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{
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$asIndexes = [];
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foreach ($indexCollection as $tableIndex) {
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/** @var IndexInterface $tableIndex */
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if ($this->hasIndexReferencesInSchema($tableIndex->getReferences(), $targetColumns)) {
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$asIndexes [] = $this->indexGenerator->generateLine($tableIndex);
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}
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}
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return implode(",\n", $asIndexes);
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}
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/**
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* @param TableOptionCollection $tableOptionCollection
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*
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* @throws EscapingException
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*
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* @return string
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*/
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private function generateTableOptions(TableOptionCollection $tableOptionCollection): string
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{
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$tableOptions = [];
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foreach ($tableOptionCollection as $tableOption) {
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/** @var TableOption $tableOption */
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$tableOptions[$tableOption->getOption()] = $tableOption->getValue();
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}
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return $this->tableOptionsGenerator->generate($tableOptions);
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}
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/**
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* @inheritDoc
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*/
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public function loadFromTable(string $table): TableSchema
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{
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$tableSchema = new TableSchema($table);
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if ($columns = $this->columnGenerator->fetchColumnsFromDb($table)) {
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foreach ($columns as $column) {
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$type = strtolower($column['type']);
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$type = $type === 'int' ? 'integer' : $type; //Cannot use 'Int' as class name as it is reserved
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$type = $type === 'float' ? 'double' : $type; //Cannot use 'Float' as class name as it is reserved
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$classType = '\\Xentral\\Components\\SchemaCreator\\Type\\' . ucfirst($type);
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if (!class_exists($classType)) {
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throw new SchemaCreatorInvalidArgumentException(sprintf('%s cannot be found', $classType));
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}
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if (!method_exists($classType, 'fromDBColumn')) {
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throw new SchemaCreatorInvalidArgumentException(
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sprintf('Method %s::fromDBColumn not found', $classType)
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);
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}
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if (is_numeric($column['default']) && $this->hasImplemented($classType, 'NumericTypeInterface')) {
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$column['default'] = (int)$column['default'];
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}
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if ($this->hasImplemented($classType, 'EnumAndSetInterface')) {
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$column['references'] = explode(',', $column['references']);
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}
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$callback = call_user_func($classType . '::fromDBColumn', $column);
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$tableSchema->addColumn($callback);
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}
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}
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if ($indexes = $this->indexGenerator->fetchIndexesFromDb($table)) {
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$constraints = $this->constraintGenerator->fetchConstraintsFromDb($table);
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foreach ($indexes as $index) {
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if ($index['name'] === PrimaryKeyInterface::INDEX_NAME) {
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$tableSchema->addIndex(new Primary($index['columns']));
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} elseif ( ($constraintKey = array_search($index['name'], array_column($constraints, 'name'), true)) !== false) {
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$tableIndex = new Constraint(
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$constraints[$constraintKey]['name'],
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$constraints[$constraintKey]['columns'],
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$constraints[$constraintKey]['reference_table'],
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$constraints[$constraintKey]['reference_columns']
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);
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$tableSchema->addIndex($tableIndex);
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} else {
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$tableIndex = $index['unique'] === true ? new Unique($index['columns'], $index['name']) : new Index(
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$index['columns'], $index['name']
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);
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$tableSchema->addIndex($tableIndex);
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}
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}
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}
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if ($options = $this->tableOptionsGenerator->fetchOptionsFromDb($table)) {
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$tableSchema->addOption(TableOption::fromEngine($options['engine']));
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$tableSchema->addOption(TableOption::fromCharset($options['table_charset']));
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$tableSchema->addOption(TableOption::fromCollation($options['collation']));
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$tableSchema->addOption(TableOption::fromComment($options['comment']));
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}
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return $tableSchema;
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}
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/**
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* @param string $class
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* @param string $needleInterface
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*
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* @return bool
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*/
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private function hasImplemented(string $class, string $needleInterface): bool
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{
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if ($interfaces = class_implements($class)) {
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foreach ($interfaces as $interface) {
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$interface_exploded = explode('\\', $interface);
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$name = array_pop($interface_exploded);
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if ($name === $needleInterface) {
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return true;
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}
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}
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}
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return false;
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}
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/**
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* @param array $references
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* @param ColumnCollection $targetColumns
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*
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* @return bool
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*/
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private function hasIndexReferencesInSchema(array $references, ColumnCollection $targetColumns): bool
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{
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$columns = [];
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foreach ($targetColumns as $configuredColumns) {
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$columns[] = $configuredColumns->getField();
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}
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foreach ($references as $reference) {
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if (!in_array(sprintf('%s', $reference), $columns, true)) {
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throw new SchemaCreatorInvalidArgumentException(
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sprintf('Column name `%s` missing in the table', $reference)
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);
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}
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}
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return true;
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}
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/**
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* @param array $targetSchema
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* @param array $currentSchema
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*
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* @return bool
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*/
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private function checkColumnNeedsUpdate(array $targetSchema, array $currentSchema): bool
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{
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$diff = array_diff_assoc($targetSchema, $currentSchema);
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return count($diff) > 0;
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}
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/**
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* @param TableSchema $currentSchema
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* @param TableSchema $targetSchema
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*
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* @throws EscapingException
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*
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* @return string
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*/
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private function generateColumnsDiff(TableSchema $currentSchema, TableSchema $targetSchema): string
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{
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$alterColumnParts = [];
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$targetColumns = $targetSchema->getColumns();
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$currentColumns = $currentSchema->getColumns();
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$currentIndexes = $currentSchema->getIndexes();
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$hasAutoIncrement = $currentColumns->hasAutoIncrement();
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$autoIncrementColumn = $currentColumns->getAutoIncrementColumn();
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foreach ($currentColumns as $schemaKey => $currentColumn) {
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$isFieldAsAutoIncrement = $hasAutoIncrement === true && $autoIncrementColumn->getField(
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) === $currentColumn->getField();
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if ($currentIndexes !== null && $isFieldAsAutoIncrement === true && $currentIndexes->hasPrimaryKey(
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) === false) {
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$primaryReference = $currentColumn->getField();
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$currentIndexes->add(new Primary([$primaryReference]));
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}
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}
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$targetFields = $targetColumns->getFields();
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$currentFields = $currentColumns->getFields();
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$newFields = array_diff($targetFields, $currentFields);
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foreach ($targetColumns as $schemaKey => $schemaColumn) {
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/** @var ColumnInterface $schemaColumn */
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$field = $schemaColumn->getField();
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if (in_array($field, $newFields, true)) {
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$alterColumnParts[] = sprintf('ADD %s', $this->columnGenerator->generateLine($schemaColumn));
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} else {
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$needsUpdate = $this->checkColumnNeedsUpdate(
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$this->columnGenerator->toArray($schemaColumn),
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$this->columnGenerator->toArray($currentSchema->getColumnByName($field))
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);
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if ($needsUpdate) {
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$alterColumnParts[] = sprintf('MODIFY %s', $this->columnGenerator->generateLine($schemaColumn));
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}
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}
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}
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return implode(', ', $alterColumnParts);
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}
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/**
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* @param IndexInterface $targetIndex
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* @param IndexInterface $currentIndex
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*
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* @return bool
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*/
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private function checkIndexNeedsUpdate(IndexInterface $targetIndex, IndexInterface $currentIndex): bool
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{
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$targetReferences = $targetIndex->getReferences();
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$currentReferences = $currentIndex->getReferences();
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if ($targetIndex->isUnique() !== $currentIndex->isUnique()) {
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return true;
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}
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$diffColumns = array_diff($targetReferences, $currentReferences);
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return count($diffColumns) > 0;
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}
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/**
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* @param TableSchema $currentSchema
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* @param TableSchema $targetSchema
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*
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* @throws Exception
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* @return string
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*/
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private function generateIndexesDiff(TableSchema $currentSchema, TableSchema $targetSchema): string
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{
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$alterIndexParts = [];
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$targetIndexes = $targetSchema->getIndexes();
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$currentIndexes = $currentSchema->getIndexes();
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$targetColumns = $targetSchema->getColumns();
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// FIX MISSING PRIMARY KEY HERE
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$this->generateTableColumns($targetColumns, $targetIndexes);
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$targetIndexNames = $targetIndexes->getIndexNames();
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$currentIndexNames = $currentIndexes->getIndexNames();
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$newIndexes = array_diff($targetIndexNames, $currentIndexNames);
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$removedIndexes = array_diff($currentIndexNames, $targetIndexNames);
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if (count($removedIndexes) > 0) {
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foreach ($removedIndexes as $removedIndexName) {
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if ($removedIndexName !== 'PRIMARY' && !in_array($removedIndexName, $newIndexes, true)) {
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foreach($currentIndexes as $currentIndex) {
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if($currentIndex->getName() !== $removedIndexName) {
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continue;
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}
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if($currentIndex->getType() === 'CONSTRAINT') {
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$alterIndexParts[] = sprintf('DROP FOREIGN KEY %s', $this->indexGenerator->escape($removedIndexName));
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break;
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}
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else {
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$alterIndexParts[] = sprintf('DROP INDEX %s', $this->indexGenerator->escape($removedIndexName));
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break;
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}
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}
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}
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}
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}
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foreach ($targetIndexes as $schemaKey => $schemaIndex) {
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$indexName = $schemaIndex->getName();
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$indexType = $schemaIndex->getType();
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if (in_array($indexName, $newIndexes, true) &&
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$this->hasIndexReferencesInSchema($schemaIndex->getReferences(), $targetColumns) === true) {
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$alterIndexParts[] = sprintf('ADD %s', $this->indexGenerator->generateLine($schemaIndex));
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} else {
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$needsUpdate = $this->checkIndexNeedsUpdate($schemaIndex, $currentSchema->getIndexByName($indexName));
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if ($needsUpdate) {
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if ($schemaIndex instanceof PrimaryKeyInterface) {
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$references = $schemaIndex->getReferences();
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// CHECK IF one of the reference has AutoIncrement
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$currentPrimary = $currentSchema->getIndexByName('PRIMARY');
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if (null !== $currentPrimary) {
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$currentReferences = $currentPrimary->getReferences();
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$columnModified = null;
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foreach ($currentReferences as $columnName) {
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$column = $currentSchema->getColumnByName($columnName);
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$options = $column->getOptions();
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if (array_key_exists('extra', $options) && in_array(
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$options['extra'],
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['ai', 'AUTO_INCREMENT']
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)) {
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$columnModified = sprintf(
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'MODIFY %s',
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$this->columnGenerator->generateLine($column)
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);
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$columnModifiedWithoutAi = str_replace('AUTO_INCREMENT', '', $columnModified);
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$alterIndexParts[] = trim($columnModifiedWithoutAi);
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break;
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}
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}
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$alterIndexParts[] = 'DROP PRIMARY KEY';
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}
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$reference = implode(
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',',
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array_map(
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function ($reference) {
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return $this->indexGenerator->escape($reference);
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},
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$references
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)
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);
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$alterIndexParts[] = sprintf('ADD PRIMARY KEY (%s)', $reference);
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} else {
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if($indexType === 'CONSTRAINT') {
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$alterIndexParts[] = sprintf('DROP FOREIGN KEY %s', $this->indexGenerator->escape($indexName));
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}
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else {
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$alterIndexParts[] = sprintf('DROP INDEX %s', $this->indexGenerator->escape($indexName));
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}
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$alterIndexParts[] = sprintf('ADD %s', $this->indexGenerator->generateLine($schemaIndex));
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}
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}
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}
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}
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return implode(', ', $alterIndexParts);
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}
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/**
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* @param TableSchema $currentSchema
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* @param TableSchema $targetSchema
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*
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* @throws Exception
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* @return string
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*/
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private function generateOptionsDiff(TableSchema $currentSchema, TableSchema $targetSchema): string
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{
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$targetOptions = $targetSchema->getOptions();
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if ($targetOptions->getIterator()->count() === 0) {
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return '';
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}
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$currentOptions = $currentSchema->getOptions();
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$sqlOptions = [];
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$charset = null;
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foreach ($targetOptions as $option) {
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$currentTableOption = $currentOptions->getTableOption($option->getOption());
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if ($currentTableOption === null || $currentTableOption->getValue() !== $option->getValue()) {
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if ($option->getOption() === 'collation' && ($charsetOption = $currentOptions->getTableOption(
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'charset'
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))) {
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$charset = $charsetOption->getValue();
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}
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$sqlOptions[] = $this->tableOptionsGenerator->alterOptions($option, $charset);
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}
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}
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return implode(' ', $sqlOptions);
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}
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/**
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* @inheritDoc
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*/
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public function getTableDefinition(TableSchema $schema): string
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{
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$name = $schema->getTable();
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$columns = $this->generateTableColumns(
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$schema->getColumns(),
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$schema->getIndexes()
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);
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$keys = $this->generateTableIndexes($schema->getIndexes(), $schema->getColumns());
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$columns = rtrim($columns, ',');
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if (!empty($keys)) {
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$keys = ',' . PHP_EOL . $keys;
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}
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$definition = sprintf("(\n%s\n)", $columns . $keys);
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$defFooter = $this->generateTableOptions($schema->getOptions());
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$definition .= $defFooter;
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return sprintf('CREATE TABLE IF NOT EXISTS %s %s', $this->indexGenerator->escape($name), $definition);
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}
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/**
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* @param string $table
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*
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* @throws EscapingException
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*
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* @return string
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*/
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private function generateAlterTable(string $table): string
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{
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return sprintf('ALTER TABLE %s ', $this->indexGenerator->escape($table));
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}
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/**
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* @inheritDoc
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*/
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public function generateTableSchemaDiff(TableSchema $currentSchema, TableSchema $targetSchema): string
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{
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$sql = '';
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$alterColumns = $this->generateColumnsDiff($currentSchema, $targetSchema);
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$alterIndexes = $this->generateIndexesDiff($currentSchema, $targetSchema);
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$alterOptions = $this->generateOptionsDiff($currentSchema, $targetSchema);
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if (empty($alterColumns) && empty($alterIndexes) && empty($alterOptions)) {
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return $sql;
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}
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if (!empty($alterColumns)) {
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$sql .= $alterColumns . ', ';
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}
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if (!empty($alterIndexes)) {
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$sql .= $alterIndexes . ', ';
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}
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$table = $targetSchema->getTable();
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$alterTable = $this->generateAlterTable($table);
|
|
if (!empty($alterOptions)) {
|
|
$alterTable .= $alterOptions;
|
|
if (!empty($sql)) {
|
|
$alterTable .= ', ';
|
|
}
|
|
}
|
|
|
|
$sql = substr_replace($sql, ';', -2);
|
|
|
|
return $alterTable . $sql;
|
|
}
|
|
|
|
}
|