Code Duplication    Length = 23-38 lines in 4 locations

src/Phinx/Db/Adapter/SqlServerAdapter.php 2 locations

@@ 682-704 (lines=23) @@
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    /**
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     * {@inheritdoc}
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     */
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    public function dropIndex($tableName, $columns)
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    {
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        if (is_string($columns)) {
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            $columns = [$columns]; // str to array
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        }
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        $indexes = $this->getIndexes($tableName);
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        $columns = array_map('strtolower', $columns);
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        foreach ($indexes as $indexName => $index) {
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            $a = array_diff($columns, $index['columns']);
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            if (empty($a)) {
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                $this->execute(
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                    sprintf(
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                        'DROP INDEX %s ON %s',
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                        $this->quoteColumnName($indexName),
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                        $this->quoteTableName($tableName)
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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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    }
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    /**
@@ 806-843 (lines=38) @@
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    /**
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     * {@inheritdoc}
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     */
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    public function dropForeignKey($tableName, $columns, $constraint = null)
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    {
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        if (is_string($columns)) {
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            $columns = [$columns]; // str to array
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        }
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        if ($constraint) {
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            $this->execute(
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                sprintf(
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                    'ALTER TABLE %s DROP CONSTRAINT %s',
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                    $this->quoteTableName($tableName),
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                    $constraint
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                )
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            );
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            return;
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        } else {
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            foreach ($columns as $column) {
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                $rows = $this->fetchAll(sprintf(
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                    "SELECT
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                    tc.constraint_name,
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                    tc.table_name, kcu.column_name,
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                    ccu.table_name AS referenced_table_name,
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                    ccu.column_name AS referenced_column_name
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                FROM
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                    information_schema.table_constraints AS tc
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                    JOIN information_schema.key_column_usage AS kcu ON tc.constraint_name = kcu.constraint_name
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                    JOIN information_schema.constraint_column_usage AS ccu ON ccu.constraint_name = tc.constraint_name
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                WHERE constraint_type = 'FOREIGN KEY' AND tc.table_name = '%s' and ccu.column_name='%s'
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                ORDER BY kcu.ordinal_position",
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                    $tableName,
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                    $column
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                ));
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                foreach ($rows as $row) {
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                    $this->dropForeignKey($tableName, $columns, $row['constraint_name']);
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                }
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            }
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        }
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    }
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    /**

src/Phinx/Db/Adapter/MysqlAdapter.php 1 location

@@ 656-691 (lines=36) @@
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    /**
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     * {@inheritdoc}
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     */
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    public function dropForeignKey($tableName, $columns, $constraint = null)
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    {
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        if (is_string($columns)) {
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            $columns = [$columns]; // str to array
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        }
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        if ($constraint) {
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            $this->execute(
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                sprintf(
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                    'ALTER TABLE %s DROP FOREIGN KEY %s',
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                    $this->quoteTableName($tableName),
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                    $constraint
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                )
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            );
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            return;
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        } else {
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            foreach ($columns as $column) {
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                $rows = $this->fetchAll(sprintf(
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                    "SELECT
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                        CONSTRAINT_NAME
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                      FROM information_schema.KEY_COLUMN_USAGE
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                      WHERE REFERENCED_TABLE_SCHEMA = DATABASE()
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                        AND REFERENCED_TABLE_NAME IS NOT NULL
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                        AND TABLE_NAME = '%s'
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                        AND COLUMN_NAME = '%s'
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                      ORDER BY POSITION_IN_UNIQUE_CONSTRAINT",
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                    $tableName,
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                    $column
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                ));
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                foreach ($rows as $row) {
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                    $this->dropForeignKey($tableName, $columns, $row['CONSTRAINT_NAME']);
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                }
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            }
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        }
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    }
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    /**
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     * {@inheritdoc}

src/Phinx/Db/Adapter/PostgresAdapter.php 1 location

@@ 699-732 (lines=34) @@
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    /**
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     * {@inheritdoc}
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     */
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    public function dropForeignKey($tableName, $columns, $constraint = null)
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    {
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        if (is_string($columns)) {
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            $columns = [$columns]; // str to array
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        }
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        if ($constraint) {
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            $this->execute(
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                sprintf(
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                    'ALTER TABLE %s DROP CONSTRAINT %s',
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                    $this->quoteTableName($tableName),
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                    $constraint
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                )
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            );
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        } else {
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            foreach ($columns as $column) {
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                $rows = $this->fetchAll(sprintf(
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                    "SELECT CONSTRAINT_NAME
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                      FROM information_schema.KEY_COLUMN_USAGE
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                      WHERE TABLE_SCHEMA = CURRENT_SCHEMA()
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                        AND TABLE_NAME IS NOT NULL
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                        AND TABLE_NAME = '%s'
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                        AND COLUMN_NAME = '%s'
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                      ORDER BY POSITION_IN_UNIQUE_CONSTRAINT",
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                    $tableName,
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                    $column
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                ));
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                foreach ($rows as $row) {
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                    $this->dropForeignKey($tableName, $columns, $row['constraint_name']);
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                }
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            }
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        }
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    }
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    /**
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     * {@inheritdoc}