Yiisoft\Db\Mssql\Schema::findColumns()

Complexity

Conditions	10
Paths	36

Size

Total Lines	83
Code Lines	61

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	21
CRAP Score	10.0658

Importance

Changes	3
Bugs	0	Features	0

<?php
    protected function findColumns(TableSchemaInterface $table): bool
    {
        $columnsTableName = 'INFORMATION_SCHEMA.COLUMNS';

        $whereParams = [':table_name' => $table->getName()];
        $whereSql = '[t1].[table_name] = :table_name';

        if ($table->getCatalogName() !== null) {
            $columnsTableName = "{$table->getCatalogName()}.$columnsTableName";
            $whereSql .= ' AND [t1].[table_catalog] = :catalog';
            $whereParams[':catalog'] = $table->getCatalogName();
        }

        if ($table->getSchemaName() !== null) {
            $whereSql .= " AND [t1].[table_schema] = '{$table->getSchemaName()}'";
        }

        $columnsTableName = $this->db->getQuoter()->quoteTableName($columnsTableName);

        $sql = <<<SQL
        SELECT
            [t1].[column_name],
            [t1].[is_nullable],
        CASE WHEN [t1].[data_type] IN ('char','varchar','nchar','nvarchar','binary','varbinary') THEN
        CASE WHEN [t1].[character_maximum_length] = NULL OR [t1].[character_maximum_length] = -1 THEN
            [t1].[data_type]
        ELSE
            [t1].[data_type] + '(' + LTRIM(RTRIM(CONVERT(CHAR,[t1].[character_maximum_length]))) + ')'
        END
        WHEN [t1].[data_type] IN ('decimal','numeric') THEN
        CASE WHEN [t1].[numeric_precision] = NULL OR [t1].[numeric_precision] = -1 THEN
            [t1].[data_type]
        ELSE
            [t1].[data_type] + '(' + LTRIM(RTRIM(CONVERT(CHAR,[t1].[numeric_precision]))) + ',' + LTRIM(RTRIM(CONVERT(CHAR,[t1].[numeric_scale]))) + ')'
        END
        ELSE
            [t1].[data_type]
        END AS 'data_type',
        [t1].[column_default],
        COLUMNPROPERTY(OBJECT_ID([t1].[table_schema] + '.' + [t1].[table_name]), [t1].[column_name], 'IsIdentity') AS is_identity,
        COLUMNPROPERTY(OBJECT_ID([t1].[table_schema] + '.' + [t1].[table_name]), [t1].[column_name], 'IsComputed') AS is_computed,
        (
        SELECT CONVERT(VARCHAR, [t2].[value])
        FROM [sys].[extended_properties] AS [t2]
        WHERE
        [t2].[class] = 1 AND
        [t2].[class_desc] = 'OBJECT_OR_COLUMN' AND
        [t2].[name] = 'MS_Description' AND
        [t2].[major_id] = OBJECT_ID([t1].[TABLE_SCHEMA] + '.' + [t1].[table_name]) AND
        [t2].[minor_id] = COLUMNPROPERTY(OBJECT_ID([t1].[TABLE_SCHEMA] + '.' + [t1].[TABLE_NAME]), [t1].[COLUMN_NAME], 'ColumnID')
        ) as comment
        FROM $columnsTableName AS [t1]
        WHERE $whereSql
        SQL;

        try {
            /** @psalm-var ColumnArray[] $columns */
            $columns = $this->db->createCommand($sql, $whereParams)->queryAll();

            if (empty($columns)) {
                return false;
            }
        } catch (Exception) {
            return false;
        }

        foreach ($columns as $column) {
            $column = $this->loadColumnSchema($column);
            foreach ($table->getPrimaryKey() as $primaryKey) {
                if (strcasecmp($column->getName(), $primaryKey) === 0) {
                    $column->primaryKey(true);
                    break;
                }
            }

            if ($column->isPrimaryKey() && $column->isAutoIncrement()) {
                $table->sequenceName('');
            }

            $table->column($column->getName(), $column);
        }

        return true;
    }