How to generate model from database using Dapper?

Question

I am coming from PetaPoco camp. PetaPoco has a T4 template which generates model from the database. Is anything similar available for Dapper?

I installed Dapper usi

Answer 1

Try this version I optimized a bit, so that the result doesn't need to be piped to Text output. Instead, the PRINT statement allows the output to be copy/pasted easily. I've also removed the subquery and added declarations for nvarchar/ntext types.

This is for a single table, but it can be converted to a stored proc to use one of the cursor suggestions above.

SET NOCOUNT ON
DECLARE @tbl as varchar(255)
SET @tbl = '@@@@'

DECLARE @flds as varchar(8000)
SET @flds=''

SELECT -1 as f0, 'public class ' + @tbl + ' {' as f1 into #tmp

INSERT #tmp
SELECT 
    ORDINAL_POSITION, 
    '    public ' + 
    CASE 
        WHEN DATA_TYPE = 'varchar' THEN 'string'
        WHEN DATA_TYPE = 'nvarchar' THEN 'string'
        WHEN DATA_TYPE = 'text' THEN 'string'
        WHEN DATA_TYPE = 'ntext' THEN 'string'
        WHEN DATA_TYPE = 'char' THEN 'string'
        WHEN DATA_TYPE = 'xml' THEN 'string'
        WHEN DATA_TYPE = 'datetime' AND IS_NULLABLE = 'NO' THEN 'DateTime'
        WHEN DATA_TYPE = 'datetime' AND IS_NULLABLE = 'YES' THEN 'DateTime?'
        WHEN DATA_TYPE = 'int' AND IS_NULLABLE = 'YES' THEN 'int?'
        WHEN DATA_TYPE = 'int' AND IS_NULLABLE = 'NO' THEN 'int'
        WHEN DATA_TYPE = 'smallint' AND IS_NULLABLE = 'NO' THEN 'Int16'
        WHEN DATA_TYPE = 'smallint' AND IS_NULLABLE = 'YES' THEN 'Int16?'
        WHEN DATA_TYPE = 'decimal' AND IS_NULLABLE = 'NO' THEN 'decimal'
        WHEN DATA_TYPE = 'decimal' AND IS_NULLABLE = 'YES' THEN 'decimal?'
        WHEN DATA_TYPE = 'numeric' AND IS_NULLABLE = 'NO' THEN 'decimal'
        WHEN DATA_TYPE = 'numeric' AND IS_NULLABLE = 'YES' THEN 'decimal?'
        WHEN DATA_TYPE = 'money' AND IS_NULLABLE = 'NO' THEN 'decimal'
        WHEN DATA_TYPE = 'money' AND IS_NULLABLE = 'YES' THEN 'decimal?'
        WHEN DATA_TYPE = 'bigint' AND IS_NULLABLE = 'NO' THEN 'long'
        WHEN DATA_TYPE = 'bigint' AND IS_NULLABLE = 'YES' THEN 'long?'
        WHEN DATA_TYPE = 'tinyint' AND IS_NULLABLE = 'NO' THEN 'byte'
        WHEN DATA_TYPE = 'tinyint' AND IS_NULLABLE = 'YES' THEN 'byte?'
        WHEN DATA_TYPE = 'timestamp' THEN 'byte[]'
        WHEN DATA_TYPE = 'varbinary' THEN 'byte[]'
        WHEN DATA_TYPE = 'bit' AND IS_NULLABLE = 'NO' THEN 'bool'
        WHEN DATA_TYPE = 'bit' AND IS_NULLABLE = 'YES' THEN 'bool?'
    END + ' ' + COLUMN_NAME + ' {get;set;}'
FROM INFORMATION_SCHEMA.COLUMNS 
        WHERE TABLE_NAME = @tbl

INSERT #tmp SELECT 999, '}'

SELECT @flds=@flds + f1 +'
' from #tmp order by f0

DROP TABLE #tmp

PRINT @flds