Using Dapper QueryMultiple in Oracle

Question

I´m trying to use dapper with Oracle (ODP.NET) and I would like to use the \"QueryMultiple\" functionality.

Passing this string to the QueryMultiple method:

Answer 1

Building on greyseal96's helpful answer, I created this implementation of IDynamicParameters:

public class OracleDynamicParameters : SqlMapper.IDynamicParameters
{
    private readonly DynamicParameters dynamicParameters;

    private readonly List oracleParameters = new List();

    public OracleDynamicParameters(params string[] refCursorNames) {
        dynamicParameters = new DynamicParameters();
        AddRefCursorParameters(refCursorNames);
    }

    public OracleDynamicParameters(object template, params string[] refCursorNames) {
        dynamicParameters = new DynamicParameters(template);
        AddRefCursorParameters(refCursorNames);
    }

    private void AddRefCursorParameters(params string[] refCursorNames)
    {
        foreach (string refCursorName in refCursorNames)
        {
            var oracleParameter = new OracleParameter(refCursorName, OracleDbType.RefCursor, ParameterDirection.Output);
            oracleParameters.Add(oracleParameter);
        }
    }

    public void AddParameters(IDbCommand command, SqlMapper.Identity identity)
    {
        ((SqlMapper.IDynamicParameters)dynamicParameters).AddParameters(command, identity);
        var oracleCommand = command as OracleCommand;
        if (oracleCommand != null)
        {
            oracleCommand.Parameters.AddRange(oracleParameters.ToArray());
        }
    }
}

Assuming the same query, it can be used so:

var queryParams = new { id };
string[] refCursorNames = { "rslt1", "rslt2", "rslt3" };
var dynParams = new OracleDynamicParameters(queryParams, refCursorNames);
...
var multi = dbConn.QueryMultiple(sql, param: dynParams);