public static string CreateByType(IDbCommand command, BinaryExpression exp, EntityStruct obj)
{
var type = obj.Key;
var tableName = CommonCommandBuilder.GetTableName(type);
var cmdBulder = new StringBuilder(string.Format(@" UPDATE [{0}].[{1}].[{2}] ", command.Connection.Database, CommonCommandBuilder.DbSchemaName, tableName));
var nameValuePairs = CommonCommandBuilder.FieldByValueClauseBuilder(type, obj.Value);
var parameterizatedNames = nameValuePairs.Select(
x =>
new KeyValuePair <string, string>(x.Key, CommonCommandBuilder.GetParamsFormat(x.Key, x.Value, command.Connection.Database))
);
foreach (var pair in nameValuePairs)
{
var prop = CommonCommandBuilder.GetPropertyByAttrName(type, pair.Key);
var parameter = command.CreateParameter();
parameter.ParameterName = CommonCommandBuilder.GetParamsFormat(pair.Key, pair.Value, command.Connection.Database);
parameter.DbType = TypeMap[prop.PropertyType];
parameter.Value = pair.Value;
if (!command.Parameters.Contains(parameter.ParameterName))
{
command.Parameters.Add(parameter);
}
}
var updateClause = string.Join(",", parameterizatedNames.Select(x => string.Format(" [{0}].[{1}] = {2}", tableName, x.Key, x.Value)));
cmdBulder.Append(string.Format(" SET {0} WHERE {1}", updateClause.Trim(','),
CommonCommandBuilder.BuildClauseByExpression(command, type, exp)));
return(cmdBulder.ToString());
}
public static string Create <T>(IDbCommand command, BinaryExpression exp)
where T : class, IEntity, new()
{
var type = typeof(T);
var selectBody = CreateBody(command.Connection.Database, type);
return(string.Format("{0} WHERE {1}", selectBody, CommonCommandBuilder.BuildClauseByExpression(command, type, exp)));
}
private static string CreateByType(IDbCommand command, BinaryExpression exp, Type type)
{
var tableName = CommonCommandBuilder.GetTableName(type);
var cmdBulder = new StringBuilder(
string.Format(@" DELETE FROM [{0}].[{1}].[{2}] ",
command.Connection.Database, CommonCommandBuilder.DbSchemaName, tableName));
cmdBulder.Append(string.Format(" WHERE {0}", CommonCommandBuilder.BuildClauseByExpression(command, type, exp)));
return(cmdBulder.ToString());
}
