wn/genericdatabaseapiservice
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with and without parameters works

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This commit is contained in:
Wolfgang Hottgenroth
2021-11-25 14:49:08 +01:00
parent 66d222e0bf
commit 10c3cab432
5 changed files with 163 additions and 88 deletions
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44
DbService.cs
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@ -1,3 +1,5 @@
#pragma warning disable 1591
using System;
using System.Collections.Generic;
using System.Runtime.Serialization;
@ -7,39 +9,47 @@ using de.hottis.genericdatabaseapiservice.Models;
namespace de.hottis.genericdatabaseapiservice.Services {
public interface IDbService {
Task<List<T>> JustDoSomething<T>(string msg);
Task<List<TOUT>> ReadBySelect<TIN, TOUT>(string selectStatement, TIN input);
}
public class DbService : IDbService {
async public Task<List<T>> JustDoSomething<T>(string msg) {
Console.WriteLine(msg);
var itemList = new List<T>();
async public Task<List<TOUT>> ReadBySelect<TIN, TOUT>(string selectStatement, TIN input) {
var itemList = new List<TOUT>();
using (var conn = new MySqlConnection("Server=172.16.10.18;User ID=apiservicetestdb;Password=geheim123;Database=apiservicetestdb")) {
await conn.OpenAsync();
using (var cmd = conn.CreateCommand()) {
// cmd.CommandText = "INSERT INTO test1 (txt, nr) VALUES (@txt, @nr)";
// cmd.Parameters.AddWithValue("txt", "txt1");
// cmd.Parameters.AddWithValue("nr", 12);
// await cmd.ExecuteNonQueryAsync();
cmd.CommandText = "SELECT id, txt, nr FROM test1";
cmd.CommandText = selectStatement;
if (input != null){
foreach (var propertyInfo in typeof(TIN).GetProperties()) {
Console.WriteLine("Input Property name: {0} {1} ", propertyInfo.Name, propertyInfo.PropertyType);
var attributes = propertyInfo.GetCustomAttributes(typeof(DataMemberAttribute), true);
var dma = (DataMemberAttribute)attributes[0];
Console.WriteLine("Input DataMember name: {0} {1} ", dma.Name, dma.TypeId);
var value = propertyInfo.GetValue(input);
Console.WriteLine("Input Value: {0}", value);
cmd.Parameters.AddWithValue(dma.Name, propertyInfo.GetValue(input));
}
} else {
Console.WriteLine("no input data");
}
using (var reader = await cmd.ExecuteReaderAsync()) {
while (await reader.ReadAsync()) {
var item = Activator.CreateInstance<T>();
foreach (var propertyInfo in typeof(T).GetProperties()) {
Console.WriteLine("Property name: {0} {1} ", propertyInfo.Name, propertyInfo.PropertyType);
var item = Activator.CreateInstance<TOUT>();
foreach (var propertyInfo in typeof(TOUT).GetProperties()) {
Console.WriteLine("Output Property name: {0} {1} ", propertyInfo.Name, propertyInfo.PropertyType);
var attributes = propertyInfo.GetCustomAttributes(typeof(DataMemberAttribute), true);
var dma = (DataMemberAttribute)attributes[0];
Console.WriteLine("DataMember name: {0} {1} ", dma.Name, dma.TypeId);
Console.WriteLine("Output DataMember name: {0} {1} ", dma.Name, dma.TypeId);
if (propertyInfo.PropertyType == typeof(System.String)) {
propertyInfo.SetValue(item, reader.GetString(dma.Name));
Console.WriteLine("Value:{0}", reader.GetString(dma.Name));
Console.WriteLine("Output Value:{0}", reader.GetString(dma.Name));
} else if (propertyInfo.PropertyType == typeof(System.Int32)) {
propertyInfo.SetValue(item, reader.GetInt32(dma.Name));
Console.WriteLine("Value:{0}", reader.GetInt32(dma.Name));
Console.WriteLine("Output Value:{0}", reader.GetInt32(dma.Name));
}
}
itemList.Add(item);
@ -51,3 +61,5 @@ namespace de.hottis.genericdatabaseapiservice.Services {
}
}
}
#pragma warning restore 1591