caliverse_server/ServerBase/DB/QueryDbRequester.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;



using Amazon.DynamoDBv2;
using Amazon.DynamoDBv2.DocumentModel;
using Amazon.DynamoDBv2.Model;



namespace ServerBase;

//==============================================================================================
// DB 쿼리 종류별 재정의 클래스들 이다.
//==============================================================================================

public partial class DBRequestGetBatch : QueryDbRequesterWithItemRequestBase<BatchGetItemRequest>
{
    public override async Task<Result> doDbRequestAsync()
    {
        var result = new Result();

        var query_batch = getQueryBatch();
        ArgumentNullException.ThrowIfNull(query_batch, $"query_batch is null !!!");

        var query_runner = query_batch.getQueryRunner() as QueryRunnerWithItemRequest;
        ArgumentNullException.ThrowIfNull(query_runner, $"query_runner is null !!!");
        var db_client = query_batch.getDynamoDbConnector().getDbClient();
        ArgumentNullException.ThrowIfNull(db_client, $"db_client is null !!!");

        //=====================================================================================
        // Batch 기반 DB Get Request 처리 : Non-Transaction
        //=====================================================================================
        var response = await db_client.BatchGetItemAsync(getDbRequestGenericType());
        ArgumentNullException.ThrowIfNull(response, $"response is null !!!");

        await response.logDetail();

        query_runner.addDbResponse(response);

        return result;
    }
}

public partial class DBRequestWriteBatch : QueryDbRequesterWithItemRequestBase<BatchWriteItemRequest>
{
    public override async Task<Result> doDbRequestAsync()
    {
        var result = new Result();

        var query_batch = getQueryBatch();
        ArgumentNullException.ThrowIfNull(query_batch, $"query_batch is null !!!");

        var query_runner = query_batch.getQueryRunner() as QueryRunnerWithItemRequest;
        ArgumentNullException.ThrowIfNull(query_runner, $"query_runner is null !!!");
        var db_client = query_batch.getDynamoDbConnector().getDbClient();
        ArgumentNullException.ThrowIfNull(db_client, $"db_client is null !!!");

        //=====================================================================================
        // Batch 기반 DB Write Request 처리 : Non-Transaction
        //=====================================================================================
        var response = await db_client.BatchWriteItemAsync(getDbRequestGenericType());
        ArgumentNullException.ThrowIfNull(response, $"response is null !!!");

        await response.logDetail();

        query_runner.addDbResponse(response);

        return result;
    }
}

public partial class DBRequestUpdate : QueryDbRequesterWithItemRequestBase<UpdateItemRequest>
{
    public override async Task<Result> doDbRequestAsync()
    {
        var result = new Result();

        var query_batch = getQueryBatch();
        ArgumentNullException.ThrowIfNull(query_batch, $"query_batch is null !!!");

        var query_runner = query_batch.getQueryRunner() as QueryRunnerWithItemRequest;
        ArgumentNullException.ThrowIfNull(query_runner, $"query_runner is null !!!");
        var db_client = query_batch.getDynamoDbConnector().getDbClient();
        ArgumentNullException.ThrowIfNull(db_client, $"db_client is null !!!");


        //=====================================================================================
        // Update 기반 DB Update Request 처리 : Non-Transaction
        //=====================================================================================
        var response = await db_client.UpdateItemAsync(getDbRequestGenericType());
        ArgumentNullException.ThrowIfNull(response, $"response is null !!!");

        await response.logDetail();

        query_runner.addDbResponse(response);

        return result;
    }
}

public partial class DBRequestGetWithTransact : QueryDbRequesterWithItemRequestBase<TransactGetItemsRequest>
{
    public override async Task<Result> doDbRequestAsync()
    {
        var result = new Result();

        var query_batch = getQueryBatch();
        ArgumentNullException.ThrowIfNull(query_batch, $"query_batch is null !!!");

        var query_runner = query_batch.getQueryRunner() as QueryRunnerWithItemRequest;
        ArgumentNullException.ThrowIfNull(query_runner, $"query_runner is null !!!");
        var db_client = query_batch.getDynamoDbConnector().getDbClient();
        ArgumentNullException.ThrowIfNull(db_client, $"db_client is null !!!");


        //=====================================================================================
        // Transaction 기반 DB Get Request 처리
        //=====================================================================================
        var response = await db_client.TransactGetItemsAsync(getDbRequestGenericType());
        ArgumentNullException.ThrowIfNull(response, $"response is null !!!");

        await response.logDetail(getDbRequestGenericType());

        query_runner.addDbResponse(response);

        return result;
    }
}

public partial class DBRequestWriteWithTransact : QueryDbRequesterWithItemRequestBase<TransactWriteItemsRequest>
{
    public override async Task<Result> doDbRequestAsync()
    {
        var result = new Result();

        var query_batch = getQueryBatch();
        ArgumentNullException.ThrowIfNull(query_batch, $"query_batch is null !!!");

        var query_runner = query_batch.getQueryRunner() as QueryRunnerWithItemRequest;
        ArgumentNullException.ThrowIfNull(query_runner, $"query_runner is null !!!");
        var db_client = query_batch.getDynamoDbConnector().getDbClient();
        ArgumentNullException.ThrowIfNull(db_client, $"db_client is null !!!");

        //=====================================================================================
        // Transaction 기반 DB Write Request 처리
        //=====================================================================================
        var response = await db_client.TransactWriteItemsAsync(getDbRequestGenericType());
        ArgumentNullException.ThrowIfNull(response, $"response is null !!!");

        await response.logDetail();

        query_runner.addDbResponse(response);

        return result;
    }
}




//==============================================================================================
// DB 쿼리 Document 전용 재정의 클래스들 이다.
//==============================================================================================

public partial class DBRequestGetWithDocumentBatchGet : QueryDbRequesterWithDocumentBatchGetBase<DocumentBatchGet>
{
    public override async Task<Result> doDbRequestAsync()
    {
        await Task.CompletedTask;
        var result = new Result();

        var query_batch = getQueryBatch();
        ArgumentNullException.ThrowIfNull(query_batch, $"query_batch is null !!!");

        var query_runner = query_batch.getQueryRunner() as QueryRunnerWithDocument;
        ArgumentNullException.ThrowIfNull(query_runner, $"query_runner is null !!!");
        var doc_batch_get = query_runner.getOrNewMultiTableDocumentBatchGet();
        ArgumentNullException.ThrowIfNull(doc_batch_get, $"doc_batch_get is null !!!");

        doc_batch_get.AddBatch(getDbRequestGenericType());

        return result;
    }
}

public partial class DBRequestWriteWithDocumentBatchWrite : QueryDbRequesterWithDocumentBatchWriteBase<DocumentBatchWrite>
{
    public override async Task<Result> doDbRequestAsync()
    {
        await Task.CompletedTask;
        var result = new Result();

        var query_batch = getQueryBatch();
        ArgumentNullException.ThrowIfNull(query_batch, $"query_batch is null !!!");

        var query_runner = query_batch.getQueryRunner() as QueryRunnerWithDocument;
        ArgumentNullException.ThrowIfNull(query_runner, $"query_runner is null !!!");
        var doc_batch_write = query_runner.getOrNewMultiTableDocumentBatchWrite();
        ArgumentNullException.ThrowIfNull(doc_batch_write, $"doc_batch_write is null !!!");

        doc_batch_write.AddBatch(getDbRequestGenericType());

        return result;
    }
}

public partial class DBRequestGetWithDocumentTransactGet : QueryDbRequesterWithDocumentTransactGetBase<DocumentTransactGet>
{
    public override async Task<Result> doDbRequestAsync()
    {
        await Task.CompletedTask;
        var result = new Result();

        var query_batch = getQueryBatch();
        ArgumentNullException.ThrowIfNull(query_batch, $"query_batch is null !!!");

        var query_runner = query_batch.getQueryRunner() as QueryRunnerWithDocument;
        ArgumentNullException.ThrowIfNull(query_runner, $"query_runner is null !!!");
        var doc_transact_get = query_runner.getOrNewMultiTableDocumentTransactGet();
        ArgumentNullException.ThrowIfNull(doc_transact_get, $"doc_transact_get is null !!!");

        doc_transact_get.AddTransactionPart(getDbRequestGenericType());

        return result;
    }
}

public partial class DBRequestWriteWithDocumentTransactWrite : QueryDbRequesterWithDocumentTransactWriteBase<DocumentTransactWrite>
{
    public override async Task<Result> doDbRequestAsync()
    {
        await Task.CompletedTask;
        var result = new Result();

        var query_batch = getQueryBatch();
        ArgumentNullException.ThrowIfNull(query_batch, $"query_batch is null !!!");

        var query_runner = query_batch.getQueryRunner() as QueryRunnerWithDocument;
        ArgumentNullException.ThrowIfNull(query_runner, $"query_runner is null !!!");
        var doc_transact_write = query_runner.getOrNewMultiTableDocumentTransactWrite();
        ArgumentNullException.ThrowIfNull(doc_transact_write, $"doc_transact_write is null !!!");

        doc_transact_write.AddTransactionPart(getDbRequestGenericType());

        return result;
    }
}