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Merge pull request #16 from f7q/ef-table-create
データベース自動生成
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‎GroongaSample/NuGet.config‎

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<?xml version="1.0" encoding="utf-8"?>
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<configuration>
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<packageSources>
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<clear />
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<add key="NuGet" value="https://api.nuget.org/v3/index.json" />
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</packageSources>
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</configuration>

‎GroongaSample/WebApiSample.sln‎

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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio 15
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VisualStudioVersion = 15.0.26430.15
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "src", "src", "{E3F89342-C6EC-4C23-A6BB-05CF73ED91D1}"
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EndProject
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Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{29042E6E-467D-452D-AFD8-0CB8EE1A45B6}"
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EndProject
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Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "WebApiSample", "src\WebApiSample\WebApiSample.csproj", "{4E33D213-0744-437E-AF0D-2AC91E05F5DB}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{4E33D213-0744-437E-AF0D-2AC91E05F5DB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{4E33D213-0744-437E-AF0D-2AC91E05F5DB}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{4E33D213-0744-437E-AF0D-2AC91E05F5DB}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{4E33D213-0744-437E-AF0D-2AC91E05F5DB}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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GlobalSection(NestedProjects) = preSolution
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{4E33D213-0744-437E-AF0D-2AC91E05F5DB} = {E3F89342-C6EC-4C23-A6BB-05CF73ED91D1}
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EndGlobalSection
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EndGlobal

‎GroongaSample/global.json‎

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{
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"projects": [ "src" ],
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"sdk": {
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"version": "1.0.0"
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}
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}

‎GroongaSample/src/WebApiSample/Controllers/ValuesController.cs‎

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using System;
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using System.Linq;
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using Microsoft.AspNetCore.Mvc;
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using WebApiSample.Models;
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using Microsoft.Extensions.Logging;
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using Microsoft.EntityFrameworkCore;
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namespace WebApiSample.Controllers
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{
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[Route("api/[controller]")]
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public class ValuesController : Controller
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{
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private SampleDbContext _dbContext { get; set; }
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private ILogger _logger { get; set; }
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public ValuesController(SampleDbContext dbContext, ILogger<ValuesController> logger)
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{
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_dbContext = dbContext;
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_logger = logger;
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}
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// GET api/values
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[HttpGet]
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public IActionResult Get()
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{
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var result = _dbContext.Values.OrderBy(i => i.Name);
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if (result != null)
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{
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return Ok(result);
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}
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return NotFound();
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}
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// GET api/values/5
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[HttpGet("{name}")]
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public IActionResult Get(string name)
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{
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var sql = _dbContext.Values.Where(i => i.Name == name).ToSql();
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_logger.LogInformation("before sql{@}", sql);
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sql = sql.Replace("=", "&@~"); // AND ORは大文字
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_logger.LogInformation("after sql{@}", sql);
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var result = _dbContext.Values.FromSql(sql).ToList();
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if (result != null)
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{
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return Ok(result);
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}
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return NotFound();
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}
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// POST api/values
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[HttpPost]
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public IActionResult Post([FromBody]Value value)
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{
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try
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{
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_dbContext.Values.Add(value);
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_dbContext.SaveChanges();
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return Ok();
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}
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catch (Exception ex)
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{
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_logger.LogInformation(ex.ToString());
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return new NotFoundResult();
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}
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}
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// PUT api/values/5
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[HttpPut("{id}")]
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public IActionResult Put(int id, [FromBody]Value value)
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{
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try
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{
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var result = _dbContext.Values.Where(i => i.Id == id).First();
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if(result != null) {
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_dbContext.Values.Update(value);
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_dbContext.SaveChanges();
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}
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else
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{
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_dbContext.Values.Add(value);
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_dbContext.SaveChanges();
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}
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return Ok();
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}
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catch (Exception ex)
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{
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_logger.LogInformation(ex.ToString());
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return new NotFoundResult();
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}
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}
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// DELETE api/values/5
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[HttpDelete("{id}")]
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public IActionResult Delete(int id)
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{
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try {
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var value = _dbContext.Values.Where(i => i.Id == id).First();
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_dbContext.Values.Remove(value);
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_dbContext.SaveChanges();
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return Ok();
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}
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catch (Exception ex)
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{
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_logger.LogInformation(ex.ToString());
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return new NotFoundResult();
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}
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}
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}
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}

‎GroongaSample/src/WebApiSample/IQueryableExtensions.cs‎

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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading.Tasks;
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using Microsoft.EntityFrameworkCore.Internal;
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using Microsoft.EntityFrameworkCore.Query;
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using Microsoft.EntityFrameworkCore.Query.Internal;
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using Microsoft.EntityFrameworkCore.Storage;
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using System.Reflection;
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using Remotion.Linq.Parsing.Structure;
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namespace WebApiSample
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{
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public static class IQueryableExtensions
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{
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private static readonly TypeInfo QueryCompilerTypeInfo = typeof(QueryCompiler).GetTypeInfo();
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private static readonly FieldInfo QueryCompilerField = typeof(EntityQueryProvider).GetTypeInfo().DeclaredFields.First(x => x.Name == "_queryCompiler");
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private static readonly PropertyInfo NodeTypeProviderField = QueryCompilerTypeInfo.DeclaredProperties.Single(x => x.Name == "NodeTypeProvider");
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private static readonly MethodInfo CreateQueryParserMethod = QueryCompilerTypeInfo.DeclaredMethods.First(x => x.Name == "CreateQueryParser");
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private static readonly FieldInfo DataBaseField = QueryCompilerTypeInfo.DeclaredFields.Single(x => x.Name == "_database");
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private static readonly FieldInfo QueryCompilationContextFactoryField = typeof(Database).GetTypeInfo().DeclaredFields.Single(x => x.Name == "_queryCompilationContextFactory");
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public static string ToSql<TEntity>(this IQueryable<TEntity> query) where TEntity : class
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{
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if (!(query is EntityQueryable<TEntity>) && !(query is InternalDbSet<TEntity>))
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{
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throw new ArgumentException("Invalid query");
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}
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var queryCompiler = (IQueryCompiler)QueryCompilerField.GetValue(query.Provider);
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var nodeTypeProvider = (INodeTypeProvider)NodeTypeProviderField.GetValue(queryCompiler);
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var parser = (IQueryParser)CreateQueryParserMethod.Invoke(queryCompiler, new object[] { nodeTypeProvider });
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var queryModel = parser.GetParsedQuery(query.Expression);
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var database = DataBaseField.GetValue(queryCompiler);
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var queryCompilationContextFactory = (IQueryCompilationContextFactory)QueryCompilationContextFactoryField.GetValue(database);
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var queryCompilationContext = queryCompilationContextFactory.Create(false);
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var modelVisitor = (RelationalQueryModelVisitor)queryCompilationContext.CreateQueryModelVisitor();
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modelVisitor.CreateQueryExecutor<TEntity>(queryModel);
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var sql = modelVisitor.Queries.First().ToString();
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return sql;
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}
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}
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}

‎GroongaSample/src/WebApiSample/Models/SampleDbContext.cs‎

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using System;
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using System.IO;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading.Tasks;
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using Microsoft.Extensions.Configuration;
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using Microsoft.EntityFrameworkCore;
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namespace WebApiSample.Models
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{
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public class SampleDbContext : DbContext
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{
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public SampleDbContext(DbContextOptions<SampleDbContext> options) :base(options)
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{
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}
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protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
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{
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if (!optionsBuilder.IsConfigured)
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{
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var config = new ConfigurationBuilder()
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.SetBasePath(Directory.GetCurrentDirectory())
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.AddJsonFile("appsettings.json")
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.Build();
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var dbkind = config["Data:DefaultConnection:ConnectionDBString"];
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if(dbkind.Equals("sqlite"))
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{
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optionsBuilder.UseSqlite(config["Data:DefaultConnection:ConnectionString"]);
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}
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if (dbkind.Equals("sqlserver"))
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{
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optionsBuilder.UseSqlServer(config["Data:DefaultConnection:ConnectionString"]);
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}
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if (dbkind.Equals("postgresql"))
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{
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optionsBuilder.UseNpgsql(config["Data:DefaultConnection:ConnectionString"]);
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}
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if (dbkind.Equals("inmemory"))
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{
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optionsBuilder.UseInMemoryDatabase();
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}
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}
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//base.OnConfiguring(optionsBuilder);
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}
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public DbSet<Value> Values { get; set; }
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protected override void OnModelCreating(ModelBuilder builder)
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{
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builder.Entity<Value>().HasKey(m => m.Id);
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base.OnModelCreating(builder);
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}
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}
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}

‎GroongaSample/src/WebApiSample/Models/Value.cs‎

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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading.Tasks;
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namespace WebApiSample.Models
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{
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public class Value
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{
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public int Id { get; set; }
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public string Name { get; set; }
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}
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}

‎GroongaSample/src/WebApiSample/Program.cs‎

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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore.Hosting;
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using Microsoft.AspNetCore.Builder;
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namespace WebApiSample
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{
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public class Program
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{
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public static void Main(string[] args)
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{
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var host = new WebHostBuilder()
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.UseKestrel()
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.UseContentRoot(Directory.GetCurrentDirectory())
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.UseIISIntegration()
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.UseStartup<Startup>()
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.Build();
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host.Run();
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}
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}
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}

‎GroongaSample/src/WebApiSample/Properties/launchSettings.json‎

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{
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"iisSettings": {
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"windowsAuthentication": false,
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"anonymousAuthentication": true,
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"iisExpress": {
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"applicationUrl": "http://localhost:56006/",
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"sslPort": 0
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}
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},
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"profiles": {
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"IIS Express": {
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"commandName": "IISExpress",
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"launchBrowser": true,
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"launchUrl": "api/values",
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"environmentVariables": {
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"ASPNETCORE_ENVIRONMENT": "Development"
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}
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},
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"WebApiSample": {
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"commandName": "Project",
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"launchBrowser": true,
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"launchUrl": "http://localhost:5000/api/values",
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"environmentVariables": {
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"ASPNETCORE_ENVIRONMENT": "Development"
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}
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}
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}
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}

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