339 lines
19 KiB
C#
339 lines
19 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Data;
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using System.Reflection;
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using System.Reflection.Emit;
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using System.Text.RegularExpressions;
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namespace SqlSugar
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{
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///<summary>
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/// ** description：IDataReader Entity Builder
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/// ** author：sunkaixuan
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/// ** date：2017/4/2
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/// ** qq:610262374
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/// </summary>
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public partial class IDataReaderEntityBuilder<T>
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{
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#region Properies
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private List<string> ReaderKeys { get; set; }
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#endregion
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#region Fields
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private SqlSugarClient Context = null;
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private IDataReaderEntityBuilder<T> DynamicBuilder;
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private IDataRecord DataRecord;
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private static readonly MethodInfo isDBNullMethod = typeof(IDataRecord).GetMethod("IsDBNull", new Type[] { typeof(int) });
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private static readonly MethodInfo getValueMethod = typeof(IDataRecord).GetMethod("get_Item", new Type[] { typeof(int) });
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private static readonly MethodInfo getBoolean = typeof(IDataRecord).GetMethod("GetBoolean", new Type[] { typeof(int) });
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private static readonly MethodInfo getByte = typeof(IDataRecord).GetMethod("GetByte", new Type[] { typeof(int) });
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private static readonly MethodInfo getDateTime = typeof(IDataRecord).GetMethod("GetDateTime", new Type[] { typeof(int) });
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private static readonly MethodInfo getDecimal = typeof(IDataRecord).GetMethod("GetDecimal", new Type[] { typeof(int) });
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private static readonly MethodInfo getDouble = typeof(IDataRecord).GetMethod("GetDouble", new Type[] { typeof(int) });
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private static readonly MethodInfo getFloat = typeof(IDataRecord).GetMethod("GetFloat", new Type[] { typeof(int) });
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private static readonly MethodInfo getGuid = typeof(IDataRecord).GetMethod("GetGuid", new Type[] { typeof(int) });
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private static readonly MethodInfo getInt16 = typeof(IDataRecord).GetMethod("GetInt16", new Type[] { typeof(int) });
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private static readonly MethodInfo getInt32 = typeof(IDataRecord).GetMethod("GetInt32", new Type[] { typeof(int) });
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private static readonly MethodInfo getInt64 = typeof(IDataRecord).GetMethod("GetInt64", new Type[] { typeof(int) });
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private static readonly MethodInfo getString = typeof(IDataRecord).GetMethod("GetString", new Type[] { typeof(int) });
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private static readonly MethodInfo getdatetimeoffset = typeof(IDataRecordExtensions).GetMethod("Getdatetimeoffset");
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private static readonly MethodInfo getdatetimeoffsetDate = typeof(IDataRecordExtensions).GetMethod("GetdatetimeoffsetDate");
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private static readonly MethodInfo getStringGuid = typeof(IDataRecordExtensions).GetMethod("GetStringGuid");
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private static readonly MethodInfo getConvertStringGuid = typeof(IDataRecordExtensions).GetMethod("GetConvertStringGuid");
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private static readonly MethodInfo getEnum = typeof(IDataRecordExtensions).GetMethod("GetEnum");
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private static readonly MethodInfo getConvertString = typeof(IDataRecordExtensions).GetMethod("GetConvertString");
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private static readonly MethodInfo getConvertFloat = typeof(IDataRecordExtensions).GetMethod("GetConvertFloat");
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private static readonly MethodInfo getConvertBoolean = typeof(IDataRecordExtensions).GetMethod("GetConvertBoolean");
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private static readonly MethodInfo getConvertByte = typeof(IDataRecordExtensions).GetMethod("GetConvertByte");
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private static readonly MethodInfo getConvertChar = typeof(IDataRecordExtensions).GetMethod("GetConvertChar");
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private static readonly MethodInfo getConvertDateTime = typeof(IDataRecordExtensions).GetMethod("GetConvertDateTime");
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private static readonly MethodInfo getConvertTime = typeof(IDataRecordExtensions).GetMethod("GetConvertTime");
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private static readonly MethodInfo getTime = typeof(IDataRecordExtensions).GetMethod("GetTime");
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private static readonly MethodInfo getConvertDecimal = typeof(IDataRecordExtensions).GetMethod("GetConvertDecimal");
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private static readonly MethodInfo getConvertDouble = typeof(IDataRecordExtensions).GetMethod("GetConvertDouble");
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private static readonly MethodInfo getConvertDoubleToFloat = typeof(IDataRecordExtensions).GetMethod("GetConvertDoubleToFloat");
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private static readonly MethodInfo getConvertGuid = typeof(IDataRecordExtensions).GetMethod("GetConvertGuid");
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private static readonly MethodInfo getConvertInt16 = typeof(IDataRecordExtensions).GetMethod("GetConvertInt16");
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private static readonly MethodInfo getConvertInt32 = typeof(IDataRecordExtensions).GetMethod("GetConvertInt32");
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private static readonly MethodInfo getConvertInt64 = typeof(IDataRecordExtensions).GetMethod("GetConvetInt64");
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private static readonly MethodInfo getConvertEnum_Null = typeof(IDataRecordExtensions).GetMethod("GetConvertEnum_Null");
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private static readonly MethodInfo getConvertdatetimeoffset = typeof(IDataRecordExtensions).GetMethod("GetConvertdatetimeoffset");
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private static readonly MethodInfo getConvertdatetimeoffsetDate = typeof(IDataRecordExtensions).GetMethod("GetConvertdatetimeoffsetDate");
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private static readonly MethodInfo getOtherNull = typeof(IDataRecordExtensions).GetMethod("GetOtherNull");
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private static readonly MethodInfo getOther = typeof(IDataRecordExtensions).GetMethod("GetOther");
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private static readonly MethodInfo getSqliteTypeNull = typeof(IDataRecordExtensions).GetMethod("GetSqliteTypeNull");
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private static readonly MethodInfo getSqliteType = typeof(IDataRecordExtensions).GetMethod("GetSqliteType");
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private static readonly MethodInfo getEntity = typeof(IDataRecordExtensions).GetMethod("GetEntity", new Type[] { typeof(SqlSugarClient) });
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private delegate T Load(IDataRecord dataRecord);
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private Load handler;
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#endregion
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#region Constructor
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private IDataReaderEntityBuilder()
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{
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}
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public IDataReaderEntityBuilder(SqlSugarClient context, IDataRecord dataRecord,List<string> fieldNames)
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{
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this.Context = context;
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this.DataRecord = dataRecord;
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this.DynamicBuilder = new IDataReaderEntityBuilder<T>();
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this.ReaderKeys = fieldNames;
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}
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#endregion
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#region Public methods
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public T Build(IDataRecord dataRecord)
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{
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return handler(dataRecord);
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}
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public IDataReaderEntityBuilder<T> CreateBuilder(Type type)
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{
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DynamicMethod method = new DynamicMethod("SqlSugarEntity", type,
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new Type[] { typeof(IDataRecord) }, type, true);
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ILGenerator generator = method.GetILGenerator();
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LocalBuilder result = generator.DeclareLocal(type);
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generator.Emit(OpCodes.Newobj, type.GetConstructor(Type.EmptyTypes));
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generator.Emit(OpCodes.Stloc, result);
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var mappingColumns = Context.MappingColumns.Where(it => it.EntityName.Equals(type.Name, StringComparison.CurrentCultureIgnoreCase)).ToList();
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var properties = type.GetProperties();
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foreach (var propertyInfo in properties)
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{
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string fileName = propertyInfo.Name;
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if (mappingColumns != null)
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{
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var mappInfo = mappingColumns.SingleOrDefault(it => it.EntityName == type.Name && it.PropertyName.Equals(propertyInfo.Name));
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if (mappInfo != null)
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{
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if (!ReaderKeys.Contains(mappInfo.DbColumnName))
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{
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fileName = ReaderKeys.FirstOrDefault(it => it.Equals(mappInfo.DbColumnName, StringComparison.CurrentCultureIgnoreCase)|| it.Equals(mappInfo.PropertyName, StringComparison.CurrentCultureIgnoreCase));
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}
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else
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{
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fileName = mappInfo.DbColumnName;
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}
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}
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}
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if (IsIgnore(type, propertyInfo)&&!this.ReaderKeys.Any(it=>it==fileName))
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{
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continue;
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}
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if (propertyInfo != null && propertyInfo.GetSetMethod() != null)
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{
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if (propertyInfo.PropertyType.IsClass() && propertyInfo.PropertyType != UtilConstants.ByteArrayType && propertyInfo.PropertyType != UtilConstants.ObjType)
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{
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BindClass(generator, result, propertyInfo);
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}
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else
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{
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if (this.ReaderKeys.Any(it => it.Equals(fileName, StringComparison.CurrentCultureIgnoreCase)))
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{
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BindField(generator, result, propertyInfo, ReaderKeys.First(it => it.Equals(fileName, StringComparison.CurrentCultureIgnoreCase)));
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}
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}
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}
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}
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generator.Emit(OpCodes.Ldloc, result);
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generator.Emit(OpCodes.Ret);
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DynamicBuilder.handler = (Load)method.CreateDelegate(typeof(Load));
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return DynamicBuilder;
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}
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#endregion
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#region Private methods
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private bool IsIgnore(Type type, PropertyInfo propertyInfo)
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{
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return Context.IgnoreColumns != null && Context.IgnoreColumns.Any(it => it.PropertyName.Equals(propertyInfo.Name, StringComparison.CurrentCultureIgnoreCase)
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&& it.EntityName.Equals(type.Name, StringComparison.CurrentCultureIgnoreCase));
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}
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private void BindClass(ILGenerator generator, LocalBuilder result, PropertyInfo propertyInfo)
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{
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}
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private void BindField(ILGenerator generator, LocalBuilder result, PropertyInfo propertyInfo, string fileName)
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{
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int i = DataRecord.GetOrdinal(fileName);
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Label endIfLabel = generator.DefineLabel();
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generator.Emit(OpCodes.Ldarg_0);
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generator.Emit(OpCodes.Ldc_I4, i);
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generator.Emit(OpCodes.Callvirt, isDBNullMethod);
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generator.Emit(OpCodes.Brtrue, endIfLabel);
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generator.Emit(OpCodes.Ldloc, result);
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generator.Emit(OpCodes.Ldarg_0);
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generator.Emit(OpCodes.Ldc_I4, i);
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BindMethod(generator, propertyInfo, i);
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generator.Emit(OpCodes.Callvirt, propertyInfo.GetSetMethod());
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generator.MarkLabel(endIfLabel);
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}
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private void BindMethod(ILGenerator generator, PropertyInfo bindProperty, int ordinal)
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{
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IDbBind bind = Context.Ado.DbBind;
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bool isNullableType = false;
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MethodInfo method = null;
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Type bindPropertyType = UtilMethods.GetUnderType(bindProperty, ref isNullableType);
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string dbTypeName = UtilMethods.GetParenthesesValue(DataRecord.GetDataTypeName(ordinal));
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if (dbTypeName.IsNullOrEmpty()) {
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dbTypeName = bindPropertyType.Name;
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}
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string propertyName = bindProperty.Name;
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string validPropertyName = bind.GetPropertyTypeName(dbTypeName);
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validPropertyName = validPropertyName == "byte[]" ? "byteArray" : validPropertyName;
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CSharpDataType validPropertyType = (CSharpDataType)Enum.Parse(typeof(CSharpDataType), validPropertyName);
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#region Sqlite Logic
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if (this.Context.CurrentConnectionConfig.DbType == DbType.Sqlite)
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{
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if (bindPropertyType.IsEnum())
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{
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method = isNullableType ? getConvertEnum_Null.MakeGenericMethod(bindPropertyType) : getEnum.MakeGenericMethod(bindPropertyType);
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}
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else if (bindPropertyType == UtilConstants.IntType)
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{
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method = isNullableType ? getConvertInt32 : getInt32;
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}
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else if (bindPropertyType == UtilConstants.StringType)
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{
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method = getString;
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}
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else if (bindPropertyType == UtilConstants.ByteArrayType)
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{
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method = getValueMethod;
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generator.Emit(OpCodes.Call, method);
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generator.Emit(OpCodes.Unbox_Any, bindProperty.PropertyType);
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return;
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}
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else
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{
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method = isNullableType ? getSqliteTypeNull.MakeGenericMethod(bindPropertyType) : getSqliteType.MakeGenericMethod(bindPropertyType);
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}
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generator.Emit(OpCodes.Call, method);
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return;
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};
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#endregion
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#region Common Database Logic
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string bindProperyTypeName = bindPropertyType.Name.ToLower();
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bool isEnum = bindPropertyType.IsEnum();
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if (isEnum) { validPropertyType = CSharpDataType.@enum; }
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switch (validPropertyType)
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{
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case CSharpDataType.@int:
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CheckType(bind.IntThrow, bindProperyTypeName, validPropertyName, propertyName);
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if (bindProperyTypeName.IsContainsIn("int", "int32"))
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method = isNullableType ? getConvertInt32 : getInt32;
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if (bindProperyTypeName.IsContainsIn("int64"))
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method = isNullableType ? getConvertInt64 : getInt64;
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if (bindProperyTypeName.IsContainsIn("byte"))
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method = isNullableType ? getConvertByte : getByte;
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if (bindProperyTypeName.IsContainsIn("int16"))
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method = isNullableType ? getConvertInt16 : getInt16;
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break;
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case CSharpDataType.@bool:
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if (bindProperyTypeName == "bool" || bindProperyTypeName == "boolean")
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method = isNullableType ? getConvertBoolean : getBoolean;
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break;
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case CSharpDataType.@string:
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CheckType(bind.StringThrow, bindProperyTypeName, validPropertyName, propertyName);
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method = getString;
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if (bindProperyTypeName == "guid")
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{
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method = isNullableType ? getConvertStringGuid : getStringGuid;
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}
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break;
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case CSharpDataType.DateTime:
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CheckType(bind.DateThrow, bindProperyTypeName, validPropertyName, propertyName);
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if (bindProperyTypeName == "datetime")
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method = isNullableType ? getConvertDateTime : getDateTime;
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if (bindProperyTypeName == "datetime"&&dbTypeName == "time")
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method = isNullableType ? getConvertTime : getTime;
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break;
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case CSharpDataType.@decimal:
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CheckType(bind.DecimalThrow, bindProperyTypeName, validPropertyName, propertyName);
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if (bindProperyTypeName == "decimal")
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method = isNullableType ? getConvertDecimal : getDecimal;
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break;
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case CSharpDataType.@float:
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case CSharpDataType.@double:
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CheckType(bind.DoubleThrow, bindProperyTypeName, validPropertyName, propertyName);
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if (bindProperyTypeName.IsIn( "double", "single")&&dbTypeName!="real")
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method = isNullableType ? getConvertDouble : getDouble;
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else
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method = isNullableType ? getConvertFloat : getFloat;
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if (dbTypeName.Equals("float",StringComparison.CurrentCultureIgnoreCase) && isNullableType && bindProperyTypeName.Equals("single",StringComparison.CurrentCultureIgnoreCase)) {
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method = getConvertDoubleToFloat;
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}
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break;
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case CSharpDataType.Guid:
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CheckType(bind.GuidThrow, bindProperyTypeName, validPropertyName, propertyName);
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if (bindProperyTypeName == "guid")
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method = isNullableType ? getConvertGuid : getGuid;
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break;
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case CSharpDataType.@byte:
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if (bindProperyTypeName == "byte")
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method = isNullableType ? getConvertByte : getByte;
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break;
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case CSharpDataType.@enum:
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method = isNullableType ? getConvertEnum_Null.MakeGenericMethod(bindPropertyType) : getEnum.MakeGenericMethod(bindPropertyType);
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break;
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case CSharpDataType.@short:
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CheckType(bind.ShortThrow, bindProperyTypeName, validPropertyName, propertyName);
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if (bindProperyTypeName == "int16" || bindProperyTypeName == "short")
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method = isNullableType ? getConvertInt16 : getInt16;
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break;
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case CSharpDataType.@long:
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if (bindProperyTypeName == "int64" || bindProperyTypeName == "long")
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method = isNullableType ? getConvertInt64 : getInt64;
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break;
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case CSharpDataType.DateTimeOffset:
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method = isNullableType ? getConvertdatetimeoffset : getdatetimeoffset;
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if (bindProperyTypeName == "datetime")
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method = isNullableType ? getConvertdatetimeoffsetDate : getdatetimeoffsetDate;
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break;
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default:
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method = getValueMethod;
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break;
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}
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if (method == null && bindPropertyType == UtilConstants.StringType)
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{
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method = getConvertString;
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}
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if (bindPropertyType == UtilConstants.ObjType)
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{
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method = getValueMethod;
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}
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if (method == null)
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method = isNullableType ? getOtherNull.MakeGenericMethod(bindPropertyType) : getOther.MakeGenericMethod(bindPropertyType);
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generator.Emit(OpCodes.Call, method);
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if (method == getValueMethod)
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{
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generator.Emit(OpCodes.Unbox_Any, bindProperty.PropertyType);
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}
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#endregion
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}
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private void CheckType(List<string> invalidTypes, string bindProperyTypeName, string validPropertyType, string propertyName)
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{
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var isAny = invalidTypes.Contains(bindProperyTypeName);
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if (isAny)
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{
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throw new SqlSugarException(string.Format("{0} can't convert {1} to {2}", propertyName, validPropertyType, bindProperyTypeName));
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}
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}
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#endregion
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}
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}
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