/// <summary>
/// 对数据进行最后的修饰，例如对日期类型的属性加工
/// </summary>
/// <param name="item"></param>
/// <param name="data"></param>
/// <returns></returns>
private static object DecorateDate(ORMappingItem item, object data)
{
object result = data;
if (data is DateTime)
{
DateTime dt = (DateTime)data;
if (item.UtcTimeToLocal)
{
DateTime changedDT = DateTime.SpecifyKind(dt, DateTimeKind.Utc);
DateTime convertedDT = TimeZoneContext.Current.ConvertTimeFromUtc(changedDT);
result = DateTime.SpecifyKind(convertedDT, DateTimeKind.Local);
}
else
{
if (dt.Kind == DateTimeKind.Unspecified)
{
result = DateTime.SpecifyKind(dt, DateTimeKind.Local);
}
}
}
return(result);
}
private static ORMappingItemCollection GetMappingItems(RelativeAttributes attrs, MemberInfo mi)
{
ORMappingItemCollection items = new ORMappingItemCollection();
ORMappingItem item = new ORMappingItem();
item.PropertyName = mi.Name;
item.DataFieldName = mi.Name;
if (attrs.FieldMapping != null)
{
FillMappingItemByAttr(item, attrs.FieldMapping);
}
if (attrs.SqlBehavior != null)
{
FillMappingItemByBehaviorAttr(item, attrs.SqlBehavior);
}
if (attrs.PropertyEncryption != null)
{
FillMappingItemByEncryptionAttr(item, attrs.PropertyEncryption);
}
item.MemberInfo = mi;
item.DeclaringType = mi.DeclaringType;
items.Add(item);
return(items);
}
private static void FillMappingItemByBehaviorAttr(ORMappingItem item, SqlBehaviorAttribute sba)
{
item.BindingFlags = sba.BindingFlags;
item.DefaultExpression = sba.DefaultExpression;
item.ForceUseDefaultExpression = sba.ForceUseDefaultExpression;
item.EnumUsage = sba.EnumUsage;
}
private static void SetMemberValueToObject(ORMappingItem item, MemberInfo mi, object graph, object data)
{
data = DecorateDate(item, data);
IMemberAccessor accessor = graph as IMemberAccessor;
if (accessor != null)
{
accessor.SetValue(graph, mi.Name, data);
}
else
{
switch (mi.MemberType)
{
case MemberTypes.Property:
PropertyInfo pi = (PropertyInfo)mi;
if (pi.CanWrite)
{
pi.SetValue(graph, data, null);
}
break;
case MemberTypes.Field:
FieldInfo fi = (FieldInfo)mi;
fi.SetValue(graph, data);
break;
default:
ThrowInvalidMemberInfoTypeException(mi);
break;
}
}
}
/// <summary>
///
/// </summary>
/// <param name="row">DataRow对象</param>
/// <param name="items">映射关系</param>
/// <param name="graph">对象</param>
/// <param name="dod"></param>
public static void DataRowToObject(DataRow row, ORMappingItemCollection items, object graph, DataToObjectDeligations dod)
{
ExceptionHelper.FalseThrow <ArgumentNullException>(row != null, "row");
ExceptionHelper.FalseThrow <ArgumentNullException>(items != null, "items");
ExceptionHelper.FalseThrow <ArgumentNullException>(graph != null, "graph");
ExceptionHelper.FalseThrow <ArgumentNullException>(row.Table != null, "row.Table");
using (ORMappingContext context = ORMappingContext.GetContext())
{
foreach (DataColumn column in row.Table.Columns)
{
if (items.ContainsKey(column.ColumnName))
{
ORMappingItem item = items[column.ColumnName];
System.Type realType = GetRealType(item.MemberInfo);
object data = row[column];
if (item.EncryptProperty)
{
data = DecryptPropertyValue(item, data);
}
if (Convertible(realType, data))
{
SetValueToObject(item, graph, ConvertData(item, data), row, dod);
}
}
}
}
}
/// <summary>
/// 将DataReader的值写入到对象中
/// </summary>
/// <typeparam name="T">对象类型</typeparam>
/// <param name="dr">IDataReader对象</param>
/// <param name="items">映射关系</param>
/// <param name="graph">对象</param>
/// <param name="dod"></param>
public static void DataReaderToObject <T>(IDataReader dr, ORMappingItemCollection items, T graph, DataToObjectDeligations dod)
{
ExceptionHelper.FalseThrow <ArgumentNullException>(dr != null, "dr");
ExceptionHelper.FalseThrow <ArgumentNullException>(items != null, "items");
ExceptionHelper.FalseThrow <ArgumentNullException>(graph != null, "graph");
DataTable schemaTable = dr.GetSchemaTable();
using (ORMappingContext context = ORMappingContext.GetContext())
{
foreach (DataRow row in schemaTable.Rows)
{
string columnName = row["ColumnName"].ToString();
if (items.ContainsKey(columnName))
{
ORMappingItem item = items[row["ColumnName"].ToString()];
System.Type realType = GetRealType(item.MemberInfo);
object data = dr[columnName];
if (item.EncryptProperty)
{
data = DecryptPropertyValue(item, data);
}
if (Convertible(realType, data))
{
SetValueToObject(item, graph, ConvertData(item, data), dr, dod);
}
}
}
}
}
private static void SetValueToObject(ORMappingItem item, object graph, object data, object row, DataToObjectDeligations dod)
{
if (string.IsNullOrEmpty(item.SubClassPropertyName))
{
SetMemberValueToObject(item.MemberInfo, graph, data);
}
else
{
if (graph != null)
{
MemberInfo mi = TypePropertiesWithNonPublicCacheQueue.Instance.GetPropertyInfoDirectly(graph.GetType(), item.PropertyName);
if (mi == null)
{
mi = graph.GetType().GetField(item.PropertyName,
BindingFlags.Instance | BindingFlags.Public);
}
if (mi != null)
{
object subGraph = GetMemberValueFromObject(mi, graph);
if (subGraph == null)
{
bool useDefaultObject = true;
if (dod != null)
{
MappingEventArgs args = new MappingEventArgs();
args.DataFieldName = item.DataFieldName;
args.PropertyName = item.PropertyName;
args.Graph = graph;
subGraph = dod.OnCreateSubObjectDelegate(row, args, ref useDefaultObject);
}
if (useDefaultObject)
{
if (string.IsNullOrEmpty(item.SubClassTypeDescription) == false)
{
subGraph = TypeCreator.CreateInstance(item.SubClassTypeDescription);
}
else
{
subGraph = Activator.CreateInstance(GetRealType(mi), true);
}
}
SetMemberValueToObject(item.MemberInfo, subGraph, data);
SetMemberValueToObject(mi, graph, subGraph);
}
else
{
SetMemberValueToObject(item.MemberInfo, subGraph, data);
}
}
}
}
}
private static object GetValueFromObjectDirectly(ORMappingItem item, object graph)
{
object data = GetMemberValueFromObject(item.MemberInfo, graph);
if (data != null)
{
System.Type dataType = data.GetType();
if (dataType.IsEnum)
{
if (item.EnumUsage == EnumUsageTypes.UseEnumValue)
{
data = (int)data;
}
else
{
data = data.ToString();
}
}
else
if (dataType == typeof(TimeSpan))
{
data = ((TimeSpan)data).TotalSeconds;
}
}
return(data);
}
private static ORMappingItemCollection GetMappingItemsBySubClass(RelativeAttributes attrs, MemberInfo sourceMI)
{
ORMappingItemCollection items = new ORMappingItemCollection();
System.Type subType = attrs.SubClassType != null ? attrs.SubClassType.Type : GetRealType(sourceMI);
MemberInfo[] mis = GetTypeMembers(subType);
foreach (SubClassORFieldMappingAttribute attr in attrs.SubClassFieldMappings)
{
MemberInfo mi = GetMemberInfoByName(attr.SubPropertyName, mis);
if (mi != null)
{
if (items.ContainsKey(attr.DataFieldName) == false)
{
ORMappingItem item = new ORMappingItem();
item.PropertyName = sourceMI.Name;
item.SubClassPropertyName = attr.SubPropertyName;
item.MemberInfo = mi;
item.DeclaringType = sourceMI.DeclaringType;
if (attrs.SubClassType != null)
{
item.SubClassTypeDescription = attrs.SubClassType.TypeDescription;
}
FillMappingItemByAttr(item, attr);
items.Add(item);
}
}
}
foreach (SubClassSqlBehaviorAttribute attr in attrs.SubClassFieldSqlBehaviors)
{
ORMappingItem item = FindItemBySubClassPropertyName(attr.SubPropertyName, items);
if (item != null)
{
FillMappingItemByBehaviorAttr(item, attr);
}
}
foreach (SubClassPropertyEncryptionAttribute attr in attrs.SubClassPropertyEncryptions)
{
ORMappingItem item = FindItemBySubClassPropertyName(attr.SubPropertyName, items);
if (item != null)
{
FillMappingItemByEncryptionAttr(item, attr);
}
}
return(items);
}
private static void FillMappingItemByAttr(ORMappingItem item, ORFieldMappingAttribute fm)
{
item.DataFieldName = fm.DataFieldName;
item.IsIdentity = fm.IsIdentity;
item.IsNullable = fm.IsNullable;
item.Length = fm.Length;
item.PrimaryKey = fm.PrimaryKey;
item.Format = fm.Format;
}
private static object GetMemberValueFromObject(ORMappingItem item, MemberInfo mi, object graph)
{
try
{
object data = null;
IMemberAccessor accessor = graph as IMemberAccessor;
if (accessor != null)
{
data = accessor.GetValue(graph, mi.Name);
}
else
{
switch (mi.MemberType)
{
case MemberTypes.Property:
PropertyInfo pi = (PropertyInfo)mi;
if (pi.CanRead)
{
data = pi.GetValue(graph, null);
}
break;
case MemberTypes.Field:
FieldInfo fi = (FieldInfo)mi;
data = fi.GetValue(graph);
break;
default:
ThrowInvalidMemberInfoTypeException(mi);
break;
}
}
if (data is DateTime)
{
if (item.UtcTimeToLocal)
{
DateTime dt = (DateTime)data;
dt = DateTime.SpecifyKind(dt, DateTimeKind.Unspecified);
data = TimeZoneContext.Current.ConvertTimeToUtc(dt);
}
}
return(data);
}
catch (System.Exception ex)
{
System.Exception realEx = ExceptionHelper.GetRealException(ex);
throw new ApplicationException(string.Format("读取属性{0}值的时候出错，{1}", mi.Name, realEx.Message));
}
}
private static object FormatValue(object dataValue, ORMappingItem item)
{
object result = dataValue;
if (item.Format.IsNotEmpty())
{
result = string.Format(item.Format, dataValue);
}
return(result);
}
private static void DoWhereSqlClauseBuilder <T>(SqlClauseBuilderIUW builder, ORMappingItem item, T graph)
{
object data = GetValueFromObject(item, graph);
if ((data == null || data == DBNull.Value))
{
builder.AppendItem(item.DataFieldName, data, SqlClauseBuilderBase.Is);
}
else
{
builder.AppendItem(item.DataFieldName, FormatValue(data, item));
}
}
/// <summary>
/// 加密数据
/// </summary>
/// <param name="item"></param>
/// <param name="originalData"></param>
/// <returns></returns>
private static object EncryptPropertyValue(ORMappingItem item, object originalData)
{
object result = originalData;
if (originalData != null && originalData != DBNull.Value)
{
if (originalData is string == false || (string)originalData != string.Empty)
{
ISymmetricEncryption encryptor = ORMappingItemEncryptionHelper.GetEncryptor(item.EncryptorName);
result = encryptor.EncryptString(originalData.ToString()).ToBase16String();
}
}
return(result);
}
private static ORMappingItem FindItemBySubClassPropertyName(string subPropertyName, ORMappingItemCollection items)
{
ORMappingItem result = null;
foreach (ORMappingItem item in items)
{
if (item.SubClassPropertyName == subPropertyName)
{
result = item;
break;
}
}
return(result);
}
private static object ConvertData(ORMappingItem item, object data)
{
try
{
System.Type realType = GetRealType(item.MemberInfo);
return(DataConverter.ChangeType(data, realType));
}
catch (System.Exception ex)
{
throw new SystemSupportException(
string.Format(Resource.ConvertDataFieldToPropertyError,
item.DataFieldName, item.PropertyName, ex.Message),
ex
);
}
}
private static object GetValueFromObject(ORMappingItem item, object graph)
{
object data = null;
if (string.IsNullOrEmpty(item.SubClassPropertyName))
{
data = GetValueFromObjectDirectly(item, graph);
if (item.EncryptProperty)
{
data = EncryptPropertyValue(item, data);
}
}
else
{
if (graph != null)
{
MemberInfo mi = TypePropertiesWithNonPublicCacheQueue.Instance.GetPropertyInfoDirectly(graph.GetType(), item.PropertyName);
if (mi == null)
{
mi = graph.GetType().GetField(item.PropertyName,
BindingFlags.Instance | BindingFlags.Public);
}
if (mi != null)
{
object subGraph = GetMemberValueFromObject(mi, graph);
if (subGraph != null)
{
data = GetValueFromObjectDirectly(item, subGraph);
if (data != null && item.EncryptProperty)
{
data = EncryptPropertyValue(item, data);
}
}
}
}
}
return(data);
}
/// <summary>
/// 复制一个MappingItem
/// </summary>
/// <returns></returns>
public ORMappingItem Clone()
{
ORMappingItem newItem = new ORMappingItem();
newItem.dataFieldName = this.dataFieldName;
newItem.propertyName = this.propertyName;
newItem.subClassPropertyName = this.subClassPropertyName;
newItem.isIdentity = this.isIdentity;
newItem.primaryKey = this.primaryKey;
newItem.length = this.length;
newItem.isNullable = this.isNullable;
newItem.subClassTypeDescription = this.subClassTypeDescription;
newItem.bindingFlags = this.bindingFlags;
newItem.defaultExpression = this.defaultExpression;
newItem.memberInfo = this.memberInfo;
newItem.enumUsage = this.enumUsage;
newItem.encryptProperty = this.encryptProperty;
newItem.encryptorName = this.encryptorName;
newItem.format = this.format;
return(newItem);
}
private static object DecryptPropertyValue(ORMappingItem item, object originalData)
{
object result = originalData;
if (originalData is string)
{
string stringValue = (string)originalData;
if (stringValue.IsNotEmpty())
{
try
{
ISymmetricEncryption encryptor = ORMappingItemEncryptionHelper.GetEncryptor(item.EncryptorName);
result = encryptor.DecryptString(stringValue.ToBase16Bytes());
}
catch (System.FormatException)
{
}
}
}
return(result);
}
private static void DoSelectSqlClauseBuilder <TBuilder, T>(TBuilder builder, ORMappingItem item, T graph) where TBuilder : SqlClauseBuilderIUW <TBuilder>
{
if (item.PrimaryKey == false)
{
object data = GetValueFromObject(item, graph);
if ((data == null || data == DBNull.Value || (data != null && data.Equals(TypeCreator.GetTypeDefaultValue(data.GetType())))))
{
if (item.DefaultExpression.IsNullOrEmpty())
{
builder.AppendItem(item.DataFieldName, "NULL", "");
}
else
{
builder.AppendItem(item.DataFieldName, item.DefaultExpression, "", true);
}
}
else
{
builder.AppendItem(item.DataFieldName, FormatValue(data, item));
}
}
}
private static void DoInsertUpdateSqlClauseBuilder <TBuilder, T>(TBuilder builder, ORMappingItem item, T graph) where TBuilder : SqlClauseBuilderIUW <TBuilder>
{
if (item.IsIdentity == false)
{
object data = GetValueFromObject(item, graph);
bool considerNull = data == null || data == DBNull.Value || (data != null && data.Equals(TypeCreator.GetTypeDefaultValue(data.GetType())));
if ((item.ForceUseDefaultExpression || considerNull) && item.DefaultExpression.IsNotEmpty())
{
builder.AppendItem(item.DataFieldName, item.DefaultExpression, SqlClauseBuilderBase.EqualTo, true);
}
else
{
builder.AppendItem(item.DataFieldName, FormatValue(data, item));
}
}
}
private static void DoWhereSqlClauseBuilderByPrimaryKey <TBuilder, T>(TBuilder builder, ORMappingItem item, T graph) where TBuilder : SqlClauseBuilderIUW <TBuilder>
{
if (item.PrimaryKey)
{
object data = GetValueFromObject(item, graph);
if ((data == null || data == DBNull.Value))
{
builder.AppendItem(item.DataFieldName, data, SqlClauseBuilderBase.Is);
}
else
{
builder.AppendItem(item.DataFieldName, data);
}
}
}
/// <summary>
/// 复制一个MappingItem
/// </summary>
/// <returns></returns>
public ORMappingItem Clone()
{
ORMappingItem newItem = new ORMappingItem();
newItem.dataFieldName = this.dataFieldName;
newItem.propertyName = this.propertyName;
newItem.subClassPropertyName = this.subClassPropertyName;
newItem.isIdentity = this.isIdentity;
newItem.primaryKey = this.primaryKey;
newItem.length = this.length;
newItem.isNullable = this.isNullable;
newItem.subClassTypeDescription = this.subClassTypeDescription;
newItem.bindingFlags = this.bindingFlags;
newItem.defaultExpression = this.defaultExpression;
newItem.memberInfo = this.memberInfo;
newItem.enumUsage = this.enumUsage;
newItem.encryptProperty = this.encryptProperty;
newItem.encryptorName = this.encryptorName;
newItem.format = this.format;
return newItem;
}
private static void DoInsertUpdateSqlClauseBuilder <T>(SqlClauseBuilderIUW builder, ORMappingItem item, T graph)
{
if (item.IsIdentity == false)
{
object data = GetValueFromObject(item, graph);
if ((data == null || data == DBNull.Value || (data != null && data.Equals(TypeCreator.GetTypeDefaultValue(data.GetType())))) &&
string.IsNullOrEmpty(item.DefaultExpression) == false)
{
builder.AppendItem(item.DataFieldName, item.DefaultExpression, SqlClauseBuilderBase.EqualTo, true);
}
else
{
builder.AppendItem(item.DataFieldName, FormatValue(data, item));
}
}
}
private static void FillMappingItemByEncryptionAttr(ORMappingItem item, PropertyEncryptionAttribute pea)
{
item.EncryptProperty = true;
item.EncryptorName = pea.EncryptorName;
}
private static void DoWhereSqlClauseBuilderByChangedFieldsWithoutPrimaryKey <TBuilder, T>(TBuilder builder, ORMappingItem item, T graph) where TBuilder : SqlClauseBuilderIUW <TBuilder>
{
if (item.PrimaryKey == false)
{
object data = GetValueFromObject(item, graph);
if ((data == null || data == DBNull.Value))
{
builder.AppendItem(item.DataFieldName, data, SqlClauseBuilderBase.IsNot);
}
else
{
builder.AppendItem(item.DataFieldName, FormatValue(data, item), SqlClauseBuilderBase.NotEqualTo);
}
}
}
