/// <summary>
/// 由一行数据生成一个实体
/// </summary>
/// <typeparam name="T">目标实体类型</typeparam>
/// <param name="dataRow">数据行</param>
/// <param name="smartMappingType">反射方式</param>
/// <param name="item">已实例化的实体</param>
/// <param name="propertyInfos">属性</param>
/// <param name="fieldInfos">字段</param>
private static void GetEntity <T>(this DataRow dataRow, FrameMappingType smartMappingType, ref T item, PropertyInfo[] propertyInfos = null, FieldInfo[] fieldInfos = null)
{
Type itemType = item.GetType();
switch (smartMappingType)
{
case FrameMappingType.FrameAttributePublic: ////在公有字段或属性中查找特性
case FrameMappingType.FrameAttributePrivate: ////在私有字段或属性中查找特性
case FrameMappingType.FrameAttribute: ////在所有字段或属性中查找特性
{
////设置属性的值
foreach (PropertyInfo propertyInfo in propertyInfos = propertyInfos != null ? propertyInfos : FrameReflection.GetPropertyInfoByAttribute <FrameColumnMappingAttributes>(itemType, smartMappingType))
{
FrameColumnMappingAttributes attribute = Attribute.GetCustomAttribute(propertyInfo, typeof(FrameColumnMappingAttributes), false) as FrameColumnMappingAttributes;
if (dataRow.Table.Columns.Contains(attribute.ColumnName))
{
object value = dataRow[attribute.ColumnName];
if (value == null || value.ToString().Trim() == string.Empty)
{
propertyInfo.SetValue(item, attribute.DefaultVale, null);
}
else
{
propertyInfo.SetValue(item, (value.GetType() == propertyInfo.PropertyType ? value : FrameReflection.ConvertTo(value.ToString().Trim(), propertyInfo.PropertyType)), null);
}
}
else
{
propertyInfo.SetValue(item, attribute.DefaultVale, null);
}
}
////设置字段的值
foreach (FieldInfo fieldInfo in fieldInfos = fieldInfos != null ? fieldInfos : FrameReflection.GetFieldInfoByAttribute <FrameColumnMappingAttributes>(itemType, smartMappingType))
{
FrameColumnMappingAttributes attribute = Attribute.GetCustomAttribute(fieldInfo, typeof(FrameColumnMappingAttributes), false) as FrameColumnMappingAttributes;
if (dataRow.Table.Columns.Contains(attribute.ColumnName))
{
object value = dataRow[attribute.ColumnName];
if (value == null || value.ToString().Trim() == string.Empty)
{
fieldInfo.SetValue(item, attribute.DefaultVale);
}
else
{
fieldInfo.SetValue(item, (value.GetType() == fieldInfo.FieldType ? value : FrameReflection.ConvertTo(value.ToString().Trim(), fieldInfo.FieldType)));
}
}
else
{
fieldInfo.SetValue(item, attribute.DefaultVale);
}
}
}
break;
case FrameMappingType.XmlElement:
case FrameMappingType.XmlElementPrivate:
case FrameMappingType.XmlElementPublic:
{
////设置属性的值
foreach (PropertyInfo propertyInfo in propertyInfos = propertyInfos != null ? propertyInfos : FrameReflection.GetPropertyInfoByAttribute <System.Xml.Serialization.XmlElementAttribute>(itemType, smartMappingType))
{
System.Xml.Serialization.XmlElementAttribute attribute = Attribute.GetCustomAttribute(propertyInfo, typeof(System.Xml.Serialization.XmlElementAttribute), false) as System.Xml.Serialization.XmlElementAttribute;
if (dataRow.Table.Columns.Contains(attribute.ElementName))
{
object value = dataRow[attribute.ElementName];
if (value == null || value.ToString().Trim() == string.Empty)
{
propertyInfo.SetValue(item, null, null);
}
else
{
propertyInfo.SetValue(item, (value.GetType() == propertyInfo.PropertyType ? value : FrameReflection.ConvertTo(value.ToString().Trim(), propertyInfo.PropertyType)), null);
}
}
else
{
propertyInfo.SetValue(item, null, null);
}
}
////设置字段的值
foreach (FieldInfo fieldInfo in fieldInfos = fieldInfos != null ? fieldInfos : FrameReflection.GetFieldInfoByAttribute <System.Xml.Serialization.XmlElementAttribute>(itemType, smartMappingType))
{
System.Xml.Serialization.XmlElementAttribute attribute = Attribute.GetCustomAttribute(fieldInfo, typeof(System.Xml.Serialization.XmlElementAttribute), false) as System.Xml.Serialization.XmlElementAttribute;
if (dataRow.Table.Columns.Contains(attribute.ElementName))
{
object value = dataRow[attribute.ElementName];
if (value == null || value.ToString().Trim() == string.Empty)
{
fieldInfo.SetValue(item, null);
}
else
{
fieldInfo.SetValue(item, (value.GetType() == fieldInfo.FieldType ? value : FrameReflection.ConvertTo(value.ToString().Trim(), fieldInfo.FieldType)));
}
}
else
{
fieldInfo.SetValue(item, null);
}
}
}
break;
case FrameMappingType.Field: ////按字段映射，不区分公有私有
case FrameMappingType.FieldPrivate: ////按私有字段映射
case FrameMappingType.FieldPublic: ////按公有字段映射
{
////设置字段的值
foreach (FieldInfo fieldInfo in fieldInfos = fieldInfos != null ? fieldInfos : FrameReflection.GetFieldInfos(itemType, smartMappingType))
{
if (dataRow.Table.Columns.Contains(fieldInfo.Name))
{
object value = dataRow[fieldInfo.Name];
if (value != null && value.ToString().Trim() != string.Empty)
{
fieldInfo.SetValue(item, (value.GetType() == fieldInfo.FieldType ? value : FrameReflection.ConvertTo(value.ToString(), fieldInfo.FieldType)));
}
}
}
}
break;
case FrameMappingType.Property:
case FrameMappingType.ProertyPrivate:
case FrameMappingType.PropertyPublic:
{
////设置属性的值
foreach (PropertyInfo propertyInfo in propertyInfos = propertyInfos != null ? propertyInfos : FrameReflection.GetPropertyInfos(itemType, smartMappingType))
{
if (dataRow.Table.Columns.Contains(propertyInfo.Name))
{
object value = dataRow[propertyInfo.Name];
if (value != null && value.ToString().Trim() != string.Empty)
{
propertyInfo.SetValue(item, (value.GetType() == propertyInfo.PropertyType ? value : FrameReflection.ConvertTo(value.ToString(), propertyInfo.PropertyType)), null);
}
}
}
}
break;
}
}
/// <summary>
/// 根据映射方式获取实体或匿名对象的字段以及对应值的 Dictionary 列表
/// </summary>
/// <param name="item">实体或匿名实体</param>
/// <param name="smartMappingType">映射方式</param>
/// <returns>字段或属性名称，值列表</returns>
public static Dictionary <string, object> GetColumnDic(object item, FrameMappingType smartMappingType)
{
Type itemType = item.GetType();
Dictionary <string, object> list = new Dictionary <string, object>();
switch (smartMappingType)
{
case FrameMappingType.FrameAttributePublic: ////公有特性
case FrameMappingType.FrameAttributePrivate: ////私有特性
case FrameMappingType.FrameAttribute: ////根据特性映射，不区分公有私有
{
////根据特性标识设置属性
foreach (PropertyInfo propertyInfo in FrameReflection.GetPropertyInfoByAttribute <FrameColumnMappingAttributes>(itemType, smartMappingType))
{
FrameColumnMappingAttributes attribute = Attribute.GetCustomAttribute(propertyInfo, typeof(FrameColumnMappingAttributes), false) as FrameColumnMappingAttributes;
object value = propertyInfo.GetValue(item, null);
list.Add(attribute.ColumnName, value);
}
////根据特性标识设置字段
foreach (FieldInfo fieldInfo in FrameReflection.GetFieldInfoByAttribute <FrameColumnMappingAttributes>(itemType, smartMappingType))
{
FrameColumnMappingAttributes attribute = Attribute.GetCustomAttribute(fieldInfo, typeof(FrameColumnMappingAttributes), false) as FrameColumnMappingAttributes;
object value = fieldInfo.GetValue(item);
list.Add(attribute.ColumnName, value);
}
}
break;
case FrameMappingType.XmlElementPublic: ////公有XmlElement
case FrameMappingType.XmlElementPrivate: ////私有XmlElement
case FrameMappingType.XmlElement: ////根据XmlElement映射，不区分公有私有
{
////根据特性标识设置属性
foreach (PropertyInfo propertyInfo in FrameReflection.GetPropertyInfoByAttribute <System.Xml.Serialization.XmlElementAttribute>(itemType, smartMappingType))
{
System.Xml.Serialization.XmlElementAttribute attribute = Attribute.GetCustomAttribute(propertyInfo, typeof(System.Xml.Serialization.XmlElementAttribute), false) as System.Xml.Serialization.XmlElementAttribute;
object value = propertyInfo.GetValue(item, null);
list.Add(attribute.ElementName, value);
}
////根据特性标识设置字段
foreach (FieldInfo fieldInfo in FrameReflection.GetFieldInfoByAttribute <System.Xml.Serialization.XmlElementAttribute>(itemType, smartMappingType))
{
System.Xml.Serialization.XmlElementAttribute attribute = Attribute.GetCustomAttribute(fieldInfo, typeof(System.Xml.Serialization.XmlElementAttribute), false) as System.Xml.Serialization.XmlElementAttribute;
object value = fieldInfo.GetValue(item);
list.Add(attribute.ElementName, value);
}
}
break;
case FrameMappingType.Field: ////根据字段映射，私有公有均可
case FrameMappingType.FieldPrivate: ////根据私有字段映射
case FrameMappingType.FieldPublic: ////根据公有字段映射
{
foreach (FieldInfo fieldInfo in FrameReflection.GetFieldInfos(itemType, smartMappingType))
{
object value = fieldInfo.GetValue(item);
list.Add(fieldInfo.Name, value);
}
}
break;
case FrameMappingType.Property: ////根据属性映射 私有公有均可
case FrameMappingType.PropertyPublic: ////根据公有属性映射
case FrameMappingType.ProertyPrivate: ////根据私有属性映射
{
foreach (PropertyInfo propertyInfo in FrameReflection.GetPropertyInfos(itemType, smartMappingType))
{
object value = propertyInfo.GetValue(item, null);
list.Add(propertyInfo.Name, value);
}
}
break;
}
return(list);
}
/// <summary>
/// 根据用户自定义特性获取实体或匿名对象的字段以及对应值的 Dictionary 列表
/// </summary>
/// <typeparam name="TAttribute">用户自定义特性</typeparam>
/// <param name="item">实体或匿名实体</param>
/// <param name="mapingPropertyName">自定应特性映射的字段</param>
/// <returns>返回实体或匿名对象根据用户自定应特性获得字段以及值的列表</returns>
public static Dictionary <string, object> GetColumnDicByUserAttribute <TAttribute>(object item, string mapingPropertyName) where TAttribute : Attribute
{
Type attrType = typeof(TAttribute);
Type itemType = item.GetType();
Dictionary <string, object> list = new Dictionary <string, object>();
string paramName = string.Empty;
////根据特性标识设置属性
foreach (PropertyInfo propertyInfo in FrameReflection.GetPropertyInfoByAttribute <TAttribute>(itemType, FrameMappingType.FrameAttribute))
{
TAttribute attribute = Attribute.GetCustomAttribute(propertyInfo, typeof(TAttribute), false) as TAttribute;
object value = propertyInfo.GetValue(item, null);
if (attribute != null)
{
if (mapingPropertyName.IsNullOrEmptyOrBlank())
{
paramName = propertyInfo.Name;
}
else
{
PropertyInfo attrProperty = attrType.GetProperty(mapingPropertyName);
paramName = attrProperty.GetValue(attribute, null).ToString();
}
if (list.ContainsKey(paramName))
{
list[paramName] = value;
}
else
{
list.Add(paramName, value);
}
}
}
////根据特性标识设置字段
foreach (FieldInfo fieldInfo in FrameReflection.GetFieldInfoByAttribute <TAttribute>(itemType, FrameMappingType.FrameAttribute))
{
TAttribute attribute = Attribute.GetCustomAttribute(fieldInfo, typeof(TAttribute), false) as TAttribute;
object value = fieldInfo.GetValue(item);
if (attribute != null)
{
if (mapingPropertyName.IsNullOrEmptyOrBlank())
{
paramName = fieldInfo.Name;
}
else
{
PropertyInfo attrProperty = attrType.GetProperty(mapingPropertyName);
paramName = attrProperty.GetValue(attribute, null).ToString();
}
if (list.ContainsKey(paramName))
{
list[paramName] = value;
}
else
{
list.Add(paramName, value);
}
}
}
return(list);
}
