/// <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 FillSqlClauseBuilder <T>(
SqlClauseBuilderIUW builder,
T graph,
ORMappingItemCollection mapping,
ClauseBindingFlags bindingFlags,
DoSqlClauseBuilder <T> builderDelegate,
params string[] ignoreProperties)
{
ExceptionHelper.FalseThrow <ArgumentNullException>(graph != null, "graph");
using (ORMappingContext context = ORMappingContext.GetContext())
{
foreach (ORMappingItem item in mapping)
{
if (Array.Exists <string>(ignoreProperties, target => (string.Compare(target, item.PropertyName, true) == 0)
) == false)
{
if ((item.BindingFlags & bindingFlags) != ClauseBindingFlags.None)
{
builderDelegate(builder, item, graph);
}
}
}
}
builder.AppendTenantCode(typeof(T));
}
/// <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>
/// 读取字段的主键的键值对
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="graph"></param>
/// <param name="ignoreProperties"></param>
/// <returns></returns>
public static Dictionary <string, object> GetPrimaryKeyValuePairs <T>(T graph, params string[] ignoreProperties)
{
Dictionary <string, object> result = new Dictionary <string, object>();
ExceptionHelper.FalseThrow <ArgumentNullException>(graph != null, "graph");
ORMappingItemCollection mapping = InnerGetMappingInfoByObject(graph);
using (ORMappingContext context = ORMappingContext.GetContext())
{
foreach (ORMappingItem item in mapping)
{
if (Array.Exists <string>(ignoreProperties, target => (string.Compare(target, item.PropertyName, true) == 0)
) == false)
{
if (item.PrimaryKey)
{
result[item.PropertyName] = GetValueFromObject(item, graph);
}
}
}
}
return(result);
}
/// <summary>
/// DataReader到Collection
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="collection"></param>
/// <param name="dr"></param>
/// <param name="dod"></param>
/// <returns>返回原有的集合</returns>
public static EditableDataObjectCollectionBase <T> DataReaderToCollection <T>(EditableDataObjectCollectionBase <T> collection, IDataReader dr, DataToObjectDeligations dod) where T : new()
{
dr.NullCheck("dr");
using (ORMappingContext context = ORMappingContext.GetContext())
{
while (dr.Read())
{
collection.Add(DataReaderToObject(dr, new T(), dod));
}
}
return(collection);
}
/// <summary>
/// DataView的数据转换到集合中
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="collection"></param>
/// <param name="view"></param>
/// <param name="dod"></param>
/// <returns>返回原有的集合</returns>
public static EditableDataObjectCollectionBase <T> DataViewToCollection <T>(EditableDataObjectCollectionBase <T> collection, DataView view, DataToObjectDeligations dod) where T : new()
{
collection.NullCheck("collection");
view.NullCheck("view");
using (ORMappingContext context = ORMappingContext.GetContext())
{
foreach (DataRowView drv in view)
{
collection.Add(DataRowToObject(drv.Row, new T(), dod));
}
}
return(collection);
}
/// <summary>
/// DataReader到Collection
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="collection"></param>
/// <param name="dr"></param>
/// <param name="dod"></param>
public static void DataReaderToCollection <T>(EditableDataObjectCollectionBase <T> collection, IDataReader dr, DataToObjectDeligations dod) where T : new()
{
dr.NullCheck("dr");
using (ORMappingContext context = ORMappingContext.GetContext())
{
while (dr.Read())
{
T graph = new T();
DataReaderToObject(dr, graph, dod);
collection.Add(graph);
}
}
}
/// <summary>
/// DataView的数据转换到集合中
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="collection"></param>
/// <param name="view"></param>
/// <param name="dod"></param>
public static void DataViewToCollection <T>(EditableDataObjectCollectionBase <T> collection, DataView view, DataToObjectDeligations dod) where T : new()
{
collection.NullCheck("collection");
view.NullCheck("view");
using (ORMappingContext context = ORMappingContext.GetContext())
{
foreach (DataRowView drv in view)
{
T graph = new T();
DataRowToObject(drv.Row, graph, dod);
collection.Add(graph);
}
}
}
/// <summary>
/// 根据对象拼Insert语句
/// </summary>
/// <typeparam name="T">对象类型</typeparam>
/// <param name="graph">对象</param>
/// <param name="mapping">映射关系</param>
/// <param name="builder">生成Sql语句类型的Builder如TSqlBuilder或PlSqlBuilder</param>
/// <param name="ignoreProperties">忽略的字段</param>
/// <returns>根据传入的对象和对象映射时需要忽略的字段以及类定义上的表名，生成完整的Insert语句</returns>
public static string GetUpdateSql <T>(T graph, ORMappingItemCollection mapping, ISqlBuilder builder, params string[] ignoreProperties)
{
ExceptionHelper.FalseThrow <ArgumentNullException>(graph != null, "graph");
ExceptionHelper.FalseThrow <ArgumentNullException>(mapping != null, "mapping");
ExceptionHelper.FalseThrow <ArgumentNullException>(builder != null, "builder");
using (ORMappingContext context = ORMappingContext.GetContext())
{
UpdateSqlClauseBuilder updateBuilder = GetUpdateSqlClauseBuilder(graph, mapping, ignoreProperties);
WhereSqlClauseBuilder whereBuilder = GetWhereSqlClauseBuilderByPrimaryKey(graph, mapping);
return(string.Format("UPDATE {0} SET {1} WHERE {2}",
mapping.TableName,
updateBuilder.ToSqlString(builder),
whereBuilder.ToSqlString(builder)));
}
}
public static ORMappingContext GetContext()
{
object objContext = null;
ORMappingContext context = new ORMappingContext();
if (ObjectContextCache.Instance.TryGetValue(ORMappingContext.ORMappingContextKey, out objContext))
{
//如果已经存在，则返回的实例中，指向原始的context
context = new ORMappingContext();
context.OriginalContext = (ORMappingContext)objContext;
}
else
{
//新创建的context是第一次使用的context
context = new ORMappingContext();
context.OriginalContext = context;
ObjectContextCache.Instance.Add(ORMappingContext.ORMappingContextKey, context);
}
return context;
}
/// <summary>
/// 得到加密器
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
public static ISymmetricEncryption GetEncryptor(string name)
{
ISymmetricEncryption result = null;
using (ORMappingContext context = ORMappingContext.GetContext())
{
if (name.IsNullOrEmpty())
{
name = "DefaultPropertyEncryptor";
}
result = context.ItemEncryptors[name];
if (result == null)
{
result = new ORMappintItemEncryption(name);
context.ItemEncryptors.Add((ORMappintItemEncryption)result);
}
}
return(result);
}
