/// <summary>
/// 从POCO实体类获取跟当前实体类的属性名称相同的属性的值，拷贝到当前实体类中，完成数据的映射。
/// 要求拷贝的同名属性是读写属性且类型相同。
/// </summary>
/// <param name="pocoClass">POCO实体类，提供源数据</param>
/// <param name="isChange">是否改变属性的修改状态</param>
/// <returns>映射成功的属性数量</returns>
public int MapFrom(object pocoClass, bool isChange)
{
if (pocoClass == null)
{
return(0);
}
int count = 0;
int fcount = this.PropertyNames.Length;
INamedMemberAccessor[] accessors = new INamedMemberAccessor[fcount];
DelegatedReflectionMemberAccessor drm = new DelegatedReflectionMemberAccessor();
Type type = pocoClass.GetType();
var ef = EntityFieldsCache.Item(this.GetType());
for (int i = 0; i < fcount; i++)
{
//实体类的属性字段可能跟属性名称不一样 edit at 2015.2.11
string perpertyName = ef.GetPropertyName(PropertyNames[i]);
accessors[i] = drm.TryFindAccessor(type, perpertyName);
}
for (int i = 0; i < fcount; i++)
{
if (accessors[i] != null)
{
this.PropertyValues[i] = accessors[i].GetValue(pocoClass);
if (isChange) //设置属性修改状态
{
this.changedlist[i] = true;
}
count++;
}
}
return(count);
}
/// <summary>
/// 将当前实体类的属性值映射到相同属性名称的POCO实体类中。要求拷贝的同名属性是读写属性且类型相同。
/// </summary>
/// <param name="pocoClass">POCO实体类</param>
/// <returns>映射成功的属性数量</returns>
public int MapToPOCO(object pocoClass)
{
if (pocoClass == null)
{
return(0);
}
int count = 0;
int fcount = this.PropertyNames.Length;
INamedMemberAccessor[] accessors = new INamedMemberAccessor[fcount];
DelegatedReflectionMemberAccessor drm = new DelegatedReflectionMemberAccessor();
Type type = pocoClass.GetType();
for (int i = 0; i < fcount; i++)
{
accessors[i] = drm.TryFindAccessor(type, PropertyNames[i]);
}
for (int i = 0; i < fcount; i++)
{
if (accessors[i] != null)
{
accessors[i].SetValue(pocoClass, this.PropertyValues[i]);
count++;
}
}
return(count);
}
/// <summary>
/// 将当前实体类的属性值（非空值）映射到相同属性名称的POCO实体类中。要求拷贝的同名属性是读写属性且类型相同。
/// </summary>
/// <param name="pocoClass">POCO实体类</param>
/// <returns>映射成功的属性数量</returns>
public int MapToPOCO(object pocoClass)
{
if (pocoClass == null)
{
return(0);
}
int count = 0;
int fcount = this.PropertyNames.Length;
INamedMemberAccessor[] accessors = new INamedMemberAccessor[fcount];
DelegatedReflectionMemberAccessor drm = new DelegatedReflectionMemberAccessor();
Type type = pocoClass.GetType();
var ef = EntityFieldsCache.Item(this.GetType());
for (int i = 0; i < fcount; i++)
{
//实体类的属性字段可能跟属性名称不一样 edit at 2015.10.24
string perpertyName = ef.GetPropertyName(PropertyNames[i]);
accessors[i] = drm.TryFindAccessor(type, perpertyName);
}
for (int i = 0; i < fcount; i++)
{
if (accessors[i] != null)
{
//this.PropertyValues[i] 可能为空，这会导致下面的赋值报错
//这种情况可能发生在实体类的数据是经过OQL部分Select 字段造成的，或者字段本身的值为NULL
object Value = this.PropertyValues[i];
if (Value != null && Value != DBNull.Value)
{
accessors[i].SetValue(pocoClass, this.PropertyValues[i]);
count++;
}
}
}
return(count);
}