/// <summary>
/// 获取枚举
/// 可能返回 null
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
public EnumEntity GetEnumEntity(string id)
{
//首先尝试从缓存中获取
XElement cachingElement = (XElement)_cachingService.GetData(id);
string strEntity;
if (cachingElement == null)
{
string file = Path.Combine(Constant.PACKAGE_DICTIONARY_FOLDER, id);
bool fileExist = _packageService.Current.Container(file);
Debug.Assert(fileExist, "枚举文件不存在");
if (fileExist == false)
{
return(null);
}
strEntity = _packageService.Current.GetFileContent(file);
XElement entityElement = XElement.Parse(strEntity);
_cachingService.Add(id, entityElement);
}
else
{
strEntity = cachingElement.ToString();
}
EnumEntityDev enumEntity = new EnumEntityDev();
enumEntity.FromXml(strEntity);
return(enumEntity);
}
//TODO:更名为remove
/// <summary>
/// 删除枚举
/// </summary>
/// <param name="id"></param>
public void Delete(EnumEntityDev enumEntity)
{
Debug.Assert(enumEntity != null, "enumEntity 为 null");
if (enumEntity == null)
{
return;
}
//移除索引信息
XElement element = _indexXml.XPathSelectElement(String.Format(XPATH_Index_SelectDictionary, enumEntity.Id));
Debug.Assert(element != null, "删除枚举索引时未找到指定枚举的索引记录");
if (element != null)
{
element.Remove();
SaveIndexFile();
//移除实体文件
_packageService.Current.DeleteFile(Path.Combine(Constant.PACKAGE_DICTIONARY_FOLDER, enumEntity.Id));
_cachingService.Remove(enumEntity.Id);
//发布事件
EnumEventArgs args = new EnumEventArgs(enumEntity);
_eventAggregator.GetEvent <EnumRemovedEvent>().Publish(args);
}
}
/// <summary>
/// 更新枚举
/// </summary>
/// <param name="dataEntity"></param>
public void Update(EnumEntityDev enumEntity)
{
Debug.Assert(enumEntity != null, "enumEntity 为 null");
if (enumEntity == null)
{
return;
}
//更新索引信息
XElement element = _indexXml.XPathSelectElement(String.Format(XPATH_Index_SelectDictionary, enumEntity.Id));
Debug.Assert(element != null, "更新枚举索引时未找到指定枚举的索引记录");
if (element != null)
{
element.ReplaceWith(ArchiveHelper.GetEntityArchiveIndex(enumEntity));
SaveIndexFile();
string xml = enumEntity.ToXml();
XElement xElement = XElement.Parse(xml);
//更新数据实体文件
_packageService.Current.AddFileContent(xml, Path.Combine(Constant.PACKAGE_DICTIONARY_FOLDER, enumEntity.Id));
_cachingService.Add(enumEntity.Id, xElement);
//发布事件
EnumEventArgs args = new EnumEventArgs(enumEntity);
_eventAggregator.GetEvent <EnumUpdatedEvent>().Publish(args);
}
}
/// <summary>
/// 添加一个枚举
/// </summary>
/// <param name="enumEntity"></param>
public void Add(EnumEntityDev enumEntity)
{
Debug.Assert(enumEntity != null, "enumEntity 为 null");
if (enumEntity == null)
{
return;
}
//添加索引信息
_indexXml.XPathSelectElement(XPATH_Index_Dictionary).Add(ArchiveHelper.GetEntityArchiveIndex(enumEntity));
SaveIndexFile();
string xml = enumEntity.ToXml();
XElement xElement = XElement.Parse(xml);
//添加数据实体文件
_packageService.Current.AddFileContent(xml, Path.Combine(Constant.PACKAGE_DICTIONARY_FOLDER, enumEntity.Id));
_cachingService.Add(enumEntity.Id, xElement);
//发布事件
EnumEventArgs args = new EnumEventArgs(enumEntity);
_eventAggregator.GetEvent <EnumAddedEvent>().Publish(args);
}
//public EnumItemEntityDev GetEnumItemEntity(string id)
/// <summary>
/// 获取枚举项
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
public EnumItemEntityDev GetItemEntity(string id, EnumEntityDev enumEntity)
{
if (String.IsNullOrEmpty(id) || enumEntity == null)
{
Debug.Assert(false, "参数异常");
return(null);
}
string enumId = enumEntity.Id;
//判断指定的数据实体是否存在
bool entityExist = EntityExistById(enumId);
Debug.Assert(entityExist, "枚举不存在");
if (entityExist == false)
{
return(null);
}
//在数据实体XML中拿出数据项节点
XElement entityElement = (XElement)_cachingService.GetData(enumId);
string strEntity;
if (entityElement == null)
{
//拿数据实体文件
string file = Path.Combine(Constant.PACKAGE_DICTIONARY_FOLDER, enumId);
bool fileExist = _packageService.Current.Container(file);
Debug.Assert(fileExist, "枚举文件不存在");
if (fileExist == false)
{
return(null);
}
strEntity = _packageService.Current.GetFileContent(file);
entityElement = XElement.Parse(strEntity);
_cachingService.Add(enumId, entityElement);
}
XElement itemElement = entityElement.XPathSelectElement(String.Format(XPATH_Dictionary_SelectItem, id));
if (itemElement == null)
{
return(null);
}
EnumItemEntityDev dataItemEntity = new EnumItemEntityDev(enumEntity);
dataItemEntity.FromXml(itemElement.ToString());
return(dataItemEntity);
}
/// <summary>
/// 提交
/// 根据enumEntity的Id进行判断，如果已存在，调用update，如果不存在，调用add
/// </summary>
/// <param name="dataEntity"></param>
public void Commit(EnumEntityDev enumEntity)
{
Debug.Assert(enumEntity != null, "enumEntity 为 null");
if (enumEntity == null)
{
return;
}
if (EntityExistById(enumEntity.Id))
{
Update(enumEntity);
}
else
{
Add(enumEntity);
}
}
