I was wondering if anyone knew how to find what column an entity's property is mapped to using NHibernate and only having the IEntityPersister
interface available.
我想知道是否有人知道如何使用NHibernate找到实体的属性映射到的列,并且只有IEntityPersister接口可用。
2 个解决方案
#1
0
You could parse the mapping file if you are using one. It's fairly simple xml so a simple xpath query would get you the column name. If you are using attributes you would have to use reflection to get the attribute from the property.
如果使用映射文件,则可以解析映射文件。它是相当简单的xml,因此一个简单的xpath查询可以获得列名。如果使用属性,则必须使用反射从属性中获取属性。
#2
0
Here is some code that might help.
以下是一些可能有用的代码。
public static string[] GetDatabaseColumnNamesFromEntityProperty(Type entityType, string propertyName)
{
PersistentClass aNHibernateClass = NHibernateSessionManager.Instance.GetNHibernateConfiguration().GetClassMapping(entityType);
if (aNHibernateClass == null)
{
return null;
}
else
{
string[] columnNames = null;
try
{
Property aProperty = aNHibernateClass.GetProperty(propertyName);
columnNames = new string[aProperty.ColumnCollection.Count];
int count = 0;
foreach (Column column in aProperty.ColumnCollection)
{
columnNames[count] = column.Name;
count++;
}
}
catch(Exception)
{
Property aProperty = aNHibernateClass.IdentifierProperty;
//if(aProperty.Name.Equals(propertyName))
//{
columnNames = new string[aProperty.ColumnCollection.Count];
int count = 0;
foreach (Column column in aProperty.ColumnCollection)
{
columnNames[count] = column.Name;
count++;
}
//}
}
return columnNames;
}
}
#1
0
You could parse the mapping file if you are using one. It's fairly simple xml so a simple xpath query would get you the column name. If you are using attributes you would have to use reflection to get the attribute from the property.
如果使用映射文件,则可以解析映射文件。它是相当简单的xml,因此一个简单的xpath查询可以获得列名。如果使用属性,则必须使用反射从属性中获取属性。
#2
0
Here is some code that might help.
以下是一些可能有用的代码。
public static string[] GetDatabaseColumnNamesFromEntityProperty(Type entityType, string propertyName)
{
PersistentClass aNHibernateClass = NHibernateSessionManager.Instance.GetNHibernateConfiguration().GetClassMapping(entityType);
if (aNHibernateClass == null)
{
return null;
}
else
{
string[] columnNames = null;
try
{
Property aProperty = aNHibernateClass.GetProperty(propertyName);
columnNames = new string[aProperty.ColumnCollection.Count];
int count = 0;
foreach (Column column in aProperty.ColumnCollection)
{
columnNames[count] = column.Name;
count++;
}
}
catch(Exception)
{
Property aProperty = aNHibernateClass.IdentifierProperty;
//if(aProperty.Name.Equals(propertyName))
//{
columnNames = new string[aProperty.ColumnCollection.Count];
int count = 0;
foreach (Column column in aProperty.ColumnCollection)
{
columnNames[count] = column.Name;
count++;
}
//}
}
return columnNames;
}
}