/// <summary>
/// 获取指定名称的属性元素对象。
/// </summary>
/// <param name="name">指定的属性名称，支持以点(.)为分隔符的属性名路径。</param>
/// <returns>返回找到的属性元素，如果没有找到指定路径的属性元素则返回空(null)。</returns>
public MetadataEntityProperty GetProperty(string name)
{
if (string.IsNullOrWhiteSpace(name))
{
return(null);
}
var parts = name.Split('.');
var entity = this;
MetadataEntityProperty property = null;
foreach (var part in parts)
{
while (entity != null)
{
property = entity.Properties[part];
if (property == null)
{
entity = entity.BaseEntity;
}
else
{
var complexProperty = property as MetadataEntityComplexProperty;
if (complexProperty != null)
{
entity = complexProperty.Relationship.GetToEntity();
}
break;
}
}
if (property == null)
{
return(null);
}
}
return(property);
}
private MetadataEntityProperty[] GetEntityReferences(string memberName)
{
var association = this.Association;
if (association == null)
{
return(null);
}
var entity = association.Members[memberName].Entity;
var refNames = association.Members[memberName].Properties;
var refs = new MetadataEntityProperty[refNames.Length];
for (int i = 0; i < refs.Length; i++)
{
refs[i] = entity.Properties[refNames[i]];
}
return(refs);
}