private void Scan()
{
_logger.Debug("开始搜索扩展和扩展点...");
foreach (IBundle bundle in _bundleService.Bundles)
{
_logger.DebugFormat(" 从程序序集 '{0}' 中搜索 id 为 '{1}' 名为 '{2}' 的Bundle.", bundle.AssemblyLocation, bundle.Id, bundle.Name);
foreach (IExtensionConfiguration extCfg in bundle.ContributedExtensions)
{
IExtension ext = new Extension(extCfg, _extensionBuilder);
IExtension old = null;
if (_extensions.TryGetValue(ext.Id, out old))
{
throw new InvalidOperationException(string.Format(
"扩展Id重复,'{0}' 已存在于 '{1}'中,在 '{2}' 又发现了.", ext.Id, old.BundleId, ext.BundleId));
}
else
{
_extensions[ext.Id] = ext;
_logger.DebugFormat(" 添加扩展 id='{0}' name='{1}' .", ext.Id, ext.Name);
}
}
foreach (IExtensionPointConfiguration pointCfg in bundle.ContributedExtensionPoints)
{
IExtensionPoint point = new ExtensionPoint(pointCfg);
IExtensionPoint old = null;
if (_extensionPoints.TryGetValue(point.Id, out old))
{
throw new InvalidOperationException(string.Format(
"扩展点Id重复,'{0}' 已存在于 '{1}'中,在 '{2}' 又发现了.", point.Id, old.BundleId, point.BundleId));
}
else
{
_extensionPoints[point.Id] = point;
_logger.DebugFormat(" 添加扩展点 id='{0}' name='{1}' .", point.Id, point.Name);
}
}
}
foreach (IExtension ext in _extensions.Values)
{
string point = ext.Point;
if (string.IsNullOrEmpty(point))
{
_logger.WarnFormat("扩展[ id='{0}' name='{1}']的扩展点属性是空白的.", ext.Id, ext.Name);
continue;
}
IExtensionPoint ep;
if (_extensionPoints.TryGetValue(point, out ep))
{
((ExtensionPoint)ep).AddExtension(ext);
}
else
{
_logger.WarnFormat("没有为扩展[ id='{0}' name='{1}']找到扩展点 '{2}'.", ext.Id, ext.Name, ext.Point);
}
}
_logger.Debug("搜索扩展和扩展点完成." + Environment.NewLine + Environment.NewLine + ToString());
}
void IXmlSerializable.ReadXml(XmlReader reader)
{
if (!reader.IsStartElement("extensionRegistry"))
{
throw new InvalidOperationException(
string.Concat("无效配置.期望节点是 'extensionRegistry 便实际是 '", reader.LocalName, "'."));
}
reader.ReadStartElement("extensionRegistry");
if (!reader.IsStartElement("extensionPoints"))
{
throw new InvalidOperationException(
string.Concat("无效配置.期望节点是 'extensionRegistry 便实际是 '", reader.LocalName, "'."));
}
if (reader.IsEmptyElement)
{
reader.ReadStartElement("extensionPoints");
}
else
{
reader.ReadStartElement("extensionPoints");
while (reader.IsStartElement("extensionPoint"))
{
ExtensionPointConfiguration cfg = new ExtensionPointConfiguration();
cfg.ReadXml(reader);
List <ExtensionConfiguration> extensionConfigs = new List <ExtensionConfiguration>();
XmlUtils.ReadElementsIntoList <ExtensionConfiguration>(reader, "extensions", "extension", extensionConfigs);
IExtensionPoint point = new ExtensionPoint(cfg);
_registry._extensionPoints.Add(point.Id, point);
for (int i = 0; i < extensionConfigs.Count; i++)
{
IExtension ext = new Extension(extensionConfigs[i], _extensionBuilder);
_registry._extensions.Add(ext.Id, ext);
((ExtensionPoint)point).AddExtension(ext);
}
}
reader.ReadEndElement();
}
if (reader.IsStartElement("extensions"))
{
if (reader.IsEmptyElement)
{
reader.ReadStartElement("extensions");
}
else
{
// read the orphans
reader.ReadStartElement("extensions");
while (reader.IsStartElement("extension"))
{
ExtensionConfiguration extCfg = ExtensionConfiguration.FromXml(reader);
if (!_registry._extensions.ContainsKey(extCfg.Id))
{
IExtension ext = new Extension(extCfg, _extensionBuilder);
_registry._extensions.Add(ext.Id, ext);
}
}
reader.ReadEndElement();
}
}
reader.ReadEndElement(); //</extensionRegistry>
}
