Java SolrCoreAware类代码示例

import org.apache.solr.util.plugin.SolrCoreAware; //导入依赖的package包/类
/**
 * Tell all {@link SolrCoreAware} instances about the SolrCore
 */
public void inform(SolrCore core) 
{
  this.dataDir = core.getDataDir();

  // make a copy to avoid potential deadlock of a callback calling newInstance and trying to
  // add something to waitingForCore.
  SolrCoreAware[] arr;

  while (waitingForCore.size() > 0) {
    synchronized (waitingForCore) {
      arr = waitingForCore.toArray(new SolrCoreAware[waitingForCore.size()]);
      waitingForCore.clear();
    }

    for( SolrCoreAware aware : arr) {
      aware.inform( core );
    }
  }

  // this is the last method to be called in SolrCore before the latch is released.
  live = true;
}
 

import org.apache.solr.util.plugin.SolrCoreAware; //导入依赖的package包/类
public synchronized SolrRequestHandler getWrappedHandler()
{
  if( _handler == null ) {
    try {
      SolrRequestHandler handler = core.createRequestHandler(_className);
      handler.init( _args );

      if( handler instanceof SolrCoreAware ) {
        ((SolrCoreAware)handler).inform( core );
      }
      _handler = handler;
    }
    catch( Exception ex ) {
      throw new SolrException( SolrException.ErrorCode.SERVER_ERROR, "lazy loading error", ex );
    }
  }
  return _handler;
}
 

import org.apache.solr.util.plugin.SolrCoreAware; //导入依赖的package包/类
public <T> T newInstance(String cname, Class<T> expectedType, String ... subpackages) {
  Class<? extends T> clazz = findClass(cname, expectedType, subpackages);
  if( clazz == null ) {
    throw new SolrException( SolrException.ErrorCode.SERVER_ERROR,
        "Can not find class: "+cname + " in " + classLoader);
  }
  
  T obj = null;
  try {
    obj = clazz.newInstance();
  } 
  catch (Exception e) {
    throw new SolrException( SolrException.ErrorCode.SERVER_ERROR,
        "Error instantiating class: '" + clazz.getName()+"'", e);
  }

  if (!live) {
    if( obj instanceof SolrCoreAware ) {
      assertAwareCompatibility( SolrCoreAware.class, obj );
      waitingForCore.add( (SolrCoreAware)obj );
    }
    if (org.apache.solr.util.plugin.ResourceLoaderAware.class.isInstance(obj)) {
      log.warn("Class [{}] uses org.apache.solr.util.plugin.ResourceLoaderAware " +
          "which is deprecated. Change to org.apache.lucene.analysis.util.ResourceLoaderAware.", cname);
    }
    if( obj instanceof ResourceLoaderAware ) {
      assertAwareCompatibility( ResourceLoaderAware.class, obj );
      waitingForResources.add( (ResourceLoaderAware)obj );
    }
    if (obj instanceof SolrInfoMBean){
      //TODO: Assert here?
      infoMBeans.add((SolrInfoMBean) obj);
    }
  }
  return obj;
}
 

import org.apache.solr.util.plugin.SolrCoreAware; //导入依赖的package包/类
@Override
public void inform(SolrCore core) 
{
  String path = null;
  for( Map.Entry<String, SolrRequestHandler> entry : core.getRequestHandlers().entrySet() ) {
    if( entry.getValue() == this ) {
      path = entry.getKey();
      break;
    }
  }
  if( path == null ) {
    throw new SolrException( SolrException.ErrorCode.SERVER_ERROR, 
        "The AdminHandler is not registered with the current core." );
  }
  if( !path.startsWith( "/" ) ) {
    throw new SolrException( SolrException.ErrorCode.SERVER_ERROR, 
      "The AdminHandler needs to be registered to a path.  Typically this is '/admin'" );
  }
  // Remove the parent handler 
  core.registerRequestHandler(path, null);
  if( !path.endsWith( "/" ) ) {
    path += "/";
  }
  
  StandardHandler[] list = new StandardHandler[] {
    new StandardHandler( "luke", new LukeRequestHandler() ),
    new StandardHandler( "system", new SystemInfoHandler() ),
    new StandardHandler( "mbeans", new SolrInfoMBeanHandler() ),
    new StandardHandler( "plugins", new PluginInfoHandler() ),
    new StandardHandler( "threads", new ThreadDumpHandler() ),
    new StandardHandler( "properties", new PropertiesRequestHandler() ),
    new StandardHandler( "logging", new LoggingHandler() ),
    new StandardHandler( "file", new ShowFileRequestHandler() )
  };
  
  for( StandardHandler handler : list ) {
    if( core.getRequestHandler( path+handler.name ) == null ) {
      handler.handler.init( initArgs );
      core.registerRequestHandler( path+handler.name, handler.handler );
      if( handler.handler instanceof SolrCoreAware ) {
        ((SolrCoreAware)handler.handler).inform(core);
      }
    }
  }
}
 

import org.apache.solr.util.plugin.SolrCoreAware; //导入依赖的package包/类
/**
 * NOTE: ideally we'd just override the list of admin handlers, but
 * since AdminHandlers in solr doesn't allow it, let's just copy the
 * entire function.  This is deprecated in Solr 5.0, so we should do something
 * different with Solr 5.0 anyway.
 */
@Override
public void inform(SolrCore core) 
{
  String path = null;
  for( Map.Entry<String, SolrRequestHandler> entry : core.getRequestHandlers().entrySet() ) {
    if( entry.getValue() == this ) {
      path = entry.getKey();
      break;
    }
  }
  if( path == null ) {
    throw new SolrException( SolrException.ErrorCode.SERVER_ERROR, 
        "The AdminHandler is not registered with the current core." );
  }
  if( !path.startsWith( "/" ) ) {
    throw new SolrException( SolrException.ErrorCode.SERVER_ERROR, 
      "The AdminHandler needs to be registered to a path.  Typically this is '/admin'" );
  }
  // Remove the parent handler 
  core.registerRequestHandler(path, null);
  if( !path.endsWith( "/" ) ) {
    path += "/";
  }
  
  StandardHandler[] list = new StandardHandler[] {
     new StandardHandler( "luke", new SecureLukeRequestHandler() ),
     new StandardHandler( "system", new SecureSystemInfoHandler() ),
     new StandardHandler( "mbeans", new SecureSolrInfoMBeanHandler() ),
     new StandardHandler( "plugins", new SecurePluginInfoHandler() ),
     new StandardHandler( "threads", new SecureThreadDumpHandler() ),
     new StandardHandler( "properties", new SecurePropertiesRequestHandler() ),
     new StandardHandler( "logging", new SecureLoggingHandler() ),
     new StandardHandler( "file", new SecureShowFileRequestHandler() )
  };
  
  for( StandardHandler handler : list ) {
    if( core.getRequestHandler( path+handler.name ) == null ) {
      handler.handler.init( initArgs );
      core.registerRequestHandler( path+handler.name, handler.handler );
      if( handler.handler instanceof SolrCoreAware ) {
        ((SolrCoreAware)handler.handler).inform(core);
      }
    }
  }
}