/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hive.metastore.messaging.event.filters;
import org.apache.hadoop.hive.metastore.IMetaStoreClient.NotificationFilter;
import org.apache.hadoop.hive.metastore.api.NotificationEvent;
public abstract class BasicFilter implements NotificationFilter {
@Override
public boolean accept(final NotificationEvent event) {
if (event == null) {
return false; // get rid of trivial case first, so that we can safely assume non-null
}
return shouldAccept(event);
}
abstract boolean shouldAccept(final NotificationEvent event);
}