kafka RecordIsTombstone 源码
kafka RecordIsTombstone 代码
文件路径：/connect/transforms/src/main/java/org/apache/kafka/connect/transforms/predicates/RecordIsTombstone.java
/*
* 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.kafka.connect.transforms.predicates;
import java.util.Map;
import org.apache.kafka.common.config.ConfigDef;
import org.apache.kafka.connect.connector.ConnectRecord;
/**
* A predicate which is true for records which are tombstones (i.e. have null value).
* @param <R> The type of connect record.
*/
public class RecordIsTombstone<R extends ConnectRecord<R>> implements Predicate<R> {
public static final String OVERVIEW_DOC = "A predicate which is true for records which are tombstones (i.e. have null value).";
public static final ConfigDef CONFIG_DEF = new ConfigDef();
@Override
public ConfigDef config() {
return CONFIG_DEF;
}
@Override
public boolean test(R record) {
return record.value() == null;
}
@Override
public void close() {
}
@Override
public void configure(Map<String, ?> configs) {
}
@Override
public String toString() {
return "RecordIsTombstone{}";
}
}
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