sunjincheng121 commented on a change in pull request #7110: [FLINK-8159] [cep] Pattern(Flat)SelectFunctions should support RichFunction interface URL: https://github.com/apache/flink/pull/7110#discussion_r235608590
########## File path: flink-libraries/flink-cep/src/main/java/org/apache/flink/cep/pattern/conditions/RichAndCondition.java ########## @@ -0,0 +1,55 @@ +/* + * 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.flink.cep.pattern.conditions; + +/** + * A {@link RichIterativeCondition condition} which combines two conditions with a logical + * {@code AND} and returns {@code true} if both are {@code true}. + * + * @param <T> Type of the element to filter + */ +public class RichAndCondition<T> extends RichCompositeIterativeCondition<T> { + + private static final long serialVersionUID = 1L; + + public RichAndCondition(final IterativeCondition<T> left, final IterativeCondition<T> right) { + super(left, right); + } + + @Override + public boolean filter(T value, Context<T> ctx) throws Exception { + IterativeCondition<T> left = getLeft(); + IterativeCondition<T> right = getRight(); + return (left == null || left.filter(value, ctx)) && (right == null || right.filter(value, ctx)); Review comment: @dawidwys Thank you for the reminder！Can you explain more about `condition() == null`? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
