001/* 002 * Copyright 2006-2019 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016package org.springframework.batch.core.step.skip; 017 018/** 019 * Policy for determining whether or not some processing should be skipped. 020 * 021 * @author Lucas Ward 022 * @author Dave Syer 023 * @author Mahmoud Ben Hassine 024 */ 025public interface SkipPolicy { 026 027 /** 028 * Returns true or false, indicating whether or not processing should 029 * continue with the given throwable. Clients may use 030 * {@code skipCount<0} to probe for exception types that are skippable, 031 * so implementations should be able to handle gracefully the case where 032 * {@code skipCount<0}. Implementations should avoid throwing any 033 * undeclared exceptions. 034 * 035 * @param t exception encountered while processing 036 * @param skipCount currently running count of skips 037 * @return true if processing should continue, false otherwise. 038 * @throws SkipLimitExceededException if a limit is breached 039 * @throws IllegalArgumentException if the exception is null 040 */ 041 boolean shouldSkip(Throwable t, int skipCount) throws SkipLimitExceededException; 042 043}