1 /*
2 * Copyright 2006-2007 the original author or authors.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.springframework.batch.core.step.skip;
17
18 /**
19 * Policy for determining whether or not some processing should be skipped.
20 *
21 * @author Lucas Ward
22 * @author Dave Syer
23 */
24 public interface SkipPolicy {
25
26 /**
27 * Returns true or false, indicating whether or not processing should
28 * continue with the given throwable. Clients may use
29 * <code>skipCount<0</code> to probe for exception types that are skippable,
30 * so implementations should be able to handle gracefully the case where
31 * <code>skipCount<0</code>. Implementations should avoid throwing any
32 * undeclared exceptions.
33 *
34 * @param t exception encountered while reading
35 * @param skipCount currently running count of skips
36 * @return true if processing should continue, false otherwise.
37 * @throws SkipLimitExceededException if a limit is breached
38 * @throws IllegalArgumentException if the exception is null
39 */
40 boolean shouldSkip(Throwable t, int skipCount) throws SkipLimitExceededException;
41
42 }