| /** |
| * 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.fs.shell.find; |
| |
| public final class Result { |
| /** Result indicating {@link Expression} processing should continue. */ |
| public static final Result PASS = new Result(true, true); |
| /** Result indicating {@link Expression} processing should stop. */ |
| public static final Result FAIL = new Result(false, true); |
| /** |
| * Result indicating {@link Expression} processing should not descend any more |
| * directories. |
| */ |
| public static final Result STOP = new Result(true, false); |
| private boolean descend; |
| private boolean success; |
| |
| private Result(boolean success, boolean recurse) { |
| this.success = success; |
| this.descend = recurse; |
| } |
| |
| /** Should further directories be descended. */ |
| public boolean isDescend() { |
| return this.descend; |
| } |
| |
| /** Should processing continue. */ |
| public boolean isPass() { |
| return this.success; |
| } |
| |
| /** Returns the combination of this and another result. */ |
| public Result combine(Result other) { |
| return new Result(this.isPass() && other.isPass(), this.isDescend() |
| && other.isDescend()); |
| } |
| |
| /** Negate this result. */ |
| public Result negate() { |
| return new Result(!this.isPass(), this.isDescend()); |
| } |
| |
| @Override |
| public String toString() { |
| return "success=" + isPass() + "; recurse=" + isDescend(); |
| } |
| |
| @Override |
| public int hashCode() { |
| final int prime = 31; |
| int result = 1; |
| result = prime * result + (descend ? 1231 : 1237); |
| result = prime * result + (success ? 1231 : 1237); |
| return result; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) |
| return true; |
| if (obj == null) |
| return false; |
| if (getClass() != obj.getClass()) |
| return false; |
| Result other = (Result) obj; |
| if (descend != other.descend) |
| return false; |
| if (success != other.success) |
| return false; |
| return true; |
| } |
| } |