| /* |
| * Copyright 2015-present Open Networking Foundation |
| * |
| * Licensed 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.onosproject.fnl.base; |
| |
| /** |
| * Represents an additional value that a caller may pass to a method. |
| * Be filled in by the called method. |
| * |
| * Used as an extra return value. |
| * |
| * @param <M> the class of expected return value |
| */ |
| public final class TsReturn<M> { |
| private M ret; |
| |
| /** |
| * Sets the value of this instance. |
| * |
| * @param value the value to set |
| */ |
| public void setValue(M value) { |
| ret = value; |
| } |
| |
| /** |
| * Returns the value of this instance. |
| * |
| * @return the value |
| */ |
| public M getValue() { |
| return ret; |
| } |
| |
| /** |
| * Returns true if the value has been set. |
| * Generally, if setValue() has not been invoked, |
| * the value will not be present (i.e. null). |
| * |
| * @return true, if ret is present; |
| * false, otherwise |
| */ |
| public boolean isPresent() { |
| return ret != null; |
| } |
| } |