2 * ============LICENSE_START====================================================
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4 * ===========================================================================
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5 * Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
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6 * ===========================================================================
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7 * Licensed under the Apache License, Version 2.0 (the "License");
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8 * you may not use this file except in compliance with the License.
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9 * You may obtain a copy of the License at
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11 * http://www.apache.org/licenses/LICENSE-2.0
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13 * Unless required by applicable law or agreed to in writing, software
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14 * distributed under the License is distributed on an "AS IS" BASIS,
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15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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16 * See the License for the specific language governing permissions and
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17 * limitations under the License.
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18 * ============LICENSE_END====================================================
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25 package org.onap.aaf.misc.env.impl;
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27 import org.onap.aaf.misc.env.APIException;
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28 import org.onap.aaf.misc.env.Env;
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29 import org.onap.aaf.misc.env.LifeCycle;
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34 * <h1>NullLifeCycle</h1>
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36 * This is a convenience class for those Objects which should
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37 * implement LifeCycle, but don't have anything to do in any of the
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38 * LifeCycle methods defined. Extending
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39 * NullLifeCycle reduces the required methods for the class by 5.
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40 * Any one or two of them can be overloaded.<p>
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42 * If more are overloaded, it is
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43 * recommended just to implement LifeCycle.
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46 * This only works, though, if the Object doesn't need to extend something
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47 * else, due to Java's Single Extension policy. In other cases, just
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48 * implement LifeCycle, and leave them empty.
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53 public class NullLifeCycle implements LifeCycle {
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54 public void servicePrestart(Env env) throws APIException {}
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55 public void threadPrestart(Env env) throws APIException {}
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56 public void refresh(Env env) throws APIException {}
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57 public void threadDestroy(Env env) throws APIException {}
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58 public void serviceDestroy(Env env) throws APIException {}
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