2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2016-2018 Ericsson. All rights reserved.
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 * SPDX-License-Identifier: Apache-2.0
18 * ============LICENSE_END=========================================================
21 package org.onap.policy.apex.context.impl.persistence.ephemeral;
24 import java.util.TreeSet;
25 import org.onap.policy.apex.context.ContextException;
26 import org.onap.policy.apex.context.Persistor;
27 import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
28 import org.onap.policy.apex.model.basicmodel.concepts.AxReferenceKey;
29 import org.onap.policy.apex.model.contextmodel.concepts.AxContextSchema;
32 * This class acts as an "in memory" persistor for a single JVM. It just initiates stubs the Persistor interface and
33 * does not persist anything.
35 * @author Liam Fallon (liam.fallon@ericsson.com)
37 public class EphemeralPersistor implements Persistor {
39 // The key of this persistor
40 private AxArtifactKey key;
46 public void init(final AxArtifactKey persistorKey) throws ContextException {
47 this.key = persistorKey;
54 public AxArtifactKey getKey() {
62 public AxContextSchema readContextItem(final AxReferenceKey itemKey, final Class<?> contextItemClass) {
63 // Can't read from this persistor as nothing is persisted
71 public Set<AxContextSchema> readContextItems(final AxArtifactKey ownerKey, final Class<?> contextItemClass)
72 throws ContextException {
73 // No reading from persistence on the Ephemeral persistor, return an empty set
74 return new TreeSet<>();
81 public Object writeContextItem(final Object contextItem) {
82 // No writing to persistence on the Ephemeral persistor