Add shared context example

- Add a new example which splits the DecisionMaker policy into two policies
- One which sets answers and one which makes the decision
- Both policies share the AnswerAlbum context
- Added documentation to support this

Issue-ID: POLICY-4765
Change-Id: I12bcef9f32b5efae2574cc5e6ebb988a17ac96a9
Signed-off-by: waynedunican <wayne.dunican@est.tech>

1 files changed, 37 insertions, 0 deletions

diff --git a/examples/examples-decisionmaker-sharedcontext/src/main/resources/logic/PessimisticAnswerTask.js b/examples/examples-decisionmaker-sharedcontext/src/main/resources/logic/PessimisticAnswerTask.js
new file mode 100644
index 000000000..19889f8d7
--- /dev/null
+++ b/examples/examples-decisionmaker-sharedcontext/src/main/resources/logic/PessimisticAnswerTask.js
@@ -0,0 +1,37 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2023 Nordix Foundation. All rights reserved.
+ * ================================================================================
+ * 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+executor.logger.info(executor.subject.id);
+executor.logger.info(executor.inFields);
+
+var size = executor.getContextAlbum("AnswerAlbum").size();
+
+var selection = Math.floor(Math.random() * size / 2);
+
+var selectionA = "a" + selection;
+
+executor.logger.info(size);
+executor.logger.info(selectionA);
+
+executor.outFields.put("decision", executor.getContextAlbum("AnswerAlbum").get(selectionA));
+
+executor.logger.info(executor.outFields);
+
+true;