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>

16 files changed, 1044 insertions, 0 deletions

diff --git a/examples/examples-decisionmaker-sharedcontext/pom.xml b/examples/examples-decisionmaker-sharedcontext/pom.xml
new file mode 100644
index 000000000..acbfeff3d
--- /dev/null
+++ b/examples/examples-decisionmaker-sharedcontext/pom.xml
@@ -0,0 +1,121 @@
+<!--
+  ============LICENSE_START=======================================================
+   Copyright (C) 2023 Nordix 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.
+
+  SPDX-License-Identifier: Apache-2.0
+  ============LICENSE_END=========================================================
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.onap.policy.apex-pdp.examples</groupId>
+        <artifactId>examples</artifactId>
+        <version>3.0.1-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>examples-decisionmaker-sharedcontext</artifactId>
+    <name>${project.artifactId}</name>
+    <description>Specific code for the APEX Decision Maker Example</description>
+
+    <properties>
+        <policymodel.decisionmaker.name>DecisionMakerPolicyModel</policymodel.decisionmaker.name>
+        <policymodel.decisionmakertwo.name>DecisionMakerPolicyModel_Decision</policymodel.decisionmakertwo.name>
+        <apex-domains-decisionmaker-dir>${project.basedir}/src</apex-domains-decisionmaker-dir>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.onap.policy.apex-pdp.auth</groupId>
+            <artifactId>cli-editor</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.onap.policy.apex-pdp.services</groupId>
+            <artifactId>services-engine</artifactId>
+            <version>${project.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.onap.policy.apex-pdp.plugins.plugins-context.plugins-context-schema</groupId>
+            <artifactId>plugins-context-schema-avro</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.onap.policy.apex-pdp.plugins.plugins-executor</groupId>
+            <artifactId>plugins-executor-javascript</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.onap.policy.apex-pdp.plugins.plugins-event.plugins-event-carrier</groupId>
+            <artifactId>plugins-event-carrier-restserver</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <configuration>
+                    <argLine>-Xss1m</argLine>
+                </configuration>
+            </plugin>
+            <!-- Generate the APEX Policy JSON from the APEX CLI command -->
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>exec-maven-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <id>generate-decisionmaker-sharedcontext-policy</id>
+                        <phase>compile</phase>
+                        <goals>
+                            <goal>java</goal>
+                        </goals>
+                        <configuration>
+                            <mainClass>org.onap.policy.apex.auth.clieditor.tosca.ApexCliToscaEditorMain</mainClass>
+                            <classpathScope>compile</classpathScope>
+                            <arguments>
+                                <argument>--command-file=${project.basedir}/src/main/resources/policy/${policymodel.decisionmaker.name}.apex</argument>
+                                <argument>--output-tosca-file=${project.build.directory}/classes/${policymodel.decisionmaker.name}.json</argument>
+                                <argument>--log-file=${project.build.directory}/${policymodel.decisionmaker.name}_policygeneration.log</argument>
+                                <argument>--apex-config-file=${project.basedir}/src/main/resources/examples/config/DecisionMaker/ApexConfigRESTServerNoModel.json</argument>
+                                <argument>--tosca-template-file=${project.basedir}/src/main/resources/tosca/ToscaTemplate.json</argument>
+                            </arguments>
+                        </configuration>
+                    </execution>
+                    <execution>
+                        <id>generate-decisionmakertwo-sharedcontext-policy</id>
+                        <phase>compile</phase>
+                        <goals>
+                            <goal>java</goal>
+                        </goals>
+                        <configuration>
+                            <mainClass>org.onap.policy.apex.auth.clieditor.tosca.ApexCliToscaEditorMain</mainClass>
+                            <classpathScope>compile</classpathScope>
+                            <arguments>
+                                <argument>--command-file=${project.basedir}/src/main/resources/policy/${policymodel.decisionmakertwo.name}.apex</argument>
+                                <argument>--output-tosca-file=${project.build.directory}/classes/${policymodel.decisionmakertwo.name}.json</argument>
+                                <argument>--log-file=${project.build.directory}/${policymodel.decisionmakertwo.name}_policygeneration.log</argument>
+                                <argument>--apex-config-file=${project.basedir}/src/main/resources/examples/config/DecisionMaker/ApexConfigRESTServerNoModel_Decision.json</argument>
+                                <argument>--tosca-template-file=${project.basedir}/src/main/resources/tosca/ToscaTemplateTwo.json</argument>
+                            </arguments>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+</project>
diff --git a/examples/examples-decisionmaker-sharedcontext/src/main/resources/examples/config/DecisionMaker/ApexConfigRESTServerNoModel.json b/examples/examples-decisionmaker-sharedcontext/src/main/resources/examples/config/DecisionMaker/ApexConfigRESTServerNoModel.json
new file mode 100644
index 000000000..8d72f66ee
--- /dev/null
+++ b/examples/examples-decisionmaker-sharedcontext/src/main/resources/examples/config/DecisionMaker/ApexConfigRESTServerNoModel.json
@@ -0,0 +1,60 @@
+{
+  "engineServiceParameters": {
+    "name": "MyApexEngine",
+    "version": "0.0.1",
+    "id": 45,
+    "instanceCount": 4,
+    "deploymentPort": 12345,
+    "engineParameters": {
+      "executorParameters": {
+        "JAVASCRIPT": {
+          "parameterClassName": "org.onap.policy.apex.plugins.executor.javascript.JavascriptExecutorParameters"
+        }
+      }
+    }
+  },
+  "eventInputParameters": {
+    "RESTConsumer": {
+      "carrierTechnologyParameters": {
+        "carrierTechnology": "RESTSERVER",
+        "parameterClassName": "org.onap.policy.apex.plugins.event.carrier.restserver.RestServerCarrierTechnologyParameters",
+        "parameters": {
+          "standalone": true,
+          "host": "0.0.0.0",
+          "port": 23324
+        }
+      },
+      "eventProtocolParameters": {
+        "eventProtocol": "JSON"
+      },
+      "synchronousMode": true,
+      "synchronousPeer": "RESTProducer",
+      "synchronousTimeout": 500
+    }
+  },
+  "eventOutputParameters": {
+    "logProducer": {
+      "carrierTechnologyParameters": {
+        "carrierTechnology": "FILE",
+        "parameters": {
+          "fileName": "/tmp/EventsOut.json"
+        }
+      },
+      "eventProtocolParameters": {
+        "eventProtocol": "JSON"
+      }
+    },
+    "RESTProducer": {
+      "carrierTechnologyParameters":{
+        "carrierTechnology" : "RESTSERVER",
+        "parameterClassName" : "org.onap.policy.apex.plugins.event.carrier.restserver.RestServerCarrierTechnologyParameters"
+      },
+      "eventProtocolParameters":{
+        "eventProtocol" : "JSON"
+      },
+      "synchronousMode"    : true,
+      "synchronousPeer"    : "RESTConsumer",
+      "synchronousTimeout" : 500
+    }
+  }
+}
diff --git a/examples/examples-decisionmaker-sharedcontext/src/main/resources/examples/config/DecisionMaker/ApexConfigRESTServerNoModel_Decision.json b/examples/examples-decisionmaker-sharedcontext/src/main/resources/examples/config/DecisionMaker/ApexConfigRESTServerNoModel_Decision.json
new file mode 100644
index 000000000..5feee4788
--- /dev/null
+++ b/examples/examples-decisionmaker-sharedcontext/src/main/resources/examples/config/DecisionMaker/ApexConfigRESTServerNoModel_Decision.json
@@ -0,0 +1,60 @@
+{
+    "engineServiceParameters": {
+        "name": "MyApexEngine",
+        "version": "0.0.1",
+        "id": 45,
+        "instanceCount": 4,
+        "deploymentPort": 12345,
+        "engineParameters": {
+            "executorParameters": {
+                "JAVASCRIPT": {
+                    "parameterClassName": "org.onap.policy.apex.plugins.executor.javascript.JavascriptExecutorParameters"
+                }
+            }
+        }
+    },
+    "eventInputParameters": {
+        "RESTConsumerTwo": {
+            "carrierTechnologyParameters": {
+                "carrierTechnology": "RESTSERVER",
+                "parameterClassName": "org.onap.policy.apex.plugins.event.carrier.restserver.RestServerCarrierTechnologyParameters",
+                "parameters": {
+                    "standalone": true,
+                    "host": "0.0.0.0",
+                    "port": 23325
+                }
+            },
+            "eventProtocolParameters": {
+                "eventProtocol": "JSON"
+            },
+            "synchronousMode": true,
+            "synchronousPeer": "RESTProducerTwo",
+            "synchronousTimeout": 500
+        }
+    },
+    "eventOutputParameters": {
+        "logProducerTwo": {
+            "carrierTechnologyParameters": {
+                "carrierTechnology": "FILE",
+                "parameters": {
+                    "fileName": "/tmp/EventsOutTwo.json"
+                }
+            },
+            "eventProtocolParameters": {
+                "eventProtocol": "JSON"
+            }
+        },
+        "RESTProducerTwo": {
+            "carrierTechnologyParameters":{
+                "carrierTechnology" : "RESTSERVER",
+                "parameterClassName" : "org.onap.policy.apex.plugins.event.carrier.restserver.RestServerCarrierTechnologyParameters"
+            },
+            "eventProtocolParameters":{
+                "eventProtocol" : "JSON"
+            },
+            "synchronousMode"    : true,
+            "synchronousPeer"    : "RESTConsumerTwo",
+            "synchronousTimeout" : 500
+        }
+    }
+}
diff --git a/examples/examples-decisionmaker-sharedcontext/src/main/resources/examples/html/DecisionMaker/MakeDecision_Server.html b/examples/examples-decisionmaker-sharedcontext/src/main/resources/examples/html/DecisionMaker/MakeDecision_Server.html
new file mode 100644
index 000000000..8809f05ad
--- /dev/null
+++ b/examples/examples-decisionmaker-sharedcontext/src/main/resources/examples/html/DecisionMaker/MakeDecision_Server.html
@@ -0,0 +1,153 @@
+<!--
+  ============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=========================================================
+-->
+
+<!-- http://localhost:23324/apex/eventInput/EventIn -->
+
+<html>
+<head>
+<script src="http://code.jquery.com/jquery-latest.js"></script>
+<script>
+    $(document).ready(function() {
+        $("#answerspost").click(function(e) {
+            var elements = document.getElementById("answerform").elements;
+
+            var formValues = new Object;
+            formValues["name"] = "AnswerEvent";
+            for (var i = 0, element; element = elements[i++];) {
+                if (element.type === "text" && element.value != "") {
+                    formValues[element.name] = element.value;
+                }
+            }
+            console.log(formValues);
+            var stringifiedForm = JSON.stringify(formValues);
+            console.log(stringifiedForm);
+            $.ajax({
+                type : "POST",
+                url : "http://localhost:23324/apex/RESTConsumer/EventIn",
+                data : stringifiedForm,
+                crossDomain : true,
+                contentType : "application/json; charset=utf-8",
+                success : function(data) {
+                    alert("Answers Set Successfully !!!");
+                },
+                failure : function(errMsg) {
+                    alert(errMsg);
+                }
+            });
+            e.preventDefault(); //STOP default action
+
+        });
+    });
+</script>
+<script>
+    $(document).ready(function() {
+        $("#modepost").click(function(e) {
+            var elements = document.getElementById("modeform").elements;
+
+            var formValues = new Object;
+            formValues["name"] = "MakeDecisionEvent";
+            for (var i = 0, element; element = elements[i++];) {
+                if (element.type === "radio" && element.checked) {
+                    formValues[element.name] = element.value;
+                }
+            }
+            console.log(formValues);
+            var stringifiedForm = JSON.stringify(formValues);
+            console.log(stringifiedForm);
+            $.ajax({
+                type : "POST",
+                url : "http://localhost:23324/apex/RESTConsumer/EventIn",
+                data : stringifiedForm,
+                crossDomain : true,
+                contentType : "application/json; charset=utf-8",
+                success : function(data) {
+                    alert("Decision Taken: " + data.decision);
+                },
+                failure : function(errMsg) {
+                    alert(errMsg);
+                }
+            });
+            e.preventDefault(); //STOP default action
+
+        });
+    });
+</script>
+</head>
+<body>
+    <h3>Decision Maker Answers</h3>
+    <form name="answerform" id="answerform" method="POST">
+        <table>
+            <tr>
+                <td>First Answer:</td>
+                <td><input type="text" name="a0" value="Never Ever" /></td>
+            </tr>
+            <tr>
+                <td>Second Answer:</td>
+                <td><input type="text" name="a1" value="No" /></td>
+            </tr>
+            <tr>
+                <td>Third Answer:</td>
+                <td><input type="text" name="a2" value="Maybe not" /></td>
+            </tr>
+            <tr>
+                <td>Fourth Answer</td>
+                <td><input type="text" name="a3" value="Wait" /></td>
+            </tr>
+            <tr>
+                <td>Fifth Answer:</td>
+                <td><input type="text" name="a4" value="Maybe" /></td>
+            </tr>
+            <tr>
+                <td>Sixth Answer:</td>
+                <td><input type="text" name="a5" value="Yes" /></td>
+            </tr>
+            <tr>
+                <td>Seventh Answer:</td>
+                <td><input type="text" name="a6" value="Absolutely" /></td>
+            </tr>
+            <tr>
+                <td />
+                <td><input type="button" class="btn btn-info" id="answerspost"
+                    value="Set Answers"></td>
+            </tr>
+        </table>
+    </form>
+    <h3>Decision Maker Mode</h3>
+    <form name="modeform" id="modeform" method="POST">
+        <table>
+            <tr>
+                <td><input name="mode" type="radio" value="random"
+                    checked="checked">random</td>
+                <td><input name="mode" type="radio" value="pessimistic">pessimistic</td>
+                <td><input name="mode" type="radio" value="optimistic">
+                    optimistic</td>
+                <td><input name="mode" type="radio" value="dithering">dithering</td>
+            </tr>
+            <tr>
+                <td />
+                <td />
+                <td />
+                <td><input type="button" class="btn btn-info" id="modepost"
+                    value="Make Decision"></td>
+            </tr>
+        </table>
+    </form>
+</body>
+</html>
diff --git a/examples/examples-decisionmaker-sharedcontext/src/main/resources/examples/html/DecisionMaker/MakeDecision_Server_Decsion.html b/examples/examples-decisionmaker-sharedcontext/src/main/resources/examples/html/DecisionMaker/MakeDecision_Server_Decsion.html
new file mode 100644
index 000000000..cf79ed688
--- /dev/null
+++ b/examples/examples-decisionmaker-sharedcontext/src/main/resources/examples/html/DecisionMaker/MakeDecision_Server_Decsion.html
@@ -0,0 +1,153 @@
+<!--
+  ============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=========================================================
+-->
+
+<!-- http://localhost:23325/apex/eventInput/EventIn -->
+
+<html>
+<head>
+<script src="http://code.jquery.com/jquery-latest.js"></script>
+<script>
+    $(document).ready(function() {
+        $("#answerspost").click(function(e) {
+            var elements = document.getElementById("answerform").elements;
+
+            var formValues = new Object;
+            formValues["name"] = "AnswerEvent";
+            for (var i = 0, element; element = elements[i++];) {
+                if (element.type === "text" && element.value != "") {
+                    formValues[element.name] = element.value;
+                }
+            }
+            console.log(formValues);
+            var stringifiedForm = JSON.stringify(formValues);
+            console.log(stringifiedForm);
+            $.ajax({
+                type : "POST",
+                url : "http://localhost:23325/apex/RESTConsumerTwo/EventIn",
+                data : stringifiedForm,
+                crossDomain : true,
+                contentType : "application/json; charset=utf-8",
+                success : function(data) {
+                    alert("Answers Set Successfully !!!");
+                },
+                failure : function(errMsg) {
+                    alert(errMsg);
+                }
+            });
+            e.preventDefault(); //STOP default action
+
+        });
+    });
+</script>
+<script>
+    $(document).ready(function() {
+        $("#modepost").click(function(e) {
+            var elements = document.getElementById("modeform").elements;
+
+            var formValues = new Object;
+            formValues["name"] = "MakeDecisionEvent";
+            for (var i = 0, element; element = elements[i++];) {
+                if (element.type === "radio" && element.checked) {
+                    formValues[element.name] = element.value;
+                }
+            }
+            console.log(formValues);
+            var stringifiedForm = JSON.stringify(formValues);
+            console.log(stringifiedForm);
+            $.ajax({
+                type : "POST",
+                url : "http://localhost:23325/apex/RESTConsumerTwo/EventIn",
+                data : stringifiedForm,
+                crossDomain : true,
+                contentType : "application/json; charset=utf-8",
+                success : function(data) {
+                    alert("Decision Taken: " + data.decision);
+                },
+                failure : function(errMsg) {
+                    alert(errMsg);
+                }
+            });
+            e.preventDefault(); //STOP default action
+
+        });
+    });
+</script>
+</head>
+<body>
+    <h3>Decision Maker Answers</h3>
+    <form name="answerform" id="answerform" method="POST">
+        <table>
+            <tr>
+                <td>First Answer:</td>
+                <td><input type="text" name="a0" value="Never Ever" /></td>
+            </tr>
+            <tr>
+                <td>Second Answer:</td>
+                <td><input type="text" name="a1" value="No" /></td>
+            </tr>
+            <tr>
+                <td>Third Answer:</td>
+                <td><input type="text" name="a2" value="Maybe not" /></td>
+            </tr>
+            <tr>
+                <td>Fourth Answer</td>
+                <td><input type="text" name="a3" value="Wait" /></td>
+            </tr>
+            <tr>
+                <td>Fifth Answer:</td>
+                <td><input type="text" name="a4" value="Maybe" /></td>
+            </tr>
+            <tr>
+                <td>Sixth Answer:</td>
+                <td><input type="text" name="a5" value="Yes" /></td>
+            </tr>
+            <tr>
+                <td>Seventh Answer:</td>
+                <td><input type="text" name="a6" value="Absolutely" /></td>
+            </tr>
+            <tr>
+                <td />
+                <td><input type="button" class="btn btn-info" id="answerspost"
+                    value="Set Answers"></td>
+            </tr>
+        </table>
+    </form>
+    <h3>Decision Maker Mode</h3>
+    <form name="modeform" id="modeform" method="POST">
+        <table>
+            <tr>
+                <td><input name="mode" type="radio" value="random"
+                    checked="checked">random</td>
+                <td><input name="mode" type="radio" value="pessimistic">pessimistic</td>
+                <td><input name="mode" type="radio" value="optimistic">
+                    optimistic</td>
+                <td><input name="mode" type="radio" value="dithering">dithering</td>
+            </tr>
+            <tr>
+                <td />
+                <td />
+                <td />
+                <td><input type="button" class="btn btn-info" id="modepost"
+                    value="Make Decision"></td>
+            </tr>
+        </table>
+    </form>
+</body>
+</html>
diff --git a/examples/examples-decisionmaker-sharedcontext/src/main/resources/logic/AnswerInitTask.js b/examples/examples-decisionmaker-sharedcontext/src/main/resources/logic/AnswerInitTask.js
new file mode 100644
index 000000000..17861b8fe
--- /dev/null
+++ b/examples/examples-decisionmaker-sharedcontext/src/main/resources/logic/AnswerInitTask.js
@@ -0,0 +1,47 @@
+/*
+ * ============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 answerAlbum = executor.getContextAlbum("AnswerAlbum");
+
+answerAlbum.put("a0", executor.inFields.get("a0"));
+answerAlbum.put("a1", executor.inFields.get("a1"));
+answerAlbum.put("a2", executor.inFields.get("a2"));
+answerAlbum.put("a3", executor.inFields.get("a3"));
+answerAlbum.put("a4", executor.inFields.get("a4"));
+answerAlbum.put("a5", executor.inFields.get("a5"));
+answerAlbum.put("a6", executor.inFields.get("a6"));
+
+var lastAnswerAlbum = executor.getContextAlbum("LastAnswerAlbum");
+lastAnswerAlbum.put("lastAnswer", answerAlbum.size() - 1);
+
+executor.outFields.put("a0", answerAlbum.get("a0"));
+executor.outFields.put("a1", answerAlbum.get("a1"));
+executor.outFields.put("a2", answerAlbum.get("a2"));
+executor.outFields.put("a3", answerAlbum.get("a3"));
+executor.outFields.put("a4", answerAlbum.get("a4"));
+executor.outFields.put("a5", answerAlbum.get("a5"));
+executor.outFields.put("a6", answerAlbum.get("a6"));
+
+executor.logger.info(executor.outFields);
+
+true;
diff --git a/examples/examples-decisionmaker-sharedcontext/src/main/resources/logic/DitheringAnswerTask.js b/examples/examples-decisionmaker-sharedcontext/src/main/resources/logic/DitheringAnswerTask.js
new file mode 100644
index 000000000..cecbd0dd1
--- /dev/null
+++ b/examples/examples-decisionmaker-sharedcontext/src/main/resources/logic/DitheringAnswerTask.js
@@ -0,0 +1,38 @@
+/*
+ * ============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 = 2 + Math.floor(Math.random() * 3);
+
+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;
+
diff --git a/examples/examples-decisionmaker-sharedcontext/src/main/resources/logic/MakeDecisionStateTSL.js b/examples/examples-decisionmaker-sharedcontext/src/main/resources/logic/MakeDecisionStateTSL.js
new file mode 100644
index 000000000..d1bdfd644
--- /dev/null
+++ b/examples/examples-decisionmaker-sharedcontext/src/main/resources/logic/MakeDecisionStateTSL.js
@@ -0,0 +1,42 @@
+/*
+ * ============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);
+
+if (executor.inFields.get("mode").equals("random")) {
+    executor.subject.getTaskKey("RandomAnswerTask").copyTo(executor.selectedTask);
+}
+else if (executor.inFields.get("mode").equals("pessimistic")) {
+    executor.subject.getTaskKey("PessimisticAnswerTask").copyTo(executor.selectedTask);
+}
+else if (executor.inFields.get("mode").equals("optimistic")) {
+    executor.subject.getTaskKey("OptimisticAnswerTask").copyTo(executor.selectedTask);
+}
+else if (executor.inFields.get("mode").equals("dithering")) {
+    executor.subject.getTaskKey("DitheringAnswerTask").copyTo(executor.selectedTask);
+}
+else if (executor.inFields.get("mode").equals("roundrobin")) {
+    executor.subject.getTaskKey("RoundRobinAnswerTask").copyTo(executor.selectedTask);
+}
+
+executor.logger.info("Answer Selected Task:" + executor.selectedTask);
+
+true;
diff --git a/examples/examples-decisionmaker-sharedcontext/src/main/resources/logic/OptimisticAnswerTask.js b/examples/examples-decisionmaker-sharedcontext/src/main/resources/logic/OptimisticAnswerTask.js
new file mode 100644
index 000000000..cd0b18bc8
--- /dev/null
+++ b/examples/examples-decisionmaker-sharedcontext/src/main/resources/logic/OptimisticAnswerTask.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 = size - Math.floor(Math.random() * size / 2) - 1;
+
+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;
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;
diff --git a/examples/examples-decisionmaker-sharedcontext/src/main/resources/logic/RandomAnswerTask.js b/examples/examples-decisionmaker-sharedcontext/src/main/resources/logic/RandomAnswerTask.js
new file mode 100644
index 000000000..f5ed9000c
--- /dev/null
+++ b/examples/examples-decisionmaker-sharedcontext/src/main/resources/logic/RandomAnswerTask.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);
+
+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;
diff --git a/examples/examples-decisionmaker-sharedcontext/src/main/resources/logic/RoundRobinAnswerTask.js b/examples/examples-decisionmaker-sharedcontext/src/main/resources/logic/RoundRobinAnswerTask.js
new file mode 100644
index 000000000..ead3decc2
--- /dev/null
+++ b/examples/examples-decisionmaker-sharedcontext/src/main/resources/logic/RoundRobinAnswerTask.js
@@ -0,0 +1,45 @@
+/*
+ * ============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 lastAnswer = executor.getContextAlbum("LastAnswerAlbum").get("lastAnswer");
+
+executor.logger.info(size);
+executor.logger.info(lastAnswer);
+
+var answer = ++lastAnswer;
+if (answer >= size) {
+    answer = 0;
+}
+
+executor.getContextAlbum("LastAnswerAlbum").put("lastAnswer", answer)
+
+var selectionA = "a" + answer;
+
+executor.logger.info(selectionA);
+
+executor.outFields.put("decision", executor.getContextAlbum("AnswerAlbum").get(selectionA));
+
+executor.logger.info(executor.outFields);
+
+true;
diff --git a/examples/examples-decisionmaker-sharedcontext/src/main/resources/policy/DecisionMakerPolicyModel.apex b/examples/examples-decisionmaker-sharedcontext/src/main/resources/policy/DecisionMakerPolicyModel.apex
new file mode 100644
index 000000000..3313b637e
--- /dev/null
+++ b/examples/examples-decisionmaker-sharedcontext/src/main/resources/policy/DecisionMakerPolicyModel.apex
@@ -0,0 +1,69 @@
+#-------------------------------------------------------------------------------
+# ============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=========================================================
+#-------------------------------------------------------------------------------
+
+model create name=DecisionMakerPolicyModel
+
+schema create name=SimpleStringType  flavour=Java schema=java.lang.String
+schema create name=SimpleIntegerType flavour=Java schema=java.lang.Integer
+
+album create name=AnswerAlbum scope=policy writable=true schemaName=SimpleStringType
+album create name=LastAnswerAlbum scope=policy writable=true schemaName=SimpleIntegerType
+
+event create name=AnswerEvent nameSpace=org.onap.policy.apex.domains.decisionmaker source=DCAE target=apex
+event parameter create name=AnswerEvent parName=a0 schemaName=SimpleStringType
+event parameter create name=AnswerEvent parName=a1 schemaName=SimpleStringType
+event parameter create name=AnswerEvent parName=a2 schemaName=SimpleStringType
+event parameter create name=AnswerEvent parName=a3 schemaName=SimpleStringType
+event parameter create name=AnswerEvent parName=a4 schemaName=SimpleStringType
+event parameter create name=AnswerEvent parName=a5 schemaName=SimpleStringType
+event parameter create name=AnswerEvent parName=a6 schemaName=SimpleStringType
+
+task create name=AnswerInitTask
+task inputfield create name=AnswerInitTask fieldName=a0 schemaName=SimpleStringType
+task inputfield create name=AnswerInitTask fieldName=a1 schemaName=SimpleStringType
+task inputfield create name=AnswerInitTask fieldName=a2 schemaName=SimpleStringType
+task inputfield create name=AnswerInitTask fieldName=a3 schemaName=SimpleStringType
+task inputfield create name=AnswerInitTask fieldName=a4 schemaName=SimpleStringType
+task inputfield create name=AnswerInitTask fieldName=a5 schemaName=SimpleStringType
+task inputfield create name=AnswerInitTask fieldName=a6 schemaName=SimpleStringType
+
+task outputfield create name=AnswerInitTask fieldName=a0 schemaName=SimpleStringType
+task outputfield create name=AnswerInitTask fieldName=a1 schemaName=SimpleStringType
+task outputfield create name=AnswerInitTask fieldName=a2 schemaName=SimpleStringType
+task outputfield create name=AnswerInitTask fieldName=a3 schemaName=SimpleStringType
+task outputfield create name=AnswerInitTask fieldName=a4 schemaName=SimpleStringType
+task outputfield create name=AnswerInitTask fieldName=a5 schemaName=SimpleStringType
+task outputfield create name=AnswerInitTask fieldName=a6 schemaName=SimpleStringType
+
+task contextref create name=AnswerInitTask albumName=AnswerAlbum
+task contextref create name=AnswerInitTask albumName=LastAnswerAlbum
+
+task logic create name=AnswerInitTask logicFlavour=JAVASCRIPT logic=LS
+#MACROFILE:"src/main/resources/logic/AnswerInitTask.js"
+LE
+
+policy create name=AnswerInitPolicy template=freestyle firstState=AnswerInitState
+
+policy state create name=AnswerInitPolicy stateName=AnswerInitState triggerName=AnswerEvent defaultTaskName=AnswerInitTask
+policy state output create name=AnswerInitPolicy stateName=AnswerInitState outputName=AnswerInitOutput eventName=AnswerEvent
+policy state taskref create name=AnswerInitPolicy stateName=AnswerInitState taskName=AnswerInitTask outputType=DIRECT outputName=AnswerInitOutput
+
+validate
+
diff --git a/examples/examples-decisionmaker-sharedcontext/src/main/resources/policy/DecisionMakerPolicyModel_Decision.apex b/examples/examples-decisionmaker-sharedcontext/src/main/resources/policy/DecisionMakerPolicyModel_Decision.apex
new file mode 100644
index 000000000..465d1bd28
--- /dev/null
+++ b/examples/examples-decisionmaker-sharedcontext/src/main/resources/policy/DecisionMakerPolicyModel_Decision.apex
@@ -0,0 +1,111 @@
+#-------------------------------------------------------------------------------
+# ============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=========================================================
+#-------------------------------------------------------------------------------
+
+model create name=DecisionMakerPolicyModelTwo
+
+schema create name=SimpleStringType  flavour=Java schema=java.lang.String
+schema create name=SimpleIntegerType flavour=Java schema=java.lang.Integer
+
+album create name=AnswerAlbum scope=policy writable=true schemaName=SimpleStringType
+album create name=LastAnswerAlbum scope=policy writable=true schemaName=SimpleIntegerType
+
+event create name=MakeDecisionEvent nameSpace=org.onap.policy.apex.domains.decisionmaker source=DCAE target=apex
+event parameter create name=MakeDecisionEvent parName=mode schemaName=SimpleStringType
+
+event create name=DecisionEvent nameSpace=org.onap.policy.apex.domains.decisionmaker source=DCAE target=apex
+event parameter create name=DecisionEvent parName=decision schemaName=SimpleStringType
+
+task create name=RandomAnswerTask
+
+task inputfield create name=RandomAnswerTask fieldName=mode schemaName=SimpleStringType
+
+task outputfield create name=RandomAnswerTask fieldName=decision schemaName=SimpleStringType
+
+task contextref create name=RandomAnswerTask albumName=AnswerAlbum
+
+task logic create name=RandomAnswerTask logicFlavour=JAVASCRIPT logic=LS
+#MACROFILE:"src/main/resources/logic/RandomAnswerTask.js"
+LE
+
+task create name=PessimisticAnswerTask
+
+task inputfield create name=PessimisticAnswerTask fieldName=mode schemaName=SimpleStringType
+
+task outputfield create name=PessimisticAnswerTask fieldName=decision schemaName=SimpleStringType
+
+task contextref create name=PessimisticAnswerTask albumName=AnswerAlbum
+
+task logic create name=PessimisticAnswerTask logicFlavour=JAVASCRIPT logic=LS
+#MACROFILE:"src/main/resources/logic/PessimisticAnswerTask.js"
+LE
+
+task create name=OptimisticAnswerTask
+
+task inputfield create name=OptimisticAnswerTask fieldName=mode schemaName=SimpleStringType
+
+task outputfield create name=OptimisticAnswerTask fieldName=decision schemaName=SimpleStringType
+
+task contextref create name=OptimisticAnswerTask albumName=AnswerAlbum
+
+task logic create name=OptimisticAnswerTask logicFlavour=JAVASCRIPT logic=LS
+#MACROFILE:"src/main/resources/logic/OptimisticAnswerTask.js"
+LE
+
+task create name=DitheringAnswerTask
+
+task inputfield create name=DitheringAnswerTask fieldName=mode schemaName=SimpleStringType
+
+task outputfield create name=DitheringAnswerTask fieldName=decision schemaName=SimpleStringType
+
+task contextref create name=DitheringAnswerTask albumName=AnswerAlbum
+
+task logic create name=DitheringAnswerTask logicFlavour=JAVASCRIPT logic=LS
+#MACROFILE:"src/main/resources/logic/DitheringAnswerTask.js"
+LE
+
+task create name=RoundRobinAnswerTask
+
+task inputfield create name=RoundRobinAnswerTask fieldName=mode schemaName=SimpleStringType
+
+task outputfield create name=RoundRobinAnswerTask fieldName=decision schemaName=SimpleStringType
+
+task contextref create name=RoundRobinAnswerTask albumName=AnswerAlbum
+task contextref create name=RoundRobinAnswerTask albumName=LastAnswerAlbum
+
+task logic create name=RoundRobinAnswerTask logicFlavour=JAVASCRIPT logic=LS
+#MACROFILE:"src/main/resources/logic/RoundRobinAnswerTask.js"
+LE
+
+policy create name=DecisionMakerPolicy template=freestyle firstState=MakeDecisionState
+
+policy state create name=DecisionMakerPolicy stateName=MakeDecisionState triggerName=MakeDecisionEvent defaultTaskName=RandomAnswerTask
+policy state output create name=DecisionMakerPolicy stateName=MakeDecisionState outputName=DecisionFinalOutput eventName=DecisionEvent
+policy state taskref create name=DecisionMakerPolicy stateName=MakeDecisionState taskName=RandomAnswerTask outputType=DIRECT outputName=DecisionFinalOutput
+policy state taskref create name=DecisionMakerPolicy stateName=MakeDecisionState taskName=PessimisticAnswerTask outputType=DIRECT outputName=DecisionFinalOutput
+policy state taskref create name=DecisionMakerPolicy stateName=MakeDecisionState taskName=OptimisticAnswerTask outputType=DIRECT outputName=DecisionFinalOutput
+policy state taskref create name=DecisionMakerPolicy stateName=MakeDecisionState taskName=DitheringAnswerTask outputType=DIRECT outputName=DecisionFinalOutput
+policy state taskref create name=DecisionMakerPolicy stateName=MakeDecisionState taskName=RoundRobinAnswerTask outputType=DIRECT outputName=DecisionFinalOutput
+
+policy state selecttasklogic create name=DecisionMakerPolicy stateName=MakeDecisionState logicFlavour=JAVASCRIPT logic=LS
+#MACROFILE:"src/main/resources/logic/MakeDecisionStateTSL.js"
+LE
+
+validate
+
diff --git a/examples/examples-decisionmaker-sharedcontext/src/main/resources/tosca/ToscaTemplate.json b/examples/examples-decisionmaker-sharedcontext/src/main/resources/tosca/ToscaTemplate.json
new file mode 100644
index 000000000..c9e11d49b
--- /dev/null
+++ b/examples/examples-decisionmaker-sharedcontext/src/main/resources/tosca/ToscaTemplate.json
@@ -0,0 +1,17 @@
+{
+  "tosca_definitions_version": "tosca_simple_yaml_1_1_0",
+  "topology_template": {
+    "policies": [
+      {
+        "onap.policies.native.apex.DecisionMaker": {
+          "type": "onap.policies.native.Apex",
+          "type_version": "1.0.0",
+          "name": "onap.policies.native.apex.DecisionMaker",
+          "version": "1.0.0",
+          "properties": {
+          }
+        }
+      }
+    ]
+  }
+}
diff --git a/examples/examples-decisionmaker-sharedcontext/src/main/resources/tosca/ToscaTemplateTwo.json b/examples/examples-decisionmaker-sharedcontext/src/main/resources/tosca/ToscaTemplateTwo.json
new file mode 100644
index 000000000..0354d4eb7
--- /dev/null
+++ b/examples/examples-decisionmaker-sharedcontext/src/main/resources/tosca/ToscaTemplateTwo.json
@@ -0,0 +1,17 @@
+{
+  "tosca_definitions_version": "tosca_simple_yaml_1_1_0",
+  "topology_template": {
+    "policies": [
+      {
+        "onap.policies.native.apex.DecisionMakerTwo": {
+          "type": "onap.policies.native.Apex",
+          "type_version": "1.0.0",
+          "name": "onap.policies.native.apex.DecisionMakerTwo",
+          "version": "1.0.0",
+          "properties": {
+          }
+        }
+      }
+    ]
+  }
+}