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diff --git a/dcae-analytics/dcae-analytics-tca-core/src/main/java/org/onap/dcae/analytics/tca/core/util/function/calculation/TcaAaiEnrichmentFunction.java b/dcae-analytics/dcae-analytics-tca-core/src/main/java/org/onap/dcae/analytics/tca/core/util/function/calculation/TcaAaiEnrichmentFunction.java
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+++ b/dcae-analytics/dcae-analytics-tca-core/src/main/java/org/onap/dcae/analytics/tca/core/util/function/calculation/TcaAaiEnrichmentFunction.java
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+/*
+ * ================================================================================
+ * Copyright (c) 2018 AT&T Intellectual Property. 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.
+ * ============LICENSE_END=========================================================
+ *
+ */
+
+package org.onap.dcae.analytics.tca.core.util.function.calculation;
+
+import java.util.Optional;
+
+import org.onap.dcae.analytics.tca.core.service.TcaAaiEnrichmentContext;
+import org.onap.dcae.analytics.tca.core.service.TcaAaiEnrichmentService;
+import org.onap.dcae.analytics.tca.core.service.TcaExecutionContext;
+import org.onap.dcae.analytics.tca.model.facade.TcaAlert;
+import org.onap.dcae.analytics.tca.model.policy.ClosedLoopEventStatus;
+
+/**
+ * @author Rajiv Singla
+ */
+public class TcaAaiEnrichmentFunction implements TcaCalculationFunction {
+
+    @Override
+    public TcaExecutionContext calculate(final TcaExecutionContext tcaExecutionContext) {
+
+        final TcaAaiEnrichmentContext aaiEnrichmentContext = tcaExecutionContext.getTcaAaiEnrichmentContext();
+        final Optional<TcaAlert> tcaAlertOptional =
+                Optional.ofNullable(tcaExecutionContext.getTcaResultContext().getTcaAlert());
+
+        // Skip Aai Enrichment - if aai enrichment is not enabled or no alert is present
+        if (!aaiEnrichmentContext.isAaiEnrichmentEnabled() || !tcaAlertOptional.isPresent()) {
+            return tcaExecutionContext;
+        }
+
+        // Skip Aai Enrichment - if Alert Closed Loop Event status is not ONSET
+        final TcaAlert tcaAlert = tcaAlertOptional.get();
+        final ClosedLoopEventStatus closedLoopEventStatus =
+                ClosedLoopEventStatus.valueOf(tcaAlert.getClosedLoopEventStatus());
+        if (closedLoopEventStatus != ClosedLoopEventStatus.ONSET) {
+            return tcaExecutionContext;
+        }
+
+        // do Aai Enrichment
+        final TcaAaiEnrichmentService aaiEnrichmentService = aaiEnrichmentContext.getAaiEnrichmentService();
+        final TcaAlert enrichedTcaAlert = aaiEnrichmentService.doAaiEnrichment(tcaExecutionContext);
+        tcaExecutionContext.getTcaResultContext().setTcaAlert(enrichedTcaAlert);
+
+        return tcaExecutionContext;
+    }
+}