1 files changed, 150 insertions, 0 deletions
diff --git a/model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxValidationResult.java b/model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxValidationResult.java
new file mode 100644
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+++ b/model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxValidationResult.java
@@ -0,0 +1,150 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2016-2018 Ericsson. 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=========================================================
+ */
+
+package org.onap.policy.apex.model.basicmodel.concepts;
+
+import java.util.LinkedList;
+import java.util.List;
+
+/**
+ * This class records the result of a validation and holds all validatino observation messages.
+ *
+ * @author Liam Fallon (liam.fallon@ericsson.com)
+ */
+public class AxValidationResult {
+    /**
+     * The ValidationResult enumeration describes the severity of a validation result.
+     */
+    public enum ValidationResult {
+        /** No problems or observations were detected during validation. */
+        VALID,
+        /**
+         * Observations were made on a concept (such as blank descriptions) of a nature that will not affect the use of
+         * the concept.
+         */
+        OBSERVATION,
+        /**
+         * Warnings were made on a concept (such as defined but unused concepts) of a nature that may affect the use of
+         * the concept.
+         */
+        WARNING,
+        /**
+         * Errors were detected on a concept (such as referenced but undefined concepts) of a nature that will affect
+         * the use of the concept.
+         */
+        INVALID
+    }
+
+    // The actual verification result
+    private ValidationResult validationResult = ValidationResult.VALID;
+
+    // Messages collected during the verification process
+    private final List<AxValidationMessage> messageList = new LinkedList<>();
+
+    /**
+     * Check if a validation reported a valid concept, returns true if the model is usable (that is, even if the model
+     * has warnings or observations).
+     *
+     * @return true, if the concept is reported as valid and can be used
+     */
+    public boolean isValid() {
+        return validationResult != ValidationResult.INVALID;
+    }
+
+    /**
+     * Check if a validation reported a concept with no errors or warnings, returns true if the model is OK to use.
+     *
+     * @return true, if the concept has no warnings or errors
+     */
+    public boolean isOk() {
+        return validationResult == ValidationResult.VALID || validationResult == ValidationResult.OBSERVATION;
+    }
+
+    /**
+     * Gets the validation result.
+     *
+     * @return the validation result on a concept
+     */
+    public ValidationResult getValidationResult() {
+        return validationResult;
+    }
+
+    /**
+     * Gets the list of validation results on the concept.
+     *
+     * @return the list of validaiton results
+     */
+    public List<AxValidationMessage> getMessageList() {
+        return messageList;
+    }
+
+    /**
+     * Adds a validation message to the validation result, used by validate() implementations on {@link AxConcept}
+     * subclasses to report validaiton observations.
+     *
+     * @param validationMessage the validation message
+     */
+    public void addValidationMessage(final AxValidationMessage validationMessage) {
+        messageList.add(validationMessage);
+
+        // Check if the incoming message has a more sever status than the
+        // current one on the overall validation result,
+        // if so, the overall result goes to that level
+        if (validationMessage.getValidationResult().ordinal() > validationResult.ordinal()) {
+            validationResult = validationMessage.getValidationResult();
+        }
+    }
+
+    /**
+     * {@inheritDoc}.
+     */
+    @Override
+    public String toString() {
+        final StringBuilder builder = new StringBuilder();
+
+        switch (validationResult) {
+            case VALID:
+
+                builder.append("***validation of model successful***");
+                return builder.toString();
+            case OBSERVATION:
+
+                builder.append("\n***observations noted during validation of model***\n");
+                break;
+            case WARNING:
+
+                builder.append("\n***warnings issued during validation of model***\n");
+                break;
+            case INVALID:
+                builder.append("\n***validation of model failed***\n");
+                break;
+            default:
+                break;
+        }
+
+        for (final AxValidationMessage message : messageList) {
+            builder.append(message);
+            builder.append("\n");
+        }
+
+        builder.append("********************************");
+        return builder.toString();
+    }
+}