1 files changed, 93 insertions, 0 deletions
diff --git a/models/src/main/java/org/onap/policy/clamp/models/acm/persistence/provider/ProviderUtils.java b/models/src/main/java/org/onap/policy/clamp/models/acm/persistence/provider/ProviderUtils.java
new file mode 100644
index 000000000..9510e5919
--- /dev/null
+++ b/models/src/main/java/org/onap/policy/clamp/models/acm/persistence/provider/ProviderUtils.java
@@ -0,0 +1,93 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 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=========================================================
+ */
+
+package org.onap.policy.clamp.models.acm.persistence.provider;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.function.Supplier;
+import java.util.stream.Collectors;
+import javax.ws.rs.core.Response;
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
+import org.onap.policy.common.parameters.BeanValidationResult;
+import org.onap.policy.models.base.PfAuthorative;
+import org.onap.policy.models.base.PfConcept;
+import org.onap.policy.models.base.PfModelRuntimeException;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaEntity;
+
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
+public final class ProviderUtils {
+
+    /**
+     * Convert a list of concepts to a list of Jpa objects.
+     *
+     * @param authorativeConceptList the list of concepts
+     * @param jpaSupplier the Jpa Supplier
+     * @param conceptDescription the description used for validation result
+     * @return the list of Jpa objects
+     */
+    public static <A, J extends PfConcept & PfAuthorative<A>> List<J> getJpaAndValidateList(
+            List<A> authorativeConceptList, Supplier<J> jpaSupplier, String conceptDescription) {
+        var validationResult = new BeanValidationResult(conceptDescription + " List", authorativeConceptList);
+
+        List<J> jpaConceptList = new ArrayList<>(authorativeConceptList.size());
+
+        for (A authorativeConcept : authorativeConceptList) {
+            var jpaConcept = jpaSupplier.get();
+            jpaConcept.fromAuthorative(authorativeConcept);
+            jpaConceptList.add(jpaConcept);
+
+            validationResult.addResult(jpaConcept.validate(conceptDescription));
+        }
+
+        if (!validationResult.isValid()) {
+            throw new PfModelRuntimeException(Response.Status.BAD_REQUEST, validationResult.getResult());
+        }
+        return jpaConceptList;
+    }
+
+    protected static <A, J extends PfConcept & PfAuthorative<A>> J getJpaAndValidate(A authorativeConcept,
+            Supplier<J> jpaSupplier, String conceptDescription) {
+        var validationResult = new BeanValidationResult(conceptDescription, authorativeConcept);
+
+        var jpaConcept = jpaSupplier.get();
+        jpaConcept.fromAuthorative(authorativeConcept);
+
+        validationResult.addResult(jpaConcept.validate(conceptDescription));
+
+        if (!validationResult.isValid()) {
+            throw new PfModelRuntimeException(Response.Status.BAD_REQUEST, validationResult.getResult());
+        }
+        return jpaConcept;
+    }
+
+    /**
+     * Convert JPA automation composition list to an authorative automation composition list.
+     *
+     * @param <T> the type of TOSCA entity
+     * @param <J> the type of JPA TOSCA entity
+     * @param jpaEntityList the list to convert
+     * @return the authorative list
+     */
+    public static <T extends ToscaEntity, J extends PfAuthorative<T>> List<T> asEntityList(List<J> jpaEntityList) {
+        return jpaEntityList.stream().map(J::toAuthorative).collect(Collectors.toList());
+    }
+}