Fix checkstyle issues in policy-core

Also deleted the checkstyle suppression file.

Change-Id: I93e9f9154b614b56f7826ec978e1a99bd9369348
Issue-ID: POLICY-1907
Signed-off-by: Jim Hahn <jrh3@att.com>

1 files changed, 102 insertions, 0 deletions

diff --git a/policy-core/src/main/java/org/onap/policy/drools/core/PolicySessionFeatureApi.java b/policy-core/src/main/java/org/onap/policy/drools/core/PolicySessionFeatureApi.java
new file mode 100644
index 00000000..3d259954
--- /dev/null
+++ b/policy-core/src/main/java/org/onap/policy/drools/core/PolicySessionFeatureApi.java
@@ -0,0 +1,102 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * policy-core
+ * ================================================================================
+ * Copyright (C) 2017-2019 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.policy.drools.core;
+
+import org.kie.api.runtime.KieSession;
+import org.onap.policy.common.utils.services.OrderedService;
+import org.onap.policy.common.utils.services.OrderedServiceImpl;
+
+/**
+ * This interface provides a way to invoke optional features at various
+ * points in the code. At appropriate points in the
+ * application, the code iterates through this list, invoking these optional
+ * methods. Most of the methods here are notification only -- these tend to
+ * return a 'void' value. In other cases, such as 'activatePolicySession',
+ * may
+ */
+public interface PolicySessionFeatureApi extends OrderedService {
+    /**
+     * 'FeatureAPI.impl.getList()' returns an ordered list of objects
+     * implementing the 'FeatureAPI' interface.
+     */
+    public static OrderedServiceImpl<PolicySessionFeatureApi> impl =
+            new OrderedServiceImpl<>(PolicySessionFeatureApi.class);
+
+    /**
+     * This method is called during initialization at a point right after
+     * 'PolicyContainer' initialization has completed.
+     *
+     * @param args standard 'main' arguments, which are currently ignored
+     * @param configDir the relative directory containing configuration files
+     */
+    public default void globalInit(String[] args, String configDir) {}
+
+    /**
+     * This method is used to create a 'KieSession' as part of a
+     * 'PolicyContainer'. The caller of this method will iterate over the
+     * implementers of this interface until one returns a non-null value.
+     *
+     * @param policyContainer the 'PolicyContainer' instance containing this
+     *     session
+     * @param name the name of the KieSession (which is also the name of
+     *     the associated PolicySession)
+     * @param kieBaseName the name of the 'KieBase' instance containing
+     *     this session
+     * @return a new KieSession, if one was created, or 'null' if not
+     *     (this depends on the capabilities and state of the object implementing
+     *     this interface)
+     */
+    public default KieSession activatePolicySession(PolicyContainer policyContainer, String name, String kieBaseName) {
+        return null;
+    }
+
+    /**
+     * This method is called after a new 'PolicySession' has been initialized,
+     * and linked to the 'PolicyContainer'.
+     *
+     * @param policySession the new 'PolicySession' instance
+     */
+    public default void newPolicySession(PolicySession policySession) {}
+
+    /**
+     * This method is called to select the 'ThreadModel' instance associated
+     * with a 'PolicySession' instance.
+     */
+    public default PolicySession.ThreadModel selectThreadModel(PolicySession session) {
+        return null;
+    }
+
+    /**
+     * This method is called after 'KieSession.dispose()' is called.
+     *
+     * @param policySession the 'PolicySession' object that wrapped the
+     *     'KieSession'
+     */
+    public default void disposeKieSession(PolicySession policySession) {}
+
+    /**
+     * This method is called after 'KieSession.destroy()' is called.
+     *
+     * @param policySession the 'PolicySession' object that wrapped the
+     *     'KieSession'
+     */
+    public default void destroyKieSession(PolicySession policySession) {}
+}