1 files changed, 71 insertions, 0 deletions
diff --git a/framework/src/onos/core/api/src/main/java/org/onosproject/net/flow/instructions/AbstractExtensionTreatment.java b/framework/src/onos/core/api/src/main/java/org/onosproject/net/flow/instructions/AbstractExtensionTreatment.java
new file mode 100644
index 00000000..ac7c771f
--- /dev/null
+++ b/framework/src/onos/core/api/src/main/java/org/onosproject/net/flow/instructions/AbstractExtensionTreatment.java
@@ -0,0 +1,71 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.
+ */
+
+package org.onosproject.net.flow.instructions;
+
+import java.lang.reflect.Field;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Abstract implementation of the set/get property methods of ExtensionInstruction.
+ */
+public abstract class AbstractExtensionTreatment implements ExtensionTreatment {
+
+    private static final String INVALID_KEY = "Invalid property key: ";
+    private static final String INVALID_TYPE = "Given type does not match field type: ";
+
+    @Override
+    public <T> void setPropertyValue(String key, T value) throws ExtensionPropertyException {
+        Class<?> clazz = this.getClass();
+        try {
+            Field field = clazz.getDeclaredField(key);
+            field.setAccessible(true);
+            field.set(this, value);
+        } catch (NoSuchFieldException | IllegalAccessException e) {
+            throw new ExtensionPropertyException(INVALID_KEY + key);
+        }
+    }
+
+    @Override
+    public <T> T getPropertyValue(String key) throws ExtensionPropertyException {
+        Class<?> clazz = this.getClass();
+        try {
+            Field field = clazz.getDeclaredField(key);
+            field.setAccessible(true);
+            @SuppressWarnings("unchecked")
+            T result = (T) field.get(this);
+            return result;
+        } catch (NoSuchFieldException | IllegalAccessException e) {
+            throw new ExtensionPropertyException(INVALID_KEY + key);
+        } catch (ClassCastException e) {
+            throw new ExtensionPropertyException(INVALID_TYPE + key);
+        }
+    }
+
+    @Override
+    public List<String> getProperties() {
+        Class<?> clazz = this.getClass();
+
+        List<String> fields = new ArrayList<>();
+
+        for (Field field : clazz.getDeclaredFields()) {
+            fields.add(field.getName());
+        }
+
+        return fields;
+    }
+}