Sketching out component configuration model & API.
Added initial cut of implementation.
Finished implementation; ready for merge.

Change-Id: I385181c0591604a5c44986b97fb881eba7e0528e
diff --git a/core/api/src/test/java/org/onosproject/cfg/ComponentConfigAdapter.java b/core/api/src/test/java/org/onosproject/cfg/ComponentConfigAdapter.java
new file mode 100644
index 0000000..a1abd18
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+++ b/core/api/src/test/java/org/onosproject/cfg/ComponentConfigAdapter.java
@@ -0,0 +1,53 @@
+/*
+ * 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.cfg;
+
+import java.util.Set;
+
+/**
+ * Adapter for testing against component configuration service.
+ */
+public class ComponentConfigAdapter implements ComponentConfigService {
+    @Override
+    public Set<String> getComponentNames() {
+        return null;
+    }
+
+    @Override
+    public void registerProperties(Class<?> componentClass) {
+
+    }
+
+    @Override
+    public void unregisterProperties(Class<?> componentClass, boolean clear) {
+
+    }
+
+    @Override
+    public Set<ConfigProperty> getProperties(String componentName) {
+        return null;
+    }
+
+    @Override
+    public void setProperty(String componentName, String name, String value) {
+
+    }
+
+    @Override
+    public void unsetProperty(String componentName, String name) {
+
+    }
+}
diff --git a/core/api/src/test/java/org/onosproject/cfg/ConfigPropertyTest.java b/core/api/src/test/java/org/onosproject/cfg/ConfigPropertyTest.java
new file mode 100644
index 0000000..b4ba863
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+++ b/core/api/src/test/java/org/onosproject/cfg/ConfigPropertyTest.java
@@ -0,0 +1,97 @@
+/*
+ * 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.cfg;
+
+import com.google.common.testing.EqualsTester;
+import org.junit.Test;
+import org.onosproject.cfg.ConfigProperty.Type;
+
+import static org.junit.Assert.*;
+import static org.onosproject.cfg.ConfigProperty.Type.*;
+import static org.onosproject.cfg.ConfigProperty.defineProperty;
+import static org.onosproject.cfg.ConfigProperty.resetProperty;
+import static org.onosproject.cfg.ConfigProperty.setProperty;
+
+/**
+ * Set of tests of the configuration property class.
+ */
+public class ConfigPropertyTest {
+
+    @Test
+    public void basics() {
+        ConfigProperty p = defineProperty("foo", STRING, "bar", "Foo Prop");
+        validate(p, "foo", STRING, "bar", "bar");
+        p = setProperty(p, "BAR");
+        validate(p, "foo", STRING, "BAR", "bar");
+        p = resetProperty(p);
+        validate(p, "foo", STRING, "bar", "bar");
+    }
+
+    @Test
+    public void equality() {
+        new EqualsTester()
+                .addEqualityGroup(defineProperty("foo", STRING, "bar", "Desc"),
+                                  defineProperty("foo", STRING, "goo", "Desc"))
+                .addEqualityGroup(defineProperty("bar", STRING, "bar", "Desc"),
+                                  defineProperty("bar", STRING, "goo", "Desc"))
+                .testEquals();
+    }
+
+    private void validate(ConfigProperty p, String name, Type type, String v, String dv) {
+        assertEquals("incorrect name", name, p.name());
+        assertEquals("incorrect type", type, p.type());
+        assertEquals("incorrect value", v, p.value());
+        assertEquals("incorrect default", dv, p.defaultValue());
+        assertEquals("incorrect description", "Foo Prop", p.description());
+    }
+
+    @Test
+    public void asInteger() {
+        ConfigProperty p = defineProperty("foo", INTEGER, "123", "Foo Prop");
+        validate(p, "foo", INTEGER, "123", "123");
+        assertEquals("incorrect value", 123, p.asInteger());
+        assertEquals("incorrect value", 123L, p.asLong());
+    }
+
+    @Test
+    public void asLong() {
+        ConfigProperty p = defineProperty("foo", LONG, "123", "Foo Prop");
+        validate(p, "foo", LONG, "123", "123");
+        assertEquals("incorrect value", 123L, p.asLong());
+    }
+
+    @Test
+    public void asFloat() {
+        ConfigProperty p = defineProperty("foo", FLOAT, "123.0", "Foo Prop");
+        validate(p, "foo", FLOAT, "123.0", "123.0");
+        assertEquals("incorrect value", 123.0, p.asFloat(), 0.01);
+        assertEquals("incorrect value", 123.0, p.asDouble(), 0.01);
+    }
+
+    @Test
+    public void asDouble() {
+        ConfigProperty p = defineProperty("foo", DOUBLE, "123.0", "Foo Prop");
+        validate(p, "foo", DOUBLE, "123.0", "123.0");
+        assertEquals("incorrect value", 123.0, p.asDouble(), 0.01);
+    }
+
+    @Test
+    public void asBoolean() {
+        ConfigProperty p = defineProperty("foo", BOOLEAN, "true", "Foo Prop");
+        validate(p, "foo", BOOLEAN, "true", "true");
+        assertEquals("incorrect value", true, p.asBoolean());
+    }
+}
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