Make validators extensible

Modified the validator to make it extensible.  Also added annotations
to:
- cascade a validation to a sub-object
- perform regex
- examine items in a list
- examine entries in a map

Still need more junit tests.

Issue-ID: POLICY-2648
Change-Id: I94f1b9e8fbf7a6b9b002d0b05cc9119bdfcf8bf2
Signed-off-by: Jim Hahn <jrh3@att.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/common-parameters/src/main/java/org/onap/policy/common/parameters/annotations/Valid.java b/common-parameters/src/main/java/org/onap/policy/common/parameters/annotations/Valid.java
new file mode 100644
index 00000000..a3a1d59f
--- /dev/null
+++ b/common-parameters/src/main/java/org/onap/policy/common/parameters/annotations/Valid.java
@@ -0,0 +1,34 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020 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.common.parameters.annotations;
+
+import static java.lang.annotation.ElementType.FIELD;
+import static java.lang.annotation.ElementType.TYPE;
+import static java.lang.annotation.RetentionPolicy.RUNTIME;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+
+@Retention(RUNTIME)
+@Target({TYPE, FIELD})
+public @interface Valid {
+
+}