Improve validation, add hierarchical validation

Parameter validaiton updated to generically support nested groups of
parameters, and nested maps of parameters.

Unit test showing JSON parameter input added.
Unit test showing YAML parameter inout added.

Test parameter group classes moved into subdirectory

This allows parameters to be unmarshaled seamlessly from JSON and YAML
files.

Change-Id: I768e11f31ee7f62299c4d5d95ab68a005d1aff16
Issue-ID: POLICY-922
Signed-off-by: liamfallon <liam.fallon@ericsson.com>

1 files changed, 78 insertions, 0 deletions

diff --git a/common-parameters/src/main/java/org/onap/policy/common/parameters/ValidationResult.java b/common-parameters/src/main/java/org/onap/policy/common/parameters/ValidationResult.java
new file mode 100644
index 00000000..b97ccda0
--- /dev/null
+++ b/common-parameters/src/main/java/org/onap/policy/common/parameters/ValidationResult.java
@@ -0,0 +1,78 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2018 Ericsson. 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.
+ * 
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.common.parameters;
+
+/**
+ * This interface defines the result of a parameter validation.
+ */
+public interface ValidationResult {
+    /**
+     * Gets the name of the entity being validated.
+     *
+     * @return the name
+     */
+    public String getName();
+
+    /**
+     * Gets the status of validation.
+     *
+     * @return the status
+     */
+    public ValidationStatus getStatus();
+
+    /**
+     * Checks if the result is valid.
+     *
+     * @return true, if is valid
+     */
+    default boolean isValid() {
+        return getStatus().isValid(); 
+    }
+
+    /**
+     * Gets the validation result.
+     *
+     * @return the full validation result
+     */
+    default String getResult() {
+        return getResult(
+                        ParameterConstants.DEFAULT_INITIAL_RESULT_INDENTATION,
+                        ParameterConstants.DEFAULT_RESULT_INDENTATION,
+                        ParameterConstants.DO_NOT_SHOW_CLEAN_RESULTS);
+    }
+
+    /**
+     * Gets the validation result.
+     *
+     * @param initialIndentation the indentation to use on the main result output
+     * @param subIndentation the indentation to use on sub parts of the result output
+     * @param showClean output information on clean fields
+     * @return the result
+     */
+    public String getResult(final String initialIndentation, final String subIndentation, final boolean showClean);
+    
+    /**
+     * Set a validation result. 
+     * @param status The validation status the field is receiving
+     * @param message The validation message explaining the validation status
+     */
+    public void setResult(final ValidationStatus status, final String message);
+}
\ No newline at end of file