1 files changed, 84 insertions, 0 deletions
diff --git a/common-parameters/src/main/java/org/onap/policy/common/parameters/EntryValidator.java b/common-parameters/src/main/java/org/onap/policy/common/parameters/EntryValidator.java
new file mode 100644
index 00000000..965c95e5
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+++ b/common-parameters/src/main/java/org/onap/policy/common/parameters/EntryValidator.java
@@ -0,0 +1,84 @@
+/*-
+ * ============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;
+
+import java.lang.annotation.Annotation;
+import java.util.Map;
+
+/**
+ * Validator of an entry within a Map.
+ */
+public class EntryValidator {
+    private final ItemValidator keyValidator;
+    private final ItemValidator valueValidator;
+
+    /**
+     * Constructs the object.
+     *
+     * @param validator provider of validation methods
+     * @param keyAnnotationContainer an annotation containing validation annotations to be
+     *        applied to the entry key
+     * @param valueAnnotationContainer an annotation containing validation annotations to
+     *        be applied to the entry value
+     */
+    public EntryValidator(BeanValidator validator, Annotation keyAnnotationContainer,
+                    Annotation valueAnnotationContainer) {
+        keyValidator = new ItemValidator(validator, keyAnnotationContainer);
+        valueValidator = new ItemValidator(validator, valueAnnotationContainer);
+    }
+
+    public boolean isEmpty() {
+        return (keyValidator.isEmpty() && valueValidator.isEmpty());
+    }
+
+    /**
+     * Performs validation of a single entry.
+     *
+     * @param result validation results are added here
+     * @param entry value to be validated
+     */
+    public <K, V> void validateEntry(BeanValidationResult result, Map.Entry<K, V> entry) {
+        String name = getName(entry);
+
+        BeanValidationResult result2 = new BeanValidationResult(name, entry);
+        keyValidator.validateValue(result2, "key", entry.getKey());
+        valueValidator.validateValue(result2, "value", entry.getValue());
+
+        if (!result2.isClean()) {
+            result.addResult(result2);
+        }
+    }
+
+    /**
+     * Gets a name for the entry.
+     *
+     * @param entry entry whose name is to be determined
+     * @return a name for the entry
+     */
+    protected <K, V> String getName(Map.Entry<K, V> entry) {
+        K key = entry.getKey();
+        if (key == null) {
+            return "";
+        }
+
+        return key.toString();
+    }
+}