-/*
+/*-
* ============LICENSE_START=======================================================
- * Copyright (C) 2019 Nordix Foundation.
+ * Copyright (C) 2019-2021 Nordix Foundation.
* Modifications Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
package org.onap.policy.models.base;
import java.lang.reflect.InvocationTargetException;
+import java.util.Collection;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
-import java.util.function.UnaryOperator;
+import java.util.function.Function;
import java.util.stream.Collectors;
import javax.ws.rs.core.Response;
+import org.apache.commons.collections4.CollectionUtils;
+import org.apache.commons.collections4.MapUtils;
/**
* Utility class for Policy Framework concept utilities.
}
/**
- * Convenience method to apply a mapping function to all of the elements of a list,
- * generating a new list.
+ * Compare two collections of the same type, nulls are allowed.
+ *
+ * @param leftCollection the first collection
+ * @param rightCollection the second collection
+ * @return a measure of the comparison
+ */
+ public static <T> int compareCollections(final Collection<T> leftCollection, final Collection<T> rightCollection) {
+ if (CollectionUtils.isEmpty(leftCollection) && CollectionUtils.isEmpty(rightCollection)) {
+ return 0;
+ }
+
+ return compareObjects(leftCollection, rightCollection);
+ }
+
+
+ /**
+ * Compare two maps of the same type, nulls are allowed.
+ *
+ * @param leftMap the first map
+ * @param rightMap the second map
+ * @return a measure of the comparison
+ */
+ public static <K, V> int compareMaps(final Map<K, V> leftMap, final Map<K, V> rightMap) {
+ if (MapUtils.isEmpty(leftMap) && MapUtils.isEmpty(rightMap)) {
+ return 0;
+ }
+
+ return compareObjects(leftMap, rightMap);
+ }
+
+ /**
+ * Convenience method to apply a mapping function to all of the elements of a list, generating a new list.
*
* @param source list whose elements are to be mapped, or {@code null}
* @param mapFunc mapping function
* @param defaultValue value to be returned if source is {@code null}
* @return a new list, containing mappings of all of the items in the original list
*/
- public static <T> List<T> mapList(List<T> source, UnaryOperator<T> mapFunc, List<T> defaultValue) {
+ public static <T, R> List<R> mapList(List<T> source, Function<T, R> mapFunc, List<R> defaultValue) {
if (source == null) {
return defaultValue;
}
}
/**
- * Convenience method to apply a mapping function to all of the elements of a list,
- * generating a new list.
+ * Convenience method to apply a mapping function to all of the elements of a list, generating a new list.
*
* @param source list whose elements are to be mapped, or {@code null}
* @param mapFunc mapping function
- * @return a new list, containing mappings of all of the items in the original list,
- * or {@code null} if the source is {@code null}
+ * @return a new list, containing mappings of all of the items in the original list, or {@code null} if the source
+ * is {@code null}
*/
- public static <T> List<T> mapList(List<T> source, UnaryOperator<T> mapFunc) {
+ public static <T, R> List<R> mapList(List<T> source, Function<T, R> mapFunc) {
return mapList(source, mapFunc, null);
}
/**
- * Convenience method to apply a mapping function to all of the values of a map,
- * generating a new map.
+ * Convenience method to apply a mapping function to all of the values of a map, generating a new map.
*
* @param source map whose values are to be mapped, or {@code null}
* @param mapFunc mapping function
* @param defaultValue value to be returned if source is {@code null}
* @return a new map, containing mappings of all of the items in the original map
*/
- public static <T> Map<String, T> mapMap(Map<String, T> source, UnaryOperator<T> mapFunc,
- Map<String, T> defaultValue) {
+ public static <K, T, R> Map<K, R> mapMap(Map<K, T> source, Function<T, R> mapFunc,
+ Map<K, R> defaultValue) {
if (source == null) {
return defaultValue;
}
- Map<String, T> map = new LinkedHashMap<>();
- for (Entry<String, T> ent : source.entrySet()) {
+ Map<K, R> map = new LinkedHashMap<>();
+ for (Entry<K, T> ent : source.entrySet()) {
map.put(ent.getKey(), mapFunc.apply(ent.getValue()));
}
}
/**
- * Convenience method to apply a mapping function to all of the values of a map,
- * generating a new map.
+ * Convenience method to apply a mapping function to all of the values of a map, generating a new map.
*
* @param source map whose values are to be mapped, or {@code null}
* @param mapFunc mapping function
- * @return a new map, containing mappings of all of the items in the original map,
- * or {@code null} if the source is {@code null}
+ * @return a new map, containing mappings of all of the items in the original map, or {@code null} if the source is
+ * {@code null}
*/
- public static <T> Map<String, T> mapMap(Map<String, T> source, UnaryOperator<T> mapFunc) {
+ public static <K, T, R> Map<K, R> mapMap(Map<K, T> source, Function<T, R> mapFunc) {
return mapMap(source, mapFunc, null);
}
return clazz.getConstructor(clazz).newInstance(source);
} catch (InstantiationException | IllegalAccessException | InvocationTargetException | NoSuchMethodException
- | RuntimeException e) {
+ | RuntimeException e) {
throw new PfModelRuntimeException(Response.Status.INTERNAL_SERVER_ERROR,
- "error copying concept key class: " + source.getClass().getName(), e);
+ "error copying concept key class: " + source.getClass().getName(), e);
}
}
}
Code Review / policy / models.git / blobdiff