2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2020-2021 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
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16 * See the License for the specific language governing permissions and
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18 * ============LICENSE_END=========================================================
21 package org.onap.policy.controlloop.actorserviceprovider;
23 import lombok.AllArgsConstructor;
26 * Object whose {@link #toString()} method invokes {@link Object#toString()} on another
27 * object, on-demand. This assumes that the other object's method returns an object
28 * identifier. This is typically used to include an object's identifier in a log message.
31 public class DelayedIdentString {
33 * String to return for null objects or null object identifiers.
35 public static final String NULL_STRING = "null";
37 private final Object object;
40 * Gets the object's identifier, after stripping anything appearing before '@'.
43 public String toString() {
48 var ident = objectToString();
53 int index = ident.indexOf('@');
54 return (index > 0 ? ident.substring(index) : ident);
58 * Invokes the object's {@link Object#toString()} method.
60 * @return the output from the object's {@link Object#toString()} method
62 protected String objectToString() {
63 return object.toString();