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Access to the Neo4j graph database through Java

There is a newer version: 5.27.0

/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [https://neo4j.com]
 *
 * 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.
 */
package org.neo4j.driver.internal.util;

import java.util.Map;
import java.util.Map.Entry;

public abstract class Format {
    private Format() {
        throw new UnsupportedOperationException();
    }

    // formats map using ':' as key-value separator instead of default '='
    public static  String formatPairs(Map entries) {
        var iterator = entries.entrySet().iterator();
        switch (entries.size()) {
            case 0 -> {
                return "{}";
            }
            case 1 -> {
                return String.format("{%s}", keyValueString(iterator.next()));
            }
            default -> {
                var builder = new StringBuilder();
                builder.append("{");
                builder.append(keyValueString(iterator.next()));
                while (iterator.hasNext()) {
                    builder.append(',');
                    builder.append(' ');
                    builder.append(keyValueString(iterator.next()));
                }
                builder.append("}");
                return builder.toString();
            }
        }
    }

    private static  String keyValueString(Entry entry) {
        return String.format("%s: %s", entry.getKey(), entry.getValue());
    }

    /**
     * Returns the submitted value if it is not null or an empty string if it is.
     */
    public static String valueOrEmpty(String value) {
        return value != null ? value : "";
    }
}