NullableProperties.java

/*
 *    Copyright 2006-2026 the original author or authors.
 *
 *    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
 *
 *       https://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.mybatis.generator.config;

import java.util.HashMap;
import java.util.Map;

import org.jspecify.annotations.Nullable;

/**
 * NullableProperties is a utility class for handling properties that may be null.
 *
 */
public class NullableProperties {
    private final Map<String, String> properties = new HashMap<>();

    public @Nullable String getProperty(String key) {
        return properties.getOrDefault(key, null);
    }

    /**
     * Stores the value only if the value is non-null.
     *
     * @param key property key or name
     * @param value property value
     */
    public void put(String key, @Nullable String value) {
        if (value != null) {
            properties.put(key, value);
        }
    }
}