StringLookupAdapter.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.commons.configuration2.interpol;

import java.util.Objects;

import org.apache.commons.text.lookup.StringLookup;

/**
 * Wraps an Apache Commons Text {@link StringLookup} as an Apache Commons Configuration {@link Lookup}.
 *
 * @since 2.4
 */
final class StringLookupAdapter implements Lookup {

    /**
     * The StringLookup delegate.
     */
    private final StringLookup stringLookup;

    StringLookupAdapter(final StringLookup stringLookup) {
        this.stringLookup = Objects.requireNonNull(stringLookup, "stringLookup");
    }

    @Override
    public Object lookup(final String key) {
        return stringLookup.lookup(key);
    }

}