StringListMapper.java

/**
 *  Copyright 2012-2017 Gunnar Morling (http://www.gunnarmorling.de/)
 *  and/or other contributors as indicated by the @authors tag. See the
 *  copyright.txt file in the distribution for a full listing of all
 *  contributors.
 *
 *  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.mapstruct.ap.test.java8stream.streamtononiterable;

import java.util.Arrays;
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class StringListMapper {

    public String stringListToString(Stream<String> strings) {
        return strings == null ? null : strings.collect( Collectors.joining( "-" ) );
    }

    public Stream<String> stringToStringList(String string) {
        return string == null ? null : Arrays.asList( string.split( "-" ) ).stream();
    }
}