co.elastic.clients.util.ListBuilder Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of elasticsearch-java Show documentation

Elasticsearch Java API Client

There is a newer version: 8.17.0

/*
 * Licensed to Elasticsearch B.V. under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch B.V. 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 co.elastic.clients.util;

import java.util.ArrayList;
import java.util.List;
import java.util.function.Function;
import java.util.function.Supplier;

public class ListBuilder implements ObjectBuilder> {
    private final List list = new ArrayList<>();
    private final Supplier builderCtor;

    public static > ListBuilder of(Supplier builderCtor) {
        return new ListBuilder<>(builderCtor);
    }

    public ListBuilder(Supplier builderCtor) {
        this.builderCtor = builderCtor;
    }

    public ListBuilder add(T value) {
        list.add(value);
        return this;
    }

    public ListBuilder add(Function> fn) {
        return add(fn.apply(builderCtor.get()).build());
    }

    public ListBuilder addAll(Iterable iterable) {
        for (T item: iterable) {
            list.add(item);
        }
        return this;
    }

    @Override
    public List build() {
        return list;
    }
}