com.signalfx.shaded.jetty.util.component.DumpableCollection Maven / Gradle / Ivy

//
//  ========================================================================
//  Copyright (c) 1995-2022 Mort Bay Consulting Pty Ltd and others.
//  ------------------------------------------------------------------------
//  All rights reserved. This program and the accompanying materials
//  are made available under the terms of the Eclipse Public License v1.0
//  and Apache License v2.0 which accompanies this distribution.
//
//      The Eclipse Public License is available at
//      http://www.eclipse.org/legal/epl-v10.html
//
//      The Apache License v2.0 is available at
//      http://www.opensource.org/licenses/apache2.0.php
//
//  You may elect to redistribute this code under either of these licenses.
//  ========================================================================
//

package com.signalfx.shaded.jetty.util.component;

import java.io.IOException;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;

public class DumpableCollection implements Dumpable
{
    private final String _name;
    private final Collection _collection;

    public DumpableCollection(String name, Collection collection)
    {
        _name = name;
        _collection = collection;
    }

    public static DumpableCollection fromArray(String name, Object[] array)
    {
        return new DumpableCollection(name, array == null ? Collections.emptyList() : Arrays.asList(array));
    }

    public static DumpableCollection from(String name, Object... items)
    {
        return new DumpableCollection(name, items == null ? Collections.emptyList() : Arrays.asList(items));
    }

    @Override
    public String dump()
    {
        return Dumpable.dump(this);
    }

    @Override
    public void dump(Appendable out, String indent) throws IOException
    {
        Object[] array = (_collection == null ? null : _collection.toArray());
        Dumpable.dumpObjects(out, indent, _name + " size=" + (array == null ? 0 : array.length), array);
    }
}