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Plovercrest server library.

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/*
 * Copyright (c) 2010-2017, KolibriFX AS. Licensed under the Apache License, version 2.0.
 */

package com.kolibrifx.plovercrest.server.streams;

import java.util.Collection;
import java.util.Collections;
import com.kolibrifx.common.Disposable;
import com.kolibrifx.common.NullDisposable;
import com.kolibrifx.plovercrest.server.TableInfo;

/**
 * Base class for a {@link StreamProvider} with a single name, which can be either a concrete name
 * or a template.
 */
public abstract class SingleNameStreamProvider implements StreamProvider {
    protected final String spec;

    public SingleNameStreamProvider(final String spec) {
        this.spec = spec;
    }

    @Override
    public Collection list() {
        return Collections.singleton(new StreamInfo(spec, false));
    }

    @Override
    public boolean tryCreate(final TableInfo info) {
        return false;
    }

    @Override
    public Disposable addAvailableStreamsListener(final StreamNamesListener listener) {
        listener.onInit(Collections.singleton(spec));
        return new NullDisposable();
    }
}