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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * 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.sshd.common.util.closeable;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Objects;

import org.apache.sshd.common.Closeable;
import org.apache.sshd.common.future.SshFuture;
import org.apache.sshd.common.util.ObjectBuilder;

/**
 * @author Apache MINA SSHD Project
 */
public final class Builder implements ObjectBuilder {
    private final Object lock;
    private final List closeables = new ArrayList<>();

    public Builder(Object lock) {
        this.lock = Objects.requireNonNull(lock, "No lock");
    }

    public Builder run(Object id, Runnable r) {
        return close(new SimpleCloseable(id, lock) {
            @Override
            protected void doClose(boolean immediately) {
                try {
                    r.run();
                } finally {
                    super.doClose(immediately);
                }
            }
        });
    }

    public > Builder when(SshFuture future) {
        if (future != null) {
            when(future.getId(), Collections.singleton(future));
        }
        return this;
    }

    @SafeVarargs
    public final > Builder when(SshFuture... futures) {
        return when(getClass().getSimpleName(), Arrays.asList(futures));
    }

    public > Builder when(Object id, Iterable> futures) {
        return close(new FuturesCloseable<>(id, lock, futures));
    }

    public Builder sequential(Closeable... closeables) {
        for (Closeable closeable : closeables) {
            close(closeable);
        }
        return this;
    }

    public Builder sequential(Object id, Iterable closeables) {
        return close(new SequentialCloseable(id, lock, closeables));
    }

    public Builder parallel(Closeable... closeables) {
        if (closeables.length == 1) {
            close(closeables[0]);
        } else if (closeables.length > 0) {
            parallel(getClass().getSimpleName(), Arrays.asList(closeables));
        }
        return this;
    }

    public Builder parallel(Object id, Iterable closeables) {
        return close(new ParallelCloseable(id, lock, closeables));
    }

    public Builder close(Closeable c) {
        if (c != null) {
            closeables.add(c);
        }
        return this;
    }

    @Override
    public Closeable build() {
        if (closeables.isEmpty()) {
            return new SimpleCloseable(getClass().getSimpleName(), lock);
        } else if (closeables.size() == 1) {
            return closeables.get(0);
        } else {
            return new SequentialCloseable(getClass().getSimpleName(), lock, closeables);
        }
    }
}