Java tutorial
/**************************************************************** * 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.james.transport.mailets.remoteDelivery; import java.util.Arrays; import java.util.List; import javax.mail.Address; import javax.mail.internet.AddressException; import org.apache.mailet.MailAddress; import org.slf4j.Logger; import com.google.common.base.Function; import com.google.common.base.Optional; import com.google.common.base.Predicate; import com.google.common.collect.FluentIterable; import com.google.common.collect.ImmutableList; public class AddressesArrayToMailAddressListConverter { public static List<MailAddress> getAddressesAsMailAddress(Address[] addresses, final Logger logger) { if (addresses == null) { return ImmutableList.of(); } return FluentIterable.from(Arrays.asList(addresses)) .transform(new Function<Address, Optional<MailAddress>>() { @Override public Optional<MailAddress> apply(Address input) { try { return Optional.of(new MailAddress(input.toString())); } catch (AddressException e) { logger.debug("Can't parse unsent address: {}", e.getMessage()); return Optional.absent(); } } }).filter(new Predicate<Optional<MailAddress>>() { @Override public boolean apply(Optional<MailAddress> input) { return input.isPresent(); } }).transform(new Function<Optional<MailAddress>, MailAddress>() { @Override public MailAddress apply(Optional<MailAddress> input) { return input.get(); } }).toList(); } }