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.jclouds.elasticstack.functions; import static com.google.common.base.Preconditions.checkNotNull; import java.util.Map; import java.util.Map.Entry; import javax.inject.Singleton; import org.jclouds.elasticstack.domain.ClaimType; import org.jclouds.elasticstack.domain.Drive; import com.google.common.base.Function; import com.google.common.base.Joiner; import com.google.common.collect.ImmutableMap; /** * * @author Adrian Cole */ @Singleton public class BaseDriveToMap implements Function<Drive, Map<String, String>> { @Override public Map<String, String> apply(Drive from) { checkNotNull(from, "drive"); ImmutableMap.Builder<String, String> builder = ImmutableMap.builder(); builder.put("name", from.getName()); builder.put("size", from.getSize() + ""); if (from.getClaimType() != ClaimType.EXCLUSIVE) builder.put("claim:type", from.getClaimType().toString()); if (from.getReaders().size() != 0) builder.put("readers", Joiner.on(' ').join(from.getReaders())); if (from.getTags().size() != 0) builder.put("tags", Joiner.on(' ').join(from.getTags())); for (Entry<String, String> entry : from.getUserMetadata().entrySet()) builder.put("user:" + entry.getKey(), entry.getValue()); return builder.build(); } }