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.rackspace.clouddns.v1.functions; import java.util.Map; import java.util.Set; import org.jclouds.rackspace.clouddns.v1.domain.Record; import org.jclouds.rackspace.clouddns.v1.domain.RecordDetail; import com.google.common.base.Function; import com.google.common.collect.Maps; /** * Functions for working with Records. * * @author Everett Toews */ public class RecordFunctions { private RecordFunctions() { } /** * Take a Set of RecordDetails and return a Map of record id to the Record. */ public static Map<String, Record> toRecordMap(Set<RecordDetail> recordDetails) { Map<String, RecordDetail> idsToRecordDetails = Maps.uniqueIndex(recordDetails, RecordFunctions.GET_RECORD_ID); return Maps.transformValues(idsToRecordDetails, RecordFunctions.GET_RECORD); } /** * Take a RecordDetail and return its id. */ public static final Function<RecordDetail, String> GET_RECORD_ID = new Function<RecordDetail, String>() { public String apply(RecordDetail recordDetail) { return recordDetail.getId(); } }; /** * Take a RecordDetail and return its Record. */ public static final Function<RecordDetail, Record> GET_RECORD = new Function<RecordDetail, Record>() { public Record apply(RecordDetail recordDetail) { return recordDetail.getRecord(); } }; }