1 /* 2 * Copyright (C) 2015 The Libphonenumber Authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.i18n.phonenumbers; 18 19 import com.google.i18n.phonenumbers.Phonemetadata.PhoneMetadata; 20 import java.util.concurrent.atomic.AtomicReference; 21 22 /** 23 * Implementation of {@link MetadataSource} that reads from a single resource file. 24 */ 25 final class SingleFileMetadataSourceImpl implements MetadataSource { 26 // The name of the binary file containing phone number metadata for different regions. 27 // This enables us to set up with different metadata, such as for testing. 28 private final String phoneNumberMetadataFileName; 29 30 // The {@link MetadataLoader} used to inject alternative metadata sources. 31 private final MetadataLoader metadataLoader; 32 33 private final AtomicReference<MetadataManager.SingleFileMetadataMaps> phoneNumberMetadataRef = 34 new AtomicReference<MetadataManager.SingleFileMetadataMaps>(); 35 36 // It is assumed that metadataLoader is not null. Checks should happen before passing it in here. 37 // @VisibleForTesting 38 SingleFileMetadataSourceImpl(String phoneNumberMetadataFileName, MetadataLoader metadataLoader) { 39 this.phoneNumberMetadataFileName = phoneNumberMetadataFileName; 40 this.metadataLoader = metadataLoader; 41 } 42 43 // It is assumed that metadataLoader is not null. Checks should happen before passing it in here. 44 SingleFileMetadataSourceImpl(MetadataLoader metadataLoader) { 45 this(MetadataManager.SINGLE_FILE_PHONE_NUMBER_METADATA_FILE_NAME, metadataLoader); 46 } 47 48 @Override 49 public PhoneMetadata getMetadataForRegion(String regionCode) { 50 return MetadataManager.getSingleFileMetadataMaps(phoneNumberMetadataRef, 51 phoneNumberMetadataFileName, metadataLoader).get(regionCode); 52 } 53 54 @Override 55 public PhoneMetadata getMetadataForNonGeographicalRegion(int countryCallingCode) { 56 // A country calling code is non-geographical if it only maps to the non-geographical region 57 // code, i.e. "001". If this is not true of the given country calling code, then we will return 58 // null here. If not for the atomic reference, such as if we were loading in multiple stages, we 59 // would check that the passed in country calling code was indeed non-geographical to avoid 60 // loading costs for a null result. Here though we do not check this since the entire data must 61 // be loaded anyway if any of it is needed at some point in the life cycle of this class. 62 return MetadataManager.getSingleFileMetadataMaps(phoneNumberMetadataRef, 63 phoneNumberMetadataFileName, metadataLoader).get(countryCallingCode); 64 } 65 } 66
