Bharat saraswal | c46ee2a | 2016-02-25 02:26:43 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016 Open Networking Laboratory |
| 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 org.onosproject.yangutils.utils.io.impl; |
| 18 | |
| 19 | import java.io.BufferedInputStream; |
| 20 | import java.io.BufferedOutputStream; |
| 21 | import java.io.File; |
| 22 | import java.io.FileInputStream; |
| 23 | import java.io.FileNotFoundException; |
| 24 | import java.io.FileOutputStream; |
| 25 | import java.io.IOException; |
| 26 | import java.io.InputStream; |
| 27 | import java.io.ObjectInput; |
| 28 | import java.io.ObjectInputStream; |
| 29 | import java.io.ObjectOutput; |
| 30 | import java.io.ObjectOutputStream; |
| 31 | import java.io.OutputStream; |
| 32 | import java.util.ArrayList; |
| 33 | import java.util.List; |
| 34 | |
| 35 | /** |
Vinod Kumar S | 0871098 | 2016-03-03 19:55:30 +0530 | [diff] [blame^] | 36 | * Provides storage for Temp data while traversing data model tree for code |
| 37 | * generation. |
Bharat saraswal | c46ee2a | 2016-02-25 02:26:43 +0530 | [diff] [blame] | 38 | */ |
| 39 | public final class TempDataStore { |
| 40 | |
| 41 | /** |
| 42 | * Data Store types. |
| 43 | */ |
| 44 | public static enum TempDataStoreType { |
| 45 | |
| 46 | /** |
| 47 | * Methods. |
| 48 | */ |
| 49 | GETTER_METHODS, |
| 50 | |
| 51 | /** |
| 52 | * Methods. |
| 53 | */ |
| 54 | BUILDER_METHODS, |
| 55 | |
| 56 | /** |
| 57 | * Methods. |
| 58 | */ |
| 59 | BUILDER_INTERFACE_METHODS, |
| 60 | |
| 61 | /** |
| 62 | * Methods. |
| 63 | */ |
| 64 | IMPL_METHODS, |
| 65 | |
| 66 | /** |
| 67 | * Attributes. |
| 68 | */ |
| 69 | ATTRIBUTE, |
| 70 | |
| 71 | /** |
| 72 | * Imports. |
| 73 | */ |
| 74 | IMPORT |
| 75 | } |
| 76 | |
| 77 | /** |
| 78 | * File name string for Temp files of methods. |
| 79 | */ |
| 80 | private static final String GETTER_METHOD_FILE_NAME = "TempGetterMethodDataStore"; |
| 81 | |
| 82 | /** |
| 83 | * File name string for Temp files of methods. |
| 84 | */ |
| 85 | private static final String BUILDER_METHOD_FILE_NAME = "TempBuilderMethodDataStore"; |
| 86 | |
| 87 | /** |
| 88 | * File name string for Temp files of methods. |
| 89 | */ |
| 90 | private static final String BUILDER_INTERFACE_METHOD_FILE_NAME = "TempBuilderInterfaceMethodDataStore"; |
| 91 | |
| 92 | /** |
| 93 | * File name string for Temp files of methods. |
| 94 | */ |
| 95 | private static final String IMPL_METHOD_FILE_NAME = "TempImplMethodDataStore"; |
| 96 | |
| 97 | /** |
| 98 | * File name string for Temp files of attributes. |
| 99 | */ |
| 100 | private static final String ATTRIBUTE_FILE_NAME = "TempAttributeDataStore"; |
| 101 | |
| 102 | /** |
| 103 | * File name string for Temp files of imports. |
| 104 | */ |
| 105 | private static final String IMPORT_FILE_NAME = "TempImportDataStore"; |
| 106 | |
| 107 | /** |
| 108 | * File extension of Temp files. |
| 109 | */ |
| 110 | private static final String FILE_EXTENSION = ".tmp"; |
| 111 | |
| 112 | /** |
| 113 | * Directory for generating Temp files. |
| 114 | */ |
| 115 | private static final String GEN_DIR = "target/"; |
| 116 | |
| 117 | /** |
| 118 | * Buffer size. |
| 119 | */ |
| 120 | private static final int BUFFER_SIZE = 8 * 1024; |
| 121 | |
| 122 | /** |
| 123 | * Default constructor. |
| 124 | */ |
| 125 | private TempDataStore() { |
| 126 | } |
| 127 | |
| 128 | /** |
| 129 | * Writes specific info to a Temp file. |
| 130 | * |
| 131 | * @param data data to be stored |
| 132 | * @param type type of Temp data store |
| 133 | * @param className class name |
Vinod Kumar S | 0871098 | 2016-03-03 19:55:30 +0530 | [diff] [blame^] | 134 | * @throws IOException when fails to create a Temp data file |
Bharat saraswal | c46ee2a | 2016-02-25 02:26:43 +0530 | [diff] [blame] | 135 | */ |
| 136 | public static void setTempData(String data, TempDataStoreType type, String className) throws IOException { |
| 137 | |
| 138 | String fileName = ""; |
| 139 | if (type.equals(TempDataStoreType.ATTRIBUTE)) { |
| 140 | fileName = ATTRIBUTE_FILE_NAME; |
| 141 | } else if (type.equals(TempDataStoreType.GETTER_METHODS)) { |
| 142 | fileName = GETTER_METHOD_FILE_NAME; |
| 143 | } else if (type.equals(TempDataStoreType.BUILDER_INTERFACE_METHODS)) { |
| 144 | fileName = BUILDER_INTERFACE_METHOD_FILE_NAME; |
| 145 | } else if (type.equals(TempDataStoreType.BUILDER_METHODS)) { |
| 146 | fileName = BUILDER_METHOD_FILE_NAME; |
| 147 | } else if (type.equals(TempDataStoreType.IMPL_METHODS)) { |
| 148 | fileName = IMPL_METHOD_FILE_NAME; |
| 149 | } else { |
| 150 | fileName = IMPORT_FILE_NAME; |
| 151 | } |
| 152 | |
| 153 | File dir = new File(GEN_DIR + className + File.separator); |
| 154 | dir.mkdirs(); |
| 155 | try { |
| 156 | OutputStream file = new FileOutputStream(GEN_DIR + className + File.separator + fileName + FILE_EXTENSION); |
| 157 | OutputStream buffer = new BufferedOutputStream(file, BUFFER_SIZE); |
| 158 | |
| 159 | ObjectOutput output = new ObjectOutputStream(buffer); |
| 160 | try { |
| 161 | output.writeObject(data); |
| 162 | } finally { |
| 163 | output.close(); |
| 164 | } |
| 165 | } catch (IOException ex) { |
| 166 | throw new IOException("failed to serialize data"); |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * Get the Temp data. |
| 172 | * |
| 173 | * @param type type of Temp data store |
Vinod Kumar S | 0871098 | 2016-03-03 19:55:30 +0530 | [diff] [blame^] | 174 | * @param className name of the class |
| 175 | * @return list of attribute info |
| 176 | * @throws IOException when fails to read from the file |
| 177 | * @throws ClassNotFoundException when class is missing |
| 178 | * @throws FileNotFoundException when file is missing |
Bharat saraswal | c46ee2a | 2016-02-25 02:26:43 +0530 | [diff] [blame] | 179 | */ |
| 180 | public static List<String> getTempData(TempDataStoreType type, String className) |
| 181 | throws IOException, FileNotFoundException, ClassNotFoundException { |
| 182 | |
| 183 | String fileName = ""; |
| 184 | if (type.equals(TempDataStoreType.ATTRIBUTE)) { |
| 185 | fileName = ATTRIBUTE_FILE_NAME; |
| 186 | } else if (type.equals(TempDataStoreType.GETTER_METHODS)) { |
| 187 | fileName = GETTER_METHOD_FILE_NAME; |
| 188 | } else if (type.equals(TempDataStoreType.BUILDER_INTERFACE_METHODS)) { |
| 189 | fileName = BUILDER_INTERFACE_METHOD_FILE_NAME; |
| 190 | } else if (type.equals(TempDataStoreType.BUILDER_METHODS)) { |
| 191 | fileName = BUILDER_METHOD_FILE_NAME; |
| 192 | } else if (type.equals(TempDataStoreType.IMPL_METHODS)) { |
| 193 | fileName = IMPL_METHOD_FILE_NAME; |
| 194 | } else { |
| 195 | fileName = IMPORT_FILE_NAME; |
| 196 | } |
| 197 | try { |
| 198 | InputStream file = new FileInputStream(GEN_DIR + className + File.separator + fileName + FILE_EXTENSION); |
| 199 | InputStream buffer = new BufferedInputStream(file); |
| 200 | ObjectInput input = new ObjectInputStream(buffer); |
| 201 | try { |
| 202 | String data = (String) input.readObject(); |
| 203 | List<String> recoveredData = new ArrayList<>(); |
| 204 | recoveredData.add(data); |
| 205 | return recoveredData; |
| 206 | } finally { |
| 207 | input.close(); |
| 208 | file.close(); |
| 209 | } |
| 210 | } catch (FileNotFoundException ex) { |
| 211 | throw new FileNotFoundException("No such file or directory."); |
| 212 | } catch (ClassNotFoundException ex) { |
| 213 | throw new ClassNotFoundException("failed to fetch the Temp data file."); |
| 214 | } |
| 215 | } |
| 216 | } |