| 1 | /* |
| 2 | |
| 3 | Derby - Class org.apache.derby.impl.io.JarStorageFactory |
| 4 | |
| 5 | Copyright 2004 The Apache Software Foundation or its licensors, as applicable. |
| 6 | |
| 7 | Licensed under the Apache License, Version 2.0 (the "License"); |
| 8 | you may not use this file except in compliance with the License. |
| 9 | You may obtain a copy of the License at |
| 10 | |
| 11 | http://www.apache.org/licenses/LICENSE-2.0 |
| 12 | |
| 13 | Unless required by applicable law or agreed to in writing, software |
| 14 | distributed under the License is distributed on an "AS IS" BASIS, |
| 15 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 16 | See the License for the specific language governing permissions and |
| 17 | limitations under the License. |
| 18 | |
| 19 | */ |
| 20 | |
| 21 | package org.apache.derby.impl.io; |
| 22 | |
| 23 | import org.apache.derby.iapi.services.sanity.SanityManager; |
| 24 | |
| 25 | import org.apache.derby.io.StorageFactory; |
| 26 | import org.apache.derby.io.StorageFile; |
| 27 | |
| 28 | import java.io.File; |
| 29 | import java.io.FileNotFoundException; |
| 30 | import java.io.InputStream; |
| 31 | import java.io.OutputStream; |
| 32 | import java.io.IOException; |
| 33 | |
| 34 | import java.util.Properties; |
| 35 | import java.util.zip.ZipEntry; |
| 36 | import java.util.zip.ZipFile; |
| 37 | |
| 38 | /** |
| 39 | * This class provides a Jar file based implementation of the StorageFactory interface. It is used by the |
| 40 | * database engine to access persistent data and transaction logs under the jar subsubprotocol. |
| 41 | */ |
| 42 | |
| 43 | public class JarStorageFactory extends BaseStorageFactory |
| 44 | { |
| 45 | ZipFile zipData; |
| 46 | |
| 47 | /** |
| 48 | * Construct a persistent StorageFile from a path name. |
| 49 | * |
| 50 | * @param path The path name of the file |
| 51 | * |
| 52 | * @return A corresponding StorageFile object |
| 53 | */ |
| 54 | StorageFile newPersistentFile( String path) |
| 55 | { |
| 56 | return new JarDBFile( this, path); |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * Construct a StorageFile from a directory and file name. |
| 61 | * |
| 62 | * @param directoryName The directory part of the path name. Must not be null, nor may it be in the temp dir. |
| 63 | * @param fileName The name of the file within the directory. |
| 64 | * |
| 65 | * @return A corresponding StorageFile object |
| 66 | */ |
| 67 | StorageFile newPersistentFile( String directoryName, String fileName) |
| 68 | { |
| 69 | if( directoryName == null || directoryName.length() == 0) |
| 70 | return newPersistentFile( fileName); |
| 71 | return new JarDBFile( this, directoryName, fileName); |
| 72 | } |
| 73 | |
| 74 | /** |
| 75 | * Construct a StorageFile from a directory and file name. |
| 76 | * |
| 77 | * @param directoryName The directory part of the path name. |
| 78 | * @param fileName The name of the file within the directory. |
| 79 | * |
| 80 | * @return A corresponding StorageFile object |
| 81 | */ |
| 82 | StorageFile newPersistentFile( StorageFile directoryName, String fileName) |
| 83 | { |
| 84 | if( directoryName == null) |
| 85 | return newPersistentFile( fileName); |
| 86 | return new JarDBFile( (JarDBFile) directoryName, fileName); |
| 87 | } |
| 88 | |
| 89 | void doInit() throws IOException |
| 90 | { |
| 91 | if( dataDirectory == null) |
| 92 | return; |
| 93 | // Parse the dataDirectory name. It should be of the form "(jar-file)directory" or "jar-file" |
| 94 | int offset = 0; |
| 95 | while( offset < dataDirectory.length() & Character.isSpaceChar( dataDirectory.charAt( offset))) |
| 96 | offset ++; |
| 97 | int leftParen = -1; |
| 98 | int rightParen = -1; |
| 99 | if( offset < dataDirectory.length()) |
| 100 | { |
| 101 | leftParen = dataDirectory.indexOf( '(', offset); |
| 102 | if( leftParen >= 0) |
| 103 | rightParen = dataDirectory.indexOf( ')', leftParen + 1); |
| 104 | } |
| 105 | File jarFile = null; |
| 106 | if( rightParen > 0) |
| 107 | { |
| 108 | jarFile = getJarFile( dataDirectory.substring( leftParen + 1, rightParen)); |
| 109 | offset = rightParen + 1; |
| 110 | while( offset < dataDirectory.length() & Character.isSpaceChar( dataDirectory.charAt( offset))) |
| 111 | offset ++; |
| 112 | dataDirectory = dataDirectory.substring( offset, dataDirectory.length()); |
| 113 | } |
| 114 | else |
| 115 | { |
| 116 | jarFile = getJarFile( dataDirectory); |
| 117 | dataDirectory = ""; |
| 118 | } |
| 119 | zipData = new ZipFile( jarFile); |
| 120 | canonicalName = "(" + jarFile.getCanonicalPath() + ")" + dataDirectory; |
| 121 | separatedDataDirectory = dataDirectory + '/'; // Zip files use '/' as a separator |
| 122 | createTempDir(); |
| 123 | } // end of doInit |
| 124 | |
| 125 | private File getJarFile( String name) |
| 126 | { |
| 127 | File jarFile = new File( name); |
| 128 | if( home != null && !jarFile.isAbsolute()) |
| 129 | jarFile = new File( home, name); |
| 130 | return jarFile; |
| 131 | } // end of getJarFile |
| 132 | } |