cms/org.argeo.slc.support/src/org/argeo/slc/vfs/VfsResource.java

   1 package org.argeo.slc.vfs;
   2
   3 import java.io.File;
   4 import java.io.IOException;
   5 import java.io.InputStream;
   6 import java.net.URI;
   7 import java.net.URISyntaxException;
   8 import java.net.URL;
   9
  10 import org.apache.commons.io.IOExceptionWithCause;
  11 import org.apache.commons.vfs2.FileObject;
  12 import org.apache.commons.vfs2.FileSystemException;
  13 import org.apache.commons.vfs2.NameScope;
  14 import org.argeo.slc.SlcException;
  15 import org.springframework.core.io.Resource;
  16
  17 public class VfsResource implements Resource {
  18         private FileObject fileObject;
  19
  20         public VfsResource(FileObject fileObject) {
  21                 this.fileObject = fileObject;
  22         }
  23
  24         public Resource createRelative(String relativePath) throws IOException {
  25                 return new VfsResource(fileObject.resolveFile(relativePath,
  26                                 NameScope.DESCENDENT_OR_SELF));
  27         }
  28
  29         public boolean exists() {
  30                 try {
  31                         return fileObject.exists();
  32                 } catch (FileSystemException e) {
  33                         throw new SlcException("Cannot find out whether " + fileObject
  34                                         + " exists", e);
  35                 }
  36         }
  37
  38         public String getDescription() {
  39                 return "VFS resource " + fileObject;
  40         }
  41
  42         public File getFile() throws IOException {
  43                 throw new IOException("Cannot access " + getDescription()
  44                                 + " as a local file");
  45                 // TODO: access local files
  46                 // if(fileObject instanceof LocalFile){
  47                 // ((LocalFile)fileObject).
  48                 // }
  49                 // return null;
  50         }
  51
  52         public String getFilename() {
  53                 return fileObject.getName().getBaseName();
  54         }
  55
  56         public URI getURI() throws IOException {
  57                 try {
  58                         return new URI(fileObject.getName().getURI());
  59                 } catch (URISyntaxException e) {
  60                         throw new IOExceptionWithCause(e);
  61                 }
  62         }
  63
  64         public URL getURL() throws IOException {
  65                 return fileObject.getURL();
  66         }
  67
  68         public boolean isOpen() {
  69                 return fileObject.isContentOpen();
  70         }
  71
  72         public boolean isReadable() {
  73                 try {
  74                         return fileObject.isReadable();
  75                 } catch (FileSystemException e) {
  76                         throw new SlcException("Cannot find out whether " + fileObject
  77                                         + " is readable", e);
  78                 }
  79         }
  80
  81         public long lastModified() throws IOException {
  82                 return fileObject.getContent().getLastModifiedTime();
  83         }
  84
  85         public InputStream getInputStream() throws IOException {
  86                 return fileObject.getContent().getInputStream();
  87         }
  88
  89         public FileObject getFileObject() {
  90                 return fileObject;
  91         }
  92
  93         public long contentLength(){
  94                 return -1;
  95         }
  96 }