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package fr.paris.lutece.plugins.blobstore.service; |
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import net.sf.json.JSONException; |
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import net.sf.json.JSONObject; |
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import org.apache.commons.fileupload.FileItem; |
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import org.apache.log4j.Logger; |
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import java.io.File; |
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import java.io.IOException; |
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import java.io.InputStream; |
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import java.io.OutputStream; |
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import java.io.UnsupportedEncodingException; |
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public class BlobStoreFileItem implements FileItem |
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{ |
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public static final String JSON_KEY_FILE_SIZE = "fileSize"; |
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public static final String JSON_KEY_FILE_NAME = "fileName"; |
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public static final String JSON_KEY_FILE_CONTENT_TYPE = "fileContentType"; |
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public static final String JSON_KEY_FILE_BLOB_ID = "fileBlobId"; |
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public static final String JSON_KEY_FILE_METADATA_BLOB_ID = "fileMetadata"; |
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private static final long serialVersionUID = 1L; |
68 | 0 | private static Logger _logger = Logger.getLogger( "lutece.blobstore" ); |
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private final IBlobStoreService _blobstoreService; |
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private final String _strBlobId; |
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private String _strFileName; |
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private long _lFileSize; |
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private String _strFileBlobId; |
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private String _strContentType; |
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public BlobStoreFileItem( String strBlobId, IBlobStoreService blobstoreService ) |
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throws NoSuchBlobException |
86 | 0 | { |
87 | 0 | _strBlobId = strBlobId; |
88 | 0 | _blobstoreService = blobstoreService; |
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|
91 | 0 | byte[] blob = _blobstoreService.getBlob( _strBlobId ); |
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93 | 0 | if ( blob == null ) |
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{ |
95 | 0 | throw new NoSuchBlobException( "No blob found for id " + strBlobId ); |
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} |
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98 | 0 | JSONObject jsonObject = parseBlob( blob ); |
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100 | 0 | if ( jsonObject != null ) |
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{ |
102 | 0 | String strSize = (String) jsonObject.get( JSON_KEY_FILE_SIZE ); |
103 | 0 | _lFileSize = Long.parseLong( strSize ); |
104 | 0 | _strFileName = (String) jsonObject.get( JSON_KEY_FILE_NAME ); |
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106 | 0 | _strFileBlobId = (String) jsonObject.get( JSON_KEY_FILE_BLOB_ID ); |
107 | 0 | _strContentType = jsonObject.getString( JSON_KEY_FILE_CONTENT_TYPE ); |
108 | 0 | } |
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else |
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{ |
111 | 0 | throw new NoSuchBlobException( strBlobId ); |
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} |
113 | 0 | } |
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public String getBlobId( ) |
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{ |
121 | 0 | return _strBlobId; |
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} |
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public String getFileBlobId( ) |
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{ |
130 | 0 | return _strFileBlobId; |
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} |
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@Override |
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public void delete( ) |
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{ |
139 | 0 | _blobstoreService.delete( _strFileBlobId ); |
140 | 0 | _blobstoreService.delete( _strBlobId ); |
141 | 0 | } |
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@Override |
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public byte[] get( ) |
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{ |
149 | 0 | return _blobstoreService.getBlob( _strFileBlobId ); |
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} |
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@Override |
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public String getContentType( ) |
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{ |
158 | 0 | return _strContentType; |
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} |
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@Override |
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public String getFieldName( ) |
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{ |
168 | 0 | return null; |
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} |
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@Override |
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public InputStream getInputStream( ) throws IOException |
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{ |
178 | 0 | return _blobstoreService.getBlobInputStream( _strFileBlobId ); |
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} |
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@Override |
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public String getName( ) |
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{ |
187 | 0 | return _strFileName; |
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} |
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@Override |
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public OutputStream getOutputStream( ) throws IOException |
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{ |
198 | 0 | throw new UnsupportedOperationException( ); |
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} |
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@Override |
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public long getSize( ) |
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{ |
207 | 0 | return _lFileSize; |
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} |
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@Override |
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public String getString( ) |
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{ |
216 | 0 | return new String( get( ) ); |
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} |
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@Override |
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public String getString( String encoding ) throws UnsupportedEncodingException |
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{ |
225 | 0 | return new String( get( ), encoding ); |
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} |
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@Override |
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public boolean isFormField( ) |
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{ |
235 | 0 | return false; |
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} |
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@Override |
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public boolean isInMemory( ) |
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{ |
245 | 0 | return false; |
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} |
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@Override |
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public void setFieldName( String name ) |
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{ |
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256 | 0 | } |
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@Override |
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public void setFormField( boolean state ) |
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{ |
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266 | 0 | } |
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@Override |
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public void write( File file ) throws Exception |
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{ |
276 | 0 | throw new UnsupportedOperationException( ); |
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} |
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@Override |
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public String toString( ) |
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{ |
285 | 0 | return "BlobId:" + _strBlobId + " FileBlobId:" + _strFileBlobId + " FileName:" + _strFileName; |
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} |
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private static JSONObject parseBlob( byte[] blob ) |
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{ |
296 | 0 | if ( blob == null ) |
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{ |
298 | 0 | return null; |
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} |
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try |
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{ |
303 | 0 | return JSONObject.fromObject( new String( blob ) ); |
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} |
305 | 0 | catch ( JSONException je ) |
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{ |
307 | 0 | _logger.error( je.getMessage( ), je ); |
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} |
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310 | 0 | return null; |
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} |
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public static final String buildFileMetadata( String strFileName, long lSize, String strFileBlobId, |
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String strContentType ) |
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{ |
324 | 0 | JSONObject json = new JSONObject( ); |
325 | 0 | json.accumulate( BlobStoreFileItem.JSON_KEY_FILE_SIZE, Long.toString( lSize ) ); |
326 | 0 | json.accumulate( BlobStoreFileItem.JSON_KEY_FILE_NAME, strFileName ); |
327 | 0 | json.accumulate( BlobStoreFileItem.JSON_KEY_FILE_BLOB_ID, strFileBlobId ); |
328 | 0 | json.accumulate( BlobStoreFileItem.JSON_KEY_FILE_CONTENT_TYPE, strContentType ); |
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|
330 | 0 | return json.toString( ); |
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} |
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} |