Java StoredObject.getContentLength方法代码示例

import org.javaswift.joss.model.StoredObject; //导入方法依赖的package包/类
/**
 * The get function will first search for the object in the cache.
 * If not found will issue a HEAD request for the object metadata
 * and add the object to the cache.
 *
 * @param objName object name
 * @return cached entry of the object
 * @throws IOException if failed to parse time stamp
 */
public SwiftCachedObject get(String objName) throws IOException {
  LOG.trace("Get from cache  {} ", objName);
  SwiftCachedObject res = cache.get(objName);
  if (res == null) {
    LOG.trace("Cache get:  {} is not in the cache. Access Swift to get content length", objName);
    StoredObject rawObj = container.getObject(removeTrailingSlash(objName));
    if (rawObj != null && rawObj.exists()) {
      res = new SwiftCachedObject(rawObj.getContentLength(),
        Utils.lastModifiedAsLong(rawObj.getLastModified()));
      put(objName, res);
    } else {
      return null;
    }
  }
  return res;
}
 

import org.javaswift.joss.model.StoredObject; //导入方法依赖的package包/类
public RemoteItem (StoredObject storedObject) throws IOException
{
	super () ;
	if (storedObject == null)
		throw new IllegalArgumentException ("storedObject cannot be null") ;
	this.storedObject = storedObject ;
	this.exists = storedObject.exists() ;
	this.size = (exists) ? (storedObject.getContentLength()) : (-2) ;
	if (exists)
	{
		// For segmented object, the etag may be bounded by "".
		String etag = storedObject.getEtag()  ;
		if (etag.startsWith("\"")) 
			etag = etag.replace("\"", "") ;
		this.md5 = etag ;
	}
	else
		this.md5 = "" ;
}
 

import org.javaswift.joss.model.StoredObject; //导入方法依赖的package包/类
@Override
public long getActualSegmentSize (StoredObject obj)
{
	final long notFound = -1 ;
	Container segCont = getSegmentsContainer (obj, false) ;
	if (segCont == null || !segCont.exists())
		return notFound ;
	StoredObject segObj = getObjectSegment ((AbstractContainer)segCont, (AbstractStoredObject)obj, Long.valueOf(1)) ;
	if (segObj == null || !segObj.exists())
	{
		// the object may have been segmented using another convention,
		// we check using the manifest
 	List<StoredObject> sgl = getSegmentsList(obj, 0, 1) ;
 	if (!sgl.isEmpty())
 		segObj = sgl.get(0) ;
	}
	if (segObj == null || !segObj.exists())
		return notFound ;
	return segObj.getContentLength() ;
}
 

import org.javaswift.joss.model.StoredObject; //导入方法依赖的package包/类
protected void onPreviewStoredObject() {    	

		StoredObject obj = single(getSelectedStoredObjects());
		if (SwiftUtils.isDirectory(obj))
		{
			Container container = getSelectedContainer();
			if (container == null)
				return ;
			loadDirectory (container, obj.getName(), callback) ;	
		}
		else
		{
	        if (obj.getContentLength() < 16 * 1024 * 1024) {
	            previewPanel.preview(obj.getContentType(), obj.downloadObject());
	        }
		}
    }
 

import org.javaswift.joss.model.StoredObject; //导入方法依赖的package包/类
/**
 * Swift has a bug where container listing might wrongly report size 0
 * for large objects. It's seems to be a well known issue in Swift without
 * solution.
 * We have to provide work around for this.
 * If container listing reports size 0 for some object, we send
 * additional HEAD on that object to verify it's size.
 *
 * @param tmp JOSS StoredObject
 * @param cObj JOSS Container object
 */
private void setCorrectSize(StoredObject tmp, Container cObj) {
  long objectSize = tmp.getContentLength();
  if (objectSize == 0) {
    // we may hit a well known Swift bug.
    // container listing reports 0 for large objects.
    StoredObject soDirect = cObj
        .getObject(tmp.getName());
    long contentLength = soDirect.getContentLength();
    if (contentLength > 0) {
      tmp.setContentLength(contentLength);
    }
  }
}
 

import org.javaswift.joss.model.StoredObject; //导入方法依赖的package包/类
/**
 * Maps StoredObject of JOSS into Hadoop FileStatus
 *
 * @param tmp Stored Object
 * @param cObj Container Object
 * @param hostName host name
 * @param path path to the object
 * @return FileStatus representing current object
 * @throws IllegalArgumentException if error
 * @throws IOException if error
 */
private FileStatus createFileStatus(StoredObject tmp, Container cObj,
    String hostName, Path path) throws IllegalArgumentException, IOException {
  String newMergedPath = getMergedPath(hostName, path, tmp.getName());
  return new FileStatus(tmp.getContentLength(), false, 1, blockSize,
      Utils.lastModifiedAsLong(tmp.getLastModified()), 0, null,
      null, null, new Path(newMergedPath));
}