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Java Source Code / Java Documentation » Web Crawler » heritrix » org.archive.io 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.archive.io.ArchiveReaderFactory

All known Subclasses:   org.archive.io.warc.v10.WARCReaderFactory,  org.archive.io.arc.ARCReaderFactory,  org.archive.io.warc.WARCReaderFactory,
ArchiveReaderFactory
public class ArchiveReaderFactory implements ArchiveFileConstants(Code)
Factory that returns an Archive file Reader. Returns Readers for ARCs or WARCs.
author:
   stack
version:
   $Date: 2007-03-09 23:57:28 +0000 (Fri, 09 Mar 2007) $ $Revision: 4977 $



Constructor Summary
protected  ArchiveReaderFactory()
     Shutdown any public access to default constructor.

Method Summary
protected  voidaddUserAgent(HttpURLConnection connection)
    
protected  InputStreamasRepositionable(InputStream is)
    
public static  ArchiveReaderget(String arcFileOrUrl)
     Get an Archive file Reader on passed path or url. Does primitive heuristic figuring if path or URL.
Parameters:
  arcFileOrUrl - File path or URL pointing at an Archive file.
public static  ArchiveReaderget(File f)
    
Parameters:
  f - An Archive file to read.
public static  ArchiveReaderget(File f, long offset)
    
Parameters:
  f - An Archive file to read.
Parameters:
  offset - Have returned Reader set to start reading at this offset.
public static  ArchiveReaderget(String s, InputStream is, boolean atFirstRecord)
     Wrap a Reader around passed Stream.
Parameters:
  s - Identifying String for this Stream used in error messages.Must be a string that ends with the name of the file we're to putan ArchiveReader on.
public static  ArchiveReaderget(URL u, long offset)
     Get an Archive Reader aligned at offset. This version of get will not bring the file local but will try to stream across the net making an HTTP 1.1 Range request on remote http server (RFC1435 Section 14.35).
Parameters:
  u - HTTP URL for an Archive file.
Parameters:
  offset - Offset into file at which to start fetching.
public static  ArchiveReaderget(URL u)
     Get an ARCReader. Pulls the ARC local into whereever the System Property java.io.tmpdir points.
protected  ArchiveReadergetArchiveReader(String arcFileOrUrl)
    
protected  ArchiveReadergetArchiveReader(String arcFileOrUrl, long offset)
    
protected  ArchiveReadergetArchiveReader(File f)
    
protected  ArchiveReadergetArchiveReader(File f, long offset)
    
protected  ArchiveReadergetArchiveReader(String id, InputStream is, boolean atFirstRecord)
    
protected  ArchiveReadergetArchiveReader(URL f, long offset)
    
protected  ArchiveReadergetArchiveReader(URL u)
    
protected  booleanisCompressed(File f)
    
Parameters:
  f - File to test.
protected  ArchiveReadermakeARCLocal(URLConnection connection)
    


Constructor Detail
ArchiveReaderFactory
protected ArchiveReaderFactory()(Code)
Shutdown any public access to default constructor.




Method Detail
addUserAgent
protected void addUserAgent(HttpURLConnection connection)(Code)



asRepositionable
protected InputStream asRepositionable(InputStream is)(Code)

Parameters:
  is - If passed is isRepositionableInputStream, returns is, else wewrap is with RepositionableStream.



get
public static ArchiveReader get(String arcFileOrUrl) throws MalformedURLException, IOException(Code)
Get an Archive file Reader on passed path or url. Does primitive heuristic figuring if path or URL.
Parameters:
  arcFileOrUrl - File path or URL pointing at an Archive file. An Archive file Reader.
throws:
  IOException -
throws:
  MalformedURLException -
throws:
  IOException -



get
public static ArchiveReader get(File f) throws IOException(Code)

Parameters:
  f - An Archive file to read. An ArchiveReader
throws:
  IOException -



get
public static ArchiveReader get(File f, long offset) throws IOException(Code)

Parameters:
  f - An Archive file to read.
Parameters:
  offset - Have returned Reader set to start reading at this offset. An ArchiveReader
throws:
  IOException -



get
public static ArchiveReader get(String s, InputStream is, boolean atFirstRecord) throws IOException(Code)
Wrap a Reader around passed Stream.
Parameters:
  s - Identifying String for this Stream used in error messages.Must be a string that ends with the name of the file we're to putan ArchiveReader on. This code looks at file endings to figurewhether to return an ARC or WARC reader.
Parameters:
  is - Stream. Stream will be wrapped with implementation ofRepositionableStream unless already supported.
Parameters:
  atFirstRecord - Are we at first Record? ArchiveReader.
throws:
  IOException -



get
public static ArchiveReader get(URL u, long offset) throws IOException(Code)
Get an Archive Reader aligned at offset. This version of get will not bring the file local but will try to stream across the net making an HTTP 1.1 Range request on remote http server (RFC1435 Section 14.35).
Parameters:
  u - HTTP URL for an Archive file.
Parameters:
  offset - Offset into file at which to start fetching. An ArchiveReader aligned at offset.
throws:
  IOException -



get
public static ArchiveReader get(URL u) throws IOException(Code)
Get an ARCReader. Pulls the ARC local into whereever the System Property java.io.tmpdir points. It then hands back an ARCReader that points at this local copy. A close on this ARCReader instance will remove the local copy.
Parameters:
  u - An URL that points at an ARC. An ARCReader.
throws:
  IOException -



getArchiveReader
protected ArchiveReader getArchiveReader(String arcFileOrUrl) throws MalformedURLException, IOException(Code)



getArchiveReader
protected ArchiveReader getArchiveReader(String arcFileOrUrl, long offset) throws MalformedURLException, IOException(Code)



getArchiveReader
protected ArchiveReader getArchiveReader(File f) throws IOException(Code)



getArchiveReader
protected ArchiveReader getArchiveReader(File f, long offset) throws IOException(Code)



getArchiveReader
protected ArchiveReader getArchiveReader(String id, InputStream is, boolean atFirstRecord) throws IOException(Code)



getArchiveReader
protected ArchiveReader getArchiveReader(URL f, long offset) throws IOException(Code)



getArchiveReader
protected ArchiveReader getArchiveReader(URL u) throws IOException(Code)



isCompressed
protected boolean isCompressed(File f) throws IOException(Code)

Parameters:
  f - File to test. True if f is compressed.
throws:
  IOException -



makeARCLocal
protected ArchiveReader makeARCLocal(URLConnection connection) throws IOException(Code)



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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