de.phleisch.app.itsucks.io.http.impl
Class HttpFileResumeUrlRetriever

java.lang.Object
  de.phleisch.app.itsucks.io.impl.FilterDataRetriever
      de.phleisch.app.itsucks.io.http.impl.HttpFileResumeUrlRetriever

All Implemented Interfaces:

DataRetriever, ResumeUrlDataRetriever, UrlDataRetriever

public class HttpFileResumeUrlRetriever
extends FilterDataRetriever
implements ResumeUrlDataRetriever

This retriever is used to resume partial downloaded files. It creates an additional retriever, the file retriever, and combine it with the original data retriever. It can send the complete data through the processing chain without receiving it completly from the data retriever.

Author:

olli

Nested Class Summary

protected static class

HttpFileResumeUrlRetriever.OperatingState

Field Summary

protected java.io.File	mLocalFile
protected HttpFileResumeUrlRetriever.OperatingState	mOperatingState
protected long	mResumeOffset
protected UrlDataRetriever	mWrappedUrlDataRetriever

Fields inherited from class de.phleisch.app.itsucks.io.impl.FilterDataRetriever

mDataRetriever

Fields inherited from interface de.phleisch.app.itsucks.io.UrlDataRetriever

RESULT_RETRIEVAL_ABORTED, RESULT_RETRIEVAL_FAILED, RESULT_RETRIEVAL_FAILED_BUT_RETRYABLE, RESULT_RETRIEVAL_NOT_STARTED_YET, RESULT_RETRIEVAL_OK, RESULT_RETRIEVAL_UNKNOWN

Fields inherited from interface de.phleisch.app.itsucks.io.DataRetriever

NOTIFICATION_PROGRESS

Constructor Summary

HttpFileResumeUrlRetriever(UrlDataRetriever pDataRetriever, java.io.File pFile)

Method Summary

void	abort() Aborts the current retrieving.
void	connect() Advise the Retriever to connect to the data source.
void	disconnect() Disconnect from the data source.
protected void	doDelgateDownload()
protected void	doReadOnlyFile(long bytesOnDisk)
protected void	doResumeDownload(long bytesOnDisk)
HttpMetadata	getMetadata() Returns the metadata of the data source connection.
int	getResultCode() Returns the internal state and result code after connecting.
long	getResumeOffset()
long	getSuggestedTimeToWaitForRetry() Returns the suggested time to wait befory retry the retrieval in ms.
java.net.URL	getUrl() Returns the URL which is retrieved.
boolean	isConnected() Returns true if the retriever is connected.
void	setUrl(java.net.URL pUrl) Sets the URL to be retrieved.

Methods inherited from class de.phleisch.app.itsucks.io.impl.FilterDataRetriever

getBytesSkipped, getContentLenght, getDataAsInputStream, isDataAvailable, setBytesToSkip

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface de.phleisch.app.itsucks.io.DataRetriever

getBytesSkipped, getContentLenght, getDataAsInputStream, isDataAvailable, setBytesToSkip

Field Detail

mWrappedUrlDataRetriever

protected UrlDataRetriever mWrappedUrlDataRetriever

mLocalFile

protected java.io.File mLocalFile

mOperatingState

protected HttpFileResumeUrlRetriever.OperatingState mOperatingState

mResumeOffset

protected long mResumeOffset

Constructor Detail

HttpFileResumeUrlRetriever

public HttpFileResumeUrlRetriever(UrlDataRetriever pDataRetriever,
                                  java.io.File pFile)

Method Detail

connect

public void connect()
             throws java.io.IOException

Description copied from interface: DataRetriever

Advise the Retriever to connect to the data source.

Specified by:

connect in interface DataRetriever

Overrides:

connect in class FilterDataRetriever

Throws:

java.io.IOException

doResumeDownload

protected void doResumeDownload(long bytesOnDisk)
                         throws java.io.IOException

Throws:

java.io.IOException

doReadOnlyFile

protected void doReadOnlyFile(long bytesOnDisk)
                       throws java.io.IOException

Throws:

java.io.IOException

doDelgateDownload

protected void doDelgateDownload()
                          throws java.io.IOException

Throws:

java.io.IOException

disconnect

public void disconnect()
                throws java.io.IOException

Description copied from interface: DataRetriever

Disconnect from the data source.

Specified by:

disconnect in interface DataRetriever

Overrides:

disconnect in class FilterDataRetriever

Throws:

java.io.IOException

abort

public void abort()

Description copied from interface: DataRetriever

Aborts the current retrieving.

Specified by:

abort in interface DataRetriever

Overrides:

abort in class FilterDataRetriever

getResumeOffset

public long getResumeOffset()

Specified by:

getResumeOffset in interface ResumeUrlDataRetriever

getResultCode

public int getResultCode()

Description copied from interface: UrlDataRetriever

Returns the internal state and result code after connecting. Check RESULT_RETRIEVAL_* constants for possible values.

Specified by:

getResultCode in interface UrlDataRetriever

Returns:

getSuggestedTimeToWaitForRetry

public long getSuggestedTimeToWaitForRetry()

Description copied from interface: UrlDataRetriever

Returns the suggested time to wait befory retry the retrieval in ms.

Specified by:

getSuggestedTimeToWaitForRetry in interface UrlDataRetriever

Returns:

getUrl

public java.net.URL getUrl()

Description copied from interface: UrlDataRetriever

Returns the URL which is retrieved.

Specified by:

getUrl in interface UrlDataRetriever

Returns:

setUrl

public void setUrl(java.net.URL pUrl)

Description copied from interface: UrlDataRetriever

Sets the URL to be retrieved.

Specified by:

setUrl in interface UrlDataRetriever

getMetadata

public HttpMetadata getMetadata()

Description copied from interface: DataRetriever

Returns the metadata of the data source connection.

Specified by:

getMetadata in interface DataRetriever

Overrides:

getMetadata in class FilterDataRetriever

Returns:

isConnected

public boolean isConnected()
                    throws java.io.IOException

Description copied from interface: DataRetriever

Returns true if the retriever is connected.

Specified by:

isConnected in interface DataRetriever

Throws:

java.io.IOException