ch.randelshofer.activation
Class URLConnectionRecognizer

java.lang.Object
  ch.randelshofer.activation.URLConnectionRecognizer

All Implemented Interfaces:

Recognizer

public class URLConnectionRecognizer
extends java.lang.Object
implements Recognizer

This content type detector uses java.net.URLConnection#guessContentTypeFromStream() to determine the type of data.

Version:

1.1 2002-02-12 Return 'application/octet-stream' when file type can not be determined.
1.0 1999-10-19

Author:

Werner Randelshofer, Hausmatt 10, CH-6405 Immensee, Switzerland.

Field Summary

Fields inherited from interface ch.randelshofer.activation.Recognizer

CONTENT_TYPE_OCTET_STREAM, CONTENT_TYPE_UNKNOWN

Constructor Summary

URLConnectionRecognizer()

Method Summary

java.lang.String	getContentType(byte[] dataSnippet) Return the base MIME Type of this data.
int	getMinimalDeterminableDataLength() Return the number of bytes needed to determine the content type.

Methods inherited from class java.lang.Object

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

Constructor Detail

URLConnectionRecognizer

public URLConnectionRecognizer()

Method Detail

getMinimalDeterminableDataLength

public int getMinimalDeterminableDataLength()

Return the number of bytes needed to determine the content type.

Specified by:

getMinimalDeterminableDataLength in interface Recognizer

getContentType

public java.lang.String getContentType(byte[] dataSnippet)

Return the base MIME Type of this data. This method is expected to ALWAYS return a valid (non-null) MIME Type.

Specified by:

getContentType in interface Recognizer

Parameters:

dataSnippet - the first few bytes of the data file.

Returns:

MIME Type or 'content/unknown' if content type can not be determined.