com.ibm.portal.resolver.data
Class FileTypeMap

java.lang.Object
  javax.activation.FileTypeMap
      com.ibm.portal.resolver.data.FileTypeMap

public abstract class FileTypeMap
extends javax.activation.FileTypeMap

Extension to the standard file type map that determines the mime type based on the content

Since:

6.1.0.3

Constructor Summary

FileTypeMap()

Method Summary

abstract java.lang.String	canonicalize(java.lang.String contentType) Canonicalizes the given content type by finding the official IANA mime type for mime type aliases.
abstract java.lang.String	getContentType(byte[] data) Tries to determine the content type from the data array.
abstract java.lang.String	getContentType(byte[] data, int off, int len) Tries to determine the content type from the data array.
abstract java.lang.String	getExtension(java.lang.String contentType) Returns the file extension for the given content type

Methods inherited from class javax.activation.FileTypeMap

getContentType, getContentType, getDefaultFileTypeMap, setDefaultFileTypeMap

Methods inherited from class java.lang.Object

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

Constructor Detail

FileTypeMap

public FileTypeMap()

Method Detail

getExtension

public abstract java.lang.String getExtension(java.lang.String contentType)

Returns the file extension for the given content type

Parameters:

contentType - the content type

Returns:

the file extension

Since:

8.0.0.1

canonicalize

public abstract java.lang.String canonicalize(java.lang.String contentType)

Canonicalizes the given content type by finding the official IANA mime type for mime type aliases. The content type application/x-zip-compressed would e.g. be mapped to the official content type application/zip. If no alias can be found the method returns the input.

Parameters:

contentType - the content type that it potentially an alias, not null

Returns:

the canonicalized content type, not null

getContentType

public abstract java.lang.String getContentType(byte[] data)

Tries to determine the content type from the data array. Returns application/octet-stream as a fallback.

Parameters:

data - the data array, not null

Returns:

the content type, not null

getContentType

public abstract java.lang.String getContentType(byte[] data,
                                                int off,
                                                int len)

Tries to determine the content type from the data array. Returns application/octet-stream as a fallback.

Parameters:

data - the data array, not null

off - index to the first valid byte in the buffer

len - length of the data sequence

Returns:

the content type, not null