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Java 2 Platform EE v1.3: Class ActivationDataFlavor - Java Platform, Enterprise Edition v1.3.1 API Specifications

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javax.activation
Class ActivationDataFlavor

java.lang.Object
  |
  +--java.awt.datatransfer.DataFlavor
        |
        +--javax.activation.ActivationDataFlavor
All Implemented Interfaces:
java.lang.Cloneable, java.io.Externalizable, java.io.Serializable
public class ActivationDataFlavor
extends java.awt.datatransfer.DataFlavor

The ActivationDataFlavor class is a special subclass of java.awt.datatransfer.DataFlavor. It allows the JAF to set all three values stored by the DataFlavor class via a new constructor. It also contains improved MIME parsing in the equals method. Except for the improved parsing, its semantics are identical to that of the JDK's DataFlavor class.

See Also:
Serialized Form

Fields inherited from class java.awt.datatransfer.DataFlavor
javaFileListFlavor, javaJVMLocalObjectMimeType, javaRemoteObjectMimeType, javaSerializedObjectMimeType, plainTextFlavor, stringFlavor
 
Constructor Summary
ActivationDataFlavor(java.lang.Class representationClass, java.lang.String humanPresentableName)
          Construct a DataFlavor that represents a MimeType.
ActivationDataFlavor(java.lang.Class representationClass, java.lang.String mimeType, java.lang.String humanPresentableName)
          Construct a DataFlavor that represents an arbitrary Java object.
ActivationDataFlavor(java.lang.String mimeType, java.lang.String humanPresentableName)
          Construct a DataFlavor that represents a MimeType.
 
Method Summary
 boolean equals(java.awt.datatransfer.DataFlavor dataFlavor)
          Compares the DataFlavor passed in with this DataFlavor; calls the isMimeTypeEqual method.
 java.lang.String getHumanPresentableName()
          Return the Human Presentable name.
 java.lang.String getMimeType()
          Return the MIME type for this DataFlavor.
 java.lang.Class getRepresentationClass()
          Return the representation class.
 boolean isMimeTypeEqual(java.lang.String mimeType)
          Is the string representation of the MIME type passed in equivalent to the MIME type of this DataFlavor.
protected  java.lang.String normalizeMimeType(java.lang.String mimeType)
          Called for each MIME type string to give DataFlavor subtypes the opportunity to change how the normalization of MIME types is accomplished.
protected  java.lang.String normalizeMimeTypeParameter(java.lang.String parameterName, java.lang.String parameterValue)
          Called on DataFlavor for every MIME Type parameter to allow DataFlavor subclasses to handle special parameters like the text/plain charset parameters, whose values are case insensitive.
 void setHumanPresentableName(java.lang.String humanPresentableName)
          Set the human presentable name.
 
Methods inherited from class java.awt.datatransfer.DataFlavor
clone, equals, equals, getDefaultRepresentationClass, getDefaultRepresentationClassAsString, getParameter, getPrimaryType, getReaderForText, getSubType, getTextPlainUnicodeFlavor, hashCode, isFlavorJavaFileListType, isFlavorRemoteObjectType, isFlavorSerializedObjectType, isMimeTypeEqual, isMimeTypeSerializedObject, isRepresentationClassInputStream, isRepresentationClassRemote, isRepresentationClassSerializable, match, readExternal, selectBestTextFlavor, toString, tryToLoadClass, writeExternal
 
Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait
 

Constructor Detail

ActivationDataFlavor

public ActivationDataFlavor(java.lang.Class representationClass,
                            java.lang.String mimeType,
                            java.lang.String humanPresentableName)
Construct a DataFlavor that represents an arbitrary Java object. This constructor is an extension of the JDK's DataFlavor in that it allows the explicit setting of all three DataFlavor attributes.

The returned DataFlavor will have the following characteristics:

representationClass = representationClass
mimeType = mimeType
humanName = humanName

Parameters:
representationClass - the class used in this DataFlavor
mimeType - the MIME type of the data represented by this class
humanPresentableName - the human presentable name of the flavor

ActivationDataFlavor

public ActivationDataFlavor(java.lang.Class representationClass,
                            java.lang.String humanPresentableName)
Construct a DataFlavor that represents a MimeType.

The returned DataFlavor will have the following characteristics:

If the mimeType is "application/x-java-serialized-object; class=", the result is the same as calling new DataFlavor(Class.forName()) as above.

otherwise:

representationClass = InputStream

mimeType = mimeType

Parameters:
representationClass - the class used in this DataFlavor
humanPresentableName - the human presentable name of the flavor

ActivationDataFlavor

public ActivationDataFlavor(java.lang.String mimeType,
                            java.lang.String humanPresentableName)
Construct a DataFlavor that represents a MimeType.

The returned DataFlavor will have the following characteristics:

If the mimeType is "application/x-java-serialized-object; class=", the result is the same as calling new DataFlavor(Class.forName()) as above, otherwise:

representationClass = InputStream

mimeType = mimeType

Parameters:
mimeType - the MIME type of the data represented by this class
humanPresentableName - the human presentable name of the flavor
Method Detail

getMimeType

public java.lang.String getMimeType()
Return the MIME type for this DataFlavor.
Overrides:
getMimeType in class java.awt.datatransfer.DataFlavor
Returns:
the MIME type

getRepresentationClass

public java.lang.Class getRepresentationClass()
Return the representation class.
Overrides:
getRepresentationClass in class java.awt.datatransfer.DataFlavor
Returns:
the representation class

getHumanPresentableName

public java.lang.String getHumanPresentableName()
Return the Human Presentable name.
Overrides:
getHumanPresentableName in class java.awt.datatransfer.DataFlavor
Returns:
the human presentable name

setHumanPresentableName

public void setHumanPresentableName(java.lang.String humanPresentableName)
Set the human presentable name.
Overrides:
setHumanPresentableName in class java.awt.datatransfer.DataFlavor
Parameters:
humanPresentableName - the name to set

equals

public boolean equals(java.awt.datatransfer.DataFlavor dataFlavor)
Compares the DataFlavor passed in with this DataFlavor; calls the isMimeTypeEqual method.
Overrides:
equals in class java.awt.datatransfer.DataFlavor
Parameters:
dataFlavor - the DataFlavor to compare with
Returns:
true if the MIME type and representation class are the same

isMimeTypeEqual

public boolean isMimeTypeEqual(java.lang.String mimeType)
Is the string representation of the MIME type passed in equivalent to the MIME type of this DataFlavor.

ActivationDataFlavor delegates the comparison of MIME types to the MimeType class included as part of the JavaBeans Activation Framework. This provides a more robust comparison than is normally available in the DataFlavor class.

Overrides:
isMimeTypeEqual in class java.awt.datatransfer.DataFlavor
Parameters:
mimeType - the MIME type
Returns:
true if the same MIME type

normalizeMimeTypeParameter

protected java.lang.String normalizeMimeTypeParameter(java.lang.String parameterName,
                                                      java.lang.String parameterValue)
Called on DataFlavor for every MIME Type parameter to allow DataFlavor subclasses to handle special parameters like the text/plain charset parameters, whose values are case insensitive. (MIME type parameter values are supposed to be case sensitive).

This method is called for each parameter name/value pair and should return the normalized representation of the parameterValue.

Overrides:
normalizeMimeTypeParameter in class java.awt.datatransfer.DataFlavor
Parameters:
parameterName - the parameter name
parameterValue - the parameter value
Returns:
the normalized parameter value

normalizeMimeType

protected java.lang.String normalizeMimeType(java.lang.String mimeType)
Called for each MIME type string to give DataFlavor subtypes the opportunity to change how the normalization of MIME types is accomplished. One possible use would be to add default parameter/value pairs in cases where none are present in the MIME type string passed in.
Overrides:
normalizeMimeType in class java.awt.datatransfer.DataFlavor
Parameters:
mimeType - the MIME type
Returns:
the normalized MIME type
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