de.must.appletserver

Class DataFileStreamField

java.lang.Object

de.must.appletserver.RemoteElement

de.must.appletserver.MustInputField

de.must.appletserver.MustTextField

de.must.appletserver.FileStreamField

de.must.appletserver.DataFileStreamField

All Implemented Interfaces:

ActionInterpreter, AppletTalker, FileStreamTransfer, Remotable, RemoteContent, Storable, Exemptible, ExemptibleManager

public class DataFileStreamField
extends FileStreamField
implements Storable, FileStreamTransfer

A database connected area for integrating files into database and opening these files.

Field Summary

Fields inherited from class de.must.appletserver.FileStreamField

filesToDelete, uploadPendingFiles

Fields inherited from class de.must.appletserver.MustTextField

additionalTagFragments, capitalization, className, contentChangeListener, controlLength, enterAction, maxColumns, maxlength, registerFlag, required, size

Fields inherited from class de.must.appletserver.RemoteElement

context, editable, enabled, lastEditability, lastVisibility, name, nonstandardPanel, nonstandardPosition, sessionData, toolTipText, visible

Constructor Summary

Constructors

Constructor and Description
DataFileStreamField(SessionData sessionData, DataObject assignedDataObject, DataObject fileDataObject, java.lang.String columnNameForFileName, java.lang.String columnNameForFileDate, java.lang.String columnNameForBinaryData)

Method Summary

Modifier and Type	Method and Description
java.lang.String	createTempFile(GeneralizedRequest request)
void	free() Releases external resources.
DataObject	getAssignedDataObject()
boolean	isContentValid()
boolean	isToSave()
void	loadValue() Loads the component's database stored value.
void	receiveFrom(GeneralizedRequest request) Receives information from request for further specification what to provide.
void	saveValue() Stores the component's value.
void	writeToResponseOutputStream(GeneralizedRequest request, HttpServletResponse response) Writes the stream to the response output stream.

Methods inherited from class de.must.appletserver.FileStreamField

buildRemoteView, fetchValuesFromRequest

Methods inherited from class de.must.appletserver.MustTextField

addContentChangeListener, addMoreCreationAspects, getApplication, getCreateTagElement, getText, getTextOrNullIfEmpty, hasFocus, isFilled, isModified, isRequirementUnfulfilled, isValid, perform, setApplication, setCapitalization, setColumns, setEditable, setEnterAction, setOnChoice, setRegisterFlag, setRequired, setText, setTextAsUserInput, setValues

Methods inherited from class de.must.appletserver.MustInputField

destroy

Methods inherited from class de.must.appletserver.RemoteElement

beginAction, endAction, getContext, getName, getTranslation, isEnabled, isVisible, register, requestFocusInWindow, resetLastStatus, selectAll, setEnabled, setToolTipText, setVisible

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.must.appletserver.Storable

isFilled, isModified, isRequirementUnfulfilled, isValid, setRequired

Methods inherited from interface de.must.appletserver.RemoteContent

requestFocusInWindow, selectAll, setValues

Methods inherited from interface de.must.appletserver.Remotable

destroy, fetchValuesFromRequest, setToolTipText

Methods inherited from interface de.must.appletserver.AppletTalker

buildRemoteView

Methods inherited from interface de.must.appletserver.FileStreamTransfer

getName

Constructor Detail

DataFileStreamField

public DataFileStreamField(SessionData sessionData,
                           DataObject assignedDataObject,
                           DataObject fileDataObject,
                           java.lang.String columnNameForFileName,
                           java.lang.String columnNameForFileDate,
                           java.lang.String columnNameForBinaryData)

Method Detail

getAssignedDataObject

public DataObject getAssignedDataObject()

Specified by:

getAssignedDataObject in interface Storable

loadValue

public void loadValue()

Description copied from interface: Storable

Loads the component's database stored value.

Specified by:

loadValue in interface Storable

isToSave

public boolean isToSave()

isContentValid

public boolean isContentValid()

receiveFrom

public void receiveFrom(GeneralizedRequest request)

Description copied from interface: FileStreamTransfer

Receives information from request for further specification what to provide.

Specified by:

receiveFrom in interface FileStreamTransfer

Parameters:

request - the request starting the stream transfer

writeToResponseOutputStream

public void writeToResponseOutputStream(GeneralizedRequest request,
                                        HttpServletResponse response)

Description copied from interface: FileStreamTransfer

Writes the stream to the response output stream.

Specified by:

writeToResponseOutputStream in interface FileStreamTransfer

Parameters:

request - the request starting the stream transfer

response - the servlet response to which the stream is to write to

createTempFile

public java.lang.String createTempFile(GeneralizedRequest request)

saveValue

public void saveValue()

Description copied from interface: Storable

Stores the component's value.

Specified by:

saveValue in interface Storable

free

public void free()

Description copied from interface: ExemptibleManager

Releases external resources. May be called manually without waiting for garbage collection to occur.

Specified by:

free in interface Exemptible

Specified by:

free in interface ExemptibleManager

Overrides:

free in class RemoteElement