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java.lang.Object org.apache.wicket.util.upload.DiskFileItemFactory
public class DiskFileItemFactory
The default FileItemFactory
implementation. This
implementation creates FileItem
instances which keep their
content either in memory, for smaller items, or in a temporary file on disk, for larger items.
The size threshold, above which content will be stored on disk, is configurable, as is the
directory in which temporary files will be created.
If not otherwise configured, the default configuration values are as follows:
System.getProperty("java.io.tmpdir")
.
When using the DiskFileItemFactory
, then you should consider the following:
Temporary files are automatically deleted as soon as they are no longer needed. (More precisely,
when the corresponding instance of File
is garbage collected.) Cleaning up those
files is done by an instance of FileCleaningTracker
, and an associated thread. In a
complex environment, for example in a web application, you should consider terminating this
thread, for example, when your web application ends. See the section on "Resource cleanup" in the
users guide of commons-fileupload.
Field Summary | |
---|---|
static int |
DEFAULT_SIZE_THRESHOLD
The default threshold above which uploads will be stored on disk. |
Constructor Summary | |
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DiskFileItemFactory()
Constructs an unconfigured instance of this class. |
|
DiskFileItemFactory(int sizeThreshold,
File repository)
Constructs a preconfigured instance of this class. |
Method Summary | |
---|---|
FileItem |
createItem(String fieldName,
String contentType,
boolean isFormField,
String fileName)
Create a new DiskFileItem instance from the
supplied parameters and the local factory configuration. |
File |
getRepository()
Returns the directory used to temporarily store files that are larger than the configured size threshold. |
int |
getSizeThreshold()
Returns the size threshold beyond which files are written directly to disk. |
void |
setRepository(File repository)
Sets the directory used to temporarily store files that are larger than the configured size threshold. |
void |
setSizeThreshold(int sizeThreshold)
Sets the size threshold beyond which files are written directly to disk. |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static final int DEFAULT_SIZE_THRESHOLD
Constructor Detail |
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public DiskFileItemFactory()
public DiskFileItemFactory(int sizeThreshold, File repository)
sizeThreshold
- The threshold, in bytes, below which items will be retained in memory and above
which they will be stored as a file.repository
- The data repository, which is the directory in which files will be created, should
the item size exceed the threshold.Method Detail |
---|
public File getRepository()
setRepository(java.io.File)
public void setRepository(File repository)
repository
- The directory in which temporary files will be located.getRepository()
public int getSizeThreshold()
setSizeThreshold(int)
public void setSizeThreshold(int sizeThreshold)
sizeThreshold
- The size threshold, in bytes.getSizeThreshold()
public FileItem createItem(String fieldName, String contentType, boolean isFormField, String fileName)
DiskFileItem
instance from the
supplied parameters and the local factory configuration.
createItem
in interface FileItemFactory
fieldName
- The name of the form field.contentType
- The content type of the form field.isFormField
- true
if this is a plain form field; false
otherwise.fileName
- The name of the uploaded file, if any, as supplied by the browser or other client.
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