Package org.apache.poi.util

Class DefaultTempFileCreationStrategy

java.lang.Object

org.apache.poi.util.DefaultTempFileCreationStrategy

All Implemented Interfaces:

TempFileCreationStrategy

public class DefaultTempFileCreationStrategy
extends Object
implements TempFileCreationStrategy

Default implementation of the TempFileCreationStrategy used by TempFile: Files are collected into one directory and by default are deleted on exit from the VM. Files may be manually deleted by user prior to JVM exit. Files can be kept by defining the system property DELETE_FILES_ON_EXIT. Each file is registered for deletion with the JVM and the temporary directory is not deleted after the JVM exits. Files that are created in the poifiles directory outside the control of DefaultTempFileCreationStrategy are not deleted. See TempFileCreationStrategy for better strategies for long-running processes or limited temporary storage.

Field Summary

Fields

Modifier and Type	Field	Description
static String	DELETE_FILES_ON_EXIT	To use files.deleteOnExit after clean JVM exit, set the -Dpoi.delete.tmp.files.on.exit JVM property
static String	POIFILES	Name of POI files directory in temporary directory.

Constructor Summary

Constructors

Constructor	Description
DefaultTempFileCreationStrategy()	Creates the strategy so that it creates the temporary files in the default directory.
DefaultTempFileCreationStrategy(File dir)	Creates the strategy allowing to set the

Method Summary

Modifier and Type	Method	Description
File	createTempDirectory(String prefix)	Creates a new and empty temporary directory.
File	createTempFile(String prefix, String suffix)	Creates a new and empty temporary file.

Methods inherited from class java.lang.Object

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

Field Detail

POIFILES

public static final String POIFILES

Name of POI files directory in temporary directory.

See Also:

Constant Field Values

DELETE_FILES_ON_EXIT

public static final String DELETE_FILES_ON_EXIT

To use files.deleteOnExit after clean JVM exit, set the -Dpoi.delete.tmp.files.on.exit JVM property

See Also:

Constant Field Values

Constructor Detail

DefaultTempFileCreationStrategy

public DefaultTempFileCreationStrategy()

Creates the strategy so that it creates the temporary files in the default directory.

See Also:

File.createTempFile(String, String)

DefaultTempFileCreationStrategy

public DefaultTempFileCreationStrategy(File dir)

Creates the strategy allowing to set the

Parameters:

dir - The directory where the temporary files will be created (null to use the default directory).

See Also:

Files.createTempFile(Path, String, String, FileAttribute[])

Method Detail

createTempFile

public File createTempFile(String prefix,
                           String suffix)
                    throws IOException

Description copied from interface: TempFileCreationStrategy

Creates a new and empty temporary file.

Specified by:

createTempFile in interface TempFileCreationStrategy

Parameters:

prefix - The prefix to be used to generate the name of the temporary file.

suffix - The suffix to be used to generate the name of the temporary file.

Returns:

The path to the newly created and empty temporary file.

Throws:

IOException - If no temporary file could be created.

createTempDirectory

public File createTempDirectory(String prefix)
                         throws IOException

Description copied from interface: TempFileCreationStrategy

Creates a new and empty temporary directory.

Specified by:

createTempDirectory in interface TempFileCreationStrategy

Parameters:

prefix - The directory name to be used to generate the name of the temporary directory.

Returns:

The path to the newly created and empty temporary directory.

Throws:

IOException - If no temporary directory could be created.