Package com.e1c.g5.v8.fastzip

Class FzipIOFactory

java.lang.Object

com.e1c.g5.v8.fastzip.FzipIOFactory

public class FzipIOFactory
extends Object

A factory for obtaining FastZIP readers and writers with specific properties.

See Also:

• com.e1c.g5.v8.fastzip

Constructor Summary

Constructors

Constructor	Description
FzipIOFactory(boolean mmapped, int numThreads)	Constructs a new factory with default chunk size.
FzipIOFactory(boolean mmapped, int numThreads, int chunkSize)	Constructs a new factory.

Method Summary

Modifier and Type	Method	Description
IFzipReader	openReader(Path archPath, IFzipEntryRegistry registry)	Creates a new FastZIP reader.
IFzipWriter	openWriter(Path archPath, IFzipEntryRegistry registry)	Creates a new FastZIP writer.

Methods inherited from class java.lang.Object

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

Constructor Details

FzipIOFactory

public FzipIOFactory(boolean mmapped,
 int numThreads,
 int chunkSize)

Constructs a new factory.

Parameters:

mmapped - whether memory mapped IO shall be used to write and read archives

numThreads - number of threads to be used for compression and decompression, must be positive

chunkSize - size of archive chunk in bytes, must be positive, values less than 4K are strongly discouraged

Throws:

IllegalArgumentException - if argument constraints are not satisfied

FzipIOFactory

public FzipIOFactory(boolean mmapped,
 int numThreads)

Constructs a new factory with default chunk size.

Parameters:

mmapped - whether memory mapped IO shall be used to write and read archives

numThreads - number of threads to be used for compression and decompression, must be positive

Throws:

IllegalArgumentException - if argument constraints are not satisfied

Method Details

openReader

public IFzipReader openReader(Path archPath,
 IFzipEntryRegistry registry)
                       throws IOException

Creates a new FastZIP reader.

The file archPath is required to exist and be a FastZIP archive, created with a compatible registry.

The returned implementation is not thread-safe.

Parameters:

archPath - the path to the archive, cannot be null

registry - the FastZIP entry registry, cannot be null

Returns:

the reader, never null

Throws:

IOException - if an IO error occurs

openWriter

public IFzipWriter openWriter(Path archPath,
 IFzipEntryRegistry registry)
                       throws IOException

Creates a new FastZIP writer.

If the file archPath already exists, it will be overwritten.

The returned implementation is not thread-safe.

Parameters:

archPath - the path to the archive, cannot be null

registry - the FastZIP entry registry, cannot be null

Returns:

the writer, never null

Throws:

IOException - if an IO error occurs