IOUtil (Hazelcast Root 3.12.13 API)

java.lang.Object
- com.hazelcast.nio.IOUtil

@PrivateApi
public final class IOUtil
extends Object

Field Summary

Fields
Modifier and Type	Field and Description
`static byte`	`PRIMITIVE_TYPE_BOOLEAN`
`static byte`	`PRIMITIVE_TYPE_BYTE`
`static byte`	`PRIMITIVE_TYPE_DOUBLE`
`static byte`	`PRIMITIVE_TYPE_FLOAT`
`static byte`	`PRIMITIVE_TYPE_INTEGER`
`static byte`	`PRIMITIVE_TYPE_LONG`
`static byte`	`PRIMITIVE_TYPE_SHORT`
`static byte`	`PRIMITIVE_TYPE_UTF`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static void`	`close(Connection conn, String reason)`
`static void`	`close(ServerSocket serverSocket)` Quietly attempts to close a `ServerSocket`, swallowing any exception.
`static void`	`close(Socket socket)` Quietly attempts to close a `Socket`, swallowing any exception.
`static void`	`closeResource(Closeable closeable)` Quietly attempts to close a `Closeable` resource, swallowing any exception.
`static void`	`compactOrClear(ByteBuffer bb)` Compacts or clears the buffer depending if bytes are remaining in the byte-buffer.
`static byte[]`	`compress(byte[] input)`
`static void`	`copy(File source, File target)` Deep copies source to target and creates the target if necessary.
`static void`	`copy(InputStream source, File target)` Deep copies source to target.
`static void`	`copyFile(File source, File target, long sourceCount)` Copies source file to target and creates the target if necessary.
`static int`	`copyToHeapBuffer(ByteBuffer src, ByteBuffer dst)`
`static byte[]`	`decompress(byte[] compressedData)`
`static void`	`delete(File f)` Ensures that the file described by the supplied parameter does not exist after the method returns.
`static void`	`deleteQuietly(File f)` Ensures that the file described by the supplied parameter does not exist after the method returns.
`static void`	`drainTo(InputStream input, OutputStream output)`
`static File`	`getFileFromResources(String resourceFileName)`
`static InputStream`	`getFileFromResourcesAsStream(String resourceFileName)`
`static String`	`getPath(String... parts)` Concatenates path parts to a single path using the `File.separator` where it applies.
`static ByteBuffer`	`newByteBuffer(int bufferSize, boolean direct)`
`static InputStream`	`newInputStream(ByteBuffer src)`
`static ObjectInputStream`	`newObjectInputStream(ClassLoader classLoader, ClassNameFilter classFilter, InputStream in)`
`static OutputStream`	`newOutputStream(ByteBuffer dst)`
`static Object`	`readAttributeValue(ObjectDataInput in)`
`static byte[]`	`readByteArray(ObjectDataInput in)`
`static void`	`readFully(InputStream in, byte[] buffer)` Fills a buffer from an `InputStream`.
`static boolean`	`readFullyOrNothing(InputStream in, byte[] buffer)` Fills a buffer from an `InputStream`.
`static <T> T`	`readObject(ObjectDataInput in)`
`static void`	`rename(File fileNow, File fileToBe)` Ensures that the file described by `fileNow` is renamed to file described by `fileToBe`.
`static void`	`setChannelOptions(Channel channel, EndpointConfig config)` Sets configured channel options on given `Channel`.
`static byte[]`	`toByteArray(InputStream is)`
`static String`	`toDebugString(String name, ByteBuffer byteBuffer)` Creates a debug String for te given ByteBuffer.
`static String`	`toFileName(String name)`
`static void`	`touch(File file)` Simulates a Linux `touch` command, by setting the last modified time of given file.
`static void`	`writeAttributeValue(Object value, ObjectDataOutput out)`
`static void`	`writeByteArray(ObjectDataOutput out, byte[] value)`
`static void`	`writeObject(ObjectDataOutput out, Object object)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - PRIMITIVE_TYPE_BOOLEAN
```
public static final byte PRIMITIVE_TYPE_BOOLEAN
```
    See Also:
    
    Constant Field Values
  - PRIMITIVE_TYPE_BYTE
```
public static final byte PRIMITIVE_TYPE_BYTE
```
    See Also:
    
    Constant Field Values
  - PRIMITIVE_TYPE_SHORT
```
public static final byte PRIMITIVE_TYPE_SHORT
```
    See Also:
    
    Constant Field Values
  - PRIMITIVE_TYPE_INTEGER
```
public static final byte PRIMITIVE_TYPE_INTEGER
```
    See Also:
    
    Constant Field Values
  - PRIMITIVE_TYPE_LONG
```
public static final byte PRIMITIVE_TYPE_LONG
```
    See Also:
    
    Constant Field Values
  - PRIMITIVE_TYPE_FLOAT
```
public static final byte PRIMITIVE_TYPE_FLOAT
```
    See Also:
    
    Constant Field Values
  - PRIMITIVE_TYPE_DOUBLE
```
public static final byte PRIMITIVE_TYPE_DOUBLE
```
    See Also:
    
    Constant Field Values
  - PRIMITIVE_TYPE_UTF
```
public static final byte PRIMITIVE_TYPE_UTF
```
    See Also:
    
    Constant Field Values
- Method Detail
  - compactOrClear
```
public static void compactOrClear(ByteBuffer bb)
```
    Compacts or clears the buffer depending if bytes are remaining in the byte-buffer.
    
    Parameters:
    
    bb - the ByteBuffer
  - newByteBuffer
```
public static ByteBuffer newByteBuffer(int bufferSize,
                                       boolean direct)
```
  - writeByteArray
```
public static void writeByteArray(ObjectDataOutput out,
                                  byte[] value)
                           throws IOException
```
    Throws:
    
    IOException
  - readByteArray
```
public static byte[] readByteArray(ObjectDataInput in)
                            throws IOException
```
    Throws:
    
    IOException
  - writeObject
```
public static void writeObject(ObjectDataOutput out,
                               Object object)
                        throws IOException
```
    Throws:
    
    IOException
  - readObject
```
public static <T> T readObject(ObjectDataInput in)
                        throws IOException
```
    Throws:
    
    IOException
  - readFullyOrNothing
```
public static boolean readFullyOrNothing(InputStream in,
                                         byte[] buffer)
                                  throws IOException
```
    Fills a buffer from an InputStream. If it doesn't contain any more data, returns false. If it contains some data, but not enough to fill the buffer, EOFException is thrown.
    
    Parameters:
    
    in - the InputStream to read from
    
    buffer - the buffer to fill
    
    Returns:
    
    true if the buffer was filled completely, false if there was no data in the InputStream
    
    Throws:
    
    EOFException - if there was some, but not enough, data in the InputStream to fill the buffer
    
    IOException
  - readFully
```
public static void readFully(InputStream in,
                             byte[] buffer)
                      throws IOException
```
    Fills a buffer from an InputStream.
    
    Parameters:
    
    in - the InputStream to read from
    
    buffer - the buffer to fill
    
    Throws:
    
    EOFException - if there was not enough data in the InputStream to fill the buffer
    
    IOException
  - newObjectInputStream
```
public static ObjectInputStream newObjectInputStream(ClassLoader classLoader,
                                                     ClassNameFilter classFilter,
                                                     InputStream in)
                                              throws IOException
```
    Throws:
    
    IOException
  - newOutputStream
```
public static OutputStream newOutputStream(ByteBuffer dst)
```
  - newInputStream
```
public static InputStream newInputStream(ByteBuffer src)
```
  - copyToHeapBuffer
```
public static int copyToHeapBuffer(ByteBuffer src,
                                   ByteBuffer dst)
```
  - compress
```
public static byte[] compress(byte[] input)
```
  - decompress
```
public static byte[] decompress(byte[] compressedData)
```
  - writeAttributeValue
```
public static void writeAttributeValue(Object value,
                                       ObjectDataOutput out)
                                throws IOException
```
    Throws:
    
    IOException
  - readAttributeValue
```
public static Object readAttributeValue(ObjectDataInput in)
                                 throws IOException
```
    Throws:
    
    IOException
  - closeResource
```
public static void closeResource(Closeable closeable)
```
    Quietly attempts to close a Closeable resource, swallowing any exception.
    
    Parameters:
    
    closeable - the resource to close. If null, no action is taken.
  - close
```
public static void close(Connection conn,
                         String reason)
```
  - close
```
public static void close(ServerSocket serverSocket)
```
    Quietly attempts to close a ServerSocket, swallowing any exception.
    
    Parameters:
    
    serverSocket - server socket to close. If null, no action is taken.
  - close
```
public static void close(Socket socket)
```
    Quietly attempts to close a Socket, swallowing any exception.
    
    Parameters:
    
    socket - socket to close. If null, no action is taken.
  - deleteQuietly
```
public static void deleteQuietly(File f)
```
    Ensures that the file described by the supplied parameter does not exist after the method returns. If the file didn't exist, returns silently. If the file could not be deleted, returns silently. If the file is a directory, its children are recursively deleted.
  - delete
```
public static void delete(File f)
```
    Ensures that the file described by the supplied parameter does not exist after the method returns. If the file didn't exist, returns silently. If the file could not be deleted, fails with an exception. If the file is a directory, its children are recursively deleted.
  - rename
```
public static void rename(File fileNow,
                          File fileToBe)
```
    Ensures that the file described by fileNow is renamed to file described by fileToBe. First attempts to perform a direct, atomic rename; if that fails, checks whether the target exists, deletes it, and retries. Throws an exception in each case where the rename failed.
    
    Parameters:
    
    fileNow - describes an existing file
    
    fileToBe - describes the desired pathname for the file
  - toFileName
```
public static String toFileName(String name)
```
  - getPath
```
public static String getPath(String... parts)
```
    Concatenates path parts to a single path using the File.separator where it applies. There is no validation done on the newly formed path.
    
    Parameters:
    
    parts - The path parts that together should form a path
    
    Returns:
    
    The path formed using the parts
    
    Throws:
    
    IllegalArgumentException - if the parts param is null or empty
  - getFileFromResources
```
public static File getFileFromResources(String resourceFileName)
```
  - getFileFromResourcesAsStream
```
public static InputStream getFileFromResourcesAsStream(String resourceFileName)
```
  - touch
```
public static void touch(File file)
```
    Simulates a Linux touch command, by setting the last modified time of given file.
    
    Parameters:
    
    file - the file to touch
  - copy
```
public static void copy(File source,
                        File target)
```
    Deep copies source to target and creates the target if necessary.
    The source can be a directory or a file and the target can be a directory or file.
    If the source is a directory, it expects that the target is a directory (or that it doesn't exist) and nests the copied source under the target directory.
    
    Parameters:
    
    source - the source
    
    target - the destination
    
    Throws:
    
    IllegalArgumentException - if the source was not found or the source is a directory and the target is a file
    
    HazelcastException - if there was any exception while creating directories or copying
  - copy
```
public static void copy(InputStream source,
                        File target)
```
    Deep copies source to target. If target doesn't exist, this will fail with HazelcastException.
    The source is only accessed here, but not managed. It's the responsibility of the caller to release any resources hold by the source.
    
    Parameters:
    
    source - the source
    
    target - the destination
    
    Throws:
    
    HazelcastException - if the target doesn't exist
  - copyFile
```
public static void copyFile(File source,
                            File target,
                            long sourceCount)
```
    Copies source file to target and creates the target if necessary. The target can be a directory or file. If the target is a file, nests the new file under the target directory, otherwise copies to the given target.
    
    Parameters:
    
    source - the source file
    
    target - the destination file or directory
    
    sourceCount - the maximum number of bytes to be transferred (if negative transfers the entire source file)
    
    Throws:
    
    IllegalArgumentException - if the source was not found or the source not a file
    
    HazelcastException - if there was any exception while creating directories or copying
  - toByteArray
```
public static byte[] toByteArray(InputStream is)
                          throws IOException
```
    Throws:
    
    IOException
  - drainTo
```
public static void drainTo(InputStream input,
                           OutputStream output)
                    throws IOException
```
    Throws:
    
    IOException
  - toDebugString
```
public static String toDebugString(String name,
                                   ByteBuffer byteBuffer)
```
    Creates a debug String for te given ByteBuffer. Useful when debugging IO.
    Do not remove even if this method isn't used.
    
    Parameters:
    
    name - name of the ByteBuffer.
    
    byteBuffer - the ByteBuffer
    
    Returns:
    
    the debug String
  - setChannelOptions
```
public static void setChannelOptions(Channel channel,
                                     EndpointConfig config)
```
    Sets configured channel options on given Channel.
    
    Parameters:
    
    channel - the Channel on which options will be set
    
    config - the endpoint configuration

Class IOUtil

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

PRIMITIVE_TYPE_BOOLEAN

PRIMITIVE_TYPE_BYTE

PRIMITIVE_TYPE_SHORT

PRIMITIVE_TYPE_INTEGER

PRIMITIVE_TYPE_LONG

PRIMITIVE_TYPE_FLOAT

PRIMITIVE_TYPE_DOUBLE

PRIMITIVE_TYPE_UTF

Method Detail

compactOrClear

newByteBuffer

writeByteArray

readByteArray

writeObject

readObject

readFullyOrNothing

readFully

newObjectInputStream

newOutputStream

newInputStream

copyToHeapBuffer

compress

decompress

writeAttributeValue

readAttributeValue

closeResource

close

close

close

deleteQuietly

delete

rename

toFileName

getPath

getFileFromResources

getFileFromResourcesAsStream

touch

copy

copy

copyFile

toByteArray

drainTo

toDebugString

setChannelOptions