Package com.mchange.io

Interface IOByteArrayMap

All Known Subinterfaces:

ByteArrayMap, IOSequentialByteArrayMap

public interface IOByteArrayMap

A map of byte[] to byte[] that may be disk or network bound. This interface is not intended to be expressed by implementations supporting duplicate keys.

Method Summary

Modifier and Type	Method	Description
boolean	containsKey(byte[] key)	Returns true iff key is present.
byte[]	get(byte[] key)	Gets the byte array associated with key, or none if this key is not present.
IOByteArrayEnumeration	keys()	Returns a list of all keys in the hash, provided no inserts or deletes are made while the Enumeration is untraversed.
void	put(byte[] key, byte[] value)	Associates the byte[] key with the byte[] value in the hash.
boolean	putNoReplace(byte[] key, byte[] value)	Associates the byte[] key with the byte[] value in the hash.
boolean	remove(byte[] key)	Removes the key, value pair whose key is the argument.

Method Detail

get

byte[] get(byte[] key)
    throws java.io.IOException

Gets the byte array associated with key, or none if this key is not present.

Throws:

java.io.IOException

put

void put(byte[] key,
         byte[] value)
  throws java.io.IOException

Associates the byte[] key with the byte[] value in the hash. If key is already present in the map, the old value associated with it is replaced by value.

Throws:

java.io.IOException

putNoReplace

boolean putNoReplace(byte[] key,
                     byte[] value)
              throws java.io.IOException

Associates the byte[] key with the byte[] value in the hash. Fails (and returns false) if key is already present in the map.

Throws:

java.io.IOException

remove

boolean remove(byte[] key)
        throws java.io.IOException

Removes the key, value pair whose key is the argument.

Throws:

java.io.IOException

containsKey

boolean containsKey(byte[] key)
             throws java.io.IOException

Returns true iff key is present.

Throws:

java.io.IOException

keys

IOByteArrayEnumeration keys()
                     throws java.io.IOException

Returns a list of all keys in the hash, provided no inserts or deletes are made while the Enumeration is untraversed. If inserts or deletes are made. the behavior is undefined.

Throws:

java.io.IOException