org.netbeans.mdr.persistence.btreeimpl.btreeindex

Class IntInfo

java.lang.Object

org.netbeans.mdr.persistence.btreeimpl.btreeindex.EntryTypeInfo

org.netbeans.mdr.persistence.btreeimpl.btreeindex.IntInfo

public class IntInfo
extends EntryTypeInfo

EntryTypeInfo implementation for integer data.

Constructor Summary

Constructors

Constructor and Description
IntInfo()

Method Summary

Methods

Modifier and Type	Method and Description
byte	compare(byte[] key1Buffer, byte[] key2Buffer, int offset, int length) Compares two integers stored in byte arrays
java.lang.Object	fromBuffer(byte[] buffer) Reads an integer from a byte array
int	fromBuffer(byte[] buffer, int offset) Returns an int read from the 4 bytes starting at the location passed in.
int	getLength() Returns the length of an integer
boolean	isFixedLength() Returns true if this is a fixed length type, otherwise returns false;
byte[]	toBuffer(java.lang.Object i) Store an integer in a byte array
java.lang.String	typeName() Returns the name of this type as a String.

Methods inherited from class org.netbeans.mdr.persistence.btreeimpl.btreeindex.EntryTypeInfo

getEntryTypeInfo, objectFromBuffer

Methods inherited from class java.lang.Object

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

Constructor Detail

IntInfo

public IntInfo()

Method Detail

typeName

public java.lang.String typeName()

Description copied from class: EntryTypeInfo

Returns the name of this type as a String.

Specified by:

typeName in class EntryTypeInfo

toBuffer

public byte[] toBuffer(java.lang.Object i)

Store an integer in a byte array

Specified by:

toBuffer in class EntryTypeInfo

Parameters:

i - Integer to be stored

Returns:

byte array containing the integer

fromBuffer

public java.lang.Object fromBuffer(byte[] buffer)

Reads an integer from a byte array

Specified by:

fromBuffer in class EntryTypeInfo

Parameters:

buffer - byte array containing an integer

Returns:

new Integer containing the value read from the byte array

fromBuffer

public int fromBuffer(byte[] buffer,
             int offset)

Returns an int read from the 4 bytes starting at the location passed in.

compare

public byte compare(byte[] key1Buffer,
           byte[] key2Buffer,
           int offset,
           int length)

Compares two integers stored in byte arrays

Specified by:

compare in class EntryTypeInfo

Parameters:

key1Buffer - byte array containing integer search key

key2Buffer - byte array containing integer target key

offset - offset into key2Buffer of target key

length - should always be 4

Returns:

Returns one of:

EQUAL if the two keys are equal

GREATER if search key is greater than target key

LESS if search key is less than target key

getLength

public int getLength()

Returns the length of an integer

Specified by:

getLength in class EntryTypeInfo

Returns:

always returns 4

isFixedLength

public boolean isFixedLength()

Description copied from class: EntryTypeInfo

Returns true if this is a fixed length type, otherwise returns false;

Specified by:

isFixedLength in class EntryTypeInfo