org.netbeans.mdr.persistence.btreeimpl.btreeindex
Class StringInfo

java.lang.Object
  org.netbeans.mdr.persistence.btreeimpl.btreeindex.EntryTypeInfo
      org.netbeans.mdr.persistence.btreeimpl.btreeindex.StringInfo

public class StringInfo
extends EntryTypeInfo

EntryTypeInfo implementation for type String

Version:

1.0

Author:

Dana Bergen

Constructor Summary

StringInfo()

Method Summary

byte	compare(byte[] key1buffer, byte[] key2buffer, int offset, int length) Compare two items of this type which are stored in byte arrays.
java.lang.Object	fromBuffer(byte[] buffer) Create an object from the contents of the byte array.
int	getLength() Returns the length of an item of this type, or 0 if variable length.
boolean	isFixedLength() Returns true if this is a fixed length type, otherwise returns false;
byte[]	toBuffer(java.lang.Object object) Store the value of the object 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

StringInfo

public StringInfo()

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 object)

Description copied from class: EntryTypeInfo

Store the value of the object in a byte array.

Specified by:

toBuffer in class EntryTypeInfo

Returns:

newly allocated byte array

fromBuffer

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

Description copied from class: EntryTypeInfo

Create an object from the contents of the byte array.

Specified by:

fromBuffer in class EntryTypeInfo

Returns:

new object

compare

public byte compare(byte[] key1buffer,
                    byte[] key2buffer,
                    int offset,
                    int length)

Description copied from class: EntryTypeInfo

Compare two items of this type which are stored in byte arrays.

Specified by:

compare in class EntryTypeInfo

offset - offset into key2 of target key

length - length in key2 of target key

Returns:

Returns one of:

EQUAL if the two keys are equal

GREATER if key greater than key2

LESS if key less than key2

getLength

public int getLength()

Description copied from class: EntryTypeInfo

Returns the length of an item of this type, or 0 if variable length.

Specified by:

getLength in class EntryTypeInfo

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