net.cnri.repository.bdbje

Class NameValueKeyCreator

java.lang.Object

net.cnri.repository.bdbje.NameValueKeyCreator

All Implemented Interfaces:

com.sleepycat.je.SecondaryKeyCreator

public class NameValueKeyCreator
extends java.lang.Object
implements com.sleepycat.je.SecondaryKeyCreator

Constructor Summary

Constructors

Constructor and Description
NameValueKeyCreator()

Method Summary

Methods

Modifier and Type	Method and Description
boolean	createSecondaryKey(com.sleepycat.je.SecondaryDatabase secDb, com.sleepycat.je.DatabaseEntry keyEntry, com.sleepycat.je.DatabaseEntry dataEntry, com.sleepycat.je.DatabaseEntry resultEntry) Creates a secondary key for each attribute that is set on the database.
static byte[]	generateElementAttributKey(java.lang.String elementName, java.lang.String elementAttributeName, java.lang.String value)
static byte[]	generateKey(java.lang.String name, java.lang.String value)

Methods inherited from class java.lang.Object

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

Constructor Detail

NameValueKeyCreator

public NameValueKeyCreator()

Method Detail

createSecondaryKey

public boolean createSecondaryKey(com.sleepycat.je.SecondaryDatabase secDb,
                         com.sleepycat.je.DatabaseEntry keyEntry,
                         com.sleepycat.je.DatabaseEntry dataEntry,
                         com.sleepycat.je.DatabaseEntry resultEntry)

Creates a secondary key for each attribute that is set on the database. This is used an a secondary Database that is an index of the first. Secondary keys for element attributes are also created This allows fast searching of the database when we want all objects that have a particular attribute with a particular value.

Specified by:

createSecondaryKey in interface com.sleepycat.je.SecondaryKeyCreator

generateKey

public static byte[] generateKey(java.lang.String name,
                 java.lang.String value)

generateElementAttributKey

public static byte[] generateElementAttributKey(java.lang.String elementName,
                                java.lang.String elementAttributeName,
                                java.lang.String value)