thredds.inventory.bdb

Class MetadataManager

java.lang.Object

thredds.inventory.bdb.MetadataManager

public class MetadataManager
extends Object

MetadataManager using Berkeley DB Java Edition. Single environment, with multiple databases. All threads share one environment; multiple processes can only have one writer at a time. Each collection is a "database". Each database has a set of key/value pairs. default root dir is ${user.home}/.unidata/bdb default TDS uses {tomcat_home}/content/thredds/cache/collection

Since:

Aug 20, 2008

Author:

caron

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	MetadataManager.KeyValue

Constructor Summary

Constructors

Constructor and Description
MetadataManager(String collectionName)

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
static void	closeAll()
void	delete(Map<String,MFile> current)
void	delete(String theKey)
static void	delete(String collectionName, String key)
static void	deleteCollection(String collectionName)
byte[]	get(byte[] key)
String	get(String key)
byte[]	getBytes(String key)
static String	getCacheLocation()
static List<String>	getCollectionNames()
List<MetadataManager.KeyValue>	getContent()
static void	main(String[] args)
void	put(byte[] key, byte[] value)
void	put(String key, byte[] value)
void	put(String key, String value)
static void	setCacheDirectory(String dir, long _maxSizeBytes, int _jvmPercent)
static void	showEnvStats(Formatter f)
void	showStats(Formatter f)
static void	sync()

Methods inherited from class java.lang.Object

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

Constructor Detail

MetadataManager

public MetadataManager(String collectionName)
                throws com.sleepycat.je.DatabaseException,
                       IOException

Throws:

com.sleepycat.je.DatabaseException

IOException

Method Detail

setCacheDirectory

public static void setCacheDirectory(String dir,
                     long _maxSizeBytes,
                     int _jvmPercent)

closeAll

public static void closeAll()

showEnvStats

public static void showEnvStats(Formatter f)

getCacheLocation

public static String getCacheLocation()

sync

public static void sync()

getCollectionNames

public static List<String> getCollectionNames()

deleteCollection

public static void deleteCollection(String collectionName)
                             throws Exception

Throws:

Exception

delete

public static void delete(String collectionName,
          String key)

put

public void put(String key,
       String value)

put

public void put(byte[] key,
       byte[] value)

put

public void put(String key,
       byte[] value)

get

public byte[] get(byte[] key)

getBytes

public byte[] getBytes(String key)

get

public String get(String key)

delete

public void delete(String theKey)

delete

public void delete(Map<String,MFile> current)

close

public void close()

showStats

public void showStats(Formatter f)

getContent

public List<MetadataManager.KeyValue> getContent()
                                          throws com.sleepycat.je.DatabaseException,
                                                 UnsupportedEncodingException

Throws:

com.sleepycat.je.DatabaseException

UnsupportedEncodingException

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception