gate.mimir.util

Class MG4JTools

java.lang.Object

gate.mimir.util.MG4JTools

public class MG4JTools
extends Object

Class providing utility methods for working with MG4J indexes.

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.slf4j.Logger	logger

Constructor Summary

Constructors

Constructor and Description
MG4JTools()

Method Summary

Modifier and Type	Method and Description
static it.unimi.di.big.mg4j.index.Index	openMg4jIndex(URI indexUri) Opens one MG4J index.
static void	upgradeIndex(URI indexUri) Given a index URI (a file URI denoting the index base name for all the index files), this method checks if the index if an older version, and upgrades it to the current version, making sure it can be opened.

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected static final org.slf4j.Logger logger

Constructor Detail

MG4JTools

public MG4JTools()

Method Detail

upgradeIndex

public static void upgradeIndex(URI indexUri)
                         throws IOException,
                                ClassNotFoundException,
                                org.apache.commons.configuration.ConfigurationException

Given a index URI (a file URI denoting the index base name for all the index files), this method checks if the index if an older version, and upgrades it to the current version, making sure it can be opened.

Parameters:

indexUri -

Throws:

IOException

ClassNotFoundException

org.apache.commons.configuration.ConfigurationException

openMg4jIndex

public static it.unimi.di.big.mg4j.index.Index openMg4jIndex(URI indexUri)
                                                      throws org.apache.commons.configuration.ConfigurationException,
                                                             SecurityException,
                                                             IOException,
                                                             URISyntaxException,
                                                             ClassNotFoundException,
                                                             InstantiationException,
                                                             IllegalAccessException,
                                                             InvocationTargetException,
                                                             NoSuchMethodException

Opens one MG4J index.

Parameters:

indexUri - a URI denoting the basename for the index (a file path with the correct basename, but no extension).

Returns:

the MG4J Index object.

Throws:

org.apache.commons.configuration.ConfigurationException

SecurityException

IOException

URISyntaxException

ClassNotFoundException

InstantiationException

IllegalAccessException

InvocationTargetException

NoSuchMethodException