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ASV Toolbox is a modular collection of tools for the exploration of written language data. They work either on word lists or text and solve several linguistic classification and clustering tasks. The topics covered contain language detection, POS-tagging, base form reduction, named entity recognition, and terminology extraction. On a more abstract level, the algorithms deal with various kinds of word similarity, using pattern based and statistical approaches. The collection can be used to work on large real world data sets as well as for studying the underlying algorithms. The ASV Toolbox can work on plain text files and connect to a MySQL database. While it is especially designed to work with corpora of the Leipzig Corpora Collection, it can easily be adapted to other sources.
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/*******************************************************************************
* The MIT License (MIT)
* Copyright (c) 2007, University of Leipzig, Institut für Informatik,
* Abteilung Autmatische Sprachverarbeitung
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
******************************************************************************/
/*
*
$Header: /usr/cvs/toolbox/src/de/uni_leipzig/asv/utils/Producer.java,v 1.5 2007/05/04 11:04:11 lsteiner Exp $
*
* Created on Jun 9, 2005 by knorke
*
* package de.uni_leipzig.asv.utils for knorke project
*
*/
package de.uni_leipzig.asv.utils;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
/**
* @author knorke
* @date Jun 9, 2005 2:32:15 PM
*/
public class Producer extends Thread {
private int interval = 50000;
private final Consumer consumer;
private final DBConnection connection;
private final String tablename;
private String[] cols;
private final String primkey;
private int lastKey = -1;
/**
* @param connection
* @param tablename
* @param cols
* can be null or empty (to fetch ALL columns)
* @param primkey
*/
public Producer(DBConnection connection, String tablename, String[] cols,
String primkey) {
this.consumer = new Consumer();
this.connection = connection;
this.tablename = tablename;
if (cols == null) {
this.cols = new String[0];
} else {
this.cols = cols;
}
this.primkey = primkey;
}
public Consumer getConsumer() {
return this.consumer;
}
public int getInterval() {
return this.interval;
}
public void setInterval(int i) {
if (i > 0) {
this.interval = i;
} else {
System.err
.println("ProducerThread: cannot set the fetching interval below zero");
}
}
private ResultSet fetch(int startkey) {
StringBuffer statement = new StringBuffer();
if (this.cols.length == 0) {
statement
.append("SELECT * FROM " + this.tablename + " WHERE "
+ this.primkey + ">" + startkey + " LIMIT "
+ this.interval);
} else {
statement.append("SELECT " + this.primkey);
for (String element : this.cols) {
statement.append("," + element);
}
statement
.append(" FROM " + this.tablename + " WHERE "
+ this.primkey + ">" + startkey + " LIMIT "
+ this.interval);
}
System.err.println("ProducerThread: fetching with statement "
+ statement.toString());
return this.connection.executeQuery(statement.toString());
}
@Override
public void run() {
ResultSet resset = null;
int linenrs = 0;
ResultSetMetaData metadata = null;
String data[] = null;
// main loop
while (true) {
synchronized (this.consumer) {
// fuellstand ist unter threshold gefallen
// ein nachfuellen mit daten ist noetig
if (this.consumer.size() <= this.consumer.getFillThreshold()) {
System.err
.println("ProducerThread: good morning (bufsize: "
+ this.consumer.size() + ")");
try {
// if this is the first fetch()-call, the first key is
// -1
resset = fetch(this.lastKey);
metadata = resset.getMetaData();
while (resset.next()) {
if (this.cols.length > 0) {
if (metadata.getColumnCount() - 1 != this.cols.length) {
System.err.println("ProducerThread: got "
+ metadata.getColumnCount()
+ " cols, but i've requested "
+ this.cols.length + " cols!");
throw new RuntimeException(
"critical error! please submit a full bug report");
}
data = new String[this.cols.length];
// fetch the requested cols by names
for (int i = 0; i < this.cols.length; i++) {
data[i] = resset.getString(this.cols[i]);
}
} // end if(this.cols != null)
else {
// build a stringarray
data = new String[metadata.getColumnCount()];
for (int i = 0; i < data.length; i++) {
data[i] = resset.getString(i + 1);
}
}
// get the primary key, to know the next interval
// (from lastkey to lastkey+intervall)
this.lastKey = resset.getInt(this.primkey);
// count the linenr fetched
linenrs++;
// some debug output
// System.err.println( "ProducerThread: (" +
// this.lastKey + ") adding " + data + " " +
// data.length );
// adding the coldatas to the consumer
this.consumer.add(data);
}
} catch (SQLException e) {
e.printStackTrace();
System.exit(1);
}
// System.err.println("<< "+linenrs+" != "+this.interval);
if (linenrs < this.interval) {
System.err.println("ProducerThread: all data fetched");
this.consumer.setEOF(true);
break;
} else {
linenrs = 0;
}
} else {
try {
this.consumer.notify();
// this.consumer.wait(5000);
System.err
.println("ProducerThread: good n8 (bufsize: "
+ this.consumer.size() + ")");
this.consumer.wait();
} catch (InterruptedException e) {
System.err.println("IOIterator: Exception cought!");
e.printStackTrace();
throw new RuntimeException(e.getMessage());
}
}
} // end else
} // end main loop
}
}