/**
* Copyright (c) 2010, UNC-Chapel Hill and Nescent
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided
that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this list of conditions and
* the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other materials provided with the distribution.
* Neither the name of the UNC-Chapel Hill or Nescent nor the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
@author Jose R. Perez-Aguera
*/
package edu.unc.ils.mrc.hive.ir.lucene.indexing;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.util.Date;
import java.util.Set;
import java.util.SortedMap;
import java.util.TreeMap;
import javax.xml.namespace.QName;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.lucene.index.CorruptIndexException;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.Term;
import org.apache.lucene.index.TermEnum;
import org.apache.lucene.search.IndexSearcher;
public class IndexAdministrator {
private static final Log logger = LogFactory.getLog(IndexAdministrator.class);
public static String getDate(String indexName) {
try {
Long date = IndexReader.lastModified(indexName);
return new Date(date).toString();
} catch (CorruptIndexException e) {
logger.error(e);
} catch (IOException e) {
logger.error(e);
}
return null;
}
public static TreeMap<String, QName> getSubAlphaIndex(String startLetter,
TreeMap<String, QName> index) {
boolean finded = false;
String start = "";
String end = "";
int j = 0;
String ant = null;
Set<String> keys = index.keySet();
for (String s : keys) {
String sl = s.toLowerCase();
if (startLetter.equals("[0-9]") && Character.isDigit(sl.charAt(0)) && !finded) {
start = s;
finded = true;
}
else if (sl.startsWith(startLetter) && !finded) {
start = s;
finded = true;
}
if(finded)
j++;
if (startLetter.equals("[0-9]") && !Character.isDigit(sl.charAt(0)) && finded) {
end = ant;
break;
}
else if (!startLetter.equals("[0-9]") && !sl.startsWith(startLetter) && finded) {
end = ant;
break;
}
ant = s;
}
TreeMap<String, QName> tree = null;
if (j > 1) {
SortedMap<String, QName> l2 = index.subMap(start, true, end, true);
logger.debug("Result size: " + l2.size());
return tree = new TreeMap<String, QName>(l2);
} else if (j == 1) {
tree = new TreeMap<String, QName>();
tree.put(start,index.get(start));
logger.debug("Result size: " + tree.size());
return tree;
}
return tree = new TreeMap<String, QName>();
}
public static TreeMap<String, QName> getTopConceptIndex(
String topConceptFilePath) {
File fichero = new File(topConceptFilePath);
ObjectInputStream ois;
try {
ois = new ObjectInputStream(new FileInputStream(fichero));
TreeMap<String, QName> l = (TreeMap<String, QName>) ois.readObject();
ois.close();
logger.debug("Top concept index loaded from " + topConceptFilePath);
return l;
} catch (FileNotFoundException e) {
logger.error(e);
} catch (IOException e) {
logger.error(e);
} catch (ClassNotFoundException e) {
logger.error(e);
}
return null;
}
public static TreeMap<String, QName> getAlphaIndex(String alphaFilePath) {
File fichero = new File(alphaFilePath);
ObjectInputStream ois;
try {
ois = new ObjectInputStream(new FileInputStream(fichero));
TreeMap<String, QName> l = (TreeMap<String, QName>) ois.readObject();
ois.close();
logger.debug("AlphaIndex loaded from " + alphaFilePath);
return l;
} catch (FileNotFoundException e) {
logger.error(e);
} catch (IOException e) {
logger.error(e);
} catch (ClassNotFoundException e) {
logger.error(e);
}
return null;
}
public static int getNumconcepts(String indexName) {
try {
return IndexReader.open(indexName).numDocs();
} catch (CorruptIndexException e) {
logger.error(e);
} catch (IOException e) {
logger.error(e);
}
return 0;
}
public static int getNumBroader(String indexName) {
IndexSearcher is;
try {
is = new IndexSearcher(indexName);
IndexReader ir = is.getIndexReader();
TermEnum te = ir.terms();
int broader = 0;
while (te.next()) {
Term currTerm = te.term();
if (currTerm.field().equals("broaderURI"))
broader++;
}
te.close();
is.close();
return broader;
} catch (CorruptIndexException e) {
logger.error(e);
} catch (IOException e) {
logger.error(e);
}
return 0;
}
public static int getNumNarrower(String indexName) {
IndexSearcher is;
try {
is = new IndexSearcher(indexName);
IndexReader ir = is.getIndexReader();
TermEnum te = ir.terms();
int narrower = 0;
while (te.next()) {
Term currTerm = te.term();
if (currTerm.field().equals("narrowerURI"))
narrower++;
}
te.close();
is.close();
return narrower;
} catch (CorruptIndexException e) {
logger.error(e);
} catch (IOException e) {
logger.error(e);
}
return 0;
}
public static int getNumRelated(String indexName) {
IndexSearcher is;
try {
is = new IndexSearcher(indexName);
IndexReader ir = is.getIndexReader();
TermEnum te = ir.terms();
int related = 0;
while (te.next()) {
Term currTerm = te.term();
if (currTerm.field().equals("relatedURI"))
related++;
}
te.close();
is.close();
return related;
} catch (CorruptIndexException e) {
logger.error(e);
} catch (IOException e) {
logger.error(e);
}
return 0;
}
public static int getNumRelationShips(String indexName) {
IndexSearcher is;
try {
is = new IndexSearcher(indexName);
IndexReader ir = is.getIndexReader();
TermEnum te = ir.terms();
int broader = 0;
int narrower = 0;
int related = 0;
while (te.next()) {
Term currTerm = te.term();
if (currTerm.field().equals("broaderURI"))
broader++;
if (currTerm.field().equals("narrowerURI"))
narrower++;
if (currTerm.field().equals("relatedURI"))
related++;
}
te.close();
is.close();
return broader + narrower + related;
} catch (CorruptIndexException e) {
logger.error(e);
} catch (IOException e) {
logger.error(e);
}
return 0;
}
public static void main(String[] args) throws CorruptIndexException,
IOException {
String indexName = "/home/hive/hive-data/mesh/meshIndex";
int n = IndexAdministrator.getNumRelationShips(indexName);
System.out.println("RelationShips: " + n);
int c = IndexAdministrator.getNumconcepts(indexName);
System.out.println("Concepts: " + c);
String date = IndexAdministrator.getDate(indexName);
System.out.println("Fecha: " + date);
}
}