Hello,
I would like to use Apace Lucene, but this does not seem to work. I
have created an Android project using Eclipse and added "lucene-
core-2.3.2.jar" (from the recent Lucene package) to my project. This
approach works for non-Android projects, but with Android I get an
"InvocationTargetException" (cause: NoClassDefFoundError).
Any ideas?
My test code:
package org.testandroidlucene;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.search.Hits;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.RAMDirectory;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
public class TestAndroidLuceneActivity extends Activity {
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
try {
String text = "Hallo";
Directory directory = new RAMDirectory();
Analyzer analyzer = new StandardAnalyzer();
IndexWriter indexWriter = new IndexWriter(directory,
analyzer,
true);
Document doc = new Document();
doc.add(new Field("fieldname", text, Field.Store.YES,
Field.Index.TOKENIZED));
indexWriter.addDocument(doc);
indexWriter.optimize();
indexWriter.close();
IndexSearcher indexSearcher = new
IndexSearcher(directory);
QueryParser parser = new QueryParser("fieldname",
analyzer);
Query query = parser.parse("H*l?");
Hits hits = indexSearcher.search(query);
for (int i = 0; i < hits.length(); i++) {
Document hitDoc = hits.doc(i);
Log.i("TestAndroidLuceneActivity", "Lucene: " +
hitDoc.get("fieldname"));
}
indexSearcher.close();
directory.close();
} catch (Exception ex) {
}
}
}
=============================================================
Log Messages:
DEBUG/dalvikvm(1361): Exception Ljava/lang/ClassNotFoundException;
from PathClassLoader.java:205 not caught locally
DEBUG/dalvikvm(1361): NOTE: loadClass
'org.apache.harmony.luni.internal.locale.ISO4Currencies_en_US'
0x40018950 threw an exception
DEBUG/dalvikvm(1361): Exception Ljava/lang/ClassNotFoundException;
from PathClassLoader.java:205 not caught locally
DEBUG/dalvikvm(1361): NOTE: loadClass
'org.apache.harmony.luni.internal.locale.ISO4Currencies_en' 0x40018950
threw an exception
DEBUG/dalvikvm(1361): Exception Ljava/lang/ClassNotFoundException;
from PathClassLoader.java:205 not caught locally
DEBUG/dalvikvm(1361): NOTE: loadClass
'org.apache.harmony.luni.internal.locale.ISO4CurrenciesToDigits_en_US'
0x40018950 threw an exception
DEBUG/dalvikvm(1361): Exception Ljava/lang/ClassNotFoundException;
from PathClassLoader.java:205 not caught locally
DEBUG/dalvikvm(1361): NOTE: loadClass
'org.apache.harmony.luni.internal.locale.ISO4CurrenciesToDigits_en'
0x40018950 threw an exception
DEBUG/dalvikvm(1361): Exception Ljava/lang/ClassNotFoundException;
from PathClassLoader.java:205 not caught locally
DEBUG/dalvikvm(1361): NOTE: loadClass 'java.rmi.Remote' 0x400acd40
threw an exception
WARN/dalvikvm(1361): Failed resolving Lorg/apache/lucene/search/
Searchable; interface 379 'Ljava/rmi/Remote;'
WARN/dalvikvm(1361): Link of class 'Lorg/apache/lucene/search/
Searchable;' failed
DEBUG/dalvikvm(1361): Exception Ljava/lang/ClassNotFoundException;
from PathClassLoader.java:205 not caught locally
DEBUG/dalvikvm(1361): NOTE: loadClass
'org.apache.lucene.search.Searchable' 0x400acd40 threw an exception
WARN/dalvikvm(1361): Failed resolving Lorg/apache/lucene/search/
Searcher; interface 293 'Lorg/apache/lucene/search/Searchable;'
WARN/dalvikvm(1361): Link of class 'Lorg/apache/lucene/search/
Searcher;' failed
DEBUG/dalvikvm(1361): Exception Ljava/lang/ClassNotFoundException;
from PathClassLoader.java:205 not caught locally
DEBUG/dalvikvm(1361): NOTE: loadClass
'org.apache.lucene.search.Searcher' 0x400acd40 threw an exception
WARN/dalvikvm(1361): Link of class 'Lorg/apache/lucene/search/
IndexSearcher;' failed
DEBUG/dalvikvm(1361): Exception Ljava/lang/ClassNotFoundException;
from PathClassLoader.java:205 not caught locally
DEBUG/dalvikvm(1361): NOTE: loadClass
'org.apache.lucene.search.IndexSearcher' 0x400acd40 threw an exception
DEBUG/dalvikvm(1361): Exception Ljava/lang/NoClassDefFoundError; from
TestAndroidLuceneActivity.java:40 not caught locally
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