/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2010-2011, Red Hat, Inc. and/or its affiliates or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat, Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.search.util.impl;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.apache.solr.common.ResourceLoader;
import org.apache.solr.util.plugin.ResourceLoaderAware;
import org.hibernate.search.SearchException;
/**
* @author Emmanuel Bernard
* @author Sanne Grinovero <sanne@hibernate.org> (C) 2011 Red Hat Inc.
*/
public class HibernateSearchResourceLoader implements ResourceLoader {
private final String charset;
public HibernateSearchResourceLoader() {
this.charset = null;
}
public HibernateSearchResourceLoader(String charset) {
this.charset = charset;
}
public InputStream openResource(String resource) throws IOException {
return FileHelper.openResource( resource );
}
public List<String> getLines(String resource) throws IOException {
final InputStream stream = openResource( resource );
if ( stream == null ) {
throw new SearchException( "Resource not found: " + resource );
}
try {
final InputStreamReader charsetAwareReader;
charsetAwareReader = charset == null ?
new InputStreamReader( stream ) :
new InputStreamReader( stream, charset );
final List<String> results = new ArrayList<String>();
final BufferedReader reader = new BufferedReader( charsetAwareReader );
try {
String line = reader.readLine();
while ( line != null ) {
// comment or empty line
if ( line.length() != 0 && !line.startsWith( "#" ) ) {
results.add( line );
}
line = reader.readLine();
}
}
finally {
FileHelper.closeResource( reader );
}
return Collections.unmodifiableList( results );
}
finally {
FileHelper.closeResource( stream );
}
}
public Object newInstance(String cname, String... subpackages) {
if ( subpackages != null && subpackages.length > 0 ) {
throw new UnsupportedOperationException( "newInstance(classname, packages) not implemented" );
}
final Object instance = ClassLoaderHelper.instanceFromName(
Object.class, cname, this.getClass(), "Solr resource"
);
if ( instance instanceof ResourceLoaderAware ) {
( (ResourceLoaderAware) instance ).inform( this );
}
return instance;
}
}