package org.apache.maven.archiva.indexer.search;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.collections.Predicate;
import org.apache.commons.collections.Transformer;
import org.apache.lucene.document.Document;
import org.apache.lucene.queryParser.MultiFieldQueryParser;
import org.apache.lucene.queryParser.ParseException;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.search.Hits;
import org.apache.lucene.search.MultiSearcher;
import org.apache.lucene.search.Searchable;
import org.apache.maven.archiva.configuration.ArchivaConfiguration;
import org.apache.maven.archiva.configuration.ConfigurationNames;
import org.apache.maven.archiva.configuration.ManagedRepositoryConfiguration;
import org.apache.maven.archiva.indexer.RepositoryContentIndex;
import org.apache.maven.archiva.indexer.bytecode.BytecodeHandlers;
import org.apache.maven.archiva.indexer.filecontent.FileContentHandlers;
import org.apache.maven.archiva.indexer.functors.UserAllowedToSearchRepositoryPredicate;
import org.apache.maven.archiva.indexer.hashcodes.HashcodesHandlers;
import org.apache.maven.archiva.indexer.hashcodes.HashcodesKeys;
import org.apache.maven.archiva.indexer.lucene.LuceneEntryConverter;
import org.apache.maven.archiva.indexer.lucene.LuceneQuery;
import org.apache.maven.archiva.indexer.lucene.LuceneRepositoryContentRecord;
import org.codehaus.plexus.logging.AbstractLogEnabled;
import org.codehaus.plexus.personality.plexus.lifecycle.phase.Initializable;
import org.codehaus.plexus.personality.plexus.lifecycle.phase.InitializationException;
import org.codehaus.plexus.registry.Registry;
import org.codehaus.plexus.registry.RegistryListener;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/**
* DefaultCrossRepositorySearch
*
* @author <a href="mailto:joakime@apache.org">Joakim Erdfelt</a>
* @version $Id: DefaultCrossRepositorySearch.java 582987 2007-10-08 22:07:39Z joakime $
* @plexus.component role="org.apache.maven.archiva.indexer.search.CrossRepositorySearch" role-hint="default"
*/
public class DefaultCrossRepositorySearch
extends AbstractLogEnabled
implements CrossRepositorySearch, RegistryListener, Initializable
{
/**
* @plexus.requirement role-hint="bytecode"
*/
private Transformer bytecodeIndexTransformer;
/**
* @plexus.requirement role-hint="filecontent"
*/
private Transformer filecontentIndexTransformer;
/**
* @plexus.requirement role-hint="hashcodes"
*/
private Transformer hashcodesIndexTransformer;
/**
* @plexus.requirement role-hint="searchable"
*/
private Transformer searchableTransformer;
/**
* @plexus.requirement role-hint="index-exists"
*/
private Predicate indexExistsPredicate;
/**
* @plexus.requirement
*/
private ArchivaConfiguration configuration;
private List localIndexedRepositories = new ArrayList();
public SearchResults searchForChecksum( String checksum, SearchResultLimits limits )
{
List indexes = getHashcodeIndexes();
try
{
QueryParser parser = new MultiFieldQueryParser( new String[]{HashcodesKeys.MD5, HashcodesKeys.SHA1},
new HashcodesHandlers().getAnalyzer() );
LuceneQuery query = new LuceneQuery( parser.parse( checksum ) );
SearchResults results = searchAll( query, limits, indexes );
results.getRepositories().addAll( this.localIndexedRepositories );
return results;
}
catch ( ParseException e )
{
getLogger().warn( "Unable to parse query [" + checksum + "]: " + e.getMessage(), e );
}
// empty results.
return new SearchResults();
}
public SearchResults searchForBytecode( String term, SearchResultLimits limits )
{
List indexes = getHashcodeIndexes();
try
{
QueryParser parser = new BytecodeHandlers().getQueryParser();
LuceneQuery query = new LuceneQuery( parser.parse( term ) );
SearchResults results = searchAll( query, limits, indexes );
results.getRepositories().addAll( this.localIndexedRepositories );
return results;
}
catch ( ParseException e )
{
getLogger().warn( "Unable to parse query [" + term + "]: " + e.getMessage(), e );
}
// empty results.
return new SearchResults();
}
public SearchResults searchForTerm( String term, SearchResultLimits limits )
{
List indexes = getFileContentIndexes();
try
{
QueryParser parser = new FileContentHandlers().getQueryParser();
LuceneQuery query = new LuceneQuery( parser.parse( term ) );
SearchResults results = searchAll( query, limits, indexes );
results.getRepositories().addAll( this.localIndexedRepositories );
return results;
}
catch ( ParseException e )
{
getLogger().warn( "Unable to parse query [" + term + "]: " + e.getMessage(), e );
}
// empty results.
return new SearchResults();
}
private SearchResults searchAll( LuceneQuery luceneQuery, SearchResultLimits limits, List indexes )
{
org.apache.lucene.search.Query specificQuery = luceneQuery.getLuceneQuery();
SearchResults results = new SearchResults();
if ( indexes.isEmpty() )
{
// No point going any further.
return results;
}
// Setup the converter
LuceneEntryConverter converter = null;
RepositoryContentIndex index = (RepositoryContentIndex) indexes.get( 0 );
converter = index.getEntryConverter();
// Process indexes into an array of Searchables.
List searchableList = new ArrayList( indexes );
CollectionUtils.transform( searchableList, searchableTransformer );
Searchable searchables[] = new Searchable[searchableList.size()];
searchableList.toArray( searchables );
MultiSearcher searcher = null;
try
{
// Create a multi-searcher for looking up the information.
searcher = new MultiSearcher( searchables );
// Perform the search.
Hits hits = searcher.search( specificQuery );
int hitCount = hits.length();
// Now process the limits.
results.setLimits( limits );
results.setTotalHits( hitCount );
int fetchCount = limits.getPageSize();
int offset = ( limits.getSelectedPage() * limits.getPageSize() );
if ( limits.getSelectedPage() == SearchResultLimits.ALL_PAGES )
{
fetchCount = hitCount;
offset = 0;
}
// Goto offset.
if ( offset < hitCount )
{
// only process if the offset is within the hit count.
for ( int i = 0; i <= fetchCount; i++ )
{
// Stop fetching if we are past the total # of available hits.
if ( offset + i >= hitCount )
{
break;
}
try
{
Document doc = hits.doc( offset + i );
LuceneRepositoryContentRecord record = converter.convert( doc );
results.addHit( record );
}
catch ( java.text.ParseException e )
{
getLogger().warn( "Unable to parse document into record: " + e.getMessage(), e );
}
}
}
}
catch ( IOException e )
{
getLogger().error( "Unable to setup multi-search: " + e.getMessage(), e );
}
finally
{
try
{
if ( searcher != null )
{
searcher.close();
}
}
catch ( IOException ie )
{
getLogger().error( "Unable to close index searcher: " + ie.getMessage(), ie );
}
}
return results;
}
private Predicate getAllowedToSearchReposPredicate()
{
return new UserAllowedToSearchRepositoryPredicate();
}
public List getBytecodeIndexes()
{
List ret = new ArrayList();
synchronized ( this.localIndexedRepositories )
{
ret.addAll( CollectionUtils.select( this.localIndexedRepositories, getAllowedToSearchReposPredicate() ) );
CollectionUtils.transform( ret, bytecodeIndexTransformer );
CollectionUtils.filter( ret, indexExistsPredicate );
}
return ret;
}
public List getFileContentIndexes()
{
List ret = new ArrayList();
synchronized ( this.localIndexedRepositories )
{
ret.addAll( CollectionUtils.select( this.localIndexedRepositories, getAllowedToSearchReposPredicate() ) );
CollectionUtils.transform( ret, filecontentIndexTransformer );
CollectionUtils.filter( ret, indexExistsPredicate );
}
return ret;
}
public List getHashcodeIndexes()
{
List ret = new ArrayList();
synchronized ( this.localIndexedRepositories )
{
ret.addAll( CollectionUtils.select( this.localIndexedRepositories, getAllowedToSearchReposPredicate() ) );
CollectionUtils.transform( ret, hashcodesIndexTransformer );
CollectionUtils.filter( ret, indexExistsPredicate );
}
return ret;
}
public void afterConfigurationChange( Registry registry, String propertyName, Object propertyValue )
{
if ( ConfigurationNames.isManagedRepositories( propertyName ) )
{
initRepositories();
}
}
public void beforeConfigurationChange( Registry registry, String propertyName, Object propertyValue )
{
/* Nothing to do here */
}
private void initRepositories()
{
synchronized ( this.localIndexedRepositories )
{
this.localIndexedRepositories.clear();
List<ManagedRepositoryConfiguration> repos = configuration.getConfiguration().getManagedRepositories();
for ( ManagedRepositoryConfiguration repo : repos )
{
if ( repo.isScanned() )
{
localIndexedRepositories.add( repo );
}
}
}
}
public void initialize()
throws InitializationException
{
initRepositories();
configuration.addChangeListener( this );
}
}