| /* |
| * Copyright 2009 Niclas Hedhman. |
| * |
| * Licensed 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. |
| */ |
| |
| package org.apache.zest.index.reindexer.internal; |
| |
| import java.util.ArrayList; |
| import org.apache.zest.api.common.QualifiedName; |
| import org.apache.zest.api.configuration.Configuration; |
| import org.apache.zest.api.entity.Identity; |
| import org.apache.zest.api.injection.scope.Service; |
| import org.apache.zest.api.injection.scope.Structure; |
| import org.apache.zest.api.injection.scope.This; |
| import org.apache.zest.api.service.ServiceReference; |
| import org.apache.zest.index.reindexer.Reindexer; |
| import org.apache.zest.index.reindexer.ReindexerConfiguration; |
| import org.apache.zest.io.Output; |
| import org.apache.zest.io.Receiver; |
| import org.apache.zest.io.Sender; |
| import org.apache.zest.spi.entity.EntityState; |
| import org.apache.zest.spi.entitystore.EntityStore; |
| import org.apache.zest.spi.entitystore.StateChangeListener; |
| import org.apache.zest.spi.module.ModuleSpi; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class ReindexerMixin |
| implements Reindexer |
| { |
| private static QualifiedName identityQN; |
| |
| static |
| { |
| try |
| { |
| identityQN = QualifiedName.fromAccessor( Identity.class.getMethod( "identity" ) ); |
| } |
| catch( NoSuchMethodException e ) |
| { |
| throw new InternalError( "Zest Core Runtime codebase is corrupted. Contact Zest team: ReindexerMixin" ); |
| } |
| } |
| |
| @This |
| private Configuration<ReindexerConfiguration> configuration; |
| |
| @Service |
| private EntityStore store; |
| |
| @Service |
| private Iterable<ServiceReference<StateChangeListener>> listeners; |
| |
| @Structure |
| private ModuleSpi module; |
| |
| private Logger logger = LoggerFactory.getLogger( Reindexer.class ); |
| |
| @Override |
| public void reindex() |
| { |
| configuration.refresh(); |
| ReindexerConfiguration conf = configuration.get(); |
| Integer loadValue = conf.loadValue().get(); |
| if( loadValue == null ) |
| { |
| loadValue = 50; |
| } |
| new ReindexerOutput( loadValue ).reindex( store ); |
| } |
| |
| private class ReindexerOutput |
| implements Output<EntityState, RuntimeException>, Receiver<EntityState, RuntimeException> |
| { |
| private int count; |
| private int loadValue; |
| private ArrayList<EntityState> states; |
| |
| public ReindexerOutput( Integer loadValue ) |
| { |
| this.loadValue = loadValue; |
| states = new ArrayList<>(); |
| } |
| |
| public void reindex( EntityStore store ) |
| { |
| |
| store.entityStates( module ).transferTo( this ); |
| reindexState(); |
| } |
| |
| @Override |
| public <SenderThrowableType extends Throwable> void receiveFrom( Sender<? extends EntityState, SenderThrowableType> sender ) |
| throws RuntimeException, SenderThrowableType |
| { |
| sender.sendTo( this ); |
| reindexState(); |
| } |
| |
| @Override |
| public void receive( EntityState item ) |
| throws RuntimeException |
| { |
| count++; |
| item.setPropertyValue( identityQN, item.identity().identity() ); |
| states.add( item ); |
| |
| if( states.size() >= loadValue ) |
| { |
| reindexState(); |
| } |
| } |
| |
| public void reindexState() |
| { |
| for( ServiceReference<StateChangeListener> listener : listeners ) |
| { |
| listener.get().notifyChanges( states ); |
| } |
| states.clear(); |
| logger.debug( "Reindexed " + count + " entities" ); |
| } |
| } |
| } |