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TransactionalOperationDispatcher.java
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/
TransactionalOperationDispatcher.java
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/*
* Hibernate Search, full-text search for your domain model
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later
* See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
*/
package org.hibernate.search.backend.impl;
import java.util.List;
import java.util.Map;
import java.util.function.Function;
import java.util.function.Predicate;
import org.hibernate.search.backend.IndexingMonitor;
import org.hibernate.search.backend.LuceneWork;
import org.hibernate.search.backend.spi.OperationDispatcher;
import org.hibernate.search.engine.integration.impl.ExtendedSearchIntegrator;
import org.hibernate.search.engine.spi.EntityIndexBinding;
import org.hibernate.search.indexes.impl.IndexManagerHolder;
import org.hibernate.search.indexes.spi.IndexManager;
import org.hibernate.search.spi.SearchIntegrator;
import org.hibernate.search.store.IndexShardingStrategy;
/**
* A transactional dispatcher, sending works to the
* {@link IndexManager#performOperations(List, org.hibernate.search.backend.IndexingMonitor)}
* method of their respective index manager.
*
* @author Yoann Rodiere
*/
public class TransactionalOperationDispatcher implements OperationDispatcher {
private final Function<Class<?>, EntityIndexBinding> bindingLookup;
private final IndexManagerHolder indexManagerHolder;
private final Predicate<IndexManager> indexManagerFilter;
public TransactionalOperationDispatcher(SearchIntegrator integrator) {
this( integrator, indexManager -> true );
}
public TransactionalOperationDispatcher(SearchIntegrator integrator, Predicate<IndexManager> indexManagerFilter) {
this( integrator.unwrap( ExtendedSearchIntegrator.class ).getIndexManagerHolder(),
integrator::getIndexBinding, indexManagerFilter );
}
public TransactionalOperationDispatcher(IndexManagerHolder indexManagerHolder,
Map<Class<?>, EntityIndexBinding> bindings) {
this( indexManagerHolder, bindings::get, indexManager -> true );
}
private TransactionalOperationDispatcher(IndexManagerHolder indexManagerHolder,
Function<Class<?>, EntityIndexBinding> bindingLookup,
Predicate<IndexManager> indexManagerFilter) {
this.indexManagerHolder = indexManagerHolder;
this.bindingLookup = bindingLookup;
this.indexManagerFilter = indexManagerFilter;
}
@Override
public void dispatch(LuceneWork work, IndexingMonitor monitor) {
WorkQueuePerIndexSplitter context = new WorkQueuePerIndexSplitter( indexManagerHolder, indexManagerFilter );
appendWork( context, work );
context.commitOperations( monitor );
}
@Override
public void dispatch(List<LuceneWork> queue, IndexingMonitor monitor) {
WorkQueuePerIndexSplitter context = new WorkQueuePerIndexSplitter( indexManagerHolder, indexManagerFilter );
for ( LuceneWork work : queue ) {
appendWork( context, work );
}
context.commitOperations( monitor );
}
private void appendWork(WorkQueuePerIndexSplitter context, LuceneWork work) {
final Class<?> entityType = work.getEntityClass();
EntityIndexBinding entityIndexBinding = bindingLookup.apply( entityType );
IndexShardingStrategy shardingStrategy = entityIndexBinding.getSelectionStrategy();
TransactionalOperationExecutor executor = work.acceptIndexWorkVisitor( TransactionalOperationExecutorSelector.INSTANCE, null );
executor.performOperation( work, shardingStrategy, context );
}
}