/*
* 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.indexes.impl;
import java.util.Properties;
import org.hibernate.search.cfg.Environment;
import org.hibernate.search.exception.SearchException;
import org.hibernate.search.backend.spi.LuceneIndexingParameters;
import org.hibernate.search.util.impl.Executors;
import org.hibernate.search.engine.service.spi.ServiceManager;
import org.hibernate.search.indexes.spi.DirectoryBasedReaderProvider;
import org.hibernate.search.indexes.spi.IndexManager;
import org.hibernate.search.spi.WorkerBuildContext;
import org.hibernate.search.store.optimization.OptimizerStrategy;
import org.hibernate.search.store.optimization.impl.ExplicitOnlyOptimizerStrategy;
import org.hibernate.search.store.optimization.impl.IncrementalOptimizerStrategy;
import org.hibernate.search.util.StringHelper;
import org.hibernate.search.util.configuration.impl.ConfigurationParseHelper;
import org.hibernate.search.util.configuration.impl.MaskedProperty;
import org.hibernate.search.util.impl.ClassLoaderHelper;
/**
* Contains helper to parse properties which should be read by the majority
* of IndexManager implementations.
*
* @author Sanne Grinovero <sanne@hibernate.org> (C) 2011 Red Hat Inc.
*/
public class PropertiesParseHelper {
private PropertiesParseHelper() {
// no need to create instances
}
/**
* <p>isExclusiveIndexUsageEnabled.</p>
*
* @param indexProps a {@link java.util.Properties} object.
*/
public static boolean isExclusiveIndexUsageEnabled(Properties indexProps) {
return ConfigurationParseHelper.getBooleanValue( indexProps, Environment.EXCLUSIVE_INDEX_USE, true );
}
/**
* Returns the configured value of {@link org.hibernate.search.cfg.Environment#INDEX_METADATA_COMPLETE} for this specific index.
* If no value is set, the default is defined by {@link org.hibernate.search.cfg.spi.SearchConfiguration#isIndexMetadataComplete()}.
*
* @param indexProps The index configuration properties
* @param context The WorkerBuildContext provides a view of the default setting
*
* @return {@code true} when the index metadata is fully defined.
*/
public static boolean isIndexMetadataComplete(Properties indexProps, WorkerBuildContext context) {
return ConfigurationParseHelper.getBooleanValue(
indexProps,
Environment.INDEX_METADATA_COMPLETE,
context.isIndexMetadataComplete()
);
}
/**
* @param indexName the index name (used for logging)
* @param indexProps MaskedProperties for this IndexManager
*
* @return the maximum queue length to be used on the backends of this index
*/
public static int extractMaxQueueSize(String indexName, Properties indexProps) {
String maxQueueSize = indexProps.getProperty( Environment.MAX_QUEUE_LENGTH );
if ( maxQueueSize != null ) {
int parsedInt = ConfigurationParseHelper
.parseInt(
maxQueueSize, Executors.QUEUE_MAX_LENGTH,
"Illegal value for property " + Environment.MAX_QUEUE_LENGTH + " on index " + indexName
);
if ( parsedInt < 1 ) {
throw new SearchException(
"Property " + Environment.MAX_QUEUE_LENGTH + " on index "
+ indexName + "must be strictly positive"
);
}
return parsedInt;
}
else {
return Executors.QUEUE_MAX_LENGTH;
}
}
public static OptimizerStrategy getOptimizerStrategy(IndexManager callback,
Properties indexProperties,
WorkerBuildContext buildContext) {
MaskedProperty maskedProperty = new MaskedProperty( indexProperties, "optimizer" );
String optimizerImplClassName = maskedProperty.getProperty( "implementation" );
if ( optimizerImplClassName != null && ( !"default".equalsIgnoreCase( optimizerImplClassName ) ) ) {
ServiceManager serviceManager = buildContext.getServiceManager();
return ClassLoaderHelper.instanceFromName(
OptimizerStrategy.class,
optimizerImplClassName,
"Optimizer Strategy",
serviceManager
);
}
else {
boolean incremental = maskedProperty.containsKey( "operation_limit.max" )
|| maskedProperty.containsKey( "transaction_limit.max" );
OptimizerStrategy optimizerStrategy;
if ( incremental ) {
optimizerStrategy = new IncrementalOptimizerStrategy();
optimizerStrategy.initialize( callback, maskedProperty );
}
else {
optimizerStrategy = new ExplicitOnlyOptimizerStrategy();
}
return optimizerStrategy;
}
}
/**
* Creates a new <code>LuceneIndexingParameters</code> instance for the specified provider.
* If there are no matching properties in the configuration default values will be applied.
* <p>
* NOTE:</br>
* If a non batch value is set in the configuration apply it also to the
* batch mode. This covers the case where users only specify
* parameters for the non batch mode. In this case the same parameters apply for
* batch indexing. Parameters are found "depth-first": if a batch parameter is set
* in a global scope it will take priority on local transaction parameters.
* </p>
*
* @param properties The properties extracted from the configuration.
*/
public static LuceneIndexingParameters extractIndexingPerformanceOptions(Properties properties) {
return new LuceneIndexingParameters( properties );
}
public static DirectoryBasedReaderProvider createDirectoryBasedReaderProvider(DirectoryBasedIndexManager indexManager,
Properties properties,
WorkerBuildContext buildContext) {
Properties maskedProperties = new MaskedProperty( properties, Environment.READER_PREFIX );
String readerProviderImplName = maskedProperties.getProperty( "strategy" );
DirectoryBasedReaderProvider readerProvider;
if ( StringHelper.isEmpty( readerProviderImplName ) ) {
readerProvider = new SharingBufferReaderProvider();
}
else if ( "not-shared".equalsIgnoreCase( readerProviderImplName ) ) {
readerProvider = new NotSharedReaderProvider();
}
else if ( "shared".equalsIgnoreCase( readerProviderImplName ) ) {
readerProvider = new SharingBufferReaderProvider();
}
else {
ServiceManager serviceManager = buildContext.getServiceManager();
readerProvider = ClassLoaderHelper.instanceFromName(
DirectoryBasedReaderProvider.class,
readerProviderImplName,
"readerProvider",
serviceManager
);
}
readerProvider.initialize( indexManager, maskedProperties );
return readerProvider;
}
}