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Core of the Object/Lucene mapper, query engine and index management
/*
* 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 .
*/
package org.hibernate.search.engine.spi;
import java.io.Serializable;
import java.util.Collection;
import java.util.Collections;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.IndexableField;
import org.hibernate.search.bridge.builtin.NumericEncodingCalendarBridge;
import org.hibernate.search.bridge.builtin.NumericEncodingDateBridge;
import org.hibernate.search.bridge.builtin.NumericFieldBridge;
import org.hibernate.search.bridge.builtin.StringEncodingDateBridge;
import org.hibernate.search.exception.AssertionFailure;
import org.hibernate.annotations.common.reflection.ReflectionManager;
import org.hibernate.annotations.common.reflection.XClass;
import org.hibernate.annotations.common.reflection.XMember;
import org.hibernate.search.engine.ProjectionConstants;
import org.hibernate.search.exception.SearchException;
import org.hibernate.search.analyzer.Discriminator;
import org.hibernate.search.annotations.CacheFromIndex;
import org.hibernate.search.annotations.ProvidedId;
import org.hibernate.search.annotations.Store;
import org.hibernate.search.backend.AddLuceneWork;
import org.hibernate.search.backend.DeleteLuceneWork;
import org.hibernate.search.backend.LuceneWork;
import org.hibernate.search.backend.UpdateLuceneWork;
import org.hibernate.search.bridge.FieldBridge;
import org.hibernate.search.bridge.LuceneOptions;
import org.hibernate.search.bridge.StringBridge;
import org.hibernate.search.bridge.TwoWayFieldBridge;
import org.hibernate.search.bridge.TwoWayStringBridge;
import org.hibernate.search.bridge.builtin.impl.TwoWayString2FieldBridgeAdaptor;
import org.hibernate.search.bridge.spi.ConversionContext;
import org.hibernate.search.engine.impl.ConfigContext;
import org.hibernate.search.engine.impl.LuceneOptionsImpl;
import org.hibernate.search.engine.metadata.impl.DocumentFieldMetadata;
import org.hibernate.search.engine.metadata.impl.EmbeddedTypeMetadata;
import org.hibernate.search.engine.metadata.impl.PropertyMetadata;
import org.hibernate.search.engine.metadata.impl.TypeMetadata;
import org.hibernate.search.query.collector.impl.FieldCacheCollectorFactory;
import org.hibernate.search.query.fieldcache.impl.ClassLoadingStrategySelector;
import org.hibernate.search.query.fieldcache.impl.FieldCacheLoadingType;
import org.hibernate.search.spi.InstanceInitializer;
import org.hibernate.search.util.impl.ReflectionHelper;
import org.hibernate.search.util.logging.impl.Log;
import org.hibernate.search.util.logging.impl.LoggerFactory;
/**
* Set up and provide a manager for classes which are directly annotated with {@code @Indexed}.
*
* @author Gavin King
* @author Emmanuel Bernard
* @author Sylvain Vieujot
* @author Richard Hallier
* @author Hardy Ferentschik
*/
public class DocumentBuilderIndexedEntity extends AbstractDocumentBuilder {
private static final Log log = LoggerFactory.make();
private static final LuceneOptions NULL_EMBEDDED_MARKER_OPTIONS;
static {
DocumentFieldMetadata fieldMetadata =
new DocumentFieldMetadata.Builder(
null,
Store.NO,
Field.Index.NOT_ANALYZED_NO_NORMS,
Field.TermVector.NO
)
.boost( 1F )
.build();
NULL_EMBEDDED_MARKER_OPTIONS = new LuceneOptionsImpl( fieldMetadata, 1f, 1f );
}
/**
* Flag indicating whether {@link org.apache.lucene.search.IndexSearcher#doc(int, org.apache.lucene.index.StoredFieldVisitor)}
* can be used in order to retrieve documents. This is only safe to do if we know that
* all involved bridges are implementing TwoWayStringBridge. See HSEARCH-213.
*/
private boolean allowFieldSelectionInProjection = false;
/**
* Flag indicating whether there is an explicit id (@DocumentId or @Id) or not. When Search is used as make
* for example using JBoss Cache Searchable the idKeywordName will be provided.
*/
private boolean idProvided;
/**
* Type of allowed FieldCache usage
*/
private final Set fieldCacheUsage;
private final String identifierName;
/**
* Which strategy to use to load values from the FieldCache
*/
private final FieldCacheCollectorFactory idFieldCacheCollectorFactory;
/**
* The document field name of the document id
*/
private final String idFieldName;
/**
* The property metadata for the document id (not that in the case of a provided id the id getter can be {@code null}.
*/
private PropertyMetadata idPropertyMetadata;
/**
* Creates a document builder for entities annotated with @Indexed.
*
* @param clazz The class for which to build a DocumentBuilderContainedEntity
* @param context Handle to default configuration settings
* @param reflectionManager Reflection manager to use for processing the annotations
* @param optimizationBlackList mutable register, keeps track of types on which we need to disable collection events optimizations
* @param instanceInitializer helper class for class object graph navigation
*/
public DocumentBuilderIndexedEntity(XClass clazz, TypeMetadata typeMetadata, ConfigContext context,
ReflectionManager reflectionManager, Set optimizationBlackList, InstanceInitializer instanceInitializer) {
super( clazz, typeMetadata, reflectionManager, optimizationBlackList, instanceInitializer );
ProvidedId providedIdAnnotation = findProvidedId( clazz, reflectionManager );
if ( providedIdAnnotation != null || context.isProvidedIdImplicit() ) {
idProvided = true;
}
if ( idPropertyMetadata == null ) {
idPropertyMetadata = getTypeMetadata().getIdPropertyMetadata();
}
if ( idPropertyMetadata == null ) {
throw log.noDocumentIdFoundException( clazz.getName() );
}
idFieldName = idPropertyMetadata.getFieldMetadata().iterator().next().getName();
CacheFromIndex fieldCacheOptions = clazz.getAnnotation( CacheFromIndex.class );
if ( fieldCacheOptions == null ) {
this.fieldCacheUsage = Collections.unmodifiableSet( EnumSet.of( org.hibernate.search.annotations.FieldCacheType.CLASS ) );
}
else {
EnumSet enabledTypes = EnumSet.noneOf( org.hibernate.search.annotations.FieldCacheType.class );
Collections.addAll( enabledTypes, fieldCacheOptions.value() );
if ( enabledTypes.size() != 1 && enabledTypes.contains( org.hibernate.search.annotations.FieldCacheType.NOTHING ) ) {
throw new SearchException(
"CacheFromIndex configured with conflicting parameters:" +
" if FieldCacheType.NOTHING is enabled, no other options can be added"
);
}
this.fieldCacheUsage = Collections.unmodifiableSet( enabledTypes );
}
checkAllowFieldSelection();
idFieldCacheCollectorFactory = figureIdFieldCacheUsage();
if ( log.isDebugEnabled() ) {
log.debugf(
"Field selection in projections is set to %b for entity %s.",
allowFieldSelectionInProjection,
clazz
);
}
this.entityState = EntityState.INDEXED;
this.identifierName = idProvided ? null : idPropertyMetadata.getPropertyAccessor().getName();
}
private FieldCacheCollectorFactory figureIdFieldCacheUsage() {
if ( this.fieldCacheUsage.contains( org.hibernate.search.annotations.FieldCacheType.ID ) ) {
FieldCacheLoadingType collectorTypeForId = ClassLoadingStrategySelector.guessAppropriateCollectorType(
getIdBridge()
);
if ( collectorTypeForId == null ) {
log.cannotExtractValueForIdentifier( getBeanClass() );
return null;
}
TwoWayStringBridge twoWayIdStringBridge = ClassLoadingStrategySelector.getTwoWayStringBridge( getIdBridge() );
return new FieldCacheCollectorFactory( getIdKeywordName(), collectorTypeForId, twoWayIdStringBridge );
}
return null;
}
public XMember getIdGetter() {
return idPropertyMetadata.getPropertyAccessor();
}
public FieldCacheCollectorFactory getIdFieldCacheCollectionFactory() {
return idFieldCacheCollectorFactory;
}
private ProvidedId findProvidedId(XClass clazz, ReflectionManager reflectionManager) {
ProvidedId id = null;
XClass currentClass = clazz;
while ( id == null && ( !reflectionManager.equals( currentClass, Object.class ) ) ) {
id = currentClass.getAnnotation( ProvidedId.class );
currentClass = currentClass.getSuperclass();
}
return id;
}
@Override
public void addWorkToQueue(Class entityClass, Object entity, Serializable id, boolean delete, boolean add, List queue, ConversionContext contextualBridge) {
DocumentFieldMetadata idFieldMetadata = idPropertyMetadata.getFieldMetadata( idFieldName );
String idInString = objectToString( getIdBridge(), idFieldMetadata.getName(), id, contextualBridge );
if ( delete && !add ) {
queue.add( new DeleteLuceneWork( id, idInString, entityClass ) );
}
else if ( add && !delete ) {
queue.add(
createAddWork(
entityClass,
entity,
id,
idInString,
getInstanceInitializer(),
contextualBridge
)
);
}
else if ( add && delete ) {
queue.add(
createUpdateWork(
entityClass,
entity,
id,
idInString,
getInstanceInitializer(),
contextualBridge
)
);
}
}
private String objectToString(TwoWayFieldBridge bridge, String fieldName, Object value, ConversionContext conversionContext) {
conversionContext.pushProperty( fieldName );
String stringValue;
try {
stringValue = conversionContext
.setClass( getBeanClass() )
.twoWayConversionContext( bridge )
.objectToString( value );
}
finally {
conversionContext.popProperty();
}
return stringValue;
}
private String objectToString(StringBridge bridge, String fieldName, Object value, ConversionContext conversionContext) {
conversionContext.pushProperty( fieldName );
String stringValue;
try {
stringValue = conversionContext
.setClass( getBeanClass() )
.stringConversionContext( bridge )
.objectToString( value );
}
finally {
conversionContext.popProperty();
}
return stringValue;
}
public AddLuceneWork createAddWork(Class entityClass, Object entity, Serializable id, String idInString, InstanceInitializer sessionInitializer, ConversionContext conversionContext) {
Map fieldToAnalyzerMap = new HashMap();
Document doc = getDocument( entity, id, fieldToAnalyzerMap, sessionInitializer, conversionContext, null );
final AddLuceneWork addWork;
if ( fieldToAnalyzerMap.isEmpty() ) {
addWork = new AddLuceneWork( id, idInString, entityClass, doc );
}
else {
addWork = new AddLuceneWork( id, idInString, entityClass, doc, fieldToAnalyzerMap );
}
return addWork;
}
public UpdateLuceneWork createUpdateWork(Class entityClass, Object entity, Serializable id, String idInString, InstanceInitializer sessionInitializer, ConversionContext contextualBridge) {
Map fieldToAnalyzerMap = new HashMap();
Document doc = getDocument( entity, id, fieldToAnalyzerMap, sessionInitializer, contextualBridge, null );
final UpdateLuceneWork addWork;
if ( fieldToAnalyzerMap.isEmpty() ) {
addWork = new UpdateLuceneWork( id, idInString, entityClass, doc );
}
else {
addWork = new UpdateLuceneWork( id, idInString, entityClass, doc, fieldToAnalyzerMap );
}
return addWork;
}
/**
* Builds the Lucene Document for a given entity instance and its id.
*
* @param instance The entity for which to build the matching Lucene Document
* @param id the entity id.
* @param fieldToAnalyzerMap this maps gets populated while generating the Document.
* It allows to specify for any document field a named analyzer to use. This parameter cannot be null.
* @param objectInitializer used to ensure that all objects are initalized
* @param conversionContext a {@link org.hibernate.search.bridge.spi.ConversionContext} object.
* @param includedFieldNames list of field names to consider. Others can be excluded. Null if all fields are considered.
*
* @return The Lucene Document for the specified entity.
*/
public Document getDocument(Object instance, Serializable id, Map fieldToAnalyzerMap, InstanceInitializer objectInitializer, ConversionContext conversionContext, String[] includedFieldNames) {
// TODO as it is, includedFieldNames is not generally useful as we don't know if a fieldbridge creates specific fields or not
// TODO only used at the moment to filter the id field and the class field
if ( fieldToAnalyzerMap == null ) {
throw new IllegalArgumentException( "fieldToAnalyzerMap cannot be null" );
}
//sensible default for outside callers
if ( objectInitializer == null ) {
objectInitializer = getInstanceInitializer();
}
Document doc = new Document();
final Class entityType = objectInitializer.getClass( instance );
final float documentLevelBoost = getMetadata().getClassBoost( instance );
// add the class name of the entity to the document
if ( containsFieldName( ProjectionConstants.OBJECT_CLASS, includedFieldNames ) ) {
Field classField =
new Field(
ProjectionConstants.OBJECT_CLASS,
entityType.getName(),
Field.Store.YES,
Field.Index.NOT_ANALYZED_NO_NORMS,
Field.TermVector.NO
);
doc.add( classField );
}
// now add the entity id to the document
if ( containsFieldName( idFieldName, includedFieldNames ) ) {
DocumentFieldMetadata idFieldMetaData = idPropertyMetadata.getFieldMetadata( idFieldName );
LuceneOptions luceneOptions = new LuceneOptionsImpl( idFieldMetaData, idFieldMetaData.getBoost(), documentLevelBoost );
final FieldBridge contextualizedBridge = conversionContext.oneWayConversionContext( getIdBridge() );
conversionContext.setClass( entityType );
conversionContext.pushProperty( idFieldMetaData.getName() );
try {
contextualizedBridge.set( idFieldMetaData.getName(), id, doc, luceneOptions );
}
finally {
conversionContext.popProperty();
}
}
// finally add all other document fields
Set processedFieldNames = new HashSet();
buildDocumentFields(
instance,
doc,
getMetadata(),
fieldToAnalyzerMap,
processedFieldNames,
conversionContext,
objectInitializer,
documentLevelBoost
);
return doc;
}
private void buildDocumentFields(Object instance,
Document doc,
TypeMetadata typeMetadata,
Map fieldToAnalyzerMap,
Set processedFieldNames,
ConversionContext conversionContext,
InstanceInitializer objectInitializer,
final float documentBoost) {
// needed for field access: I cannot work in the proxied version
Object unproxiedInstance = unproxy( instance, objectInitializer );
// process the class bridges
for ( DocumentFieldMetadata fieldMetadata : typeMetadata.getClassBridgeMetadata() ) {
FieldBridge fieldBridge = fieldMetadata.getFieldBridge();
final String fieldName = fieldMetadata.getName();
final FieldBridge oneWayConversionContext = conversionContext.oneWayConversionContext( fieldBridge );
conversionContext.pushProperty( fieldName );
try {
oneWayConversionContext.set(
fieldName,
unproxiedInstance,
doc,
typeMetadata.getClassLuceneOptions( fieldMetadata, documentBoost )
);
}
finally {
conversionContext.popProperty();
}
}
// process the indexed fields
XMember previousMember = null;
Object currentFieldValue = null;
for ( PropertyMetadata propertyMetadata : typeMetadata.getAllPropertyMetadata() ) {
XMember member = propertyMetadata.getPropertyAccessor();
if ( previousMember != member ) {
currentFieldValue = unproxy(
ReflectionHelper.getMemberValue( unproxiedInstance, member ),
objectInitializer
);
previousMember = member;
if ( member.isCollection() ) {
if ( currentFieldValue instanceof Collection ) {
objectInitializer.initializeCollection( (Collection) currentFieldValue );
}
else if ( currentFieldValue instanceof Map ) {
objectInitializer.initializeMap( (Map) currentFieldValue );
}
}
}
try {
conversionContext.pushProperty( propertyMetadata.getPropertyAccessorName() );
for ( DocumentFieldMetadata fieldMetadata : propertyMetadata.getFieldMetadata() ) {
final FieldBridge fieldBridge = fieldMetadata.getFieldBridge();
final String fieldName = fieldMetadata.getName();
final FieldBridge oneWayConversionContext = conversionContext.oneWayConversionContext( fieldBridge );
oneWayConversionContext.set(
fieldName,
currentFieldValue,
doc,
typeMetadata.getFieldLuceneOptions( propertyMetadata, fieldMetadata, currentFieldValue, documentBoost )
);
}
}
finally {
conversionContext.popProperty();
}
}
// allow analyzer override for the fields added by the class and field bridges
allowAnalyzerDiscriminatorOverride(
doc, typeMetadata, fieldToAnalyzerMap, processedFieldNames, unproxiedInstance
);
// recursively process embedded objects
for ( EmbeddedTypeMetadata embeddedTypeMetadata : typeMetadata.getEmbeddedTypeMetadata() ) {
XMember member = embeddedTypeMetadata.getEmbeddedGetter();
conversionContext.pushProperty( embeddedTypeMetadata.getEmbeddedFieldName() );
try {
Object value = ReflectionHelper.getMemberValue( unproxiedInstance, member );
//TODO handle boost at embedded level: already stored in propertiesMedatada.boost
if ( value == null ) {
processEmbeddedNullValue( doc, embeddedTypeMetadata, conversionContext );
continue;
}
switch ( embeddedTypeMetadata.getEmbeddedContainer() ) {
case ARRAY:
Object[] array = objectInitializer.initializeArray( (Object[]) value );
for ( Object arrayValue : array ) {
buildDocumentFields(
arrayValue,
doc,
embeddedTypeMetadata,
fieldToAnalyzerMap,
processedFieldNames,
conversionContext,
objectInitializer,
documentBoost
);
}
break;
case COLLECTION:
Collection collection = objectInitializer.initializeCollection( (Collection) value );
for ( Object collectionValue : collection ) {
buildDocumentFields(
collectionValue,
doc,
embeddedTypeMetadata,
fieldToAnalyzerMap,
processedFieldNames,
conversionContext,
objectInitializer,
documentBoost
);
}
break;
case MAP:
Map map = objectInitializer.initializeMap( (Map) value );
for ( Object collectionValue : map.values() ) {
buildDocumentFields(
collectionValue,
doc,
embeddedTypeMetadata,
fieldToAnalyzerMap,
processedFieldNames,
conversionContext,
objectInitializer,
documentBoost
);
}
break;
case OBJECT:
buildDocumentFields(
value,
doc,
embeddedTypeMetadata,
fieldToAnalyzerMap,
processedFieldNames,
conversionContext,
objectInitializer,
documentBoost
);
break;
default:
throw new AssertionFailure(
"Unknown embedded container: "
+ embeddedTypeMetadata.getEmbeddedContainer()
);
}
}
finally {
conversionContext.popProperty();
}
}
}
/**
* Check if a given value is present in an array.
*
* A array {@code null} contains all possible values.
* Otherwise, a value {@code null} is always considered non present.
* The last behavior is not currently used, it is merely an optimization.
*/
private boolean containsFieldName(String value, String[] array) {
//null array means contains all possible values
if ( array == null ) {
return true;
}
//null value is meaningless
if ( value == null ) {
return false;
}
for ( String containedValue : array ) {
if ( value.equals( containedValue ) ) {
return true;
}
}
return false;
}
private void processEmbeddedNullValue(Document doc, EmbeddedTypeMetadata embeddedTypeMetadata, ConversionContext conversionContext) {
final String nullMarker = embeddedTypeMetadata.getEmbeddedNullToken();
if ( nullMarker != null ) {
String fieldName = embeddedTypeMetadata.getEmbeddedNullFieldName();
FieldBridge fieldBridge = embeddedTypeMetadata.getEmbeddedNullFieldBridge();
final FieldBridge contextualizedBridge = conversionContext.oneWayConversionContext( fieldBridge );
conversionContext.pushProperty( fieldName );
try {
contextualizedBridge.set( fieldName, null, doc, NULL_EMBEDDED_MARKER_OPTIONS );
}
finally {
conversionContext.popProperty();
}
}
}
private Object unproxy(Object instance, InstanceInitializer objectInitializer) {
if ( instance == null ) {
return null;
}
return objectInitializer.unproxy( instance );
}
/**
* Allows a analyzer discriminator to override the analyzer used for any field in the Lucene document.
*
* @param doc The Lucene Document which shall be indexed.
* @param typeMetadata The metadata for the entity we currently add to the document.
* @param fieldToAnalyzerMap This map contains the actual override data. It is a map between document fields names and
* analyzer definition names. This map will be added to the Work instance and processed at actual indexing time.
* @param processedFieldNames A list of field names we have already processed.
* @param unproxiedInstance The entity we currently "add" to the document.
*/
private void allowAnalyzerDiscriminatorOverride(Document doc,
TypeMetadata typeMetadata,
Map fieldToAnalyzerMap,
Set processedFieldNames,
Object unproxiedInstance) {
Discriminator discriminator = typeMetadata.getDiscriminator();
if ( discriminator == null ) {
return;
}
Object value = null;
if ( typeMetadata.getDiscriminatorGetter() != null ) {
value = ReflectionHelper.getMemberValue( unproxiedInstance, typeMetadata.getDiscriminatorGetter() );
}
// now we give the discriminator the opportunity to specify a analyzer per field level
for ( IndexableField field : doc.getFields() ) {
if ( !processedFieldNames.contains( field.name() ) ) {
String analyzerName = discriminator.getAnalyzerDefinitionName( value, unproxiedInstance, field.name() );
if ( analyzerName != null ) {
fieldToAnalyzerMap.put( field.name(), analyzerName );
}
processedFieldNames.add( field.name() );
}
}
}
public String getIdentifierName() {
return identifierName;
}
public boolean allowFieldSelectionInProjection() {
return allowFieldSelectionInProjection;
}
public Set getFieldCacheOption() {
return fieldCacheUsage;
}
public TwoWayFieldBridge getIdBridge() {
return (TwoWayFieldBridge) idPropertyMetadata.getFieldMetadata( idFieldName ).getFieldBridge();
}
public String getIdKeywordName() {
return idPropertyMetadata.getFieldMetadata( idFieldName ).getName();
}
/**
* Return the id used for indexing if possible
* An IllegalStateException otherwise
*
* If the id is provided, we can't extract it from the entity
*/
@Override
public Serializable getId(Object entity) {
if ( entity == null || idPropertyMetadata.getPropertyAccessorName() == null || idProvided ) {
throw new IllegalStateException( "Cannot guess id from entity" );
}
Object unproxiedEntity = getInstanceInitializer().unproxy( entity );
return (Serializable) ReflectionHelper.getMemberValue(
unproxiedEntity,
idPropertyMetadata.getPropertyAccessor()
);
}
public String objectToString(String fieldName, Object value, ConversionContext conversionContext) {
if ( fieldName == null ) {
throw new AssertionFailure( "Field name should not be null" );
}
final DocumentFieldMetadata idFieldMetaData = idPropertyMetadata.getFieldMetadata( idFieldName );
final FieldBridge bridge = fieldName.equals( idFieldMetaData.getName() ) ?
getIdBridge() :
getBridge( getMetadata(), fieldName );
if ( bridge != null ) {
return objectToString( fieldName, bridge, value, conversionContext );
}
throw new SearchException( "Unable to find field " + fieldName + " in " + getBeanXClass() );
}
public String objectToString(String fieldName, FieldBridge bridge, Object value, ConversionContext conversionContext) {
if ( fieldName == null ) {
throw new AssertionFailure( "Field name should not be null" );
}
if ( bridge == null ) {
throw new AssertionFailure( "Field bridge should not be null" );
}
final Class bridgeClass = bridge.getClass();
if ( TwoWayFieldBridge.class.isAssignableFrom( bridgeClass ) ) {
return objectToString( (TwoWayFieldBridge) bridge, fieldName, value, conversionContext );
}
else if ( StringBridge.class.isAssignableFrom( bridgeClass ) ) {
return objectToString( (StringBridge) bridge, fieldName, value, conversionContext );
}
else {
throw log.fieldBridgeNotTwoWay( bridgeClass, fieldName, getBeanXClass() );
}
}
private FieldBridge getNullBridge(EmbeddedTypeMetadata embeddedTypeMetadata, String fieldName) {
if ( fieldName.equals( embeddedTypeMetadata.getEmbeddedNullFieldName() ) ) {
return embeddedTypeMetadata.getEmbeddedNullFieldBridge();
}
else {
return null;
}
}
public FieldBridge getBridge(String fieldName) {
return getBridge( getMetadata(), fieldName );
}
private FieldBridge getBridge(TypeMetadata typeMetadata, String fieldName) {
// process base fields
DocumentFieldMetadata documentFieldMetadata = typeMetadata.getDocumentFieldMetadataFor( fieldName );
if ( documentFieldMetadata != null && documentFieldMetadata.getFieldBridge() != null ) {
return documentFieldMetadata.getFieldBridge();
}
// process embedded fields
FieldBridge fieldBridge;
for ( EmbeddedTypeMetadata embeddedTypeMetadata : typeMetadata.getEmbeddedTypeMetadata() ) {
fieldBridge = getBridge( embeddedTypeMetadata, fieldName );
if ( fieldBridge != null ) {
return fieldBridge;
}
}
// process null embedded fields
for ( EmbeddedTypeMetadata embeddedTypeMetadata : typeMetadata.getEmbeddedTypeMetadata() ) {
fieldBridge = getNullBridge( embeddedTypeMetadata, fieldName );
if ( fieldBridge != null ) {
return fieldBridge;
}
}
//process class bridges
DocumentFieldMetadata fieldMetadata = typeMetadata.getFieldMetadataForClassBridgeField( fieldName );
fieldBridge = fieldMetadata == null ? null : fieldMetadata.getFieldBridge();
return fieldBridge;
}
/**
* Checks whether all involved bridges allow to optimize document retrieval by using
* {@code FieldSelector} (see HSEARCH-213).
*/
private void checkAllowFieldSelection() {
allowFieldSelectionInProjection = true;
if ( fieldBridgeProhibitsFieldSelectionInProjection( getIdBridge() ) ) {
allowFieldSelectionInProjection = false;
return;
}
for ( PropertyMetadata propertyMetadata : getMetadata().getAllPropertyMetadata() ) {
for ( DocumentFieldMetadata documentFieldMetadata : propertyMetadata.getFieldMetadata() ) {
FieldBridge bridge = documentFieldMetadata.getFieldBridge();
if ( fieldBridgeProhibitsFieldSelectionInProjection( bridge ) ) {
allowFieldSelectionInProjection = false;
return;
}
}
}
for ( DocumentFieldMetadata fieldMetadata : getMetadata().getClassBridgeMetadata() ) {
FieldBridge bridge = fieldMetadata.getFieldBridge();
if ( fieldBridgeProhibitsFieldSelectionInProjection( bridge ) ) {
allowFieldSelectionInProjection = false;
return;
}
}
}
private boolean fieldBridgeProhibitsFieldSelectionInProjection(FieldBridge bridge) {
return !( bridge instanceof TwoWayStringBridge
|| bridge instanceof TwoWayString2FieldBridgeAdaptor
|| bridge instanceof NumericFieldBridge
|| bridge instanceof NumericEncodingCalendarBridge
|| bridge instanceof NumericEncodingDateBridge
|| bridge instanceof StringEncodingDateBridge );
}
/**
* To be removed, see org.hibernate.search.engine.DocumentBuilderIndexedEntity.isIdMatchingJpaId()
*/
@Override
public boolean requiresProvidedId() {
return this.idProvided;
}
/**
* FIXME remove the need for such a method, we should always be able to rely on Work.id,
* but to respect @DocumentId which is being processed in the DocumentBuilder currently
* finding out which id we need is tricky, and requires helpers method like this one.
*/
@Override
public boolean isIdMatchingJpaId() {
return ( !idProvided && getTypeMetadata().isJpaIdUsedAsDocumentId() );
}
}
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