/*
* 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.serialization.spi;
import java.io.Reader;
import java.io.Serializable;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.FieldType;
import org.apache.lucene.index.FieldInfo.IndexOptions;
import org.apache.lucene.util.BytesRef;
import org.hibernate.search.exception.AssertionFailure;
import org.hibernate.search.exception.SearchException;
import org.hibernate.search.indexes.serialization.impl.CopyTokenStream;
import org.hibernate.search.indexes.serialization.impl.SerializationHelper;
/**
* @author Emmanuel Bernard <emmanuel@hibernate.org>
*/
public final class LuceneFieldContext {
private final Field field;
private final FieldType fieldType;
public LuceneFieldContext(Field field) {
this.field = field;
fieldType = field.fieldType();
}
public String getName() {
return field.name();
}
public SerializableStore getStore() {
return fieldType.stored() ? SerializableStore.YES : SerializableStore.NO;
}
public SerializableIndex getIndex() {
Field.Index index = Field.Index.toIndex( fieldType.indexed(), fieldType.tokenized(), fieldType.omitNorms() );
switch ( index ) {
case ANALYZED:
return SerializableIndex.ANALYZED;
case ANALYZED_NO_NORMS:
return SerializableIndex.ANALYZED_NO_NORMS;
case NO:
return SerializableIndex.NO;
case NOT_ANALYZED:
return SerializableIndex.NOT_ANALYZED;
case NOT_ANALYZED_NO_NORMS:
return SerializableIndex.NOT_ANALYZED_NO_NORMS;
default:
throw new SearchException( "Unable to convert Field.Index value into serializable Index: " + index);
}
}
public SerializableTermVector getTermVector() {
Field.TermVector vector = Field.TermVector.toTermVector( fieldType.storeTermVectors(), fieldType.storeTermVectorOffsets(), fieldType.storeTermVectorPositions() );
switch ( vector ) {
case NO:
return SerializableTermVector.NO;
case WITH_OFFSETS:
return SerializableTermVector.WITH_OFFSETS;
case WITH_POSITIONS:
return SerializableTermVector.WITH_POSITIONS;
case WITH_POSITIONS_OFFSETS:
return SerializableTermVector.WITH_POSITIONS_OFFSETS;
case YES:
return SerializableTermVector.YES;
default:
throw new SearchException( "Unable to convert Field.TermVector value into serializable TermVector: " + vector);
}
}
public float getBoost() {
return field.boost();
}
public boolean isOmitNorms() {
return fieldType.omitNorms();
}
public boolean isOmitTermFreqAndPositions() {
return fieldType.indexOptions() == IndexOptions.DOCS_ONLY;
}
public String getStringValue() {
return field.stringValue();
}
public byte[] getReaderValue() {
Reader reader = field.readerValue();
if ( reader instanceof Serializable ) {
return SerializationHelper.toByteArray( (Serializable) reader );
}
else {
throw new AssertionFailure( "Should not call getReaderValue for a non Serializable Reader" );
}
}
public SerializableTokenStream getTokenStream() {
return CopyTokenStream.buildSerializableTokenStream( field.tokenStreamValue() );
}
public BytesRef getBinaryValue() {
return field.binaryValue();
}
}