package org.apache.lucene.index;
/**
* Copyright 2004 The Apache Software Foundation
*
* 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.
*/
import java.util.Enumeration;
import java.io.IOException;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.OutputStream;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
final class FieldsWriter {
private FieldInfos fieldInfos;
private OutputStream fieldsStream;
private OutputStream indexStream;
FieldsWriter(Directory d, String segment, FieldInfos fn)
throws IOException {
fieldInfos = fn;
fieldsStream = d.createFile(segment + ".fdt");
indexStream = d.createFile(segment + ".fdx");
}
final void close() throws IOException {
fieldsStream.close();
indexStream.close();
}
final void addDocument(Document doc) throws IOException {
indexStream.writeLong(fieldsStream.getFilePointer());
int storedCount = 0;
Enumeration fields = doc.fields();
while (fields.hasMoreElements()) {
Field field = (Field)fields.nextElement();
if (field.isStored())
storedCount++;
}
fieldsStream.writeVInt(storedCount);
fields = doc.fields();
while (fields.hasMoreElements()) {
Field field = (Field)fields.nextElement();
if (field.isStored()) {
fieldsStream.writeVInt(fieldInfos.fieldNumber(field.name()));
byte bits = 0;
if (field.isTokenized())
bits |= 1;
fieldsStream.writeByte(bits);
fieldsStream.writeString(field.stringValue());
}
}
}
}
|