FileDocCategorySizeDatePackage
FieldsWriter.javaAPI DocApache Lucene 1.4.32068Tue Mar 30 00:48:02 BST 2004org.apache.lucene.index

FieldsWriter

public final class FieldsWriter extends Object
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.

Fields Summary
private FieldInfos
fieldInfos
private org.apache.lucene.store.OutputStream
fieldsStream
private org.apache.lucene.store.OutputStream
indexStream
Constructors Summary
FieldsWriter(Directory d, String segment, FieldInfos fn)

    fieldInfos = fn;
    fieldsStream = d.createFile(segment + ".fdt");
    indexStream = d.createFile(segment + ".fdx");
Methods Summary
final voidaddDocument(org.apache.lucene.document.Document doc)

    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());
      }
    }
final voidclose()

    fieldsStream.close();
    indexStream.close();