content: package org.apache.lucene.index;
  
  /**
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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.io.IOException;
  import org.apache.lucene.store.IndexOutput;
  import org.apache.lucene.store.DataOutput.ByteIndexInput;
  import org.apache.lucene.document.Fieldable;
  
  final class StoredFieldsWriterPerThread {
  
    final FieldsWriter localFieldsWriter;
    final StoredFieldsWriter storedFieldsWriter;
    final DocumentsWriter.DocState docState;
  
    StoredFieldsWriter.PerDoc doc;
  
    public StoredFieldsWriterPerThread(DocumentsWriter.DocState docState, StoredFieldsWriter storedFieldsWriter) throws IOException {
      this.storedFieldsWriter = storedFieldsWriter;
      this.docState = docState;
      localFieldsWriter = new FieldsWriter((IndexOutput) null, (IndexOutput) null, storedFieldsWriter.fieldInfos);
    }
  
    public void startDocument() {
      if (doc != null) {
        // Only happens if previous document hit non-aborting
        // exception while writing stored fields into
        // localFieldsWriter:
        doc.reset();
        doc.docID = docState.docID;
      }
    }
  
    public void addField(Fieldable field, FieldInfo fieldInfo) throws IOException {
      if (doc == null) {
        doc = storedFieldsWriter.getPerDoc();
        doc.docID = docState.docID;
        localFieldsWriter.setFieldsStream(doc.fdt);
        assert doc.numStoredFields == 0: "doc.numStoredFields=" + doc.numStoredFields;
        assert 0 == doc.fdt.length();
        assert 0 == doc.fdt.getFilePointer();
      }
  
      localFieldsWriter.writeField(fieldInfo, field);
      assert docState.testPoint("StoredFieldsWriterPerThread.processFields.writeField");
      doc.numStoredFields++;
    }
    
  
  
    public DocumentsWriter.DocWriter finishDocument() {
      // If there were any stored fields in this doc, doc will
      // be non-null; else it's null.
      try {
        return doc;
      } finally {
        doc = null;
      }
    }
  
    public void abort() {
      if (doc != null) {
        doc.abort();
        doc = null;
      }
    }
  }
  