package org.csc.phynixx.common.io;
   
   /*
    * #%L
    * phynixx-common
    * %%
    * Copyright (C) 2014 Christoph Schmidt-Casdorff
    * %%
    * 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.
   * #L%
   */
  
  
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  /**
   * Created by Christoph Schmidt-Casdorff on 13.01.14.
   */
  public class LogRecordPageWriter {
  
      private static final byte[][] EMPTY_DATA = new byte[][]{};
  
      private final List<LogRecordWriter> logWriters = new ArrayList<LogRecordWriter>();
  
      /**
       * @return number of lines
       */
      public int size() {
          return logWriters.size();
      }
  
      public List<LogRecordWriter> getLogWriters() {
          return Collections.unmodifiableList(this.logWriters);
      }
  
      public LogRecordWriter newLine() {
          LogRecordWriter logRecordWriter = new LogRecordWriter();
          logWriters.add(logRecordWriter);
          return (logRecordWriter);
      }
  
  
      public byte[][] toByteByte() throws IOException {
          if (this.logWriters.isEmpty()) {
              return EMPTY_DATA;
          }
  
          byte[][] records = new byte[logWriters.size()][];
  
          for (int i = 0; i < logWriters.size(); i++) {
              records[i] = logWriters.get(i).toByteArray();
          }
          return records;
  
      }
  
  
  }