content: /**
   * 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.
   */
  
  package org.apache.solr.schema;
  
  import org.apache.solr.response.TextResponseWriter;
  import org.apache.solr.response.XMLWriter;
  import org.apache.solr.common.util.Base64;
  import org.apache.lucene.document.Fieldable;
  import org.apache.lucene.document.Field;
  import org.apache.lucene.search.SortField;
  
  import java.io.IOException;
  import java.nio.ByteBuffer;
  
  
  public class BinaryField extends FieldType  {
  
    @Override
    public void write(XMLWriter xmlWriter, String name, Fieldable f) throws IOException {
      xmlWriter.writeStr( name, toBase64String(toObject(f)) );
    }
  
    private String  toBase64String(ByteBuffer buf) {
      return Base64.byteArrayToBase64(buf.array(), buf.position(), buf.limit()-buf.position());
    }
  
    @Override
    public void write(TextResponseWriter writer, String name, Fieldable f) throws IOException {
      writer.writeStr(name, toBase64String(toObject(f)), false);
    }
  
    @Override
    public SortField getSortField(SchemaField field, boolean top) {
      throw new RuntimeException("Cannot sort on a Binary field");
    }
  
  
    @Override
    public String toExternal(Fieldable f) {
      return toBase64String(toObject(f));
    }
    
    @Override
    public ByteBuffer toObject(Fieldable f) {
      return  ByteBuffer.wrap(f.getBinaryValue(), f.getBinaryOffset(), f.getBinaryLength() ) ;
    }
  
    public Field createField(SchemaField field, Object val, float boost) {
      if (val == null) return null;
      if (!field.stored()) {
        log.trace("Ignoring unstored binary field: " + field);
        return null;
      }
      byte[] buf = null;
      int offset = 0, len = 0;
      if (val instanceof byte[]) {
        buf = (byte[]) val;
        len = buf.length;
      } else if (val instanceof ByteBuffer && ((ByteBuffer)val).hasArray()) {
        ByteBuffer byteBuf = (ByteBuffer) val;
        buf = byteBuf.array();
        offset = byteBuf.position();
        len = byteBuf.limit() - byteBuf.position();
      } else {
        String strVal = val.toString();
        //the string has to be a base64 encoded string
        buf = Base64.base64ToByteArray(strVal);
        offset = 0;
        len = buf.length;
      }
  
      Field f = new Field(field.getName(), buf, offset, len);
      f.setBoost(boost);
      return f;
    }
  }
  