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   *  to you under the Apache License, Version 2.0 (the
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   *
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  package org.apache.cayenne.crypto.transformer;
  
  import java.util.Map;
  
  import org.apache.cayenne.crypto.transformer.bytes.BytesDecryptor;
  import org.apache.cayenne.crypto.transformer.value.ValueDecryptor;
  
  /**
   * @since 4.0
   */
  public class DefaultMapTransformer implements MapTransformer {
  
      private String[] mapKeys;
      private ValueDecryptor[] transformers;
      private BytesDecryptor bytesDecryptor;
  
      public DefaultMapTransformer(String[] mapKeys, ValueDecryptor[] transformers, BytesDecryptor bytesDecryptor) {
          this.mapKeys = mapKeys;
          this.transformers = transformers;
          this.bytesDecryptor = bytesDecryptor;
      }
  
      @Override
      public void transform(Map<String, Object> map) {
  
          int len = mapKeys.length;
  
          for (int i = 0; i < len; i++) {
              Object value = map.get(mapKeys[i]);
  
              if (value != null) {
                  Object transformed = transformers[i].decrypt(bytesDecryptor, value);
                  map.put(mapKeys[i], transformed);
              }
          }
      }
  }
  