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  package org.apache.cayenne.crypto.map;
  
  import java.util.regex.Pattern;
  
  import org.apache.cayenne.map.DbAttribute;
  
  /**
   * A {@link ColumnMapper} that decides on whether a column is encrypted by
   * matching its name against a preset pattern. Only column name is inspected.
   * Table name is ignored.
   * 
   * @since 4.0
   */
  public class PatternColumnMapper implements ColumnMapper {
  
      private Pattern columnNamePattern;
  
      public PatternColumnMapper(String columnNamePattern) {
          this.columnNamePattern = Pattern.compile(columnNamePattern);
      }
  
      @Override
      public boolean isEncrypted(DbAttribute column) {
          return columnNamePattern.matcher(column.getName()).find();
      }
  
  }
  