package org.dbunit.assertion.comparer.value.builder;
   
   import java.util.Collections;
   import java.util.HashMap;
   import java.util.Map;
   
   import org.dbunit.assertion.comparer.value.ValueComparer;
   
   /**
   * Convenience methods to help build the map of column name ->
   * {@link ValueComparer}.
   *
   * @author Jeff Jensen
   * @since 2.6.0
   */
  public class ColumnValueComparerMapBuilder
  {
      private Map<String, ValueComparer> comparers = new HashMap<>();
  
      /**
       * Add a columnName to {@link ValueComparer} mapping.
       *
       * @return this for fluent syntax.
       */
      public ColumnValueComparerMapBuilder add(final String columnName,
              final ValueComparer valueComparer)
      {
          comparers.put(columnName, valueComparer);
          return this;
      }
  
      /** @return The assembled map. */
      public Map<String, ValueComparer> build()
      {
          return Collections.unmodifiableMap(comparers);
      }
  }