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.causeway.core.metamodel.facets.objectvalue.digits;
  
  import java.util.Optional;
  import java.util.function.BiConsumer;
  
  import org.apache.causeway.core.metamodel.facetapi.Facet;
  import org.apache.causeway.core.metamodel.facetapi.FacetAbstract;
  import org.apache.causeway.core.metamodel.facetapi.FacetHolder;
  
  import lombok.Getter;
  import org.jspecify.annotations.NonNull;
  
  public abstract class MaxFractionalDigitsFacetAbstract
  extends FacetAbstract
  implements MaxFractionalDigitsFacet {
  
      private static final Class<? extends Facet> type() {
          return MaxFractionalDigitsFacet.class;
      }
  
      @Getter(onMethod_ = {@Override})
      private final int maxFractionalDigits;
  
      protected MaxFractionalDigitsFacetAbstract(
              final int maxFractionalDigits,
              final FacetHolder holder) {
          super(type(), holder);
          this.maxFractionalDigits = maxFractionalDigits;
      }
  
      protected MaxFractionalDigitsFacetAbstract(
              final int maxFractionalDigits,
              final FacetHolder holder,
              final Facet.Precedence precedence) {
          super(type(), holder, precedence);
          this.maxFractionalDigits = maxFractionalDigits;
      }
  
      @Override
      public boolean semanticEquals(final @NonNull Facet other) {
          return other instanceof MaxFractionalDigitsFacet
                  ? Integer.compare(
                          this.getMaxFractionalDigits(),
                          ((MaxFractionalDigitsFacet)other).getMaxFractionalDigits()) == 0
                  : false;
      }
  
      @Override
      public void visitAttributes(final BiConsumer<String, Object> visitor) {
          super.visitAttributes(visitor);
          visitor.accept("maxFractionalDigits", maxFractionalDigits <0
                  ? "unlimited"
                  : String.valueOf(maxFractionalDigits));
      }
  
      /**
       * If equal, first argument wins over second.
       */
      public static Optional<MaxFractionalDigitsFacet> minimum(
              final Optional<MaxFractionalDigitsFacet> a,
              final Optional<MaxFractionalDigitsFacet> b) {
          if(b.isEmpty()) {
              return a;
          }
          if(a.isEmpty()) {
              return b;
          }
          return a.get().getMaxFractionalDigits() <= b.get().getMaxFractionalDigits()
                  ? a
                  : b;
      }
  
  }
  