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.param.parameter.regex;
  
  import java.util.Optional;
  
  import org.apache.causeway.applib.annotation.Parameter;
  import org.apache.causeway.commons.internal.base._Strings;
  import org.apache.causeway.core.metamodel.facetapi.FacetHolder;
  import org.apache.causeway.core.metamodel.facets.objectvalue.regex.RegExFacet;
  import org.apache.causeway.core.metamodel.facets.objectvalue.regex.RegExFacetAbstract;
  
  public class RegExFacetForParameterAnnotation
  extends RegExFacetAbstract {
  
      public static Optional<RegExFacet> create(
              final Optional<Parameter> parameterIfAny,
              final Class<?> parameterType,
              final FacetHolder holder) {
  
          return parameterIfAny
                  .filter(parameter -> _Strings.emptyToNull(parameter.regexPattern()) != null)
                  .map(parameter -> {
                      final String pattern = parameter.regexPattern();
                      final String replacement = parameter.regexPatternReplacement();
                      final int patternFlags = parameter.regexPatternFlags();
  
                      return new RegExFacetForParameterAnnotation(pattern, patternFlags, replacement, holder);
                  });
      }
  
      private RegExFacetForParameterAnnotation(
              final String pattern,
              final int patternFlags,
              final String replacement,
              final FacetHolder holder) {
          super(pattern, patternFlags, replacement, holder);
      }
  
  }
  