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.properties.property.regex;
  
  import java.util.Optional;
  
  import org.apache.causeway.applib.annotation.Property;
  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 RegExFacetForPropertyAnnotation
  extends RegExFacetAbstract {
  
      public static Optional<RegExFacet> create(
              final Optional<Property> propertyIfAny,
              final Class<?> returnType,
              final FacetHolder holder) {
  
          if (!returnType.equals(String.class)) {
              return null;
          }
  
          return propertyIfAny
                  .filter(property -> _Strings.emptyToNull(property.regexPattern()) != null)
                  .map(property -> new RegExFacetForPropertyAnnotation(
                          property.regexPattern(), property.regexPatternFlags(), holder,
                          property.regexPatternReplacement()));
  
      }
  
      private RegExFacetForPropertyAnnotation(
              final String pattern,
              final int patternFlags,
              final FacetHolder holder,
              final String replacement) {
  
          super(pattern, patternFlags, replacement, holder);
      }
  
  }
  