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.autocomplete;
  
  import java.lang.annotation.Annotation;
  
  import org.apache.causeway.applib.annotation.MinLength;
  import org.apache.causeway.commons.internal.reflection._GenericResolver.ResolvedMethod;
  
  public final class MinLengthUtil {
  
      /**
       * Finds the value of the minimum length, from the {@link MinLength} annotation
       * on the last parameter of the supplied method.
       */
      public static int determineMinLength(final ResolvedMethod method) {
          if(method == null
                  || method.isNoArg()) {
              return MIN_LENGTH_DEFAULT;
          }
  
          var lastParam = method.method().getParameters()[method.paramCount()-1];
  
          for(Annotation annotation: lastParam.getAnnotations()) {
              if(annotation instanceof MinLength) {
                  return ((MinLength) annotation).value();
              }
          }
  
          return MinLengthUtil.MIN_LENGTH_DEFAULT;
      }
  
      public static final int MIN_LENGTH_DEFAULT = 1;
  
  }
  