/*
    * Copyright 2001-2005 The Apache Software Foundation.
    *
    * Licensed 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.logging.log4j.catalog.api.annotation;
  
  import org.springframework.context.annotation.Condition;
  import org.springframework.context.annotation.ConditionContext;
  import org.springframework.core.env.Environment;
  import org.springframework.core.type.AnnotatedTypeMetadata;
  import org.springframework.util.MultiValueMap;
  
  /**
   *
   */
  public class PropertyExistsCondition implements Condition {
      @Override
      public boolean matches(ConditionContext context, AnnotatedTypeMetadata metadata) {
          Environment env = context.getEnvironment();
          MultiValueMap<String, Object> attrs = metadata.getAllAnnotationAttributes(ConditionOnPropertyExists.class.getName());
          if (attrs != null) {
              Object value = attrs.get("value");
              return value != null && null != env && env.getProperty(value.toString()) != null;
          }
          return false;
      }
  }