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.cassandra.anttasks;
  
  import org.apache.tools.ant.BuildException;
  import org.apache.tools.ant.PropertyHelper;
  import org.apache.tools.ant.Task;
  
  public class SetSystemProperty extends Task
  {
      private String name;
      private String value;
  
      public void setName(String name)
      {
          this.name = name;
      }
  
      public void setValue(String value)
      {
          this.value = value;
      }
  
      @Override
      public void execute() throws BuildException
      {
          if (name == null || name.isEmpty())
          {
              throw new BuildException("propertyName attribute is missing or empty.");
          }
  
          if (value == null || value.isEmpty())
          {
              throw new BuildException("propertyValue attribute is missing or empty.");
          }
  
          PropertyHelper propertyHelper = PropertyHelper.getPropertyHelper(getProject());
          String evaluatedValue = propertyHelper.replaceProperties(value);
  
          if (evaluatedValue == null)
              System.getProperties().remove(name);
          else
              // checkstyle: suppress below 'blockSystemPropertyUsage'
              System.setProperty(name, evaluatedValue);
      }
  }