kamon.annotation.el.ELProcessorFactory.scala Maven / Gradle / Ivy

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/*
 * =========================================================================================
 * Copyright © 2013-2015 the kamon project 
 *
 * 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 kamon.annotation.el

import javax.el.ELProcessor
import kamon.annotation.el.resolver.PrivateFieldELResolver

object ELProcessorFactory {
  def withClass(clazz: Class[_]): ELProcessor = {
    val processor = create()
    processor.getELManager.importClass(clazz.getName)
    processor
  }

  def withObject(obj: AnyRef): ELProcessor = {
    val processor = withClass(obj.getClass)
    processor.defineBean("this", obj)
    processor
  }

  private def create(): ELProcessor = {
    val processor = new ELProcessor()
    processor.getELManager.addELResolver(new PrivateFieldELResolver())
    processor
  }
}