code: /**
   * This file is part of Eclipse Steady.
   *
   * 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.
   *
   * SPDX-License-Identifier: Apache-2.0
   * SPDX-FileCopyrightText: Copyright (c) 2018-2020 SAP SE or an SAP affiliate company and Eclipse Steady contributors
   */
  package org.eclipse.steady.java.monitor;
  
  /**
   * Checks whether the provided class loader is of the given type, or whether it is a child of another class loader of that type.
   * Use 'org.apache.catalina.loader.WebappClassLoader', for instance, to only consider classes loaded/traced in the context of
   * Web applications deployed in Tomcat (but not classes loaded by parent class loaders, such as the system or bootstrap loader).
   */
  public class ClassNameLoaderFilter implements LoaderFilter {
  
    private String classname = null;
    private boolean acceptChilds = false;
  
    /**
     * <p>Constructor for ClassNameLoaderFilter.</p>
     *
     * @param _classname a {@link java.lang.String} object.
     * @param _accept_childs a boolean.
     */
    public ClassNameLoaderFilter(String _classname, boolean _accept_childs) {
      this.classname = _classname;
      this.acceptChilds = _accept_childs;
    }
  
    /**
     * {@inheritDoc}
     *
     * Returns true of the given _loader is accepted by the filter.
     */
    public boolean accept(Loader _loader) {
      if (_loader.getClassLoader().getClass().getName().equals(this.classname)) return true;
  
      if (!this.acceptChilds) return false;
  
      final Loader parent = _loader.getParent();
      if (parent == null) return false;
      else return this.accept(parent);
    }
  }
  