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JPPF, the open source grid computing solution
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/*
 * JPPF.
 * Copyright (C) 2005-2015 JPPF Team.
 * http://www.jppf.org
 *
 * 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.jppf.node.protocol;

import java.util.*;

import org.jppf.location.Location;

/**
 * A simple implementation of the {@link ClassPath} interface
 * @author Laurent Cohen
 */
public class ClassPathImpl implements ClassPath {
  /**
   * Mapping of classpath elements to their names.
   */
  private final Map elementMap = new HashMap<>();
  /**
   * Determines whether the node should force a reset of the class loader before executing the tasks.
   */
  private boolean forceClassLoaderReset = false;

  @Override
  public Iterator iterator() {
    return elementMap.values().iterator();
  }

  @Override
  public ClassPath add(final ClassPathElement element) {
    elementMap.put(element.getName(), element);
    return this;
  }

  @Override
  public ClassPath add(final String name, final Location location) {
    elementMap.put(name, new ClassPathElementImpl(name, location));
    return this;
  }

  @Override
  public ClassPath add(final String name, final Location localLocation, final Location remoteLocation) {
    elementMap.put(name, new ClassPathElementImpl(name, localLocation, remoteLocation));
    return this;
  }

  @Override
  public ClassPath remove(final ClassPathElement element) {
    elementMap.remove(element.getName());
    return this;
  }

  @Override
  public ClassPath remove(final String name) {
    elementMap.remove(name);
    return null;
  }

  @Override
  public ClassPath clear() {
    elementMap.clear();
    return this;
  }

  @Override
  public ClassPathElement element(final String name) {
    return elementMap.get(name);
  }

  @Override
  public Collection allElements() {
    return new ArrayList<>(elementMap.values());
  }

  @Override
  public boolean isEmpty() {
    return elementMap.isEmpty();
  }

  @Override
  public boolean isForceClassLoaderReset() {
    return forceClassLoaderReset;
  }

  @Override
  public void setForceClassLoaderReset(final boolean forceClassLoaderReset) {
    this.forceClassLoaderReset = forceClassLoaderReset;
  }

  @Override
  public String toString() {
    StringBuilder sb = new StringBuilder(getClass().getSimpleName()).append('[');
    int count = 0;
    for (ClassPathElement elt: this) {
      if (count > 0) sb.append(", ");
      sb.append(elt.getName());
    }
    sb.append(']');
    return sb.toString();
  }
}