/*
 * Copyright 2010-2012 Luca Garulli (l.garulli--at--orientechnologies.com)
 *
 * 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 com.orientechnologies.common.types;

/**
 * Modifiable value. Point to the real value. Useful to pass in method as parameter, letting the method to change. A sort of void*
 * of C language.
 * 
 * @author Luca Garulli (l.garulli--at--orientechnologies.com)
 * 
 */
public class ORef<T> {
  public T value;

  public ORef() {
  }

  public ORef(final T object) {
    this.value = object;
  }

  public ORef<T> clear() {
    value = null;
    return this;
  }

  @Override
  public String toString() {
    return value != null ? value.toString() : "ORef<null>";
  }
}
