/*
 * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
 * The software in this package is published under the terms of the CPAL v1.0
 * license, a copy of which has been included with this distribution in the
 * LICENSE.txt file.
 */
package org.mule.runtime.core.routing.filters;

import static org.mule.runtime.core.util.ClassUtils.equal;
import static org.mule.runtime.core.util.ClassUtils.hash;

import org.mule.runtime.api.message.Message;
import org.mule.runtime.core.api.Event;
import org.mule.runtime.core.api.routing.filter.Filter;
import org.mule.runtime.core.util.ClassUtils;

/**
 * <code>PayloadTypeFilter</code> filters based on the type of the object received.
 */

public class PayloadTypeFilter implements Filter {

  private Class expectedType;

  public PayloadTypeFilter() {
    super();
  }

  public PayloadTypeFilter(String expectedType) throws ClassNotFoundException {
    this(ClassUtils.loadClass(expectedType, PayloadTypeFilter.class));
  }

  public PayloadTypeFilter(Class expectedType) {
    this.expectedType = expectedType;
  }

  @Override
  public boolean accept(Message message, Event.Builder builder) {
    return (expectedType != null ? expectedType.isAssignableFrom(message.getPayload().getDataType().getType()) : false);
  }

  public Class getExpectedType() {
    return expectedType;
  }

  public void setExpectedType(Class expectedType) {
    this.expectedType = expectedType;
  }

  @Override
  public boolean equals(Object obj) {
    if (this == obj)
      return true;
    if (obj == null || getClass() != obj.getClass())
      return false;

    final PayloadTypeFilter other = (PayloadTypeFilter) obj;
    return equal(expectedType, other.expectedType);
  }

  @Override
  public int hashCode() {
    return hash(new Object[] {this.getClass(), expectedType});
  }
}