whether method declares the given exception or one of its superclasses : Exception « Reflection « Java





whether method declares the given exception or one of its superclasses

 
/*
 * Copyright 2002-2008 the original author or authors.
 *
 * 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.
 */



import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.sql.SQLException;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;

/**
 * Simple utility class for working with the reflection API and handling
 * reflection exceptions.
 *
 * <p>Only intended for internal use.
 *
 * @author Juergen Hoeller
 * @author Rob Harrop
 * @author Rod Johnson
 * @author Costin Leau
 * @since 1.2.2
 */
public abstract class ReflectionUtils {
  /**
   * Determine whether the given method explicitly declares the given exception
   * or one of its superclasses, which means that an exception of that type
   * can be propagated as-is within a reflective invocation.
   * @param method the declaring method
   * @param exceptionType the exception to throw
   * @return <code>true</code> if the exception can be thrown as-is;
   * <code>false</code> if it needs to be wrapped
   */
  public static boolean declaresException(Method method, Class exceptionType) {

    Class[] declaredExceptions = method.getExceptionTypes();
    for (int i = 0; i < declaredExceptions.length; i++) {
      Class declaredException = declaredExceptions[i];
      if (declaredException.isAssignableFrom(exceptionType)) {
        return true;
      }
    }
    return false;
  }
}

   
  










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