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 * Copyright 2002-2018 the original author or authors.
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 * 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
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package org.springframework.aop.aspectj;

import java.lang.reflect.InvocationTargetException;

import org.springframework.aop.framework.AopConfigException;
import org.springframework.core.Ordered;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
import org.springframework.util.ReflectionUtils;

Implementation of AspectInstanceFactory that creates a new instance of the specified aspect class for every getAspectInstance() call.
Author:Juergen Hoeller
Since:2.0.4
/** * Implementation of {@link AspectInstanceFactory} that creates a new instance * of the specified aspect class for every {@link #getAspectInstance()} call. * * @author Juergen Hoeller * @since 2.0.4 */
public class SimpleAspectInstanceFactory implements AspectInstanceFactory { private final Class<?> aspectClass;
Create a new SimpleAspectInstanceFactory for the given aspect class.
Params:
  • aspectClass – the aspect class
/** * Create a new SimpleAspectInstanceFactory for the given aspect class. * @param aspectClass the aspect class */
public SimpleAspectInstanceFactory(Class<?> aspectClass) { Assert.notNull(aspectClass, "Aspect class must not be null"); this.aspectClass = aspectClass; }
Return the specified aspect class (never null).
/** * Return the specified aspect class (never {@code null}). */
public final Class<?> getAspectClass() { return this.aspectClass; } @Override public final Object getAspectInstance() { try { return ReflectionUtils.accessibleConstructor(this.aspectClass).newInstance(); } catch (NoSuchMethodException ex) { throw new AopConfigException( "No default constructor on aspect class: " + this.aspectClass.getName(), ex); } catch (InstantiationException ex) { throw new AopConfigException( "Unable to instantiate aspect class: " + this.aspectClass.getName(), ex); } catch (IllegalAccessException ex) { throw new AopConfigException( "Could not access aspect constructor: " + this.aspectClass.getName(), ex); } catch (InvocationTargetException ex) { throw new AopConfigException( "Failed to invoke aspect constructor: " + this.aspectClass.getName(), ex.getTargetException()); } } @Override @Nullable public ClassLoader getAspectClassLoader() { return this.aspectClass.getClassLoader(); }
Determine the order for this factory's aspect instance, either an instance-specific order expressed through implementing the Ordered interface, or a fallback order.
See Also:
/** * Determine the order for this factory's aspect instance, * either an instance-specific order expressed through implementing * the {@link org.springframework.core.Ordered} interface, * or a fallback order. * @see org.springframework.core.Ordered * @see #getOrderForAspectClass */
@Override public int getOrder() { return getOrderForAspectClass(this.aspectClass); }
Determine a fallback order for the case that the aspect instance does not express an instance-specific order through implementing the Ordered interface.

The default implementation simply returns Ordered.LOWEST_PRECEDENCE.

Params:
  • aspectClass – the aspect class
/** * Determine a fallback order for the case that the aspect instance * does not express an instance-specific order through implementing * the {@link org.springframework.core.Ordered} interface. * <p>The default implementation simply returns {@code Ordered.LOWEST_PRECEDENCE}. * @param aspectClass the aspect class */
protected int getOrderForAspectClass(Class<?> aspectClass) { return Ordered.LOWEST_PRECEDENCE; } }