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@ -16,256 +16,249 @@
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package com.fr.third.springframework.aop.aspectj; |
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import java.lang.reflect.Method; |
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import org.aopalliance.aop.Advice; |
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import com.fr.third.aspectj.lang.reflect.PerClauseKind; |
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import com.fr.third.springframework.aop.Pointcut; |
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import com.fr.third.springframework.aop.support.DynamicMethodMatcherPointcut; |
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import com.fr.third.springframework.aop.support.Pointcuts; |
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import org.aopalliance.aop.Advice; |
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import static com.fr.third.springframework.aop.aspectj.AbstractAspectJAdvisorFactory.AspectJAnnotationType.AtAfter; |
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import static com.fr.third.springframework.aop.aspectj.AbstractAspectJAdvisorFactory.AspectJAnnotationType.AtAfterReturning; |
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import static com.fr.third.springframework.aop.aspectj.AbstractAspectJAdvisorFactory.AspectJAnnotationType.AtAfterThrowing; |
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import static com.fr.third.springframework.aop.aspectj.AbstractAspectJAdvisorFactory.AspectJAnnotationType.AtAround; |
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import static com.fr.third.springframework.aop.aspectj.AbstractAspectJAdvisorFactory.AspectJAnnotationType.AtPointcut; |
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import java.lang.reflect.Method; |
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/** |
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* Internal implementation of AspectJPointcutAdvisor. |
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* Note that there will be one instance of this advisor for each target method. |
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* Internal implementation of AspectJPointcutAdvisor. Note that there will be one instance of this |
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* advisor for each target method. |
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* |
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* @author Rod Johnson |
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* @author Juergen Hoeller |
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* @since 2.0 |
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*/ |
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class InstantiationModelAwarePointcutAdvisorImpl |
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implements InstantiationModelAwarePointcutAdvisor, AspectJPrecedenceInformation { |
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private final AspectJExpressionPointcut declaredPointcut; |
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private Pointcut pointcut; |
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private final MetadataAwareAspectInstanceFactory aspectInstanceFactory; |
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private final Method method; |
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private final boolean lazy; |
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private final AspectJAdvisorFactory atAspectJAdvisorFactory; |
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private Advice instantiatedAdvice; |
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private int declarationOrder; |
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private String aspectName; |
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private Boolean isBeforeAdvice; |
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private Boolean isAfterAdvice; |
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public InstantiationModelAwarePointcutAdvisorImpl(AspectJAdvisorFactory af, AspectJExpressionPointcut ajexp, |
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MetadataAwareAspectInstanceFactory aif, Method method, int declarationOrderInAspect, String aspectName) { |
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this.declaredPointcut = ajexp; |
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this.method = method; |
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this.atAspectJAdvisorFactory = af; |
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this.aspectInstanceFactory = aif; |
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this.declarationOrder = declarationOrderInAspect; |
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this.aspectName = aspectName; |
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if (aif.getAspectMetadata().isLazilyInstantiated()) { |
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// Static part of the pointcut is a lazy type.
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Pointcut preInstantiationPointcut = |
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Pointcuts.union(aif.getAspectMetadata().getPerClausePointcut(), this.declaredPointcut); |
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// Make it dynamic: must mutate from pre-instantiation to post-instantiation state.
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// If it's not a dynamic pointcut, it may be optimized out
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// by the Spring AOP infrastructure after the first evaluation.
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this.pointcut = new PerTargetInstantiationModelPointcut(this.declaredPointcut, preInstantiationPointcut, aif); |
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this.lazy = true; |
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} |
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else { |
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// A singleton aspect.
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this.instantiatedAdvice = instantiateAdvice(this.declaredPointcut); |
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this.pointcut = declaredPointcut; |
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this.lazy = false; |
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} |
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} |
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/** |
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* The pointcut for Spring AOP to use. Actual behaviour of the pointcut will change |
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* depending on the state of the advice. |
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*/ |
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@Override |
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public Pointcut getPointcut() { |
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return this.pointcut; |
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} |
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/** |
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* This is only of interest for Spring AOP: AspectJ instantiation semantics |
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* are much richer. In AspectJ terminology, all a return of {@code true} |
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* means here is that the aspect is not a SINGLETON. |
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*/ |
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@Override |
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public boolean isPerInstance() { |
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return (getAspectMetadata().getAjType().getPerClause().getKind() != PerClauseKind.SINGLETON); |
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} |
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/** |
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* Return the AspectJ AspectMetadata for this advisor. |
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*/ |
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public com.fr.third.aspectj.lang.annotation.AspectMetadata getAspectMetadata() { |
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return this.aspectInstanceFactory.getAspectMetadata(); |
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} |
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/** |
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* Lazily instantiate advice if necessary. |
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*/ |
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@Override |
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public synchronized Advice getAdvice() { |
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if (this.instantiatedAdvice == null) { |
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this.instantiatedAdvice = instantiateAdvice(this.declaredPointcut); |
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} |
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return this.instantiatedAdvice; |
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} |
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@Override |
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public boolean isLazy() { |
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return this.lazy; |
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} |
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@Override |
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public synchronized boolean isAdviceInstantiated() { |
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return (this.instantiatedAdvice != null); |
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} |
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private Advice instantiateAdvice(AspectJExpressionPointcut pcut) { |
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return this.atAspectJAdvisorFactory.getAdvice( |
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this.method, pcut, this.aspectInstanceFactory, this.declarationOrder, this.aspectName); |
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} |
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public MetadataAwareAspectInstanceFactory getAspectInstanceFactory() { |
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return this.aspectInstanceFactory; |
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} |
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public AspectJExpressionPointcut getDeclaredPointcut() { |
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return this.declaredPointcut; |
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} |
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@Override |
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public int getOrder() { |
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return this.aspectInstanceFactory.getOrder(); |
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} |
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@Override |
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public String getAspectName() { |
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return this.aspectName; |
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} |
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@Override |
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public int getDeclarationOrder() { |
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return this.declarationOrder; |
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} |
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@Override |
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public boolean isBeforeAdvice() { |
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if (this.isBeforeAdvice == null) { |
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determineAdviceType(); |
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} |
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return this.isBeforeAdvice; |
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} |
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@Override |
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public boolean isAfterAdvice() { |
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if (this.isAfterAdvice == null) { |
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determineAdviceType(); |
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} |
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return this.isAfterAdvice; |
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} |
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/** |
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* Duplicates some logic from getAdvice, but importantly does not force |
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* creation of the advice. |
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*/ |
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private void determineAdviceType() { |
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AbstractAspectJAdvisorFactory.AspectJAnnotation<?> aspectJAnnotation = |
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AbstractAspectJAdvisorFactory.findAspectJAnnotationOnMethod(this.method); |
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if (aspectJAnnotation == null) { |
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this.isBeforeAdvice = false; |
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this.isAfterAdvice = false; |
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} |
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else { |
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switch (aspectJAnnotation.getAnnotationType()) { |
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case AtAfter: |
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case AtAfterReturning: |
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case AtAfterThrowing: |
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this.isAfterAdvice = true; |
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this.isBeforeAdvice = false; |
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break; |
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case AtAround: |
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case AtPointcut: |
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this.isAfterAdvice = false; |
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this.isBeforeAdvice = false; |
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break; |
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case AtBefore: |
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this.isAfterAdvice = false; |
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this.isBeforeAdvice = true; |
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} |
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} |
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} |
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@Override |
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public String toString() { |
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return "InstantiationModelAwarePointcutAdvisor: expression [" + getDeclaredPointcut().getExpression() + |
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"]; advice method [" + this.method + "]; perClauseKind=" + |
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this.aspectInstanceFactory.getAspectMetadata().getAjType().getPerClause().getKind(); |
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} |
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/** |
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* Pointcut implementation that changes its behaviour when the advice is instantiated. |
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* Note that this is a <i>dynamic</i> pointcut. Otherwise it might |
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* be optimized out if it does not at first match statically. |
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*/ |
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private class PerTargetInstantiationModelPointcut extends DynamicMethodMatcherPointcut { |
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private final AspectJExpressionPointcut declaredPointcut; |
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private final Pointcut preInstantiationPointcut; |
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private LazySingletonAspectInstanceFactoryDecorator aspectInstanceFactory; |
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private PerTargetInstantiationModelPointcut(AspectJExpressionPointcut declaredPointcut, |
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Pointcut preInstantiationPointcut, MetadataAwareAspectInstanceFactory aspectInstanceFactory) { |
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this.declaredPointcut = declaredPointcut; |
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this.preInstantiationPointcut = preInstantiationPointcut; |
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if (aspectInstanceFactory instanceof LazySingletonAspectInstanceFactoryDecorator) { |
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this.aspectInstanceFactory = (LazySingletonAspectInstanceFactoryDecorator) aspectInstanceFactory; |
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} |
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} |
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@Override |
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public boolean matches(Method method, Class<?> targetClass) { |
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// We're either instantiated and matching on declared pointcut, or uninstantiated matching on either pointcut
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return (isAspectMaterialized() && this.declaredPointcut.matches(method, targetClass)) || |
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this.preInstantiationPointcut.getMethodMatcher().matches(method, targetClass); |
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} |
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@Override |
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public boolean matches(Method method, Class<?> targetClass, Object[] args) { |
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// This can match only on declared pointcut.
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return (isAspectMaterialized() && this.declaredPointcut.matches(method, targetClass)); |
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} |
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private boolean isAspectMaterialized() { |
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return (this.aspectInstanceFactory == null || this.aspectInstanceFactory.isMaterialized()); |
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} |
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} |
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implements InstantiationModelAwarePointcutAdvisor, AspectJPrecedenceInformation { |
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private final AspectJExpressionPointcut declaredPointcut; |
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private Pointcut pointcut; |
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private final MetadataAwareAspectInstanceFactory aspectInstanceFactory; |
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private final Method method; |
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private final boolean lazy; |
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private final AspectJAdvisorFactory atAspectJAdvisorFactory; |
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private Advice instantiatedAdvice; |
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private int declarationOrder; |
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private String aspectName; |
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private Boolean isBeforeAdvice; |
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private Boolean isAfterAdvice; |
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public InstantiationModelAwarePointcutAdvisorImpl( |
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AspectJAdvisorFactory af, |
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AspectJExpressionPointcut ajexp, |
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MetadataAwareAspectInstanceFactory aif, |
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Method method, |
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int declarationOrderInAspect, |
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String aspectName) { |
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this.declaredPointcut = ajexp; |
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this.method = method; |
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this.atAspectJAdvisorFactory = af; |
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this.aspectInstanceFactory = aif; |
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this.declarationOrder = declarationOrderInAspect; |
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this.aspectName = aspectName; |
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if (aif.getAspectMetadata().isLazilyInstantiated()) { |
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// Static part of the pointcut is a lazy type.
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Pointcut preInstantiationPointcut = |
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Pointcuts.union(aif.getAspectMetadata().getPerClausePointcut(), this.declaredPointcut); |
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// Make it dynamic: must mutate from pre-instantiation to post-instantiation state.
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// If it's not a dynamic pointcut, it may be optimized out
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// by the Spring AOP infrastructure after the first evaluation.
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this.pointcut = |
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new PerTargetInstantiationModelPointcut( |
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this.declaredPointcut, preInstantiationPointcut, aif); |
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this.lazy = true; |
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} else { |
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// A singleton aspect.
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this.instantiatedAdvice = instantiateAdvice(this.declaredPointcut); |
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this.pointcut = declaredPointcut; |
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this.lazy = false; |
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} |
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} |
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/** |
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* The pointcut for Spring AOP to use. Actual behaviour of the pointcut will change depending on |
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* the state of the advice. |
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*/ |
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@Override |
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public Pointcut getPointcut() { |
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return this.pointcut; |
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} |
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/** |
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* This is only of interest for Spring AOP: AspectJ instantiation semantics are much richer. In |
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* AspectJ terminology, all a return of {@code true} means here is that the aspect is not a |
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* SINGLETON. |
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*/ |
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@Override |
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public boolean isPerInstance() { |
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return (getAspectMetadata().getAjType().getPerClause().getKind() != PerClauseKind.SINGLETON); |
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} |
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/** Return the AspectJ AspectMetadata for this advisor. */ |
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public AspectMetadata getAspectMetadata() { |
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return this.aspectInstanceFactory.getAspectMetadata(); |
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} |
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/** Lazily instantiate advice if necessary. */ |
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@Override |
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public synchronized Advice getAdvice() { |
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if (this.instantiatedAdvice == null) { |
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this.instantiatedAdvice = instantiateAdvice(this.declaredPointcut); |
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} |
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return this.instantiatedAdvice; |
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} |
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@Override |
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public boolean isLazy() { |
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return this.lazy; |
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} |
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@Override |
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public synchronized boolean isAdviceInstantiated() { |
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return (this.instantiatedAdvice != null); |
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} |
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private Advice instantiateAdvice(AspectJExpressionPointcut pcut) { |
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return this.atAspectJAdvisorFactory.getAdvice( |
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this.method, pcut, this.aspectInstanceFactory, this.declarationOrder, this.aspectName); |
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} |
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public MetadataAwareAspectInstanceFactory getAspectInstanceFactory() { |
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return this.aspectInstanceFactory; |
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} |
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public AspectJExpressionPointcut getDeclaredPointcut() { |
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return this.declaredPointcut; |
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} |
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@Override |
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public int getOrder() { |
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return this.aspectInstanceFactory.getOrder(); |
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} |
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@Override |
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public String getAspectName() { |
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return this.aspectName; |
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} |
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@Override |
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public int getDeclarationOrder() { |
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return this.declarationOrder; |
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} |
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@Override |
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public boolean isBeforeAdvice() { |
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if (this.isBeforeAdvice == null) { |
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determineAdviceType(); |
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} |
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return this.isBeforeAdvice; |
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} |
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@Override |
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public boolean isAfterAdvice() { |
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if (this.isAfterAdvice == null) { |
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determineAdviceType(); |
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} |
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return this.isAfterAdvice; |
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} |
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/** |
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* Duplicates some logic from getAdvice, but importantly does not force creation of the advice. |
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*/ |
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private void determineAdviceType() { |
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AbstractAspectJAdvisorFactory.AspectJAnnotation<?> aspectJAnnotation = |
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AbstractAspectJAdvisorFactory.findAspectJAnnotationOnMethod(this.method); |
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if (aspectJAnnotation == null) { |
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this.isBeforeAdvice = false; |
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this.isAfterAdvice = false; |
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} else { |
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switch (aspectJAnnotation.getAnnotationType()) { |
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case AtAfter: |
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case AtAfterReturning: |
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case AtAfterThrowing: |
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this.isAfterAdvice = true; |
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this.isBeforeAdvice = false; |
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break; |
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case AtAround: |
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case AtPointcut: |
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this.isAfterAdvice = false; |
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this.isBeforeAdvice = false; |
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break; |
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case AtBefore: |
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this.isAfterAdvice = false; |
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this.isBeforeAdvice = true; |
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} |
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} |
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} |
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@Override |
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public String toString() { |
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return "InstantiationModelAwarePointcutAdvisor: expression [" |
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+ getDeclaredPointcut().getExpression() |
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+ "]; advice method [" |
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+ this.method |
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+ "]; perClauseKind=" |
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+ this.aspectInstanceFactory.getAspectMetadata().getAjType().getPerClause().getKind(); |
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} |
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/** |
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* Pointcut implementation that changes its behaviour when the advice is instantiated. Note that |
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* this is a <i>dynamic</i> pointcut. Otherwise it might be optimized out if it does not at first |
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* match statically. |
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*/ |
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private class PerTargetInstantiationModelPointcut extends DynamicMethodMatcherPointcut { |
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private final AspectJExpressionPointcut declaredPointcut; |
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private final Pointcut preInstantiationPointcut; |
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private LazySingletonAspectInstanceFactoryDecorator aspectInstanceFactory; |
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private PerTargetInstantiationModelPointcut( |
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|
AspectJExpressionPointcut declaredPointcut, |
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|
|
Pointcut preInstantiationPointcut, |
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|
|
MetadataAwareAspectInstanceFactory aspectInstanceFactory) { |
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|
this.declaredPointcut = declaredPointcut; |
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|
this.preInstantiationPointcut = preInstantiationPointcut; |
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|
|
if (aspectInstanceFactory instanceof LazySingletonAspectInstanceFactoryDecorator) { |
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|
|
this.aspectInstanceFactory = |
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|
|
(LazySingletonAspectInstanceFactoryDecorator) aspectInstanceFactory; |
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|
} |
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|
} |
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@Override |
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|
public boolean matches(Method method, Class<?> targetClass) { |
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|
|
// We're either instantiated and matching on declared pointcut, or uninstantiated matching on
|
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|
|
// either pointcut
|
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|
|
return (isAspectMaterialized() && this.declaredPointcut.matches(method, targetClass)) |
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|
|
|| this.preInstantiationPointcut.getMethodMatcher().matches(method, targetClass); |
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} |
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|
@Override |
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|
|
public boolean matches(Method method, Class<?> targetClass, Object[] args) { |
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|
|
// This can match only on declared pointcut.
|
|
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|
|
return (isAspectMaterialized() && this.declaredPointcut.matches(method, targetClass)); |
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|
|
} |
|
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|
|
private boolean isAspectMaterialized() { |
|
|
|
|
return (this.aspectInstanceFactory == null || this.aspectInstanceFactory.isMaterialized()); |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
} |
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hzzz
7 years ago