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// Portions Copyright [2018-2021] [Payara Foundation and/or its affiliates]
package com.sun.ejb.containers.interceptors;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import jakarta.interceptor.InvocationContext;
import com.sun.ejb.containers.EJBContextImpl;
import com.sun.ejb.containers.BaseContainer;
import com.sun.enterprise.deployment.LifecycleCallbackDescriptor.CallbackType;
import com.sun.enterprise.container.common.spi.util.InterceptorInfo;
import java.util.Map;
import java.util.HashMap;
/**
* Concrete InvocationContext implementation passed to callback methods
* defined in interceptor classes.
*/
public class CallbackInvocationContext implements InvocationContext {
private Map contextData;
private int callbackIndex = 0;
private CallbackChainImpl callbackChain;
private Object[] interceptorInstances;
private Object targetObjectInstance;
private CallbackType eventType;
Method method;
// For AroundConstruct callback
private Class targetObjectClass;
private Constructor ctor = null;
private Class[] ctorParamTypes = null;
private Object[] ctorParams = null;
private BaseContainer container = null;
private EJBContextImpl ctx = null;
private InterceptorInfo interceptorInfo = null;
public CallbackInvocationContext(Object targetObjectInstance,
Object[] interceptorInstances,
CallbackChainImpl chain) {
this.targetObjectInstance = targetObjectInstance;
this.interceptorInstances = interceptorInstances;
callbackChain = chain;
}
public CallbackInvocationContext(Object targetObjectInstance,
Object[] interceptorInstances,
CallbackChainImpl chain,
CallbackType eventType) {
this(targetObjectInstance, interceptorInstances, chain);
this.eventType = eventType;
}
/**
* AroundConstruct
*/
public CallbackInvocationContext(Class targetObjectClass,
Object[] interceptorInstances,
CallbackChainImpl chain,
CallbackType eventType,
InterceptorInfo interceptorInfo) {
this(null, interceptorInstances, chain, eventType);
this.targetObjectClass = targetObjectClass;
Constructor[] ctors = targetObjectClass.getConstructors();
for(Constructor ctor0 : ctors) {
ctor = ctor0;
if(ctor0.getParameterTypes().length == 0) {
// We are looking for a no-arg constructor
break;
}
}
ctorParamTypes = ctor.getParameterTypes();
ctorParams = new Object[ctorParamTypes.length];
this.interceptorInfo = interceptorInfo;
}
/**
* AroundConstruct
*/
public CallbackInvocationContext(Class targetObjectClass,
Object[] interceptorInstances,
CallbackChainImpl chain,
CallbackType eventType,
BaseContainer container,
EJBContextImpl ctx) {
this(targetObjectClass, interceptorInstances, chain, eventType, null);
this.container = container;
this.ctx = ctx;
}
// InvocationContext methods
@Override
public Object getTarget() {
return targetObjectInstance;
}
public Object[] getInterceptorInstances() {
return interceptorInstances;
}
@Override
public Object getTimer() {
return null;
}
@Override
public Constructor getConstructor() {
if (eventType == CallbackType.AROUND_CONSTRUCT) {
return ctor;
}
return null;
}
@Override
public Method getMethod() {
if (eventType == CallbackType.AROUND_CONSTRUCT) {
return null;
}
return method;
}
@Override
public Object[] getParameters() {
if (eventType == CallbackType.AROUND_CONSTRUCT) {
return ctorParams;
}
throw new IllegalStateException("not applicable to Callback methods");
}
@Override
public void setParameters(Object[] params) {
if (eventType == CallbackType.AROUND_CONSTRUCT) {
checkSetParameters(params);
ctorParams = params;
} else {
throw new IllegalStateException("not applicable to Callback methods");
}
}
@Override
public Map getContextData() {
if( contextData == null ) {
contextData = new HashMap<>();
}
return contextData;
}
@Override
public Object proceed() throws Exception {
try {
callbackIndex++;
return callbackChain.invokeNext(callbackIndex, this);
} catch (Exception ex) {
throw ex;
} catch (Throwable th) {
throw new Exception(th);
}
}
/**
* Called from Interceptor Chain to create the bean instance.
*/
public void invokeSpecial() throws Throwable {
if (eventType == CallbackType.AROUND_CONSTRUCT) {
if (container == null) {
targetObjectInstance = targetObjectClass.newInstance();
interceptorInfo.setTargetObjectInstance(targetObjectInstance);
} else {
container.createEjbInstanceForInterceptors(ctorParams, ctx);
targetObjectInstance = ctx.getEJB();
}
} // else do nothing? XXX
}
private void checkSetParameters(Object[] params) {
if( ctor == null) {
throw new IllegalStateException("Internal Error: Got null constructor");
}
if (params == null) {
if (ctorParamTypes.length != 0) {
throw new IllegalArgumentException("Wrong number of parameters for "
+ " constructor: " + ctor);
}
} else {
if (ctorParamTypes.length != params.length) {
throw new IllegalArgumentException("Wrong number of parameters for "
+ " constructor: " + ctor);
}
int index = 0 ;
for (Class type : ctorParamTypes) {
if (params[index] == null) {
if (type.isPrimitive()) {
throw new IllegalArgumentException("Parameter type mismatch for constructor "
+ ctor + ". Attempt to set a null value for Arg["
+ index + "]. Expected a value of type: " + type.getName());
}
} else if (type.isPrimitive()) {
if (! InterceptorUtil.hasCompatiblePrimitiveWrapper(type, params[index].getClass())) {
throw new IllegalArgumentException("Parameter type mismatch for constructor "
+ ctor + ". Arg["
+ index + "] type: " + params[index].getClass().getName()
+ " is not compatible with the expected type: " + type.getName());
}
} else if (! type.isAssignableFrom(params[index].getClass())) {
throw new IllegalArgumentException("Parameter type mismatch for constructor "
+ ctor + ". Arg["
+ index + "] type: " + params[index].getClass().getName()
+ " does not match the expected type: " + type.getName());
}
index++;
}
}
}
}