/**
* Resolve the constructor arguments for this bean into the resolvedValues object. This may
* involve looking up other beans.
*
* <p>This method is also used for handling invocations of static factory methods.
*/
private int resolveConstructorArguments(
String beanName,
RootBeanDefinition mbd,
BeanWrapper bw,
ConstructorArgumentValues cargs,
ConstructorArgumentValues resolvedValues) {
TypeConverter converter =
(this.beanFactory.getCustomTypeConverter() != null
? this.beanFactory.getCustomTypeConverter()
: bw);
BeanDefinitionValueResolver valueResolver =
new BeanDefinitionValueResolver(this.beanFactory, beanName, mbd, converter);
int minNrOfArgs = cargs.getArgumentCount();
for (Map.Entry<Integer, ConstructorArgumentValues.ValueHolder> entry :
cargs.getIndexedArgumentValues().entrySet()) {
int index = entry.getKey();
if (index < 0) {
throw new BeanCreationException(
mbd.getResourceDescription(), beanName, "Invalid constructor argument index: " + index);
}
if (index > minNrOfArgs) {
minNrOfArgs = index + 1;
}
ConstructorArgumentValues.ValueHolder valueHolder = entry.getValue();
if (valueHolder.isConverted()) {
resolvedValues.addIndexedArgumentValue(index, valueHolder);
} else {
Object resolvedValue =
valueResolver.resolveValueIfNecessary("constructor argument", valueHolder.getValue());
ConstructorArgumentValues.ValueHolder resolvedValueHolder =
new ConstructorArgumentValues.ValueHolder(
resolvedValue, valueHolder.getType(), valueHolder.getName());
resolvedValueHolder.setSource(valueHolder);
resolvedValues.addIndexedArgumentValue(index, resolvedValueHolder);
}
}
for (ConstructorArgumentValues.ValueHolder valueHolder : cargs.getGenericArgumentValues()) {
if (valueHolder.isConverted()) {
resolvedValues.addGenericArgumentValue(valueHolder);
} else {
Object resolvedValue =
valueResolver.resolveValueIfNecessary("constructor argument", valueHolder.getValue());
ConstructorArgumentValues.ValueHolder resolvedValueHolder =
new ConstructorArgumentValues.ValueHolder(
resolvedValue, valueHolder.getType(), valueHolder.getName());
resolvedValueHolder.setSource(valueHolder);
resolvedValues.addGenericArgumentValue(resolvedValueHolder);
}
}
return minNrOfArgs;
}
/** Resolve the prepared arguments stored in the given bean definition. */
private Object[] resolvePreparedArguments(
String beanName,
RootBeanDefinition mbd,
BeanWrapper bw,
Member methodOrCtor,
Object[] argsToResolve) {
Class<?>[] paramTypes =
(methodOrCtor instanceof Method
? ((Method) methodOrCtor).getParameterTypes()
: ((Constructor<?>) methodOrCtor).getParameterTypes());
TypeConverter converter =
(this.beanFactory.getCustomTypeConverter() != null
? this.beanFactory.getCustomTypeConverter()
: bw);
BeanDefinitionValueResolver valueResolver =
new BeanDefinitionValueResolver(this.beanFactory, beanName, mbd, converter);
Object[] resolvedArgs = new Object[argsToResolve.length];
for (int argIndex = 0; argIndex < argsToResolve.length; argIndex++) {
Object argValue = argsToResolve[argIndex];
MethodParameter methodParam = MethodParameter.forMethodOrConstructor(methodOrCtor, argIndex);
GenericTypeResolver.resolveParameterType(methodParam, methodOrCtor.getDeclaringClass());
if (argValue instanceof AutowiredArgumentMarker) {
argValue = resolveAutowiredArgument(methodParam, beanName, null, converter);
} else if (argValue instanceof BeanMetadataElement) {
argValue = valueResolver.resolveValueIfNecessary("constructor argument", argValue);
} else if (argValue instanceof String) {
argValue = this.beanFactory.evaluateBeanDefinitionString((String) argValue, mbd);
}
Class<?> paramType = paramTypes[argIndex];
try {
resolvedArgs[argIndex] = converter.convertIfNecessary(argValue, paramType, methodParam);
} catch (TypeMismatchException ex) {
String methodType =
(methodOrCtor instanceof Constructor ? "constructor" : "factory method");
throw new UnsatisfiedDependencyException(
mbd.getResourceDescription(),
beanName,
argIndex,
paramType,
"Could not convert "
+ methodType
+ " argument value of type ["
+ ObjectUtils.nullSafeClassName(argValue)
+ "] to required type ["
+ paramType.getName()
+ "]: "
+ ex.getMessage());
}
}
return resolvedArgs;
}
