MapFieldPersistenceProvider.java 文件源码

protected Class<?> getValueType(PopulateValueRequest populateValueRequest, Class<?> startingValueType) {
    Class<?> valueType = startingValueType;
    if (!StringUtils.isEmpty(populateValueRequest.getMetadata().getToOneTargetProperty())) {
        Field nestedField = FieldManager.getSingleField(valueType, populateValueRequest.getMetadata()
                .getToOneTargetProperty());
        ManyToOne manyToOne = nestedField.getAnnotation(ManyToOne.class);
        if (manyToOne != null && !manyToOne.targetEntity().getName().equals(void.class.getName())) {
            valueType = manyToOne.targetEntity();
        } else {
            OneToOne oneToOne = nestedField.getAnnotation(OneToOne.class);
            if (oneToOne != null && !oneToOne.targetEntity().getName().equals(void.class.getName())) {
                valueType = oneToOne.targetEntity();
            }
        }
    }
    return valueType;
}