Question

I have a spring beans configuration file where I define the following jackson classes as spring beans.
For some reason on run-time the filterProvider bean is instantiated without the map argument.
You can see from the docs that the SimpleFilterProvider does have such a constructor and that SimpleBeanPropertyFilter implements BeanPropertyFilter.

<bean id="productAttributesAndAdvertiserNameFilter" class="org.codehaus.jackson.map.ser.impl.SimpleBeanPropertyFilter" factory-method="filterOutAllExcept">
        <constructor-arg value="name"/>
    </bean>
    <bean id="offerIdFilter" class="org.codehaus.jackson.map.ser.impl.SimpleBeanPropertyFilter" factory-method="filterOutAllExcept">
        <constructor-arg value="id"/>
    </bean>
    <bean id="filterProvider" class="org.codehaus.jackson.map.ser.impl.SimpleFilterProvider">
        <constructor-arg>
            <util:map value-type="org.codehaus.jackson.map.ser.BeanPropertyFilter">
                <entry key="onlyNameFilter" value-ref="productAttributesAndAdvertiserNameFilter" />
                <entry key="onlyIdFilter" value-ref="offerIdFilter" />
            </util:map>
        </constructor-arg>
    </bean>

Update:
As of Jackson 1.9.5 this issue is fixed (thanks Tatu)

Any help would be appreciated.

Answer 1

Looks like you’ve found a bug in SimpleFilterProvider.

I just downloaded the latest sources (1.9.4) and the constructors are defined as such:

public SimpleFilterProvider() {
    _filtersById = new HashMap<String,BeanPropertyFilter>();
}

/**
 * @param mapping Mapping from id to filter; used as is, no copy is made.
 */
public SimpleFilterProvider(Map<String,BeanPropertyFilter> mapping) {
    _filtersById = new HashMap<String,BeanPropertyFilter>();
}

The constructor which takes the mapping ignores it… (i.e. javadoc is incorrect)