Example usage for com.fasterxml.jackson.databind.ser.impl PropertySerializerMap serializerFor

Introduction

In this page you can find the example usage for com.fasterxml.jackson.databind.ser.impl PropertySerializerMap serializerFor.

Prototype

public abstract JsonSerializer<Object> serializerFor(Class<?> paramClass);

Source Link

Usage

From source file:de.ks.flatadocdb.defaults.json.RelationCollectionPropertyWriter.java

@Override
public void serializeAsField(Object bean, JsonGenerator gen, SerializerProvider prov) throws Exception {
    Object value = (_accessorMethod == null) ? _field.get(bean) : _accessorMethod.invoke(bean);
    if (value instanceof Collection) {
        Collection<String> ids;
        if (value instanceof List) {
            ids = new ArrayList<>();
        } else {//from w  w w.  j a  v  a2s.com
            ids = new HashSet<>();
        }
        for (Object object : ((Collection) value)) {
            if (object != null) {
                EntityDescriptor entityDescriptor = metaModel.getEntityDescriptor(object.getClass());
                String id = entityDescriptor.getId(object);
                log.trace("Replaced object {} of collection by relation id {}.", object, id);
                ids.add(id);
            }
        }
        value = ids;
    } else if (value != null) {
        EntityDescriptor entityDescriptor = metaModel.getEntityDescriptor(value.getClass());
        String id = entityDescriptor.getId(value);
        value = id;
        log.trace("Replaced single object {} by relation id {}.", value, id);
    }
    // Null handling is bit different, check that first
    if (value == null) {
        if (_nullSerializer != null) {
            gen.writeFieldName(_name);
            _nullSerializer.serialize(null, gen, prov);
        }
        return;
    }
    // then find serializer to use
    JsonSerializer<Object> ser = _serializer;
    if (ser == null) {
        Class<?> cls = value.getClass();
        PropertySerializerMap m = _dynamicSerializers;
        ser = m.serializerFor(cls);
        if (ser == null) {
            ser = _findAndAddDynamic(m, cls, prov);
        }
    }
    // and then see if we must suppress certain values (default, empty)
    if (_suppressableValue != null) {
        if (MARKER_FOR_EMPTY == _suppressableValue) {
            if (ser.isEmpty(prov, value)) {
                return;
            }
        } else if (_suppressableValue.equals(value)) {
            return;
        }
    }
    // For non-nulls: simple check for direct cycles
    if (value == bean) {
        // three choices: exception; handled by call; or pass-through
        if (_handleSelfReference(bean, gen, prov, ser)) {
            return;
        }
    }
    gen.writeFieldName(_name);
    if (_typeSerializer == null) {
        ser.serialize(value, gen, prov);
    } else {
        ser.serializeWithType(value, gen, prov, _typeSerializer);
    }
}

---