@Override
public boolean isEmpty(SerializerProvider prov, Map<?, ?> value) {
if (value.isEmpty()) {
return true;
}
// 05-Nove-2015, tatu: Simple cases are cheap, but for recursive
// emptiness checking we actually need to see if values are empty as well.
Object supp = _suppressableValue;
if ((supp == null) && !_suppressNulls) {
return false;
}
JsonSerializer<Object> valueSer = _valueSerializer;
final boolean checkEmpty = (MARKER_FOR_EMPTY == supp);
if (valueSer != null) {
for (Object elemValue : value.values()) {
if (elemValue == null) {
if (_suppressNulls) {
continue;
}
return false;
}
if (checkEmpty) {
if (!valueSer.isEmpty(prov, elemValue)) {
return false;
}
} else if ((supp == null) || !supp.equals(value)) {
return false;
}
}
return true;
}
// But if not statically known, try this:
for (Object elemValue : value.values()) {
if (elemValue == null) {
if (_suppressNulls) {
continue;
}
return false;
}
try {
valueSer = _findSerializer(prov, elemValue);
} catch (JsonMappingException e) { // Ugh... can not just throw as-is, so...
// 05-Nov-2015, tatu: For now, probably best not to assume empty then
return false;
}
if (checkEmpty) {
if (!valueSer.isEmpty(prov, elemValue)) {
return false;
}
} else if ((supp == null) || !supp.equals(value)) {
return false;
}
}
return true;
}
@Override
public void serialize(Map<?, ?> value, JsonGenerator jgen, SerializerProvider provider)
throws IOException, JsonGenerationException {
jgen.writeStartObject();
if (!value.isEmpty()) {
if (provider.isEnabled(SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS)) {
value = _orderEntries(value);
}
if (_valueSerializer != null) {
serializeFieldsUsing(value, jgen, provider, _valueSerializer);
} else {
serializeFields(value, jgen, provider);
}
}
jgen.writeEndObject();
}
@Override
public void serializeWithType(
Map<?, ?> value, JsonGenerator jgen, SerializerProvider provider, TypeSerializer typeSer)
throws IOException, JsonGenerationException {
typeSer.writeTypePrefixForObject(value, jgen);
if (!value.isEmpty()) {
if (provider.isEnabled(SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS)) {
value = _orderEntries(value);
}
if (_valueSerializer != null) {
serializeFieldsUsing(value, jgen, provider, _valueSerializer);
} else {
serializeFields(value, jgen, provider);
}
}
typeSer.writeTypeSuffixForObject(value, jgen);
}
@Override
public void serialize(Map<?, ?> value, JsonGenerator gen, SerializerProvider provider)
throws IOException {
gen.writeStartObject(value);
if (!value.isEmpty()) {
if (_sortKeys || provider.isEnabled(SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS)) {
value = _orderEntries(value, gen, provider);
}
PropertyFilter pf;
if ((_filterId != null) && (pf = findPropertyFilter(provider, _filterId, value)) != null) {
serializeFilteredFields(value, gen, provider, pf, _suppressableValue);
} else if ((_suppressableValue != null) || _suppressNulls) {
serializeOptionalFields(value, gen, provider, _suppressableValue);
} else if (_valueSerializer != null) {
serializeFieldsUsing(value, gen, provider, _valueSerializer);
} else {
serializeFields(value, gen, provider);
}
}
gen.writeEndObject();
}
@Override
public void serializeWithType(
Map<?, ?> value, JsonGenerator gen, SerializerProvider provider, TypeSerializer typeSer)
throws IOException {
typeSer.writeTypePrefixForObject(value, gen);
// [databind#631]: Assign current value, to be accessible by custom serializers
gen.setCurrentValue(value);
if (!value.isEmpty()) {
if (_sortKeys || provider.isEnabled(SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS)) {
value = _orderEntries(value, gen, provider);
}
PropertyFilter pf;
if ((_filterId != null) && (pf = findPropertyFilter(provider, _filterId, value)) != null) {
serializeFilteredFields(value, gen, provider, pf, _suppressableValue);
} else if ((_suppressableValue != null) || _suppressNulls) {
serializeOptionalFields(value, gen, provider, _suppressableValue);
} else if (_valueSerializer != null) {
serializeFieldsUsing(value, gen, provider, _valueSerializer);
} else {
serializeFields(value, gen, provider);
}
}
typeSer.writeTypeSuffixForObject(value, gen);
}
@Override
public boolean isEmpty(Map<?, ?> value) {
return (value == null) || value.isEmpty();
}