/**
* Method called to serialize fields, when the value type is statically known, so that value
* serializer is passed and does not need to be fetched from provider.
*/
public void serializeFieldsUsing(
Map<?, ?> value, JsonGenerator gen, SerializerProvider provider, JsonSerializer<Object> ser)
throws IOException {
final JsonSerializer<Object> keySerializer = _keySerializer;
final Set<String> ignored = _ignoredEntries;
final TypeSerializer typeSer = _valueTypeSerializer;
for (Map.Entry<?, ?> entry : value.entrySet()) {
Object keyElem = entry.getKey();
if (ignored != null && ignored.contains(keyElem)) continue;
if (keyElem == null) {
provider.findNullKeySerializer(_keyType, _property).serialize(null, gen, provider);
} else {
keySerializer.serialize(keyElem, gen, provider);
}
final Object valueElem = entry.getValue();
if (valueElem == null) {
provider.defaultSerializeNull(gen);
} else {
try {
if (typeSer == null) {
ser.serialize(valueElem, gen, provider);
} else {
ser.serializeWithType(valueElem, gen, provider, typeSer);
}
} catch (Exception e) {
wrapAndThrow(provider, e, value, String.valueOf(keyElem));
}
}
}
}
protected void _writeNullKeyedEntry(JsonGenerator gen, SerializerProvider provider, Object value)
throws IOException {
JsonSerializer<Object> keySerializer = provider.findNullKeySerializer(_keyType, _property);
JsonSerializer<Object> valueSer;
if (value == null) {
if (_suppressNulls) {
return;
}
valueSer = provider.getDefaultNullValueSerializer();
} else {
valueSer = _valueSerializer;
if (valueSer == null) {
valueSer = _findSerializer(provider, value);
}
if (_suppressableValue == MARKER_FOR_EMPTY) {
if (valueSer.isEmpty(provider, value)) {
return;
}
} else if ((_suppressableValue != null) && (_suppressableValue.equals(value))) {
return;
}
}
try {
keySerializer.serialize(null, gen, provider);
valueSer.serialize(value, gen, provider);
} catch (Exception e) {
wrapAndThrow(provider, e, value, "");
}
}
/**
* Helper method used when we have a JSON Filter to use for potentially filtering out Map entries.
*
* @since 2.5
*/
public void serializeFilteredFields(
Map<?, ?> value,
JsonGenerator gen,
SerializerProvider provider,
PropertyFilter filter,
Object suppressableValue) // since 2.5
throws IOException {
final Set<String> ignored = _ignoredEntries;
final MapProperty prop = new MapProperty(_valueTypeSerializer, _property);
final boolean checkEmpty = (MARKER_FOR_EMPTY == suppressableValue);
for (Map.Entry<?, ?> entry : value.entrySet()) {
// First, serialize key; unless ignorable by key
final Object keyElem = entry.getKey();
if (ignored != null && ignored.contains(keyElem)) continue;
JsonSerializer<Object> keySerializer;
if (keyElem == null) {
keySerializer = provider.findNullKeySerializer(_keyType, _property);
} else {
keySerializer = _keySerializer;
}
// or by value; nulls often suppressed
final Object valueElem = entry.getValue();
JsonSerializer<Object> valueSer;
// And then value
if (valueElem == null) {
if (_suppressNulls) {
continue;
}
valueSer = provider.getDefaultNullValueSerializer();
} else {
valueSer = _valueSerializer;
if (valueSer == null) {
valueSer = _findSerializer(provider, valueElem);
}
// also may need to skip non-empty values:
if (checkEmpty) {
if (valueSer.isEmpty(provider, valueElem)) {
continue;
}
} else if (suppressableValue != null) {
if (suppressableValue.equals(valueElem)) {
continue;
}
}
}
// and with that, ask filter to handle it
prop.reset(keyElem, keySerializer, valueSer);
try {
filter.serializeAsField(valueElem, gen, provider, prop);
} catch (Exception e) {
wrapAndThrow(provider, e, value, String.valueOf(keyElem));
}
}
}
@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;
}
/** Serialization method called when exclusion filtering needs to be applied. */
public void serializeOptionalFields(
Map<?, ?> value, JsonGenerator gen, SerializerProvider provider, Object suppressableValue)
throws IOException {
// If value type needs polymorphic type handling, some more work needed:
if (_valueTypeSerializer != null) {
serializeTypedFields(value, gen, provider, suppressableValue);
return;
}
final Set<String> ignored = _ignoredEntries;
final boolean checkEmpty = (MARKER_FOR_EMPTY == suppressableValue);
for (Map.Entry<?, ?> entry : value.entrySet()) {
// First find key serializer
final Object keyElem = entry.getKey();
JsonSerializer<Object> keySerializer;
if (keyElem == null) {
keySerializer = provider.findNullKeySerializer(_keyType, _property);
} else {
if (ignored != null && ignored.contains(keyElem)) continue;
keySerializer = _keySerializer;
}
// Then value serializer
final Object valueElem = entry.getValue();
JsonSerializer<Object> valueSer;
if (valueElem == null) {
if (_suppressNulls) { // all suppressions include null-suppression
continue;
}
valueSer = provider.getDefaultNullValueSerializer();
} else {
valueSer = _valueSerializer;
if (valueSer == null) {
valueSer = _findSerializer(provider, valueElem);
}
// also may need to skip non-empty values:
if (checkEmpty) {
if (valueSer.isEmpty(provider, valueElem)) {
continue;
}
} else if (suppressableValue != null) {
if (suppressableValue.equals(valueElem)) {
continue;
}
}
}
// and then serialize, if all went well
try {
keySerializer.serialize(keyElem, gen, provider);
valueSer.serialize(valueElem, gen, provider);
} catch (Exception e) {
wrapAndThrow(provider, e, value, String.valueOf(keyElem));
}
}
}
/** Method called to serialize fields, when the value type is not statically known. */
public void serializeFields(Map<?, ?> value, JsonGenerator jgen, SerializerProvider provider)
throws IOException, JsonGenerationException {
// If value type needs polymorphic type handling, some more work needed:
if (_valueTypeSerializer != null) {
serializeTypedFields(value, jgen, provider);
return;
}
final JsonSerializer<Object> keySerializer = _keySerializer;
final HashSet<String> ignored = _ignoredEntries;
final boolean skipNulls = !provider.isEnabled(SerializationFeature.WRITE_NULL_MAP_VALUES);
PropertySerializerMap serializers = _dynamicValueSerializers;
for (Map.Entry<?, ?> entry : value.entrySet()) {
Object valueElem = entry.getValue();
// First, serialize key
Object keyElem = entry.getKey();
if (keyElem == null) {
provider.findNullKeySerializer(_keyType, _property).serialize(null, jgen, provider);
} else {
// [JACKSON-314] skip entries with null values?
if (skipNulls && valueElem == null) continue;
// One twist: is entry ignorable? If so, skip
if (ignored != null && ignored.contains(keyElem)) continue;
keySerializer.serialize(keyElem, jgen, provider);
}
// And then value
if (valueElem == null) {
provider.defaultSerializeNull(jgen);
} else {
Class<?> cc = valueElem.getClass();
JsonSerializer<Object> serializer = serializers.serializerFor(cc);
if (serializer == null) {
if (_valueType.hasGenericTypes()) {
serializer =
_findAndAddDynamic(
serializers, provider.constructSpecializedType(_valueType, cc), provider);
} else {
serializer = _findAndAddDynamic(serializers, cc, provider);
}
serializers = _dynamicValueSerializers;
}
try {
serializer.serialize(valueElem, jgen, provider);
} catch (Exception e) {
// [JACKSON-55] Need to add reference information
String keyDesc = "" + keyElem;
wrapAndThrow(provider, e, value, keyDesc);
}
}
}
}
/** @since 2.5 */
public void serializeTypedFields(
Map<?, ?> value,
JsonGenerator gen,
SerializerProvider provider,
Object suppressableValue) // since 2.5
throws IOException {
final Set<String> ignored = _ignoredEntries;
final boolean checkEmpty = (MARKER_FOR_EMPTY == suppressableValue);
for (Map.Entry<?, ?> entry : value.entrySet()) {
Object keyElem = entry.getKey();
JsonSerializer<Object> keySerializer;
if (keyElem == null) {
keySerializer = provider.findNullKeySerializer(_keyType, _property);
} else {
// One twist: is entry ignorable? If so, skip
if (ignored != null && ignored.contains(keyElem)) continue;
keySerializer = _keySerializer;
}
final Object valueElem = entry.getValue();
// And then value
JsonSerializer<Object> valueSer;
if (valueElem == null) {
if (_suppressNulls) { // all suppression include null suppression
continue;
}
valueSer = provider.getDefaultNullValueSerializer();
} else {
valueSer = _valueSerializer;
if (valueSer == null) {
valueSer = _findSerializer(provider, valueElem);
}
// also may need to skip non-empty values:
if (checkEmpty) {
if (valueSer.isEmpty(provider, valueElem)) {
continue;
}
} else if (suppressableValue != null) {
if (suppressableValue.equals(valueElem)) {
continue;
}
}
}
keySerializer.serialize(keyElem, gen, provider);
try {
valueSer.serializeWithType(valueElem, gen, provider, _valueTypeSerializer);
} catch (Exception e) {
wrapAndThrow(provider, e, value, String.valueOf(keyElem));
}
}
}
protected void serializeTypedFields(
Map<?, ?> value, JsonGenerator jgen, SerializerProvider provider)
throws IOException, JsonGenerationException {
final JsonSerializer<Object> keySerializer = _keySerializer;
JsonSerializer<Object> prevValueSerializer = null;
Class<?> prevValueClass = null;
final HashSet<String> ignored = _ignoredEntries;
final boolean skipNulls = !provider.isEnabled(SerializationFeature.WRITE_NULL_MAP_VALUES);
for (Map.Entry<?, ?> entry : value.entrySet()) {
Object valueElem = entry.getValue();
// First, serialize key
Object keyElem = entry.getKey();
if (keyElem == null) {
provider.findNullKeySerializer(_keyType, _property).serialize(null, jgen, provider);
} else {
// [JACKSON-314] also may need to skip entries with null values
if (skipNulls && valueElem == null) continue;
// One twist: is entry ignorable? If so, skip
if (ignored != null && ignored.contains(keyElem)) continue;
keySerializer.serialize(keyElem, jgen, provider);
}
// And then value
if (valueElem == null) {
provider.defaultSerializeNull(jgen);
} else {
Class<?> cc = valueElem.getClass();
JsonSerializer<Object> currSerializer;
if (cc == prevValueClass) {
currSerializer = prevValueSerializer;
} else {
currSerializer = provider.findValueSerializer(cc, _property);
prevValueSerializer = currSerializer;
prevValueClass = cc;
}
try {
currSerializer.serializeWithType(valueElem, jgen, provider, _valueTypeSerializer);
} catch (Exception e) {
// [JACKSON-55] Need to add reference information
String keyDesc = "" + keyElem;
wrapAndThrow(provider, e, value, keyDesc);
}
}
}
}
/**
* The method to be called by {@link ObjectMapper} and {@link ObjectWriter} for serializing given
* value, using serializers that this provider has access to (via caching and/or creating new
* serializers as need be).
*/
public void serializeValue(JsonGenerator jgen, Object value)
throws IOException, JsonGenerationException {
JsonSerializer<Object> ser;
final boolean wrap;
if (value == null) { // no type provided; must just use the default null serializer
ser = getDefaultNullValueSerializer();
wrap = false; // no name to use for wrapping; can't do!
} else {
Class<?> cls = value.getClass();
// true, since we do want to cache root-level typed serializers (ditto for null property)
ser = findTypedValueSerializer(cls, true, null);
// Ok: should we wrap result in an additional property ("root name")?
String rootName = _config.getRootName();
if (rootName == null) { // not explicitly specified
// [JACKSON-163]
wrap = _config.isEnabled(SerializationFeature.WRAP_ROOT_VALUE);
if (wrap) {
jgen.writeStartObject();
jgen.writeFieldName(_rootNames.findRootName(value.getClass(), _config));
}
} else if (rootName.length() == 0) {
wrap = false;
} else { // [JACKSON-764]
// empty String means explicitly disabled; non-empty that it is enabled
wrap = true;
jgen.writeStartObject();
jgen.writeFieldName(rootName);
}
}
try {
ser.serialize(value, jgen, this);
if (wrap) {
jgen.writeEndObject();
}
} catch (IOException ioe) { // As per [JACKSON-99], pass IOException and subtypes as-is
throw ioe;
} catch (Exception e) { // but wrap RuntimeExceptions, to get path information
String msg = e.getMessage();
if (msg == null) {
msg = "[no message for " + e.getClass().getName() + "]";
}
throw new JsonMappingException(msg, e);
}
}
private final void serializeUsingCustom(
List<String> value, JsonGenerator jgen, SerializerProvider provider, int len)
throws IOException, JsonGenerationException {
int i = 0;
try {
final JsonSerializer<String> ser = _serializer;
for (i = 0; i < len; ++i) {
String str = value.get(i);
if (str == null) {
provider.defaultSerializeNull(jgen);
} else {
ser.serialize(str, jgen, provider);
}
}
} catch (Exception e) {
wrapAndThrow(provider, e, value, i);
}
}
/**
* General-purpose serialization for contents, where we do not necessarily know the value
* serialization, but we do know that no value suppression is needed (which simplifies processing
* a bit)
*/
public void serializeFields(Map<?, ?> value, JsonGenerator gen, SerializerProvider provider)
throws IOException {
// If value type needs polymorphic type handling, some more work needed:
if (_valueTypeSerializer != null) {
serializeTypedFields(value, gen, provider, null);
return;
}
final JsonSerializer<Object> keySerializer = _keySerializer;
final Set<String> ignored = _ignoredEntries;
Object keyElem = null;
try {
for (Map.Entry<?, ?> entry : value.entrySet()) {
Object valueElem = entry.getValue();
// First, serialize key
keyElem = entry.getKey();
if (keyElem == null) {
provider.findNullKeySerializer(_keyType, _property).serialize(null, gen, provider);
} else {
// One twist: is entry ignorable? If so, skip
if ((ignored != null) && ignored.contains(keyElem)) {
continue;
}
keySerializer.serialize(keyElem, gen, provider);
}
// And then value
if (valueElem == null) {
provider.defaultSerializeNull(gen);
continue;
}
JsonSerializer<Object> serializer = _valueSerializer;
if (serializer == null) {
serializer = _findSerializer(provider, valueElem);
}
serializer.serialize(valueElem, gen, provider);
}
} catch (Exception e) { // Add reference information
wrapAndThrow(provider, e, value, String.valueOf(keyElem));
}
}
/**
* The method to be called by {@link ObjectMapper} and {@link ObjectWriter} for serializing given
* value (assumed to be of specified root type, instead of runtime type of value), using
* serializers that this provider has access to (via caching and/or creating new serializers as
* need be),
*
* @param rootType Type to use for locating serializer to use, instead of actual runtime type.
* Must be actual type, or one of its super types
*/
public void serializeValue(JsonGenerator jgen, Object value, JavaType rootType)
throws IOException, JsonGenerationException {
final boolean wrap;
JsonSerializer<Object> ser;
if (value == null) {
ser = getDefaultNullValueSerializer();
wrap = false;
} else {
// Let's ensure types are compatible at this point
if (!rootType.getRawClass().isAssignableFrom(value.getClass())) {
_reportIncompatibleRootType(value, rootType);
}
// root value, not reached via property:
ser = findTypedValueSerializer(rootType, true, null);
// [JACKSON-163]
wrap = _config.isEnabled(SerializationFeature.WRAP_ROOT_VALUE);
if (wrap) {
jgen.writeStartObject();
jgen.writeFieldName(_rootNames.findRootName(rootType, _config));
}
}
try {
ser.serialize(value, jgen, this);
if (wrap) {
jgen.writeEndObject();
}
} catch (IOException ioe) { // no wrapping for IO (and derived)
throw ioe;
} catch (Exception e) { // but others do need to be, to get path etc
String msg = e.getMessage();
if (msg == null) {
msg = "[no message for " + e.getClass().getName() + "]";
}
throw new JsonMappingException(msg, e);
}
}
/**
* Method called to serialize fields, when the value type is statically known, so that value
* serializer is passed and does not need to be fetched from provider.
*/
protected void serializeFieldsUsing(
Map<?, ?> value, JsonGenerator jgen, SerializerProvider provider, JsonSerializer<Object> ser)
throws IOException, JsonGenerationException {
final JsonSerializer<Object> keySerializer = _keySerializer;
final HashSet<String> ignored = _ignoredEntries;
final TypeSerializer typeSer = _valueTypeSerializer;
final boolean skipNulls = !provider.isEnabled(SerializationFeature.WRITE_NULL_MAP_VALUES);
for (Map.Entry<?, ?> entry : value.entrySet()) {
Object valueElem = entry.getValue();
Object keyElem = entry.getKey();
if (keyElem == null) {
provider.findNullKeySerializer(_keyType, _property).serialize(null, jgen, provider);
} else {
// [JACKSON-314] also may need to skip entries with null values
if (skipNulls && valueElem == null) continue;
if (ignored != null && ignored.contains(keyElem)) continue;
keySerializer.serialize(keyElem, jgen, provider);
}
if (valueElem == null) {
provider.defaultSerializeNull(jgen);
} else {
try {
if (typeSer == null) {
ser.serialize(valueElem, jgen, provider);
} else {
ser.serializeWithType(valueElem, jgen, provider, typeSer);
}
} catch (Exception e) {
// [JACKSON-55] Need to add reference information
String keyDesc = "" + keyElem;
wrapAndThrow(provider, e, value, keyDesc);
}
}
}
}