/** Like {@link #writeTo} but uses MessageSet wire format. */
public void writeMessageSetTo(final CodedOutputStream output) throws IOException {
for (int i = 0; i < fields.getNumArrayEntries(); i++) {
writeMessageSetTo(fields.getArrayEntryAt(i), output);
}
for (final Map.Entry<FieldDescriptorType, Object> entry : fields.getOverflowEntries()) {
writeMessageSetTo(entry, output);
}
}
/** See {@link Message#writeTo(CodedOutputStream)}. */
public void writeTo(final CodedOutputStream output) throws IOException {
for (int i = 0; i < fields.getNumArrayEntries(); i++) {
final Map.Entry<FieldDescriptorType, Object> entry = fields.getArrayEntryAt(i);
writeField(entry.getKey(), entry.getValue(), output);
}
for (final Map.Entry<FieldDescriptorType, Object> entry : fields.getOverflowEntries()) {
writeField(entry.getKey(), entry.getValue(), output);
}
}
/** Like {@link #getSerializedSize} but uses MessageSet wire format. */
public int getMessageSetSerializedSize() {
int size = 0;
for (int i = 0; i < fields.getNumArrayEntries(); i++) {
size += getMessageSetSerializedSize(fields.getArrayEntryAt(i));
}
for (final Map.Entry<FieldDescriptorType, Object> entry : fields.getOverflowEntries()) {
size += getMessageSetSerializedSize(entry);
}
return size;
}
/**
* See {@link Message#getSerializedSize()}. It's up to the caller to cache the resulting size if
* desired.
*/
public int getSerializedSize() {
int size = 0;
for (int i = 0; i < fields.getNumArrayEntries(); i++) {
final Map.Entry<FieldDescriptorType, Object> entry = fields.getArrayEntryAt(i);
size += computeFieldSize(entry.getKey(), entry.getValue());
}
for (final Map.Entry<FieldDescriptorType, Object> entry : fields.getOverflowEntries()) {
size += computeFieldSize(entry.getKey(), entry.getValue());
}
return size;
}
/**
* See {@link Message#isInitialized()}. Note: Since {@code FieldSet} itself does not have any way
* of knowing about required fields that aren't actually present in the set, it is up to the
* caller to check that all required fields are present.
*/
public boolean isInitialized() {
for (int i = 0; i < fields.getNumArrayEntries(); i++) {
if (!isInitialized(fields.getArrayEntryAt(i))) {
return false;
}
}
for (final Map.Entry<FieldDescriptorType, Object> entry : fields.getOverflowEntries()) {
if (!isInitialized(entry)) {
return false;
}
}
return true;
}
/**
* Clones the FieldSet. The returned FieldSet will be mutable even if the original FieldSet was
* immutable.
*
* @return the newly cloned FieldSet
*/
@Override
public FieldSet<FieldDescriptorType> clone() {
// We can't just call fields.clone because List objects in the map
// should not be shared.
FieldSet<FieldDescriptorType> clone = FieldSet.newFieldSet();
for (int i = 0; i < fields.getNumArrayEntries(); i++) {
Map.Entry<FieldDescriptorType, Object> entry = fields.getArrayEntryAt(i);
FieldDescriptorType descriptor = entry.getKey();
clone.setField(descriptor, entry.getValue());
}
for (Map.Entry<FieldDescriptorType, Object> entry : fields.getOverflowEntries()) {
FieldDescriptorType descriptor = entry.getKey();
clone.setField(descriptor, entry.getValue());
}
return clone;
}
/** Useful for implementing {@link Message#hasField(Descriptors.FieldDescriptor)}. */
public boolean hasField(final FieldDescriptorType descriptor) {
if (descriptor.isRepeated()) {
throw new IllegalArgumentException("hasField() can only be called on non-repeated fields.");
}
return fields.get(descriptor) != null;
}
/** Make this FieldSet immutable from this point forward. */
@SuppressWarnings("unchecked")
public void makeImmutable() {
if (isImmutable) {
return;
}
fields.makeImmutable();
isImmutable = true;
}
/**
* Useful for implementing {@link
* Message.Builder#addRepeatedField(Descriptors.FieldDescriptor,Object)}.
*/
@SuppressWarnings("unchecked")
public void addRepeatedField(final FieldDescriptorType descriptor, final Object value) {
if (!descriptor.isRepeated()) {
throw new IllegalArgumentException(
"addRepeatedField() can only be called on repeated fields.");
}
verifyType(descriptor.getLiteType(), value);
final Object existingValue = fields.get(descriptor);
List list;
if (existingValue == null) {
list = new ArrayList();
fields.put(descriptor, list);
} else {
list = (List) existingValue;
}
list.add(value);
}
@SuppressWarnings("unchecked")
private void mergeFromField(final Map.Entry<FieldDescriptorType, Object> entry) {
final FieldDescriptorType descriptor = entry.getKey();
final Object otherValue = entry.getValue();
if (descriptor.isRepeated()) {
Object value = fields.get(descriptor);
if (value == null) {
// Our list is empty, but we still need to make a defensive copy of
// the other list since we don't know if the other FieldSet is still
// mutable.
fields.put(descriptor, new ArrayList((List) otherValue));
} else {
// Concatenate the lists.
((List) value).addAll((List) otherValue);
}
} else if (descriptor.getLiteJavaType() == WireFormat.JavaType.MESSAGE) {
Object value = fields.get(descriptor);
if (value == null) {
fields.put(descriptor, otherValue);
} else {
// Merge the messages.
fields.put(
descriptor,
descriptor
.internalMergeFrom(((MessageLite) value).toBuilder(), (MessageLite) otherValue)
.build());
}
} else {
fields.put(descriptor, otherValue);
}
}
/** Useful for implementing {@link Message#getRepeatedFieldCount(Descriptors.FieldDescriptor)}. */
public int getRepeatedFieldCount(final FieldDescriptorType descriptor) {
if (!descriptor.isRepeated()) {
throw new IllegalArgumentException(
"getRepeatedField() can only be called on repeated fields.");
}
final Object value = fields.get(descriptor);
if (value == null) {
return 0;
} else {
return ((List<?>) value).size();
}
}
/** Useful for implementing {@link Message#getRepeatedField(Descriptors.FieldDescriptor,int)}. */
public Object getRepeatedField(final FieldDescriptorType descriptor, final int index) {
if (!descriptor.isRepeated()) {
throw new IllegalArgumentException(
"getRepeatedField() can only be called on repeated fields.");
}
final Object value = fields.get(descriptor);
if (value == null) {
throw new IndexOutOfBoundsException();
} else {
return ((List<?>) value).get(index);
}
}
/**
* Useful for implementing {@link
* Message.Builder#setRepeatedField(Descriptors.FieldDescriptor,int,Object)}.
*/
@SuppressWarnings("unchecked")
public void setRepeatedField(
final FieldDescriptorType descriptor, final int index, final Object value) {
if (!descriptor.isRepeated()) {
throw new IllegalArgumentException(
"getRepeatedField() can only be called on repeated fields.");
}
final Object list = fields.get(descriptor);
if (list == null) {
throw new IndexOutOfBoundsException();
}
verifyType(descriptor.getLiteType(), value);
((List) list).set(index, value);
}
/**
* Useful for implementing {@link Message.Builder#setField(Descriptors.FieldDescriptor,Object)}.
*/
@SuppressWarnings("unchecked")
public void setField(final FieldDescriptorType descriptor, Object value) {
if (descriptor.isRepeated()) {
if (!(value instanceof List)) {
throw new IllegalArgumentException(
"Wrong object type used with protocol message reflection.");
}
// Wrap the contents in a new list so that the caller cannot change
// the list's contents after setting it.
final List newList = new ArrayList();
newList.addAll((List) value);
for (final Object element : newList) {
verifyType(descriptor.getLiteType(), element);
}
value = newList;
} else {
verifyType(descriptor.getLiteType(), value);
}
fields.put(descriptor, value);
}
/** Construct an empty FieldSet. This is only used to initialize DEFAULT_INSTANCE. */
private FieldSet(final boolean dummy) {
this.fields = SmallSortedMap.newFieldMap(0);
makeImmutable();
}
/** Construct a new FieldSet. */
private FieldSet() {
this.fields = SmallSortedMap.newFieldMap(16);
}
/** See {@link Message.Builder#clear()}. */
public void clear() {
fields.clear();
}
/** Get a simple map containing all the fields. */
public Map<FieldDescriptorType, Object> getAllFields() {
return fields.isImmutable() ? fields : Collections.unmodifiableMap(fields);
}
/**
* Get an iterator to the field map. This iterator should not be leaked out of the protobuf
* library as it is not protected from mutation when fields is not immutable.
*/
public Iterator<Map.Entry<FieldDescriptorType, Object>> iterator() {
return fields.entrySet().iterator();
}
/**
* Useful for implementing {@link Message#getField(Descriptors.FieldDescriptor)}. This method
* returns {@code null} if the field is not set; in this case it is up to the caller to fetch the
* field's default value.
*/
public Object getField(final FieldDescriptorType descriptor) {
return fields.get(descriptor);
}
/** Useful for implementing {@link Message.Builder#clearField(Descriptors.FieldDescriptor)}. */
public void clearField(final FieldDescriptorType descriptor) {
fields.remove(descriptor);
}
