/** Recursive helper implementing {@link #findMissingFields(Message)}. */
private static void findMissingFields(
final MessageOrBuilder message, final String prefix, final List<String> results) {
for (final FieldDescriptor field : message.getDescriptorForType().getFields()) {
if (field.isRequired() && !message.hasField(field)) {
results.add(prefix + field.getName());
}
}
for (final Map.Entry<FieldDescriptor, Object> entry : message.getAllFields().entrySet()) {
final FieldDescriptor field = entry.getKey();
final Object value = entry.getValue();
if (field.getJavaType() == FieldDescriptor.JavaType.MESSAGE) {
if (field.isRepeated()) {
int i = 0;
for (final Object element : (List) value) {
findMissingFields(
(MessageOrBuilder) element, subMessagePrefix(prefix, field, i++), results);
}
} else {
if (message.hasField(field)) {
findMissingFields(
(MessageOrBuilder) value, subMessagePrefix(prefix, field, -1), results);
}
}
}
}
}
/**
* Assigns all fields in {@link JsonNode} instance to a {@link Builder}.
*
* @param builder the builder to be populated
* @param root the JSON object
* @return the original builder, populated with any fields that were discovered
*/
public static Builder toProto(final Builder builder, final JsonNode root) {
Descriptor type = builder.getDescriptorForType();
for (final FieldDescriptor fieldDesc : type.getFields()) {
final String attrName = fieldDesc.getName();
final JsonNode node = root.get(attrName);
if (node == null) {
continue;
}
if (node.isNull()) {
continue;
}
if (fieldDesc.isRepeated()) {
final Iterator<JsonNode> iter = node.getElements();
while (iter.hasNext()) {
builder.addRepeatedField(fieldDesc, toJavaObj(builder, fieldDesc, iter.next()));
}
} else {
builder.setField(fieldDesc, toJavaObj(builder, fieldDesc, node));
}
}
return builder;
}
private void printSingleField(final FieldDescriptor field,
final Object value,
final TextGenerator generator)
throws IOException {
if (field.isExtension()) {
generator.print("[");
// We special-case MessageSet elements for compatibility with proto1.
if (field.getContainingType().getOptions().getMessageSetWireFormat()
&& (field.getType() == FieldDescriptor.Type.MESSAGE)
&& (field.isOptional())
// object equality
&& (field.getExtensionScope() == field.getMessageType())) {
generator.print(field.getMessageType().getFullName());
} else {
generator.print(field.getFullName());
}
generator.print("]");
} else {
if (field.getType() == FieldDescriptor.Type.GROUP) {
// Groups must be serialized with their original capitalization.
generator.print(field.getMessageType().getName());
} else {
generator.print(field.getName());
}
}
if (field.getJavaType() == FieldDescriptor.JavaType.MESSAGE) {
if (singleLineMode) {
generator.print(" { ");
} else {
generator.print(" {\n");
generator.indent();
}
} else {
generator.print(": ");
}
printFieldValue(field, value, generator);
if (field.getJavaType() == FieldDescriptor.JavaType.MESSAGE) {
if (singleLineMode) {
generator.print("} ");
} else {
generator.outdent();
generator.print("}\n");
}
} else {
if (singleLineMode) {
generator.print(" ");
} else {
generator.print("\n");
}
}
}
private static String subMessagePrefix(
final String prefix, final FieldDescriptor field, final int index) {
final StringBuilder result = new StringBuilder(prefix);
if (field.isExtension()) {
result.append('(').append(field.getFullName()).append(')');
} else {
result.append(field.getName());
}
if (index != -1) {
result.append('[').append(index).append(']');
}
result.append('.');
return result.toString();
}
private static void getRepeatedFieldNamesInternal(Descriptor d, Map<String, Set<String>> result) {
Set<String> repeatedFields = Sets.newHashSet();
for (FieldDescriptor fd : d.getFields()) {
if (fd.isRepeated()) {
repeatedFields.add(javaCase(fd.getName()));
}
if (fd.getType() == FieldDescriptor.Type.MESSAGE) {
getRepeatedFieldNamesInternal(fd.getMessageType(), result);
}
}
if (!repeatedFields.isEmpty()) {
result.put(javaCase(d.getName()), repeatedFields);
}
}
private static RequiredFieldList evenFields(List<FieldDescriptor> protoFields) {
RequiredFieldList reqList = new RequiredFieldList();
int i = 0;
for (FieldDescriptor fd : protoFields) {
if (i % 2 == 0) {
RequiredField field = new RequiredField();
field.setAlias(fd.getName());
field.setIndex(i);
// field.setType() type is not used
reqList.add(field);
}
i++;
}
return reqList;
}
/**
* Returns the CAP element name given a proto FieldDescriptor.
*
* <p>This method takes care of differences in casing between CAP and proto.
*
* @param fd the field descriptor for which the name is returned
* @return the element name of the field
*/
public static String getElementName(FieldDescriptor fd) {
return javaCase(fd.getName());
}