下面列出了com.google.protobuf.Descriptors.EnumDescriptor#findValueByName ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
private Object getValueForField(FieldDescriptor field, Object value, Message.Builder builder) {
// TODO: handle groups, oneof
if (field.getType() == FieldDescriptor.Type.MESSAGE) {
Descriptor fieldTypeDescriptor =
descriptorMapping.get(getReferenceName(field.getMessageType()));
return createProtoBuf(
fieldTypeDescriptor, builder.newBuilderForField(field), (Map<String, Object>) value);
}
if (field.getType() == FieldDescriptor.Type.ENUM) {
EnumDescriptor enumDescriptor =
enumMapping.get(ProtoToGql.getReferenceName(field.getEnumType()));
return enumDescriptor.findValueByName(value.toString());
}
if (field.getType() == FieldDescriptor.Type.FLOAT) {
if (value instanceof Double) {
return ((Double) value).floatValue();
}
}
return value;
}
/**
* Parse Enum value {@link EnumValueDescriptor} associated with given {@link EnumDescriptor} from
* given text if found. Otherwise, throw a {@link ParseException}.
*
* <p>The text could be either enum value name or enum value number.
*/
static EnumValueDescriptor parseEnum(EnumDescriptor enumType, String text) {
EnumValueDescriptor value = null;
if (lookingAtNumber(text)) {
int number = parseUInt32(text);
value = enumType.findValueByNumber(number);
if (value == null) {
throw new ParseException(String.format(
"Enum type '%s' has no value with number %d", enumType.getFullName(), number));
}
} else {
value = enumType.findValueByName(text);
if (value == null) {
throw new ParseException(String.format(
"Enum type '%s' has no value with name '%s'", enumType.getFullName(), text));
}
}
return value;
}
private static Object handlePrimitive(Tokenizer tokenizer, FieldDescriptor field,
boolean selfType)
throws ParseException {
Object value = null;
if ("null".equals(tokenizer.currentToken())) {
tokenizer.consume("null");
return value;
}
switch (field.getType()) {
case INT32:
case SINT32:
case SFIXED32:
value = tokenizer.consumeInt32();
break;
case INT64:
case SINT64:
case SFIXED64:
value = tokenizer.consumeInt64();
break;
case UINT32:
case FIXED32:
value = tokenizer.consumeUInt32();
break;
case UINT64:
case FIXED64:
value = tokenizer.consumeUInt64();
break;
case FLOAT:
value = tokenizer.consumeFloat();
break;
case DOUBLE:
value = tokenizer.consumeDouble();
break;
case BOOL:
value = tokenizer.consumeBoolean();
break;
case STRING:
value = tokenizer.consumeString();
break;
case BYTES:
value = tokenizer.consumeByteString(field.getFullName(), selfType);
break;
case ENUM: {
EnumDescriptor enumType = field.getEnumType();
if (tokenizer.lookingAtInteger()) {
int number = tokenizer.consumeInt32();
value = enumType.findValueByNumber(number);
if (value == null) {
throw tokenizer.parseExceptionPreviousToken("Enum type \""
+ enumType.getFullName()
+ "\" has no value with number "
+ number + ".");
}
} else {
String id = tokenizer.consumeIdentifier();
if (StringUtils.isAllLowerCase(id)) {
char b = id.charAt(0);
b = (char) (b + 'A' - 'a');
String s = id.substring(1);
id = b + s;
}
value = enumType.findValueByName(id);
if (value == null) {
throw tokenizer.parseExceptionPreviousToken("Enum type \""
+ enumType.getFullName()
+ "\" has no value named \""
+ id + "\".");
}
}
break;
}
case MESSAGE:
case GROUP:
throw new RuntimeException("Can't get here.");
default:
}
return value;
}
static Object objToMessageObjInner(Builder b, Object value, FieldDescriptor field, boolean isRepeated) {
switch (field.getType()) {
case INT32:
case SINT32:
case SFIXED32:
return TypeSafe.anyToInt(value);
case INT64:
case SINT64:
case SFIXED64:
if( value instanceof Date)
return ((Date)value).getTime();
return TypeSafe.anyToLong(value);
case BOOL:
return TypeSafe.anyToBool(value);
case FLOAT:
return TypeSafe.anyToFloat(value);
case DOUBLE:
return TypeSafe.anyToDouble(value);
case UINT32:
case FIXED32:
return (int) (TypeSafe.anyToLong(value) & 0x00000000FFFFFFFFL);
case UINT64:
case FIXED64:
BigInteger bi = new BigInteger(value.toString());
return bi.longValue();
case STRING:
if( value instanceof Date)
return formatDate((Date)value);
return TypeSafe.anyToString(value);
case BYTES: {
if (value instanceof ByteString) {
return value;
}
if (value instanceof String) {
byte[] bb = getBytes((String) value);
if (bb == null) return null;
return ByteString.copyFrom(bb);
}
if (value instanceof byte[]) {
return ByteString.copyFrom((byte[]) value);
}
return null;
}
case ENUM: {
EnumDescriptor ed = field.getEnumType();
EnumValueDescriptor evd = ed.findValueByName(value.toString());
if (evd == null) {
evd = ed.findValueByNumber(TypeSafe.anyToInt(value));
}
if (evd == null) return null;
return evd;
}
case MESSAGE:
Map<String, Object> map = TypeSafe.anyToMap(value);
if (map == null) {
if( value instanceof MapConvertable) {
map = ((MapConvertable)value).toMap();
}
if( map == null ) {
return null;
}
}
Builder b2 = isRepeated ?
getRepeatedFieldBuilder(b, field.getName()) :
getFieldBuilder(b, field);
for (FieldDescriptor subfield : b2.getDescriptorForType().getFields()) {
String subName = subfield.getName();
Object subValue = getValue(map, null, subName);
if (subValue == null) continue;
if (subfield.isRepeated()) {
objToMessageObjRepeated(b2, subValue, subfield);
} else {
objToMessageObj(b2, subValue, subfield);
}
}
return isRepeated ? null : b2.build();
default:
return null;
}
}
private Object handlePrimitive(XMLEventReader parser, FieldDescriptor field, String value) {
Object result = null;
if (value == null) // precondition check
return result;
switch (field.getType()) {
case INT32:
case SINT32:
case SFIXED32:
result = parseInt32(value);
break;
case INT64:
case SINT64:
case SFIXED64:
result = parseInt64(value);
break;
case UINT32:
case FIXED32:
result = parseUInt32(value);
break;
case UINT64:
case FIXED64:
result = parseUInt64(value);
break;
case FLOAT:
result = parseFloat(value);
break;
case DOUBLE:
result = parseDouble(value);
break;
case BOOL:
result = parseBoolean(value);
break;
case STRING:
result = value;
break;
case BYTES:
result = unescapeBytes(value);
break;
case ENUM: {
EnumDescriptor enumType = field.getEnumType();
if (isDigits(value)) {
int number = parseInt32(value);
result = enumType.findValueByNumber(number);
if (result == null) {
throw new RuntimeException("Enum type \""
+ enumType.getFullName()
+ "\" has no value with number "
+ number + ".");
}
} else {
String id = value;
result = enumType.findValueByName(id);
if (result == null) {
throw new RuntimeException("Enum type \""
+ enumType.getFullName()
+ "\" has no value named \"" + id + "\".");
}
}
break;
}
case MESSAGE:
case GROUP:
throw new RuntimeException("Can't get here.");
}
return result;
}
private Object handlePrimitive(JsonParser parser, FieldDescriptor field) throws IOException {
Object value = null;
JsonToken token = parser.getCurrentToken();
if (token.equals(JsonToken.VALUE_NULL)) {
return value;
}
switch (field.getType()) {
case INT32:
case SINT32:
case SFIXED32:
value = parser.getIntValue();
break;
case INT64:
case SINT64:
case SFIXED64:
value = parser.getLongValue();
break;
case UINT32:
case FIXED32:
long valueLong = parser.getLongValue();
if (valueLong < 0 || valueLong > MAX_UINT_VALUE) {
throw new NumberFormatException("Number must be positive: " + valueLong);
}
value = (int) valueLong;
break;
case UINT64:
case FIXED64:
BigInteger valueBigInt = parser.getBigIntegerValue();
// valueBigInt < 0 || valueBigInt > MAX_ULONG_VALUE
if (valueBigInt.compareTo(BigInteger.ZERO) == -1 || valueBigInt.compareTo(MAX_ULONG_VALUE) == 1) {
throw new NumberFormatException("Number must be positive: " + valueBigInt);
}
value = valueBigInt.longValue();
break;
case FLOAT:
value = parser.getFloatValue();
break;
case DOUBLE:
value = parser.getDoubleValue();
break;
case BOOL:
value = parser.getBooleanValue();
break;
case STRING:
value = parser.getText();
break;
case BYTES:
value = ByteString.copyFrom(parser.getBinaryValue());
break;
case ENUM: {
EnumDescriptor enumType = field.getEnumType();
if (token.equals(JsonToken.VALUE_NUMBER_INT)) {
int number = parser.getIntValue();
value = enumType.findValueByNumber(number);
if (value == null) {
throw new RuntimeException("Enum type \""
+ enumType.getFullName()
+ "\" has no value with number "
+ number + ".");
}
} else {
String id = parser.getText();
value = enumType.findValueByName(id);
if (value == null) {
throw new RuntimeException("Enum type \""
+ enumType.getFullName()
+ "\" has no value named \""
+ id + "\".");
}
}
break;
}
case MESSAGE:
case GROUP:
throw new RuntimeException("Can't get here.");
}
return value;
}
private Object handlePrimitive(Tokenizer tokenizer, FieldDescriptor field) throws ParseException {
Object value = null;
if ("null".equals(tokenizer.currentToken())) {
tokenizer.consume("null");
return value;
}
switch (field.getType()) {
case INT32:
case SINT32:
case SFIXED32:
value = tokenizer.consumeInt32();
break;
case INT64:
case SINT64:
case SFIXED64:
value = tokenizer.consumeInt64();
break;
case UINT32:
case FIXED32:
value = tokenizer.consumeUInt32();
break;
case UINT64:
case FIXED64:
value = tokenizer.consumeUInt64();
break;
case FLOAT:
value = tokenizer.consumeFloat();
break;
case DOUBLE:
value = tokenizer.consumeDouble();
break;
case BOOL:
value = tokenizer.consumeBoolean();
break;
case STRING:
value = tokenizer.consumeString();
break;
case BYTES:
value = tokenizer.consumeByteString();
break;
case ENUM: {
EnumDescriptor enumType = field.getEnumType();
if (tokenizer.lookingAtInteger()) {
int number = tokenizer.consumeInt32();
value = enumType.findValueByNumber(number);
if (value == null) {
throw tokenizer.parseExceptionPreviousToken("Enum type \""
+ enumType.getFullName()
+ "\" has no value with number "
+ number + ".");
}
} else {
String id = tokenizer.consumeIdentifier();
value = enumType.findValueByName(id);
if (value == null) {
throw tokenizer.parseExceptionPreviousToken("Enum type \""
+ enumType.getFullName()
+ "\" has no value named \""
+ id + "\".");
}
}
break;
}
case MESSAGE:
case GROUP:
throw new RuntimeException("Can't get here.");
}
return value;
}
private Object handlePrimitive(Tokenizer tokenizer, FieldDescriptor field) throws ParseException {
Object value = null;
if ("null".equals(tokenizer.currentToken())) {
tokenizer.consume("null");
return value;
}
switch (field.getType()) {
case INT32:
case SINT32:
case SFIXED32:
value = tokenizer.consumeInt32();
break;
case INT64:
case SINT64:
case SFIXED64:
value = tokenizer.consumeInt64();
break;
case UINT32:
case FIXED32:
value = tokenizer.consumeUInt32();
break;
case UINT64:
case FIXED64:
value = tokenizer.consumeUInt64();
break;
case FLOAT:
value = tokenizer.consumeFloat();
break;
case DOUBLE:
value = tokenizer.consumeDouble();
break;
case BOOL:
value = tokenizer.consumeBoolean();
break;
case STRING:
value = tokenizer.consumeString();
break;
case BYTES:
value = tokenizer.consumeByteString();
break;
case ENUM: {
EnumDescriptor enumType = field.getEnumType();
if (tokenizer.lookingAtInteger()) {
int number = tokenizer.consumeInt32();
value = enumType.findValueByNumber(number);
if (value == null) {
throw tokenizer.parseExceptionPreviousToken("Enum type \""
+ enumType.getFullName()
+ "\" has no value with number "
+ number + ".");
}
} else {
String id = tokenizer.consumeIdentifier();
value = enumType.findValueByName(id);
if (value == null) {
throw tokenizer.parseExceptionPreviousToken("Enum type \""
+ enumType.getFullName()
+ "\" has no value named \""
+ id + "\".");
}
}
break;
}
case MESSAGE:
case GROUP:
throw new RuntimeException("Can't get here.");
}
return value;
}
private Object handlePrimitive(Tokenizer tokenizer, FieldDescriptor field) throws ParseException {
Object value = null;
if ("null".equals(tokenizer.currentToken())) {
tokenizer.consume("null");
return value;
}
switch (field.getType()) {
case INT32:
case SINT32:
case SFIXED32:
value = tokenizer.consumeInt32();
break;
case INT64:
case SINT64:
case SFIXED64:
value = tokenizer.consumeInt64();
break;
case UINT32:
case FIXED32:
value = tokenizer.consumeUInt32();
break;
case UINT64:
case FIXED64:
value = tokenizer.consumeUInt64();
break;
case FLOAT:
value = tokenizer.consumeFloat();
break;
case DOUBLE:
value = tokenizer.consumeDouble();
break;
case BOOL:
value = tokenizer.consumeBoolean();
break;
case STRING:
value = tokenizer.consumeString();
break;
case BYTES:
value = tokenizer.consumeByteString();
break;
case ENUM: {
EnumDescriptor enumType = field.getEnumType();
if (tokenizer.lookingAtInteger()) {
int number = tokenizer.consumeInt32();
value = enumType.findValueByNumber(number);
if (value == null) {
throw tokenizer.parseExceptionPreviousToken("Enum type \""
+ enumType.getFullName()
+ "\" has no value with number "
+ number + ".");
}
} else {
String id = tokenizer.consumeIdentifier();
value = enumType.findValueByName(id);
if (value == null) {
throw tokenizer.parseExceptionPreviousToken("Enum type \""
+ enumType.getFullName()
+ "\" has no value named \""
+ id + "\".");
}
}
break;
}
case MESSAGE:
case GROUP:
throw new RuntimeException("Can't get here.");
}
return value;
}
/**
* Gets the enum value for the given enum type and name
*
* @param enumTypeName the enum type name
* @param enumName the enum name
* @return the enum value descriptor (null if not found)
*/
public EnumValueDescriptor getEnumValue(String enumTypeName, String enumName) {
EnumDescriptor enumType = getEnumDescriptor(enumTypeName);
if (enumType == null) return null;
return enumType.findValueByName(enumName);
}