public final void copyCurrentStructure(JsonParser jp)
throws IOException, JsonProcessingException {
JsonToken t = jp.getCurrentToken();
// Let's handle field-name separately first
if (t == JsonToken.FIELD_NAME) {
writeFieldName(jp.getCurrentName());
t = jp.nextToken();
// fall-through to copy the associated value
}
switch (t) {
case START_ARRAY:
writeStartArray();
while (jp.nextToken() != JsonToken.END_ARRAY) {
copyCurrentStructure(jp);
}
writeEndArray();
break;
case START_OBJECT:
writeStartObject();
while (jp.nextToken() != JsonToken.END_OBJECT) {
copyCurrentStructure(jp);
}
writeEndObject();
break;
default: // others are simple:
copyCurrentEvent(jp);
}
}
private TwitterEntry read(JsonParser jp) throws IOException {
// First: verify that we got "Json Object":
if (jp.nextToken() != JsonToken.START_OBJECT) {
throw new IOException("Expected data to start with an Object");
}
TwitterEntry result = new TwitterEntry();
// Iterate over object fields:
while (jp.nextToken() != JsonToken.END_OBJECT) {
String fieldName = jp.getCurrentName();
// Let's move to value
jp.nextToken();
if (fieldName.equals("id")) {
result.setId(jp.getLongValue());
} else if (fieldName.equals("text")) {
result.setText(jp.getText());
} else if (fieldName.equals("fromUserId")) {
result.setFromUserId(jp.getIntValue());
} else if (fieldName.equals("toUserId")) {
result.setToUserId(jp.getIntValue());
} else if (fieldName.equals("languageCode")) {
result.setLanguageCode(jp.getText());
} else {
// ignore, or signal error
throw new IOException("Unrecognized field '" + fieldName + "'");
}
}
jp.close(); // important to close both parser and underlying File reader
return result;
}
private void reportIllegal(JsonParser parser, JsonToken expToken) throws IOException {
JsonToken curr = parser.getCurrentToken();
String msg = "Expected token " + expToken + "; got " + curr;
if (curr == JsonToken.FIELD_NAME) {
msg += " (current field name '" + parser.getCurrentName() + "')";
}
msg += ", location: " + parser.getTokenLocation();
throw new IllegalStateException(msg);
}
protected Object _unwrapAndDeserialize(
JsonParser jp, DeserializationContext ctxt, JavaType rootType, JsonDeserializer<Object> deser)
throws IOException, JsonParseException, JsonMappingException {
SerializedString rootName = _provider.findExpectedRootName(ctxt.getConfig(), rootType);
if (jp.getCurrentToken() != JsonToken.START_OBJECT) {
throw JsonMappingException.from(
jp,
"Current token not START_OBJECT (needed to unwrap root name '"
+ rootName
+ "'), but "
+ jp.getCurrentToken());
}
if (jp.nextToken() != JsonToken.FIELD_NAME) {
throw JsonMappingException.from(
jp,
"Current token not FIELD_NAME (to contain expected root name '"
+ rootName
+ "'), but "
+ jp.getCurrentToken());
}
String actualName = jp.getCurrentName();
if (!rootName.getValue().equals(actualName)) {
throw JsonMappingException.from(
jp,
"Root name '"
+ actualName
+ "' does not match expected ('"
+ rootName
+ "') for type "
+ rootType);
}
// ok, then move to value itself....
jp.nextToken();
Object result;
if (_valueToUpdate == null) {
result = deser.deserialize(jp, ctxt);
} else {
deser.deserialize(jp, ctxt, _valueToUpdate);
result = _valueToUpdate;
}
// and last, verify that we now get matching END_OBJECT
if (jp.nextToken() != JsonToken.END_OBJECT) {
throw JsonMappingException.from(
jp,
"Current token not END_OBJECT (to match wrapper object with root name '"
+ rootName
+ "'), but "
+ jp.getCurrentToken());
}
return result;
}
protected MediaContent readMediaContent(JsonParser parser) throws IOException {
MediaContent mc = new MediaContent();
if (parser.nextToken() != JsonToken.START_OBJECT) {
reportIllegal(parser, JsonToken.START_OBJECT);
}
// first fast version when field-order is as expected
if (parser.nextFieldName(FIELD_MEDIA)) {
mc.media = readMedia(parser);
if (parser.nextFieldName(FIELD_IMAGES)) {
mc.images = readImages(parser);
parser.nextToken();
verifyCurrent(parser, JsonToken.END_OBJECT);
return mc;
}
}
// and fallback if order was changed
for (; parser.getCurrentToken() == JsonToken.FIELD_NAME; parser.nextToken()) {
String field = parser.getCurrentName();
Integer I = fullFieldToIndex.get(field);
if (I != null) {
switch (I) {
case FIELD_IX_MEDIA:
mc.media = readMedia(parser);
continue;
case FIELD_IX_IMAGES:
mc.images = readImages(parser);
continue;
}
}
throw new IllegalStateException("Unexpected field '" + field + "'");
}
verifyCurrent(parser, JsonToken.END_OBJECT);
if (mc.media == null) throw new IllegalStateException("Missing field: " + FIELD_MEDIA);
if (mc.images == null) mc.images = new ArrayList<Image>();
return mc;
}
private Image readImage(JsonParser parser) throws IOException {
boolean haveWidth = false;
boolean haveHeight = false;
Image image = new Image();
if (parser.nextFieldName(FIELD_URI)) {
image.uri = parser.nextTextValue();
if (parser.nextFieldName(FIELD_TITLE)) {
image.title = parser.nextTextValue();
if (parser.nextFieldName(FIELD_WIDTH)) {
image.width = parser.nextIntValue(-1);
haveWidth = true;
if (parser.nextFieldName(FIELD_HEIGHT)) {
image.height = parser.nextIntValue(-1);
haveHeight = true;
if (parser.nextFieldName(FIELD_SIZE)) {
image.size = Image.Size.valueOf(parser.nextTextValue());
parser.nextToken();
verifyCurrent(parser, JsonToken.END_OBJECT);
return image;
}
}
}
}
}
for (; parser.getCurrentToken() == JsonToken.FIELD_NAME; parser.nextToken()) {
String field = parser.getCurrentName();
// read value token (or START_ARRAY)
parser.nextToken();
Integer I = fullFieldToIndex.get(field);
if (I != null) {
switch (I) {
case FIELD_IX_URI:
image.uri = parser.getText();
continue;
case FIELD_IX_TITLE:
image.title = parser.getText();
continue;
case FIELD_IX_WIDTH:
image.width = parser.getIntValue();
haveWidth = true;
continue;
case FIELD_IX_HEIGHT:
image.height = parser.getIntValue();
haveHeight = true;
continue;
case FIELD_IX_SIZE:
image.size = Image.Size.valueOf(parser.getText());
continue;
}
}
throw new IllegalStateException("Unexpected field '" + field + "'");
}
if (image.uri == null) throw new IllegalStateException("Missing field: " + FIELD_URI);
if (!haveWidth) throw new IllegalStateException("Missing field: " + FIELD_WIDTH);
if (!haveHeight) throw new IllegalStateException("Missing field: " + FIELD_HEIGHT);
if (image.size == null) throw new IllegalStateException("Missing field: " + FIELD_SIZE);
verifyCurrent(parser, JsonToken.END_OBJECT);
return image;
}
private Media readMedia(JsonParser parser) throws IOException {
if (parser.nextToken() != JsonToken.START_OBJECT) {
reportIllegal(parser, JsonToken.START_OBJECT);
}
Media media = new Media();
boolean haveWidth = false;
boolean haveHeight = false;
boolean haveDuration = false;
boolean haveSize = false;
// As with above, first fast path
if (parser.nextFieldName(FIELD_PLAYER)) {
media.player = Media.Player.find(parser.nextTextValue());
if (parser.nextFieldName(FIELD_URI)) {
media.uri = parser.nextTextValue();
if (parser.nextFieldName(FIELD_TITLE)) {
media.title = parser.nextTextValue();
if (parser.nextFieldName(FIELD_WIDTH)) {
haveWidth = true;
media.width = parser.nextIntValue(-1);
if (parser.nextFieldName(FIELD_HEIGHT)) {
haveHeight = true;
media.height = parser.nextIntValue(-1);
if (parser.nextFieldName(FIELD_FORMAT)) {
media.format = parser.nextTextValue();
if (parser.nextFieldName(FIELD_DURATION)) {
haveDuration = true;
media.duration = parser.nextLongValue(-1L);
if (parser.nextFieldName(FIELD_SIZE)) {
haveSize = true;
media.size = parser.nextLongValue(-1L);
if (parser.nextFieldName(FIELD_BITRATE)) {
media.bitrate = parser.nextIntValue(-1);
media.hasBitrate = true;
if (parser.nextFieldName(FIELD_COPYRIGHT)) {
media.copyright = parser.nextTextValue();
if (parser.nextFieldName(FIELD_PERSONS)) {
media.persons = readPersons(parser);
parser.nextToken();
verifyCurrent(parser, JsonToken.END_OBJECT);
return media;
}
}
}
}
}
}
}
}
}
}
}
// and if something reorder or missing, general loop:
for (; parser.getCurrentToken() == JsonToken.FIELD_NAME; parser.nextToken()) {
String field = parser.getCurrentName();
Integer I = fullFieldToIndex.get(field);
if (I != null) {
switch (I) {
case FIELD_IX_PLAYER:
media.player = Media.Player.find(parser.nextTextValue());
continue;
case FIELD_IX_URI:
media.uri = parser.nextTextValue();
continue;
case FIELD_IX_TITLE:
media.title = parser.nextTextValue();
continue;
case FIELD_IX_WIDTH:
media.width = parser.nextIntValue(-1);
haveWidth = true;
continue;
case FIELD_IX_HEIGHT:
media.height = parser.nextIntValue(-1);
haveHeight = true;
continue;
case FIELD_IX_FORMAT:
media.format = parser.nextTextValue();
continue;
case FIELD_IX_DURATION:
media.duration = parser.nextLongValue(-1L);
haveDuration = true;
continue;
case FIELD_IX_SIZE:
media.size = parser.nextLongValue(-1L);
haveSize = true;
continue;
case FIELD_IX_BITRATE:
media.bitrate = parser.nextIntValue(-1);
media.hasBitrate = true;
continue;
case FIELD_IX_PERSONS:
media.persons = readPersons(parser);
continue;
case FIELD_IX_COPYRIGHT:
media.copyright = parser.nextTextValue();
continue;
}
}
throw new IllegalStateException("Unexpected field '" + field + "'");
}
verifyCurrent(parser, JsonToken.END_OBJECT);
if (media.uri == null) throw new IllegalStateException("Missing field: " + FIELD_URI);
if (!haveWidth) throw new IllegalStateException("Missing field: " + FIELD_WIDTH);
if (!haveHeight) throw new IllegalStateException("Missing field: " + FIELD_HEIGHT);
if (media.format == null) throw new IllegalStateException("Missing field: " + FIELD_FORMAT);
if (!haveDuration) throw new IllegalStateException("Missing field: " + FIELD_DURATION);
if (!haveSize) throw new IllegalStateException("Missing field: " + FIELD_SIZE);
if (media.persons == null) media.persons = new ArrayList<String>();
if (media.player == null) throw new IllegalStateException("Missing field: " + FIELD_PLAYER);
return media;
}
public final void copyCurrentEvent(JsonParser jp) throws IOException, JsonProcessingException {
switch (jp.getCurrentToken()) {
case START_OBJECT:
writeStartObject();
break;
case END_OBJECT:
writeEndObject();
break;
case START_ARRAY:
writeStartArray();
break;
case END_ARRAY:
writeEndArray();
break;
case FIELD_NAME:
writeFieldName(jp.getCurrentName());
break;
case VALUE_STRING:
if (jp.hasTextCharacters()) {
writeString(jp.getTextCharacters(), jp.getTextOffset(), jp.getTextLength());
} else {
writeString(jp.getText());
}
break;
case VALUE_NUMBER_INT:
switch (jp.getNumberType()) {
case INT:
writeNumber(jp.getIntValue());
break;
case BIG_INTEGER:
writeNumber(jp.getBigIntegerValue());
break;
default:
writeNumber(jp.getLongValue());
}
break;
case VALUE_NUMBER_FLOAT:
switch (jp.getNumberType()) {
case BIG_DECIMAL:
writeNumber(jp.getDecimalValue());
break;
case FLOAT:
writeNumber(jp.getFloatValue());
break;
default:
writeNumber(jp.getDoubleValue());
}
break;
case VALUE_TRUE:
writeBoolean(true);
break;
case VALUE_FALSE:
writeBoolean(false);
break;
case VALUE_NULL:
writeNull();
break;
case VALUE_EMBEDDED_OBJECT:
writeObject(jp.getEmbeddedObject());
break;
default:
_cantHappen();
}
}
