@Override
public final MediaContent deserialize(byte[] array) throws IOException {
JsonParser parser = constructParser(array);
MediaContent mc = readMediaContent(parser);
parser.close();
return mc;
}
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);
}
@Override
public MediaContent[] deserializeItems(InputStream in, int numberOfItems) throws IOException {
MediaContent[] result = new MediaContent[numberOfItems];
JsonParser parser = constructParser(in);
for (int i = 0; i < numberOfItems; ++i) {
result[i] = readMediaContent(parser);
}
parser.close();
return result;
}
private List<Image> readImages(JsonParser parser) throws IOException {
if (parser.nextToken() != JsonToken.START_ARRAY) {
reportIllegal(parser, JsonToken.START_ARRAY);
}
List<Image> images = new ArrayList<Image>();
while (parser.nextToken() == JsonToken.START_OBJECT) {
images.add(readImage(parser));
}
verifyCurrent(parser, JsonToken.END_ARRAY);
return images;
}
private List<String> readPersons(JsonParser parser) throws IOException {
if (parser.nextToken() != JsonToken.START_ARRAY) {
reportIllegal(parser, JsonToken.START_ARRAY);
}
List<String> persons = new ArrayList<String>();
String str;
while ((str = parser.nextTextValue()) != null) {
persons.add(str);
}
verifyCurrent(parser, JsonToken.END_ARRAY);
return persons;
}
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 final void verifyCurrent(JsonParser parser, JsonToken expToken) throws IOException {
if (parser.getCurrentToken() != expToken) {
reportIllegal(parser, expToken);
}
}
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;
}