/**
* Queries a view.
*
* @param <K> Object type K (key)
* @param <V> Object type V (value)
* @param classOfK The class of type K.
* @param classOfV The class of type V.
* @param classOfT The class of type T.
* @return The View result entries.
*/
public <K, V, T> ViewResult<K, V, T> queryView(
Class<K> classOfK, Class<V> classOfV, Class<T> classOfT) {
InputStream instream = null;
try {
Reader reader = new InputStreamReader(instream = queryForStream(), Charsets.UTF_8);
JsonObject json = new JsonParser().parse(reader).getAsJsonObject();
ViewResult<K, V, T> vr = new ViewResult<K, V, T>();
vr.setTotalRows(getAsLong(json, "total_rows"));
vr.setOffset(getAsInt(json, "offset"));
vr.setUpdateSeq(getAsLong(json, "update_seq"));
JsonArray jsonArray = json.getAsJsonArray("rows");
if (jsonArray.size() == 0) { // validate available rows
throw new NoDocumentException("No result was returned by this view query.");
}
for (JsonElement e : jsonArray) {
ViewResult<K, V, T>.Rows row = vr.new Rows();
row.setId(JsonToObject(gson, e, "id", String.class));
row.setKey(JsonToObject(gson, e, "key", classOfK));
row.setValue(JsonToObject(gson, e, "value", classOfV));
if (Boolean.TRUE.equals(this.includeDocs)) {
row.setDoc(JsonToObject(gson, e, "doc", classOfT));
}
vr.getRows().add(row);
}
return vr;
} finally {
close(instream);
}
}
/**
* Queries a view.
*
* @param <T> Object type T
* @param classOfT The class of type T
* @return The result of the view query as a {@code List<T> }
*/
public <T> List<T> query(Class<T> classOfT) {
InputStream instream = null;
try {
Reader reader = new InputStreamReader(instream = queryForStream(), Charsets.UTF_8);
JsonArray jsonArray = new JsonParser().parse(reader).getAsJsonObject().getAsJsonArray("rows");
List<T> list = new ArrayList<T>();
for (JsonElement jsonElem : jsonArray) {
JsonElement elem = jsonElem.getAsJsonObject();
if (Boolean.TRUE.equals(this.includeDocs)) {
elem = jsonElem.getAsJsonObject().get("doc");
}
T t = this.gson.fromJson(elem, classOfT);
list.add(t);
}
return list;
} finally {
close(instream);
}
}
