Example usage for com.google.gson.stream JsonReader beginArray

List of usage examples for com.google.gson.stream JsonReader beginArray

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Introduction

In this page you can find the example usage for com.google.gson.stream JsonReader beginArray.

Prototype

public void beginArray() throws IOException

Source Link

Document

Consumes the next token from the JSON stream and asserts that it is the beginning of a new array.

Usage

From source file:de.sabian.objectstore.ObjectStoreRaw.java

License:Apache License

public <T, X> boolean fillMap(String identifier, Class<T> classOfKeys, Class<X> classOfValues, Map<T, X> map)
        throws IOException {
    if (contains(identifier)) {
        JsonReader jReader = new JsonReader(new StringReader(mJsonStorage.getJson(identifier)));
        jReader.beginArray();
        while (jReader.hasNext()) {
            jReader.beginObject();/*from  w w  w  . j a  v  a 2s.co  m*/
            String name = jReader.nextName();
            if (!name.equals("key"))
                throw new IOException("expected name key but found: " + name);
            T key = mGson.fromJson(jReader, classOfKeys);
            name = jReader.nextName();
            if (!name.equals("value"))
                throw new IOException("expected name value but found: " + name);
            X value = mGson.fromJson(jReader, classOfValues);
            jReader.endObject();
            map.put(key, value);
        }
        jReader.endArray();
        jReader.close();
        return true;
    } else
        return false;
}

From source file:de.winniehell.battlebeavers.storage.GameStorage.java

License:Open Source License

/**
 * loads the storage from file//from w ww.j  a v  a2 s.c om
 * @throws FileNotFoundException
 */
private void loadFromFile() throws FileNotFoundException {

    if (!(new File(getFileName())).exists()) {
        final GameInfo info = GameInfo.fromFile(context, game);

        Log.d(TAG, "Copying maps/" + info.getMapName() + "/setup.json");

        try {
            final InputStream src = context.getAssets().open("maps/" + info.getMapName() + "/setup.json");

            final FileOutputStream dest = new FileOutputStream(getFileName());

            StreamUtils.copyAndClose(src, dest);
        } catch (final IOException e) {
            Log.e(TAG, "Copying map failed!", e);
            return;
        }
    }

    try {
        Log.d(TAG, "loading: " + StreamUtils.readFully(new FileInputStream(getFileName())));
    } catch (final Exception e) {
        Log.e(TAG, e.getMessage());
        return;
    }

    final Gson gson = CustomGSON.getInstance();
    final JsonReader reader = CustomGSON.getReader(context, getFileName());

    // file does not exist
    if (reader == null) {
        throw new FileNotFoundException(getFileName());
    }

    try {
        reader.beginArray();
        while (reader.hasNext()) {
            final Soldier soldier = gson.fromJson(reader, Soldier.class);

            try {
                addSoldier(soldier);
            } catch (final UnexpectedTileContentException e) {
                Log.e(TAG, "Adding soldier failed!", e);
            }
        }
        reader.endArray();
    } catch (final Exception e) {
        Log.e(TAG, "Loading game storage failed!", e);
    } finally {
        try {
            reader.close();
        } catch (final IOException e) {
            Log.e(TAG, "Closing reader failed!", e);
        }
    }
}

From source file:edu.isi.karma.modeling.alignment.GraphUtil.java

License:Apache License

public static DirectedWeightedMultigraph<Node, DefaultLink> readGraph(JsonReader reader) throws IOException {

    DirectedWeightedMultigraph<Node, DefaultLink> graph = new DirectedWeightedMultigraph<Node, DefaultLink>(
            LabeledLink.class);

    Node n, source, target;//from   w w  w  . j a  va2  s  . co  m
    DefaultLink l;
    Double[] weight = new Double[1];
    HashMap<String, Node> idToNodes = new HashMap<>();

    reader.beginObject();
    while (reader.hasNext()) {
        String key = reader.nextName();
        if (key.equals("nodes") && reader.peek() != JsonToken.NULL) {
            reader.beginArray();
            while (reader.hasNext()) {
                n = readNode(reader);
                if (n != null) {
                    idToNodes.put(n.getId(), n);
                    graph.addVertex(n);
                }
            }
            reader.endArray();
        } else if (key.equals("links") && reader.peek() != JsonToken.NULL) {
            reader.beginArray();
            while (reader.hasNext()) {
                l = readLink(reader, weight);
                if (l != null) {
                    source = idToNodes.get(LinkIdFactory.getLinkSourceId(l.getId()));
                    target = idToNodes.get(LinkIdFactory.getLinkTargetId(l.getId()));
                    if (source != null && target != null) {
                        graph.addEdge(source, target, l);
                        if (weight[0] != null)
                            graph.setEdgeWeight(l, weight[0].doubleValue());
                    }
                }
            }
            reader.endArray();
        } else {
            reader.skipValue();
        }
    }
    reader.endObject();

    return graph;
}

From source file:edu.isi.karma.modeling.alignment.GraphUtil.java

License:Apache License

private static Node readNode(JsonReader reader) throws IOException {

    String id = null;/*from   w  w  w .  ja  va  2 s . c om*/
    Label label = null;
    NodeType type = null;
    String hNodeId = null;
    String columnName = null;
    Label rdfLiteralType = null;
    String language = null;
    Label datatype = null;
    String value = null;
    boolean isUri = false;
    SemanticType userSelectedSemanticType = null;
    List<SemanticType> learnedSemanticTypes = null;
    List<SemanticType> userSemanticTypes = null;
    Set<String> modelIds = null;

    reader.beginObject();
    while (reader.hasNext()) {
        String key = reader.nextName();
        if (key.equals("id") && reader.peek() != JsonToken.NULL) {
            id = reader.nextString();
        } else if (key.equals("label") && reader.peek() != JsonToken.NULL) {
            label = readLabel(reader);
        } else if (key.equals("type") && reader.peek() != JsonToken.NULL) {
            type = NodeType.valueOf(reader.nextString());
        } else if (key.equals("hNodeId") && reader.peek() != JsonToken.NULL) {
            hNodeId = reader.nextString();
        } else if (key.equals("columnName") && reader.peek() != JsonToken.NULL) {
            columnName = reader.nextString();
        } else if (key.equals("datatype") && reader.peek() != JsonToken.NULL) {
            datatype = readLabel(reader);
        } else if (key.equals("value") && reader.peek() != JsonToken.NULL) {
            value = reader.nextString();
        } else if (key.equals("isUri") && reader.peek() != JsonToken.NULL) {
            isUri = Boolean.parseBoolean(reader.nextString());
        } else if (key.equals("rdfLiteralType") && reader.peek() != JsonToken.NULL) {
            rdfLiteralType = readLabel(reader);
        } else if (key.equals("language") && reader.peek() != JsonToken.NULL) {
            language = reader.nextString();
        } else if (key.equals("userSelectedSemanticType") && reader.peek() != JsonToken.NULL) {
            userSelectedSemanticType = readSemanticType(reader);
        } else if (key.equals("suggestedSemanticTypes") && reader.peek() != JsonToken.NULL) {
            learnedSemanticTypes = new ArrayList<>();
            reader.beginArray();
            while (reader.hasNext()) {
                SemanticType semanticType = readSemanticType(reader);
                learnedSemanticTypes.add(semanticType);
            }
            reader.endArray();
        } else if (key.equals("userSemanticTypes") && reader.peek() != JsonToken.NULL) {
            userSemanticTypes = new ArrayList<>();
            reader.beginArray();
            while (reader.hasNext()) {
                SemanticType semanticType = readSemanticType(reader);
                userSemanticTypes.add(semanticType);
            }
            reader.endArray();
        } else if (key.equals("learnedSemanticTypes") && reader.peek() != JsonToken.NULL) {
            learnedSemanticTypes = new ArrayList<>();
            reader.beginArray();
            while (reader.hasNext()) {
                SemanticType semanticType = readSemanticType(reader);
                learnedSemanticTypes.add(semanticType);
            }
            reader.endArray();
        } else if (key.equals("modelIds") && reader.peek() != JsonToken.NULL) {
            modelIds = readModelIds(reader);
        } else {
            reader.skipValue();
        }
    }
    reader.endObject();

    Node n = null;
    if (type == NodeType.InternalNode) {
        n = new InternalNode(id, label);
    } else if (type == NodeType.ColumnNode) {
        n = new ColumnNode(id, hNodeId, columnName, rdfLiteralType, language);
        if (userSemanticTypes == null && userSelectedSemanticType != null) {
            userSemanticTypes = new ArrayList<>();
            userSemanticTypes.add(userSelectedSemanticType);
        }
        if (userSemanticTypes != null) {
            for (SemanticType st : userSemanticTypes)
                ((ColumnNode) n).assignUserType(st);
        }
        ((ColumnNode) n).setLearnedSemanticTypes(learnedSemanticTypes);
    } else if (type == NodeType.LiteralNode) {
        n = new LiteralNode(id, value, datatype, language, isUri);
    } else {
        logger.error("cannot instanciate a node from the type: " + type.toString());
        return null;
    }

    n.setModelIds(modelIds);

    return n;
}

From source file:edu.isi.karma.modeling.alignment.GraphUtil.java

License:Apache License

private static Set<String> readModelIds(JsonReader reader) throws IOException {

    Set<String> modelIds = new HashSet<>();

    reader.beginArray();
    while (reader.hasNext()) {
        modelIds.add(reader.nextString());
    }/*ww  w. j  a  v  a 2 s. co m*/
    reader.endArray();

    return modelIds;
}

From source file:edu.isi.karma.modeling.alignment.SemanticModel.java

License:Apache License

private static SemanticModel readModel(JsonReader reader) throws IOException {

    String id = null;//from  w  w  w.j  av a  2  s.  c o  m
    String name = null;
    String description = null;
    DirectedWeightedMultigraph<Node, DefaultLink> graph = null;
    List<ColumnNode> sourceColumns = null;
    HashMap<String, ColumnNode> sourceColumnIds = null;

    Map<String, String> mappingToSourceColumnsIds = null;

    reader.beginObject();
    while (reader.hasNext()) {
        String key = reader.nextName();
        if (key.equals("id") && reader.peek() != JsonToken.NULL) {
            id = reader.nextString();
        } else if (key.equals("name") && reader.peek() != JsonToken.NULL) {
            name = reader.nextString();
        } else if (key.equals("description") && reader.peek() != JsonToken.NULL) {
            description = reader.nextString();
        } else if (key.equals("sourceColumns") && reader.peek() != JsonToken.NULL) {
            sourceColumns = new LinkedList<>();
            sourceColumnIds = new HashMap<>();
            reader.beginArray();
            while (reader.hasNext()) {
                ColumnNode cn = readSourceColumn(reader);
                if (cn != null) {
                    sourceColumns.add(cn);
                    sourceColumnIds.put(cn.getId(), cn);
                }
            }
            reader.endArray();
        } else if (key.equals("mappingToSourceColumns") && reader.peek() != JsonToken.NULL) {
            mappingToSourceColumnsIds = new HashMap<>();
            Map<String, String> oneEntryMapping;
            reader.beginArray();
            while (reader.hasNext()) {
                oneEntryMapping = readMappingToSourceColumn(reader);
                if (oneEntryMapping != null && oneEntryMapping.size() == 1)
                    mappingToSourceColumnsIds.putAll(oneEntryMapping);
            }
            reader.endArray();
        } else if (key.equals("graph") && reader.peek() != JsonToken.NULL) {
            graph = GraphUtil.readGraph(reader);
        } else {
            reader.skipValue();
        }
    }
    reader.endObject();

    Map<ColumnNode, ColumnNode> mappingToSourceColumns = new HashMap<>();
    if (graph != null && mappingToSourceColumnsIds != null && !mappingToSourceColumnsIds.isEmpty()) {
        for (Node n : graph.vertexSet()) {
            if (n instanceof ColumnNode) {
                ColumnNode cn = (ColumnNode) n;
                String sourceColumnId = mappingToSourceColumnsIds.get(cn.getId());
                if (sourceColumnId != null) {
                    ColumnNode sourceColumn = sourceColumnIds.get(sourceColumnId);
                    if (sourceColumn != null)
                        mappingToSourceColumns.put(cn, sourceColumn);
                }
            }
        }
    }

    SemanticModel semanticModel = new SemanticModel(id, GraphUtil.asLabeledGraph(graph), sourceColumns,
            mappingToSourceColumns);
    semanticModel.setName(name);
    semanticModel.setDescription(description);

    return semanticModel;
}

From source file:edu.rpi.shuttles.data.RPIShuttleDataProvider.java

License:Apache License

public SparseArray<Stop> fetchStops() throws IOException {
    // Download stop data.
    URL stopsURL = new URL(mStopsUrl);
    URLConnection stopsConnection = stopsURL.openConnection();
    stopsConnection.setRequestProperty("User-Agent", mUserAgent);
    InputStream in = new BufferedInputStream(stopsConnection.getInputStream());
    JsonReader reader = new JsonReader(new InputStreamReader(in));
    mStops.clear();/*from   w  w  w . j a va2 s .  c  o m*/
    mRouteStopsMap.clear();

    reader.beginArray();
    while (reader.hasNext()) {
        Stop stop = readStop(reader);
        mStops.put(stop.id, stop);
    }
    reader.endArray();

    reader.close();
    return mStops;
}

From source file:edu.rpi.shuttles.data.RPIShuttleDataProvider.java

License:Apache License

private Stop readStop(JsonReader reader) throws IOException {
    Stop stop = new Stop();
    ArrayList<Integer> routes = new ArrayList<Integer>();
    reader.beginObject();/* w w w . jav  a 2 s.c om*/
    reader.nextName();
    reader.beginObject();
    while (reader.hasNext()) {
        String key = reader.nextName();
        if (key.equals("id")) {
            stop.id = reader.nextInt();
        } else if (key.equals("name")) {
            stop.name = reader.nextString();
        } else if (key.equals("short_name")) {
            stop.short_name = reader.nextString();
        } else if (key.equals("enabled")) {
            stop.enabled = reader.nextBoolean();
        } else if (key.equals("latitude")) {
            stop.latitude = reader.nextDouble();
        } else if (key.equals("longitude")) {
            stop.longitude = reader.nextDouble();
        } else if (key.equals("routes")) {
            reader.beginArray();
            while (reader.hasNext()) {
                reader.beginObject();
                while (reader.hasNext()) {
                    if (reader.nextName().equals("id")) {
                        routes.add(reader.nextInt());
                    } else {
                        reader.skipValue();
                    }
                }
                reader.endObject();
            }
            reader.endArray();
        } else {
            stop.extraAttributes.put(key, reader.nextString());
        }

    }
    reader.endObject();
    reader.endObject();
    Log.d("RPIDataProvider", String.format("Pulling stop %S (%S)...", Integer.toString(stop.id), stop.name));
    for (int i = 0; i < routes.size(); i++) {
        ArrayList<Integer> route = mRouteStopsMap.get(routes.get(i), new ArrayList<Integer>());
        route.add(stop.id);
        mRouteStopsMap.put(routes.get(i), route);
    }
    return stop;
}

From source file:edu.rpi.shuttles.data.RPIShuttleDataProvider.java

License:Apache License

public SparseArray<Route> fetchRoutes() throws IOException {
    URL routesURL = new URL(mRoutesUrl);
    URLConnection routesConnection = routesURL.openConnection();
    routesConnection.setRequestProperty("User-Agent", mUserAgent);
    InputStream in = new BufferedInputStream(routesConnection.getInputStream());

    URL routePathsURL = new URL(mRoutePathsUrl);
    URLConnection routePathsConnection = routePathsURL.openConnection();
    routePathsConnection.setRequestProperty("User-Agent", mUserAgent);
    InputStream pathInputStream = new BufferedInputStream(routePathsConnection.getInputStream());

    mRoutes.clear();/*from   w  w w .  java 2 s. com*/
    JsonReader routesReader = new JsonReader(new InputStreamReader(in));
    routesReader.beginArray();
    while (routesReader.hasNext()) {
        Route route = readRoute(routesReader);
        mRoutes.put(route.id, route);
    }
    routesReader.endArray();

    JsonReader routePathReader = new JsonReader(new InputStreamReader(pathInputStream));
    routePathReader.beginObject();
    while (routePathReader.hasNext()) {
        Log.d("RouteDataProvider", "Entering L1.");
        String key = routePathReader.nextName();
        Log.d("RouteDataProvider", String.format("L1: %s", key));
        if (key.equals("routes")) {
            Log.d("RouteDataProvider", "Found 'routes' tag.");
            routePathReader.beginArray();
            while (routePathReader.hasNext()) {
                populateRoutePath(routePathReader);
            }
            routePathReader.endArray();
        } else {
            Log.d("RouteDataProvider", "Found other tag.");
            routePathReader.skipValue();
        }
    }
    routePathReader.endObject();

    return mRoutes;
}

From source file:edu.rpi.shuttles.data.RPIShuttleDataProvider.java

License:Apache License

private void populateRoutePath(JsonReader reader) throws IOException {
    ArrayList<Coordinate> path = new ArrayList<Coordinate>();
    Integer path_id = 0;//from www  .j  a  v a 2 s.c o  m
    reader.beginObject();
    while (reader.hasNext()) {
        // Process attributes of a route.
        // We have the array of coordinates making up the path of the route on a map.
        String key = reader.nextName();
        if (key.equals("coords")) {
            Double latitude = 0.0;
            Double longitude = 0.0;
            reader.beginArray();
            // Read coordinate attributes and add to path.
            while (reader.hasNext()) {
                reader.beginObject();
                // Read coordinate attributes.
                while (reader.hasNext()) {
                    String coordinate_key = reader.nextName();
                    if (coordinate_key.equals("latitude")) {
                        latitude = reader.nextDouble();
                    } else if (coordinate_key.equals("longitude")) {
                        longitude = reader.nextDouble();
                    } else {
                        reader.skipValue();
                    }
                }
                reader.endObject();
                // Add coordinate to path.
                path.add(new Coordinate(latitude, longitude));
                Log.d("CreatePoint",
                        String.format("Inserting point %S, %S", latitude.toString(), longitude.toString()));
            }
            reader.endArray();
        } else if (key.equals("id")) {
            path_id = reader.nextInt();
        } else {
            reader.skipValue();
        }
    }
    reader.endObject();
    Route route = mRoutes.get(path_id);
    route.map_polyline = path;
    mRoutes.put(path_id, route);
    Log.d("RouteDataProvider", String.format("Pulling route %S (%S) with %s coordinates...",
            Integer.toString(route.id), route.name, Integer.valueOf(route.map_polyline.size()).toString()));
}