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

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

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Introduction

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

Prototype

public String nextName() throws IOException

Source Link

Document

Returns the next token, a com.google.gson.stream.JsonToken#NAME property name , and consumes it.

Usage

From source file:de.pribluda.android.jsonmarshaller.JSONUnmarshaller.java

License:Apache License

/**
 * unmarshall single JSON object// w ww  . j a  v a 2  s.co m
 *
 * @param beanToBeCreatedClass
 * @param <T>
 * @return
 * @throws IllegalAccessException
 * @throws InstantiationException
 * @throws NoSuchMethodException
 * @throws InvocationTargetException
 */
public static <T> T unmarshall(JsonReader reader, java.lang.Class<T> beanToBeCreatedClass) throws IOException,
        NoSuchMethodException, InvocationTargetException, IllegalAccessException, InstantiationException {
    // nothing there - bail out
    reader.beginObject();

    if (reader.peek() == null) {
        return null;
    }
    T value = beanToBeCreatedClass.getConstructor().newInstance();
    while (reader.hasNext()) {
        String key = reader.nextName();

        //  capitalise to standard setter pattern
        StringBuilder sb = new StringBuilder();
        sb.append(SETTER_PREFIX).append(Character.toUpperCase(key.charAt(0))).append(key.substring(1));
        String methodName = sb.toString();

        Method method = getCandidateMethod(beanToBeCreatedClass, methodName);

        // must be kind of setter method
        if (method != null) {
            Class clazz = method.getParameterTypes()[0];
            // as we have setter, we can process value
            Object v = unmarshalValue(reader, clazz);

            // can we use setter method directly?
            if (clazz.isAssignableFrom(v.getClass())) {
                method.invoke(value, v);
                continue;
            }

            Object obj = convertToObject(clazz, v);
            if (obj != null)
                method.invoke(value, obj);
        } else {
            // no suitable method was found - skip this value altogether
            reader.skipValue();
        }
    }

    reader.endObject();

    return value;

}

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();//  ww w . j  av a  2s  .c om
        while (jReader.hasNext()) {
            jReader.beginObject();
            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.CustomGSON.java

License:Open Source License

/** ensure the next element has the given Name */
public static void assertElement(final JsonReader pReader, final String pName)
        throws IOException, WrongElementException {
    if (!pReader.nextName().equals(pName)) {
        pReader.close();//from  w  w  w .  j  a v  a 2  s .com
        throw new WrongElementException("Expected " + pName + "!");
    }
}

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  . ja v a2  s.  c  om
    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;/*  w w  w.j a v a2 s. c o  m*/
    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 DefaultLink readLink(JsonReader reader, Double[] weight) throws IOException {

    String id = null;/*  w  ww  .  j  av  a 2s  .c om*/
    Label label = null;
    LinkType type = null;
    String hNodeId = null;
    ObjectPropertyType objectPropertyType = null;
    String specializedLinkId = null;
    LinkStatus status = null;
    LinkKeyInfo keyInfo = null;
    Set<String> modelIds = null;
    if (weight == null)
        weight = new Double[1];

    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 = LinkType.valueOf(reader.nextString());
        } else if (key.equals("hNodeId") && reader.peek() != JsonToken.NULL) {
            hNodeId = reader.nextString();
        } else if (key.equals("objectPropertyType") && reader.peek() != JsonToken.NULL) {
            objectPropertyType = ObjectPropertyType.valueOf(reader.nextString());
        } else if (key.equals("specializedLinkId") && reader.peek() != JsonToken.NULL) {
            specializedLinkId = reader.nextString();
        } else if (key.equals("status") && reader.peek() != JsonToken.NULL) {
            status = LinkStatus.valueOf(reader.nextString());
        } else if (key.equals("keyInfo") && reader.peek() != JsonToken.NULL) {
            keyInfo = LinkKeyInfo.valueOf(reader.nextString());
        } else if (key.equals("modelIds") && reader.peek() != JsonToken.NULL) {
            modelIds = readModelIds(reader);
        } else if (key.equals("weight") && reader.peek() != JsonToken.NULL) {
            weight[0] = new Double(reader.nextDouble());
        } else {
            reader.skipValue();
        }
    }
    reader.endObject();

    DefaultLink l = null;
    if (type == LinkType.ClassInstanceLink) {
        l = new ClassInstanceLink(id, keyInfo);
    } else if (type == LinkType.ColumnSubClassLink) {
        l = new ColumnSubClassLink(id);
    } else if (type == LinkType.DataPropertyLink) {
        l = new DataPropertyLink(id, label);
    } else if (type == LinkType.DataPropertyOfColumnLink) {
        l = new DataPropertyOfColumnLink(id, hNodeId, specializedLinkId);
    } else if (type == LinkType.ObjectPropertyLink) {
        l = new ObjectPropertyLink(id, label, objectPropertyType);
    } else if (type == LinkType.ObjectPropertySpecializationLink) {
        l = new ObjectPropertySpecializationLink(hNodeId, specializedLinkId);
    } else if (type == LinkType.SubClassLink) {
        l = new SubClassLink(id);
    } else if (type == LinkType.CompactObjectPropertyLink) {
        l = new CompactObjectPropertyLink(id, objectPropertyType);
    } else if (type == LinkType.CompactSubClassLink) {
        l = new CompactSubClassLink(id);
    } else {
        logger.error("cannot instanciate a link from the type: " + type.toString());
        return null;
    }

    if (l instanceof LabeledLink) {
        ((LabeledLink) l).setStatus(status);
        ((LabeledLink) l).setModelIds(modelIds);
    }
    return l;
}

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

License:Apache License

private static Label readLabel(JsonReader reader) throws IOException {

    String uri = null;//w ww  .ja  v a2s . c  o m
    //      String ns = null;
    //      String prefix = null;
    //      String rdfsComment = null;
    String rdfsLabel = null;

    reader.beginObject();
    while (reader.hasNext()) {
        String key = reader.nextName();
        if (key.equals("uri") && reader.peek() != JsonToken.NULL) {
            uri = reader.nextString();
            //} else if (key.equals("ns") && reader.peek() != JsonToken.NULL) {
            //   ns = reader.nextString();
            //} else if (key.equals("prefix") && reader.peek() != JsonToken.NULL) {
            //   prefix = reader.nextString();
            //} else if (key.equals("rdfsLabel") && reader.peek() != JsonToken.NULL) {
            //   rdfsLabel = reader.nextString();
            //} else if (key.equals("rdfsComment") && reader.peek() != JsonToken.NULL) {
            //   rdfsComment = reader.nextString();
        } else {
            reader.skipValue();
        }
    }
    reader.endObject();

    //       Label label = new Label(uri, ns, prefix, rdfsLabel, rdfsComment);
    Label label = new Label(uri);
    return label;
}

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

License:Apache License

private static SemanticType readSemanticType(JsonReader reader) throws IOException {

    String hNodeId = null;//ww  w .j  a  v a2 s . c om
    Label domain = null;
    Label type = null;
    Origin origin = null;
    Double confidenceScore = null;

    reader.beginObject();
    while (reader.hasNext()) {
        String key = reader.nextName();
        if (key.equals("hNodeId") && reader.peek() != JsonToken.NULL) {
            hNodeId = reader.nextString();
        } else if (key.equals("domain") && reader.peek() != JsonToken.NULL) {
            domain = readLabel(reader);
        } else if (key.equals("type") && reader.peek() != JsonToken.NULL) {
            type = readLabel(reader);
        } else if (key.equals("origin") && reader.peek() != JsonToken.NULL) {
            origin = Origin.valueOf(reader.nextString());
        } else if (key.equals("confidenceScore") && reader.peek() != JsonToken.NULL) {
            confidenceScore = reader.nextDouble();
        } else {
            reader.skipValue();
        }
    }
    reader.endObject();

    SemanticType semanticType = new SemanticType(hNodeId, type, domain, origin, confidenceScore);
    return semanticType;
}

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  ava 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.isi.karma.modeling.alignment.SemanticModel.java

License:Apache License

private static ColumnNode readSourceColumn(JsonReader reader) throws IOException {
    String id = null;//from  w  ww .  j  av  a2  s .c  o  m
    String hNodeId = null;
    String columnName = 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("hNodeId") && reader.peek() != JsonToken.NULL) {
            hNodeId = reader.nextString();
        } else if (key.equals("columnName") && reader.peek() != JsonToken.NULL) {
            columnName = reader.nextString();
        } else {
            reader.skipValue();
        }
    }
    reader.endObject();

    ColumnNode cn = new ColumnNode(id, hNodeId, columnName, null, null);
    return cn;
}