Example usage for com.google.gson JsonNull JsonNull

Introduction

In this page you can find the example usage for com.google.gson JsonNull JsonNull.

Prototype

@Deprecated
public JsonNull()

Source Link

Document

Creates a new JsonNull object.

Usage

From source file:com.crypticbit.diff.demo.swing.contacts.JsonEditPanel.java

License:Apache License

/**
 * Default constructor for the JSONEditPanel object. Creates an empty tree.
 *///www.  j av a  2  s .c  o m
public JsonEditPanel() {
    setLayout(new BorderLayout());
    JsonJTreeNode root = new JsonJTreeNode(null, -1, new JsonNull());
    jTree = new JTree(root);
    jTree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
    add(new JScrollPane(jTree), BorderLayout.CENTER);
}

From source file:com.crypticbit.diff.demo.swing.contacts.JsonEditPanel.java

License:Apache License

/**
 * Deletes selected node or sets entire model to null if root node or no node is selected.
 *//*from www. j a va2  s.c o m*/
public void deleteNode() {
    TreePath selection = jTree.getSelectionPath();
    if (selection == null) {
        // Replace root with emptyness
        jTree.setModel(new DefaultTreeModel(new JsonJTreeNode(null, -1, new JsonNull())));
    } else {
        JsonJTreeNode node = (JsonJTreeNode) selection.getLastPathComponent();
        JsonJTreeNode parent = (JsonJTreeNode) node.getParent();
        if (parent == null) {
            // Replace root with emptyness
            jTree.setModel(new DefaultTreeModel(new JsonJTreeNode(null, -1, new JsonNull())));
        } else {
            node.removeFromParent();
            ((DefaultTreeModel) jTree.getModel()).reload(parent);
        }
    }
}

From source file:com.crypticbit.diff.demo.swing.JSONEditPanel.java

License:Apache License

/**
 * Default constructor for the JSONEditPanel object. Creates an empty tree.
 *//*  w  ww  . jav  a2 s .c o  m*/
public JSONEditPanel() {
    setLayout(new BorderLayout());
    JSONJTreeNode root = new JSONJTreeNode(null, -1, new JsonNull());
    jTree = new JTree(root);
    jTree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
    add(new JScrollPane(jTree), BorderLayout.CENTER);
}

From source file:com.crypticbit.diff.demo.swing.JSONEditPanel.java

License:Apache License

/**
 * Deletes selected node or sets entire model to null if root node or no node is selected.
 *///w  w w.j  a  v a  2  s .  com
public void deleteNode() {
    TreePath selection = jTree.getSelectionPath();
    if (selection == null) {
        // Replace root with emptyness
        jTree.setModel(new DefaultTreeModel(new JSONJTreeNode(null, -1, new JsonNull())));
    } else {
        JSONJTreeNode node = (JSONJTreeNode) selection.getLastPathComponent();
        JSONJTreeNode parent = (JSONJTreeNode) node.getParent();
        if (parent == null) {
            // Replace root with emptyness
            jTree.setModel(new DefaultTreeModel(new JSONJTreeNode(null, -1, new JsonNull())));
        } else {
            node.removeFromParent();
            ((DefaultTreeModel) jTree.getModel()).reload(parent);
        }
    }
}

From source file:com.github.autermann.matlab.json.MatlabValueSerializer.java

License:Open Source License

@Override
public JsonElement serialize(MatlabValue value, Type type, JsonSerializationContext ctx) {
    if (value == null) {
        return new JsonNull();
    }/*ww w . ja va  2  s.  c om*/
    JsonObject object = new JsonObject();
    object.addProperty(MatlabJSONConstants.TYPE, value.getType().toString());
    object.add(MatlabJSONConstants.VALUE, value.accept(new VisitingSerializer(ctx)));
    return object;
}

From source file:com.google.gwtjsonrpc.server.JsonServlet.java

License:Apache License

private String formatResult(final ActiveCall call) throws UnsupportedEncodingException, IOException {
    final GsonBuilder gb = createGsonBuilder();
    gb.registerTypeAdapter(call.getClass(), new JsonSerializer<ActiveCall>() {
        public JsonElement serialize(final ActiveCall src, final Type typeOfSrc,
                final JsonSerializationContext context) {
            if (call.callback != null) {
                if (src.externalFailure != null) {
                    return new JsonNull();
                }/*from   w w w .ja  v  a  2s.  c  om*/
                return context.serialize(src.result);
            }

            final JsonObject r = new JsonObject();
            r.add(src.versionName, src.versionValue);
            if (src.id != null) {
                r.add("id", src.id);
            }
            if (src.xsrfKeyOut != null) {
                r.addProperty("xsrfKey", src.xsrfKeyOut);
            }
            if (src.externalFailure != null) {
                final JsonObject error = new JsonObject();
                if ("jsonrpc".equals(src.versionName)) {
                    final int code = to2_0ErrorCode(src);

                    error.addProperty("code", code);
                    error.addProperty("message", src.externalFailure.getMessage());
                } else {
                    error.addProperty("name", "JSONRPCError");
                    error.addProperty("code", 999);
                    error.addProperty("message", src.externalFailure.getMessage());
                }
                r.add("error", error);
            } else {
                r.add("result", context.serialize(src.result));
            }
            return r;
        }
    });

    final StringWriter o = new StringWriter();
    if (call.callback != null) {
        o.write(call.callback);
        o.write("(");
    }
    gb.create().toJson(call, o);
    if (call.callback != null) {
        o.write(");");
    }
    o.close();
    return o.toString();
}

From source file:com.google.gwtjsonrpc.server.MapDeserializer.java

License:Apache License

public JsonElement serialize(final Map<Object, Object> src, final Type typeOfSrc,
        final JsonSerializationContext context) {
    final Type kt = ((ParameterizedType) typeOfSrc).getActualTypeArguments()[0];
    final Type vt = ((ParameterizedType) typeOfSrc).getActualTypeArguments()[1];

    if (src == null) {
        return new JsonNull();
    }/*from w  w w.ja v  a 2  s. com*/

    if (kt == String.class) {
        final JsonObject r = new JsonObject();
        for (final Map.Entry<Object, Object> e : src.entrySet()) {
            r.add(e.getKey().toString(), context.serialize(e.getValue(), vt));
        }
        return r;
    } else {
        final JsonArray r = new JsonArray();
        for (final Map.Entry<Object, Object> e : src.entrySet()) {
            r.add(context.serialize(e.getKey(), kt));
            r.add(context.serialize(e.getValue(), vt));
        }
        return r;
    }
}

From source file:com.google.gwtjsonrpc.server.SqlDateDeserializer.java

License:Apache License

public JsonElement serialize(final java.sql.Date src, final Type typeOfSrc,
        final JsonSerializationContext context) {
    if (src == null) {
        return new JsonNull();
    }/*from w w w.  ja  va2  s.  c  o m*/
    return new JsonPrimitive(src.toString());
}

From source file:com.google.gwtjsonrpc.server.SqlTimestampDeserializer.java

License:Apache License

public JsonElement serialize(final java.sql.Timestamp src, final Type typeOfSrc,
        final JsonSerializationContext context) {
    if (src == null) {
        return new JsonNull();
    }/*from ww w.  j  a  v a2s  .c om*/
    return new JsonPrimitive(newFormat().format(src) + "000000");
}

From source file:org.apache.tika.io.json.JsonMetadataSerializer.java

License:Apache License

/**
 * /*from w  ww  . j  av a 2s. c om*/
 * @param metadata
 * @param type
 * @param context
 * @return JsonObject with key/value(s) pairs or JsonNull if metadata is null.
 */
@Override
public JsonElement serialize(Metadata metadata, Type type, JsonSerializationContext context) {
    if (metadata == null) {
        return new JsonNull();
    }
    String[] names = getNames(metadata);
    if (names == null) {
        return new JsonNull();
    }

    JsonObject root = new JsonObject();

    for (String n : names) {

        String[] vals = metadata.getValues(n);
        if (vals == null) {
            //silently skip?
            continue;
        }

        if (vals.length == 1) {
            root.addProperty(n, vals[0]);
        } else {
            JsonArray jArr = new JsonArray();
            for (int i = 0; i < vals.length; i++) {
                jArr.add(new JsonPrimitive(vals[i]));
            }
            root.add(n, jArr);
        }
    }
    return root;
}