Example usage for com.google.gson JsonElement isJsonNull

List of usage examples for com.google.gson JsonElement isJsonNull

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Introduction

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

Prototype

public boolean isJsonNull()

Source Link

Document

provides check for verifying if this element represents a null value or not.

Usage

From source file:org.hibernate.search.elasticsearch.query.impl.TwoWayFieldBridgeProjection.java

License:LGPL

private Object convertFieldValue(JsonObject hit, ConversionContext conversionContext) {
    Document tmp = new Document();

    for (String objectFieldName : objectFieldNames) {
        JsonElement jsonValue = extractFieldValue(hit.get("_source").getAsJsonObject(), objectFieldName);
        if (jsonValue == null || jsonValue.isJsonNull()) {
            continue;
        }/*from   w w  w .  jav  a  2s. c  o  m*/
        JsonObject jsonObject = jsonValue.getAsJsonObject();
        addDocumentFieldsRecursively(tmp, jsonObject, objectFieldName);
    }

    // Add to the document the additional fields created when indexing the value
    for (PrimitiveProjection subProjection : primitiveProjections.values()) {
        subProjection.addDocumentField(tmp, hit, conversionContext);
    }

    return conversionContext.twoWayConversionContext(bridge).get(absoluteName, tmp);
}

From source file:org.hibernate.search.elasticsearch.query.impl.TwoWayFieldBridgeProjection.java

License:LGPL

public void addDocumentFieldsRecursively(Document tmp, JsonElement value, String fieldName) {
    if (value == null || value.isJsonNull()) {
        return;/* w w w. j a  v a 2 s  .  c  o m*/
    }

    PrimitiveProjection configuredProjection = primitiveProjections.get(fieldName);
    if (configuredProjection != null) {
        // Those projections are handled separately, see the calling method
        return;
    }

    if (value.isJsonObject()) {
        JsonObject jsonObject = value.getAsJsonObject();
        for (Map.Entry<String, JsonElement> entry : jsonObject.entrySet()) {
            String nestedFieldName = fieldName + "." + entry.getKey();
            JsonElement nestedFieldValue = entry.getValue();
            addDocumentFieldsRecursively(tmp, nestedFieldValue, nestedFieldName);
        }
    } else if (value.isJsonArray()) {
        JsonArray jsonArray = value.getAsJsonArray();
        for (JsonElement nestedValue : jsonArray) {
            addDocumentFieldsRecursively(tmp, nestedValue, fieldName);
        }
    } else {
        JsonPrimitive primitive = value.getAsJsonPrimitive();

        if (primitive.isBoolean()) {
            tmp.add(new StringField(fieldName, String.valueOf(primitive.getAsBoolean()), Store.NO));
        } else if (primitive.isNumber()) {
            tmp.add(new DoubleField(fieldName, primitive.getAsDouble(), Store.NO));
        } else if (primitive.isString()) {
            tmp.add(new StringField(fieldName, primitive.getAsString(), Store.NO));
        } else {
            // TODO HSEARCH-2255 Better raise an exception?
            tmp.add(new StringField(fieldName, primitive.getAsString(), Store.NO));
        }
    }
}

From source file:org.hillview.storage.JsonFileLoader.java

License:Open Source License

private static ContentsKind getKind(@Nullable JsonElement e) {
    if (e == null || e.isJsonNull())
        return ContentsKind.None;
    if (e.isJsonArray() || e.isJsonObject())
        throw new RuntimeException("Values must be simple " + e);
    JsonPrimitive prim = e.getAsJsonPrimitive();
    if (prim.isBoolean())
        return ContentsKind.String;
    if (prim.isNumber())
        return ContentsKind.Double;
    if (prim.isString())
        return ContentsKind.String;
    throw new RuntimeException("Unexpected JSON value " + prim);
}

From source file:org.hillview.storage.JsonFileLoader.java

License:Open Source License

void append(IAppendableColumn[] columns, JsonElement e) {
    if (!e.isJsonObject())
        this.error("JSON array element is not a JsonObject");
    JsonObject obj = e.getAsJsonObject();
    for (IAppendableColumn col : columns) {
        JsonElement el = obj.get(col.getName());
        if (el == null || el.isJsonNull()) {
            col.appendMissing();//from  www.j a va  2 s  .  c  om
            continue;
        }

        if (!el.isJsonPrimitive())
            this.error("JSON array element is a non-primitive field");
        JsonPrimitive prim = el.getAsJsonPrimitive();

        if (prim.isBoolean()) {
            col.append(prim.getAsBoolean() ? "true" : "false");
        } else if (prim.isNumber()) {
            col.append(prim.getAsDouble());
        } else if (prim.isString()) {
            col.parseAndAppendString(prim.getAsString());
        } else {
            this.error("Unexpected Json value" + prim.toString());
        }
    }
}

From source file:org.i3xx.step.uno.impl.util.GsonHashMapDeserializer.java

License:Apache License

public Object deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
        throws JsonParseException {
    //System.out.println("GND deserialize: "+json.toString());

    if (json.isJsonNull())
        return null;
    else if (json.isJsonPrimitive())
        return handlePrimitive(json.getAsJsonPrimitive());
    else if (json.isJsonArray())
        return handleArray(json.getAsJsonArray(), context);
    else/*from ww  w. java 2  s  . c o  m*/
        return handleObject(json.getAsJsonObject(), context);
}

From source file:org.indigo.occiprobe.openstack.CmdbClient.java

License:Apache License

/**
 * This method access the CMDB service in order to retrieve the available 
 * data from a Cloud Provider (i.e. its location, provided services, etc.)
 * @param providerId Represents the identifier of the Cloud provider
 * @return An object with all the information retrieved
 *///from   ww w.  j  a va 2s .  c  o  m
public CloudProviderInfo getProviderData(String providerId) {
    // Call to CMDB API
    String providerUrl = cmdbUrl + "/provider/id/" + providerId + "/has_many/services?include_docs=true";
    WebTarget target = client.target(providerUrl);
    Invocation.Builder invocationBuilder = target.request();
    Response response = invocationBuilder.get();
    String message = response.readEntity(String.class);

    //System.out.println(message);

    // Retrieve the services list
    JsonElement jelement = new JsonParser().parse(message);
    JsonObject parsedRes = jelement.getAsJsonObject();
    JsonArray listArray = parsedRes.getAsJsonArray("rows");
    if (listArray.isJsonNull() || listArray.size() == 0) {
        return null;
    }

    String occiEndpoint = null;
    String keystoneEndpoint = null;
    int type = CloudProviderInfo.OPENNEBULA;
    boolean isMonitored = false;
    boolean isBeta = false;
    boolean isProduction = false;

    Iterator<JsonElement> myIter = listArray.iterator();
    while (myIter.hasNext()) {
        JsonObject currentResource = myIter.next().getAsJsonObject();
        JsonObject currentDoc = currentResource.get("doc").getAsJsonObject();
        JsonObject currentData = currentDoc.get("data").getAsJsonObject();

        String currentServiceType = currentData.get("service_type").getAsString();
        String currentType = currentData.get("type").getAsString();
        JsonElement jsonEndpoint = currentData.get("endpoint");
        String currentEndpoint = null;
        if (jsonEndpoint == null || jsonEndpoint.isJsonNull()) {
            return null;
        }
        currentEndpoint = jsonEndpoint.getAsString();

        if (currentServiceType.equalsIgnoreCase("eu.egi.cloud.vm-management.occi")) {
            occiEndpoint = currentEndpoint;
            JsonElement currentBeta = currentData.get("beta");
            JsonElement currentProduction = currentData.get("in_production");
            JsonElement currentMonitored = currentData.get("node_monitored");

            // Retrieve the rest of info from the OCCI service
            if (currentBeta != null && currentBeta.getAsString().equalsIgnoreCase("Y")) {
                isBeta = true;
            }
            if (currentMonitored != null && currentMonitored.getAsString().equalsIgnoreCase("Y")) {
                isMonitored = true;
            }
            if (currentProduction != null && currentProduction.getAsString().equalsIgnoreCase("Y")) {
                isProduction = true;
            }
        } else if (currentServiceType.equalsIgnoreCase("eu.egi.cloud.vm-management.openstack")) {
            keystoneEndpoint = currentEndpoint;
            type = CloudProviderInfo.OPENSTACK;
        }
    }

    CloudProviderInfo myProvider = new CloudProviderInfo(providerId, occiEndpoint, keystoneEndpoint, type,
            isMonitored, isBeta, isProduction);

    return myProvider;
}

From source file:org.jboss.aerogear.android.cookbook.agreddit.PageConsumer.java

License:Apache License

private String getFromJSON(JsonElement element, String nextIdentifier) {
    String[] identifiers = nextIdentifier.split("\\.");
    for (String identifier : identifiers) {
        element = element.getAsJsonObject().get(identifier);
    }//from   w  w  w .j  av  a 2 s  . c  o m
    if (element.isJsonNull()) {
        return null;
    }

    return element.getAsString();
}

From source file:org.jboss.aerogear.android.impl.pipeline.paging.URIBodyPageParser.java

License:Apache License

private String getFromJSON(JsonElement element, String nextIdentifier) {
    String[] identifiers = nextIdentifier.split("\\.");
    for (String identifier : identifiers) {
        element = element.getAsJsonObject().get(identifier);
    }/* w ww  .  ja  v  a 2  s.c o  m*/

    if (element.isJsonNull()) {
        return null;
    } else {
        return element.getAsString();
    }
}

From source file:org.jbpm.form.builder.services.encoders.FormRepresentationDecoderImpl.java

License:Apache License

private Object fromJsonValue(JsonElement elem) {
    if (elem.isJsonPrimitive() && elem.getAsJsonPrimitive().isString()) {
        return elem.getAsString();
    } else if (elem.isJsonPrimitive() && elem.getAsJsonPrimitive().isNumber()) {
        return elem.getAsNumber();
    } else if (elem.isJsonArray()) {
        return asList(elem.getAsJsonArray());
    } else if (elem.isJsonNull()) {
        return null;
    } else if (elem.isJsonObject()) {
        return asMap(elem.getAsJsonObject());
    } else {/*  w  w w  .j  av a 2s.c o  m*/
        return "";
    }
}

From source file:org.jclouds.json.internal.ParseObjectFromElement.java

License:Apache License

public Object apply(JsonElement input) {
    Object value = null;/*from w w w  .  ja  v a2s  .  c  o  m*/
    if (input == null || input.isJsonNull()) {
        value = null;
    } else if (input.isJsonPrimitive()) {
        JsonPrimitive primitive = input.getAsJsonPrimitive();
        if (primitive.isNumber()) {
            value = primitive.getAsNumber();
        } else if (primitive.isBoolean()) {
            value = primitive.getAsBoolean();
        } else {
            value = primitive.getAsString();
        }
    } else if (input.isJsonArray()) {
        value = Lists.newArrayList(Iterables.transform(input.getAsJsonArray(), this));
    } else if (input.isJsonObject()) {
        value = Maps.<String, Object>newLinkedHashMap(
                Maps.transformValues(JsonObjectAsMap.INSTANCE.apply(input.getAsJsonObject()), this));
    }
    return value;
}