Example usage for com.google.gson JsonElement isJsonNull

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.backend.elasticsearch.types.codec.impl.GeoPointFieldCodec.java

License:LGPL

@Override
public GeoPoint decode(JsonElement element) {
    if (element == null || element.isJsonNull()) {
        return null;
    }/*from w  ww.j  a  v  a 2 s  . co  m*/
    JsonObject object = JsonElementTypes.OBJECT.fromElement(element);
    double latitude = LATITUDE_ACCESSOR.get(object).orElseThrow(log::elasticsearchResponseMissingData);
    double longitude = LONGITUDE_ACCESSOR.get(object).orElseThrow(log::elasticsearchResponseMissingData);
    return new ImmutableGeoPoint(latitude, longitude);
}

---

From source file:org.hibernate.search.backend.elasticsearch.types.codec.impl.IntegerFieldCodec.java

License:LGPL

@Override
public Integer decode(JsonElement element) {
    if (element == null || element.isJsonNull()) {
        return null;
    }//from   w ww. j  a  v a 2s .co m
    return JsonElementTypes.INTEGER.fromElement(element);
}

---

From source file:org.hibernate.search.backend.elasticsearch.types.codec.impl.JsonStringFieldCodec.java

License:LGPL

@Override
public String decode(JsonElement element) {
    if (element == null || element.isJsonNull()) {
        return null;
    }/*w w  w . j a va 2s.c o  m*/
    return gson.toJson(element);
}

---

From source file:org.hibernate.search.backend.elasticsearch.types.codec.impl.LocalDateFieldCodec.java

License:LGPL

@Override
public LocalDate decode(JsonElement element) {
    if (element == null || element.isJsonNull()) {
        return null;
    }//from   ww  w.  j  av a 2  s.co m
    String stringValue = JsonElementTypes.STRING.fromElement(element);
    return LocalDate.parse(stringValue, delegate);
}

---

From source file:org.hibernate.search.backend.elasticsearch.types.codec.impl.StringFieldCodec.java

License:LGPL

@Override
public String decode(JsonElement element) {
    if (element == null || element.isJsonNull()) {
        return null;
    }/*  ww  w.jav  a 2s.co  m*/
    return JsonElementTypes.STRING.fromElement(element);
}

---

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

License:LGPL

private JsonObject getFilteredQuery(JsonElement originalQuery, Set<String> typeNames) {
    JsonArray filters = new JsonArray();

    JsonObject tenantFilter = getTenantIdFilter();
    if (tenantFilter != null) {
        filters.add(tenantFilter);//  w  ww.j  av a2s . c  o  m
    }

    JsonArray typeFilters = new JsonArray();
    for (String typeName : typeNames) {
        typeFilters.add(getEntityTypeFilter(typeName));
    }

    // wrap type filters into should if there is more than one
    filters.add(ToElasticsearch.condition("should", typeFilters));

    // facet filters
    for (Query query : getFacetManager().getFacetFilters().getFilterQueries()) {
        filters.add(ToElasticsearch.fromLuceneQuery(query));
    }

    // user filter
    if (userFilter != null) {
        filters.add(ToElasticsearch.fromLuceneQuery(userFilter));
    }

    if (!filterDefinitions.isEmpty()) {
        for (FullTextFilterImpl fullTextFilter : filterDefinitions.values()) {
            JsonObject filter = buildFullTextFilter(fullTextFilter);
            if (filter != null) {
                filters.add(filter);
            }
        }
    }

    JsonBuilder.Object boolBuilder = JsonBuilder.object();

    if (originalQuery != null && !originalQuery.isJsonNull()) {
        boolBuilder.add("must", originalQuery);
    }

    if (filters.size() == 1) {
        boolBuilder.add("filter", filters.get(0));
    } else {
        boolBuilder.add("filter", filters);
    }

    return JsonBuilder.object().add("bool", boolBuilder.build()).build();
}

---

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

License:LGPL

@Override
public Object convertHit(JsonObject hit, ConversionContext conversionContext) {
    JsonElement value = extractFieldValue(hit.get("_source").getAsJsonObject(), absoluteName);
    if (value == null || value.isJsonNull()) {
        return null;
    }//  ww  w.j  ava 2 s . c  om

    // TODO: HSEARCH-2255 should we do it?
    if (!value.isJsonPrimitive()) {
        throw LOG.unsupportedProjectionOfNonJsonPrimitiveFields(value);
    }

    JsonPrimitive primitive = value.getAsJsonPrimitive();

    if (primitive.isBoolean()) {
        return primitive.getAsBoolean();
    } else if (primitive.isNumber()) {
        // TODO HSEARCH-2255 this will expose a Gson-specific Number implementation; Can we somehow return an Integer,
        // Long... etc. instead?
        return primitive.getAsNumber();
    } else if (primitive.isString()) {
        return primitive.getAsString();
    } else {
        // TODO HSEARCH-2255 Better raise an exception?
        return primitive.toString();
    }
}

---

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

License:LGPL

public void addDocumentField(Document tmp, JsonElement jsonValue) {
    if (jsonValue == null || jsonValue.isJsonNull()) {
        return;/*  w w  w.  j  ava 2  s. co m*/
    }
    switch (fieldType) {
    case INTEGER:
        tmp.add(new IntField(absoluteName, jsonValue.getAsInt(), Store.NO));
        break;
    case LONG:
        tmp.add(new LongField(absoluteName, jsonValue.getAsLong(), Store.NO));
        break;
    case FLOAT:
        tmp.add(new FloatField(absoluteName, jsonValue.getAsFloat(), Store.NO));
        break;
    case DOUBLE:
        tmp.add(new DoubleField(absoluteName, jsonValue.getAsDouble(), Store.NO));
        break;
    case UNKNOWN_NUMERIC:
        throw LOG.unexpectedNumericEncodingType(rootTypeMetadata.getType(), absoluteName);
    case BOOLEAN:
        tmp.add(new StringField(absoluteName, String.valueOf(jsonValue.getAsBoolean()), Store.NO));
        break;
    default:
        tmp.add(new StringField(absoluteName, jsonValue.getAsString(), Store.NO));
        break;
    }
}

---

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

License:LGPL

@Override
public Object convertHit(JsonObject hit, ConversionContext conversionContext) {
    JsonElement jsonValue = extractFieldValue(hit.get("_source").getAsJsonObject(), absoluteName);
    if (jsonValue == null || jsonValue.isJsonNull()) {
        return null;
    }//from w  w w.j ava  2  s.c  o  m
    switch (fieldType) {
    case INTEGER:
        return jsonValue.getAsInt();
    case LONG:
        return jsonValue.getAsLong();
    case FLOAT:
        return jsonValue.getAsFloat();
    case DOUBLE:
        return jsonValue.getAsDouble();
    case UNKNOWN_NUMERIC:
        throw LOG.unexpectedNumericEncodingType(rootTypeMetadata.getType(), absoluteName);
    case BOOLEAN:
        return jsonValue.getAsBoolean();
    default:
        return jsonValue.getAsString();
    }
}

---

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

License:LGPL

public EntityInfo convert(SearchResult searchResult, JsonObject hit) {
    String type = hit.get("_type").getAsString();
    EntityIndexBinding binding = targetedEntityBindingsByName.get(type);

    if (binding == null) {
        LOG.warnf("Found unknown type in Elasticsearch index: " + type);
        return null;
    }// ww w  . j  av a  2  s. c  o m

    DocumentBuilderIndexedEntity documentBuilder = binding.getDocumentBuilder();
    IndexedTypeIdentifier typeId = documentBuilder.getTypeIdentifier();

    ConversionContext conversionContext = new ContextualExceptionBridgeHelper();
    conversionContext.setConvertedTypeId(typeId);
    FieldProjection idProjection = idProjectionByEntityBinding.get(binding);
    Object id = idProjection.convertHit(hit, conversionContext);
    Object[] projections = null;

    if (projectedFields != null) {
        projections = new Object[projectedFields.length];

        for (int i = 0; i < projections.length; i++) {
            String field = projectedFields[i];
            if (field == null) {
                continue;
            }
            switch (field) {
            case ElasticsearchProjectionConstants.SOURCE:
                projections[i] = hit.getAsJsonObject().get("_source").toString();
                break;
            case ElasticsearchProjectionConstants.ID:
                projections[i] = id;
                break;
            case ElasticsearchProjectionConstants.OBJECT_CLASS:
                projections[i] = typeId.getPojoType();
                break;
            case ElasticsearchProjectionConstants.SCORE:
                projections[i] = hit.getAsJsonObject().get("_score").getAsFloat();
                break;
            case ElasticsearchProjectionConstants.SPATIAL_DISTANCE:
                JsonElement distance = null;
                // if we sort by distance, we need to find the index of the DistanceSortField and use it
                // to extract the values from the sort array
                // if we don't sort by distance, we use the field generated by the script_field added earlier
                if (sortByDistanceIndex != null) {
                    distance = hit.getAsJsonObject().get("sort").getAsJsonArray().get(sortByDistanceIndex);
                } else {
                    JsonElement fields = hit.getAsJsonObject().get("fields");
                    if (fields != null) { // "fields" seems to be missing if there are only null results in script fields
                        distance = hit.getAsJsonObject().get("fields").getAsJsonObject()
                                .get(SPATIAL_DISTANCE_FIELD);
                    }
                }
                if (distance != null && distance.isJsonArray()) {
                    JsonArray array = distance.getAsJsonArray();
                    distance = array.size() >= 1 ? array.get(0) : null;
                }
                if (distance == null || distance.isJsonNull()) {
                    projections[i] = null;
                } else {
                    Double distanceAsDouble = distance.getAsDouble();

                    if (distanceAsDouble == Double.MAX_VALUE || distanceAsDouble.isInfinite()) {
                        /*
                         * When we extract the distance from the sort, its default value is:
                         *  - Double.MAX_VALUE on older ES versions (5.0 and lower)
                         *  - Double.POSITIVE_INFINITY on newer ES versions (from somewhere around 5.2 onwards)
                         */
                        projections[i] = null;
                    } else {
                        projections[i] = distance.getAsDouble();
                    }
                }
                break;
            case ElasticsearchProjectionConstants.TOOK:
                projections[i] = searchResult.getTook();
                break;
            case ElasticsearchProjectionConstants.TIMED_OUT:
                projections[i] = searchResult.getTimedOut();
                break;
            case ElasticsearchProjectionConstants.THIS:
                // Use EntityInfo.ENTITY_PLACEHOLDER as placeholder.
                // It will be replaced when we populate
                // the EntityInfo with the real entity.
                projections[i] = EntityInfo.ENTITY_PLACEHOLDER;
                break;
            default:
                FieldProjection projection = fieldProjectionsByEntityBinding.get(binding)[i];
                projections[i] = projection.convertHit(hit, conversionContext);
            }
        }
    }

    return new EntityInfoImpl(typeId, documentBuilder.getIdPropertyName(), (Serializable) id, projections);
}

---

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