public List getTableInfoFromJsonSchema()

in tools/query_verification/src/main/java/com/google/bigquery/BigQueryManager.java [205:243]
31 lines of code
8 McCabe index (conditional complexity)

    public List<TableInfo> getTableInfoFromJsonSchema() {
        List<TableInfo> tableInfos = new ArrayList<TableInfo>();
        for (JsonElement schemaElement : schema.getJsonArray()) {
            if (schema.getJsonArray().size() == 0) {
                return null;
            }
            JsonObject schemaObject = schemaElement.getAsJsonObject();

            if (schemaObject.has("tableReference")) {
                JsonObject tableReference = schemaObject.get("tableReference").getAsJsonObject();

                if (tableReference.has("datasetId") && tableReference.has("tableId")) {
                    TableId tableId = TableId.of(tableReference.get("datasetId").getAsString(), tableReference.get("tableId").getAsString());

                    // Deserialize fields
                    FieldList fieldList = null;
                    try {
                        JsonArray schemaFields = schemaObject.getAsJsonArray("fields");

                        Gson gson = new GsonBuilder()
                                .registerTypeAdapter(FieldList.class, new BigQuerySchemaJsonDeserializer())
                                .create();
                        fieldList = gson.fromJson(schemaFields, FieldList.class);
                    } finally {
                        if (fieldList == null || fieldList.isEmpty()) {
                            // Error in formatting of fields
                            throw new IllegalArgumentException(tableId.getTable() + " is not correctly formatted.");
                        }

                        Schema tableSchema = Schema.of(fieldList);
                        TableDefinition tableDefinition = StandardTableDefinition.of(tableSchema);

                        tableInfos.add(TableInfo.newBuilder(tableId, tableDefinition).build());
                    }
                }
            }
        }
        return tableInfos;
    }