Json Blob Example


Direct access to JSON files with Azure SQL it's time to point to the Azure Blob Account where your JSON files are stored by creating a Examples of Bulk Access to Data in Azure Blob Storage. The script contains a jsonval function which operates on two variables, json and prop. Upon successfully storing the JSON blob, a 201 response will be returned. You can make the Blob transient and then it won't be serialized but it will be null upon deserialization: private transient Blob data; I think your only other option is to create a separate object for the blob and only reference it in the RawDataEntity and the use a LoadableDetachableModel. Parse single JSON blobs. Or you cold us a blob field and serialize MsgPack into it then look it up by key like you do in redis. •However, we found that if the attacker can control the expected type used. For examples, a GUI wallet, an web applications allowing for accessing wallet balance online, and block explorer. A typical document is:. In this scenario, the raw JSON files can differ in format per file, but the output is consistent per file so analytics can be performed on the data much, much easier. Param Type Details; json string. JSON examples. For example, you can join a user profile collection in MongoDB with a directory of event logs in. Serialize the note with all the information in json. Step 1: Create the AJAX Request Flickr’s photostream feeds are relatively easy to access. For more details on its features, take a look at Indexing Documents in Azure Blob Storage with Azure Search. It's important to note that json auto works by searching for json blobs beginning at the end of the message. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy. Enter your JSON or JSONLines data below and Press the Convert button. Get BLOB image from mysql database via JSON I have an image stored as BLOB in my MySQL database. Just check out Network tab in Dev tools while you play the video to see what you are actually fetching. Since there seem to be no tutorials and/or examples of how to use json-rpc. Welcome to the online JSON Viewer, JSON Formatter and JSON Beautifier at codebeautiy. Solved: Hello guys, I'm trying to get JSON file data from AZURE BLOB STORAGE generated from Stream Analytics, when I load it in P. Ensure that the Projects directory has read and write permissions for everyone. If data is returned as a JSON string, the key/value pairs encoded within the string are not recognized as separate entities, so you must use the JSON parser to convert the string into a JSON object to make the data accessible for subsequent use. com · 12 Comments I used to spend considerably more time begging and, sometimes, badgering government agencies for data. A BLOB is a binary large object that can hold a variable amount of data. When dealing with webservices or standard http pages, json source is capable of executing the most common HTTP requests type, such as GET/POST/PUT/DELETE. Tips & Tricks. JSON Blobs in postgreSQL with Bookshelf. From this example, the JSON_VAL function in the SELECT clause applies on the VALUE column of JSON_TABLE output. When used on an anchor, this attribute signifies that the resource it points to should be downloaded by the browser rather than navigating to it. NET type can be used with FromObject to create JSON. 2) This article describes the server side support for JSON in Oracle Database 12c Release 1 (12. Indexing JSON objects. Should I use Stream or CloudBlockBlob ? I need to deseralize json using c#. Solved: Hello guys, I'm trying to get JSON file data from AZURE BLOB STORAGE generated from Stream Analytics, when I load it in P. Read Azure Blob Storage Files in SSIS (CSV, JSON, XML) Let´s start with an example. JArray instances and then writes the JSON back out again. Documentation RFC 7158 , The Javascript Object Notation (JSON) Data Interchange Format JSON Example Reference What is JSON, JSON-RPC and JSON-RPC-Java? , Slashdot, 2005-01-24 Description. This domain is established to be used for illustrative examples in documents. We have seen several customers asking us this question- "Can I upload the photos taken using the Camera control in PowerApps to an Azure blob storage?". They have the added advantage of being able to index the columns otherwise hidden in the blob. End of 2012 it moved back to the WHATWG. They are not included as part of the package, though. Emp and dbo. JSON Blob is a web-based tool to create, edit, view, format, and share JSON. A bash script which demonstrates parsing a JSON string to extract a property value. Azure Blob ODBC Driver (for JSON Files) Azure Blob ODBC Driver for JSON files can be used to read JSON Files stored in Azure Container. NET objects into their JSON equivalent and back again by mapping the. Angular file upload Demo Visit ng-file-upload on github + edit upload html reset to default. In the past, data analysts and engineers had to revert to a specialized document store like MongoDB for JSON processing. Work with JSON files with Azure SQL. In this SSIS Azure Blob Source for CSV/JSON/XML File task example, we will read CSV/JSON/XML files from Azure Blob Storage to SQL Server database. The files that are getting imported are JSON files, with one entry on each line. interface UserJSON { name: string; age: number; created: string; } Then I convert from User-> UserJSON before ‘stringifying’ to JSON and convert from UserJSON-> User after parsing from JSON. If it helps you here is an image of my reference json files in the blob storage: That's the problem i don't understand to solve. Instead of pointing you to the manual, I will explain how this works using a sample. The body of the request should contain valid JSON that will used as the JSON Blob. How to extract JSON fields from an already extracted field at search time? 1 Answer. I'm trying to create a rest service for my android application where an external database returns items to be stored in the applications local database. No good: This gives JSON a bad name. JSON Blob is a web-based tool to create, edit, view, format, and share JSON. Use this clause to specify the JSON data to be evaluated. work with JSON data. Storing JSON in BLOB columns. Hi What you need to do is use the PARSE and DOMAIN clauses of the ESQL CREATE statement passing the JSON data as a BLOB type, see CREATE statement. To create an empty JSON container, create it based on one of the subtypes. original link [2015/05/13] The code in this post has been updated to work with the “Windows Azure Storage 4. Salesforce Developer Network: Salesforce1 Developer Resources. A simple example is the following statement, which changes the name attribute in a JSON value: This update can be performed as a partial update because it takes a JSON column (json_col), modifies one of its members, and then stores it into the same column as it reads from (json_col). Add extracted from open source projects. Furthermore, the Lease Blob operation requires the use of an x-ms-lease-action to indicate whether the. JSON functionalities in Azure SQL Database can help you in different scenarios. Script: Loading JSON Data into a Relational Table ¶. So, for example, any field that contains an embedded double quote mark, or an embedded newline, or anything else that needs escaping according to the JSON spec, will cause failure. Blobs allow you to construct file like objects on the client that you can pass to apis that expect urls instead of requiring the server provides the file. BLOB - Video, Audio, PDF, JSON… (Just convert it to byte[]) - I’m going to convert my JSON to a string and store it in a blob. And in text mode you have very little control over how it works - you can't, for example, specify a different ESCAPE character. Internally, FromObject will use the JsonSerializer to serialize the object to LINQ to JSON objects instead of text. 4 added the ability to store JSON as “Binary JSON” , which strips out insignificant whitespace (not a big deal), adds a tiny bit of overhead when inserting data, but provides a huge benefit when querying it: indexes. New-Now supports JSONLines. Document databases such as MongoDB use JSON documents in order to store records, just as tables and rows store records in a relational database. A single query can join data from multiple datastores. 15 This project was started in the cause. Processing is done locally: no data send to server. Azure Storage Blob Service REST API: Sample code to fetch the list of blobs in the specified container. You can rate examples to help us improve the quality of examples. Today, many prefer it to XML, and the JSON data format is used by a number of NoSQL data stores. So, let's get our database schema out of the way first. Azure Storage Blob Simple Upload; Put Blob: Upload Contents of String Variable to. However, you should know that Oracle uses UTF-8 when processing JSON data. A Blob can be used in a number of places, including saving it to indexedDB, writing it to the HTML5 File System, or creating an Blob URL, as seen in this example. Serialization. All of this makes JSON an important step towards user-friendly computing. Load BLOB/CLOB/JSON data from files in the deferred mode into a Teradata table. JSON Blobs in postgreSQL with Bookshelf. A typical document is:. Also uses the static BlobHelper to get the blob container. For example: TREAT (elem AS JSON_OBJECT_T). I've listed the ones that are helpful for day to day usage. Liberate the desktop. EmpDetails are repective sink tables in Azure SQL. You can vote up the examples you like or vote down the ones you don't like. It's the de facto standard for document exchange. For example basic usage (which can be easily modified for Bitcoin RPC), see the Jansson example github_commits. json fixture cy. JSFiddle or its authors are not responsible or liable for any loss or damage of any kind during the usage of provided code. net domain name of your Azure Databricks deployment. Would it be possible to set this parameter dynamically based on some user selection in UI (e. So, let's get our database schema out of the way first. They have the added advantage of being able to index the columns otherwise hidden in the blob. Everything works, with no lease problems and correct Json content, when child LA returns a non empty "Documents" array and blob size is a lot bigger, for example 16k. The following are code examples for showing how to use azure. HTTP Post form data example. Should I use Stream or CloudBlockBlob ? I need to deseralize json using c#. New-Now supports JSONLines. I like JSON simple library to start with because it's really simple, and it provide direct mapping between Java classes and JSON variables. Render Template. So I'm afraid it isn't doable to firstly copy json into blob then use the lookup and foreach activity to flattern the "recommendation_params" and finally copy into different files. JSON is "self-describing" and easy to understand. We can also convert any JSON received from the server into JavaScript objects. Examples¶ To view information about a Git blob object. One exception is when using JSON_EXTRACT() in which case strings are unescaped before comparison. However, you should know that Oracle uses UTF-8 when processing JSON data. Following is a simple example to encode a JSON object using Java JSONObject which is a subclass of java. I was under the (FALSE!) impression that it was not possible to put an IS JSON check constraint on a BLOB column, simply because I tried once and got an exception. The properties we want in the JSON file, ideally, include: GOAL #1) it's still a valid JSON file in its entirety. dumps(response. If the json_name field option is specified, the specified value will be used as the key instead. In single-line mode, a file can be split into many parts and read in parallel. © 2019 Myjson 1. In the lower half of the publishing dialog, you can see a link to your data - but it only gives us HTML (try to change output from "html" to "json" - it doesn't work). It's a bit frustrating because sometimes i have up to five reference data inputs and i have to do the manually work for all of them to start the streaming job. [2015/05/13] The code in this post has been updated to work with the "Windows Azure Storage 4. You can vote up the examples you like or vote down the ones you don't like. Begin mea culpa. A promise that resolves with a Blob. Like JSON, BSON sup­ports the em­bed­ding of doc­u­ments and ar­rays with­in oth­er doc­u­ments and ar­rays. The term "blob" actually stands for "Binary Large Object" and is used for storing information in databases. com", a domain that contains a CNAME to ". LinkedHashMap. To run simply pass in the file or URL as the first parameter:. Windows Azure Storage team is excited to announce the release of JSON support for Windows Azure Tables as part of version "2013-08-15". You can upload files of any type, and you must use a multipart message that conforms to the MIME multipart content-type standard. For detailed information on deferred LOB/JSON processing, see Teradata Parallel Transporter Reference. All rights reserved. To cast a JSON_ELEMENT_T into a subtype (for example, JSON_OBJECT_T), you need to perform an explicit cast using TREAT AS. PL/SQL Object Types for JSON in Oracle Database 12c Release 2 (12. Everything worked fine but now I'm trying to use Power BI and get data from AZURE BLOB STORAGE that contains json file (generated from Stream Analytics) and when I load it in P. Example: Creating tables to store JSON data. JSON data is always stored as a string (into a VARCHAR2, CLOB or BLOB), so NLS_NUMERIC_CHARACTERS has absolutely no influence when entering JSON data. In this SSIS Azure Blob Source for CSV/JSON/XML File task example, we will read CSV/JSON/XML files from Azure Blob Storage to SQL Server database. They are not included as part of the package, though. Job Example PTS00025, PTS00028 – Export BLOB/CLOB Data from One Teradata Database Table to Another Sample Script For the sam. Drill supports a variety of NoSQL databases and file systems, including HBase, MongoDB, MapR-DB, HDFS, MapR-FS, Amazon S3, Azure Blob Storage, Google Cloud Storage, Swift, NAS and local files. json(xml(triggerBody())) Using a different source/destination. A single query can join data from multiple datastores. It's a bit frustrating because sometimes i have up to five reference data inputs and i have to do the manually work for all of them to start the streaming job. You can rate examples to help us improve the quality of examples. Convert JSON to Python Object (Dict) To convert JSON to a Python dict use this:. This example shows the JSON to specify a single 20 GiB Amazon Elastic Block Store (Amazon EBS) device to be mapped at /dev/sdb on the launching instance. And store them in your tables. How to extract key value pairs from my sample data and have the output in JSON format? 1 Answer. Json to write it to an object. JSON is a text format that is completely language-independent but uses conventions that are familiar to programmers of the C family of languages, including C, C++, C#, Java, JavaScript. The quickest method of converting between JSON text and a. The Blob() constructor can create blobs from other objects. Save to Azure Blob Storage the json file in a temporary container. Output Options Not working? If JSON variable A, name the array to convert: Still not happy - try an alternative conversion NOTE - you can change the column names below by overwriting the Field Name value. Also uses the static BlobHelper to get the blob container. Storing JSON in BLOB columns. Run the scripts in this file to reformat some existing data as JSON data, test sample queries and reports over the JSON data, index the JSON data. Dynamic columns allow one to store different sets of columns for each row in a table. The responseType property of the XMLHttpRequest object can be set to change the expected response type from the server. For this example, we will not use the node. Here's my example 'blob' schema. But in the JSON blob files for the hotel rooms, the hotel identifier is named Id. For example, assume you have the following JSON document in Azure Blob storage:. Please note that retrieving the BLOB from the database requires no additional complication and can be accomplished via your normal mysqli functions. It's the de facto standard for document exchange. It assumes that table my_table has a JSON column, json_doc, which uses BLOB storage. Describes options for uploading objects to a Cloud Storage bucket. For example: TREAT (elem AS JSON_OBJECT_T). My app would be hosted at "myapp. So in the Json below I would expect to get a “Node ID” of things like line_items. 0-preview" NuGet package Applying the ModelCommand pattern I was able to create a command that enables us to upload a serializable object as JSON and store it in an existing Blob Container. PostgreSQL provides two JSON data types: JSON and JSONB for storing JSON data. Note that the XML examples below don't encode the data type (e. Someone can tell me why in Power BI I don't able to view data on json file? thanks. net domain name of your Azure Databricks deployment. It is easy to create/update json file using scripting languages. They are extracted from open source Python projects. I'm trying to extract a very long string into clob from json_object_t and got some weird database behaviour (12. A simple JSON store for your web or mobile app. You can vote up the examples you like or vote down the ones you don't like. {"widget": { "debug": "on", "window": { "title": "Sample Konfabulator Widget", "name": "main_window", "width": 500, "height": 500 }, "image": { "src": "Images/Sun. From this example, the JSON_VAL function in the SELECT clause applies on the VALUE column of JSON_TABLE output. The argument for putting them under this page is that taxonomies are usually added in the editor itself, and only managed on the archive pages. Limitation: COLUMN_JSON will decode nested dynamic columns at a nesting level of not more than 10 levels deep. Easy ingestion of JSON data If you are working with systems and devices that provide data formatted as JSON (e. Example: Creating tables to store JSON data. From what I've read, if you have reason to believe you'll need to view. This is done by using window. Sometimes, you'll want to store an entire JSON object in the database for history purposes. NET objects into their JSON equivalent and back again by mapping the. A demo of the HTML5 download attribute. as ('usersData') Omit the fixture file’s extension. File data is supplied in the second chunk and can be of any supported MIME type. Storing JSON in the Oracle database. So I'm afraid it isn't doable to firstly copy json into blob then use the lookup and foreach activity to flattern the "recommendation_params" and finally copy into different files. BI it shows me. New-Now supports JSONLines. Learn more about them, how they work, when and why you should use JWTs. This article covers ten JSON examples you can use in your. , the goal of which was to demystify JSON and make it feel as approachable as a spreadsheet. fixture ('users. io", "basePath": "/v1. A typical document is:. Making JSON more approachable. com/package/rn-fetch. They have the added advantage of being able to index the columns otherwise hidden in the blob. Triggering a file download. The json_extract function takes the column containing the JSON string, and searches it using a JSONPath-like expression with the dot. The methods and attributes of type objects are rarely used directly. JSON file data source example. A Git blob (binary large object) is the object type used to store the contents of each file in a repository. Using existing data types means all database functionality, such as highavailability, replication, compression, encryption etc. You can also export JSON or XML data to Azure Blob using same techniques (Use Export JSON Task or Export XML Task ). A bash script which demonstrates parsing a JSON string to extract a property value. I would suspect that JSON would have to be able to support such an idea and maybe the App as well. VARCHAR should be used for text with relatively short average size (for example shorter than 200 characters). Using Visual Studio, you can get auto-completion if you import the schema in your. Deserializes a JSON string. Problems may arise when using the RETURNING NUMBER clause of the JSON_VALUE()-function. com · 12 Comments I used to spend considerably more time begging and, sometimes, badgering government agencies for data. Use a JSON validator like jsonlint. Uploading a JSON Feed into Azure Blob Storage using an ASP. But, if you want to post the data as a regular "form post," you can; all you have to do is override the default request transformation. It shows your JSON side by side in a clear, editable tree-view and in formatted plain text. NET, JavaScript, and C++. So you really have to put in this hack and do a “as ‘json'” in order for this to work. Learn more about them, how they work, when and why you should use JWTs. You can use SObject Basic Information, SObject Rows, or SObject Collections REST resources to insert or update blob data in Salesforce standard objects. Most logs begin with a preamble, such as a timestamp, then the json blob. From this example, the JSON_VAL function in the SELECT clause applies on the VALUE column of JSON_TABLE output. Once those are in place we'll then import a single JSON Document, filling the ten tables with the data of 70,000 fake records from it. com to validate your JSON. For example, the following query extracts from a JSON document the value of the member with the name key:. 1) In computers, a BLOB (binary large object), pronounced BLAHB and sometimes spelled in all lower case, is a large file, typically an image or sound file, that must be handled (for example, uploaded, downloaded, or stored in a database) in a special way because of its size. There is a lot of variety in the syntax of the JSON functionality, which for simplicity is avoided here. Star 0 Fork 4 Code Revisions 1 Forks 4. A demo of the HTML5 download attribute. You can rate examples to help us improve the quality of examples. It's the de facto standard for document exchange. Dynamics NAV – Import and Export JSON data using XMLPorts If you require send and receive data from and to Dynamics NAV using Web services, here’s a solution that converts XMLPorts into JSON strings or viceversa, for exporting and importing data. It shows your JSON side by side in a clear, editable tree-view and in formatted plain text. A JSON path expression selects a value within a JSON document. This sample deserializes JSON retrieved from a file. This domain is established to be used for illustrative examples in documents. The file's SHA-1 hash is computed and stored in the blob object. For examples, a GUI wallet, an web applications allowing for accessing wallet balance online, and block explorer. If the process seems to block JS thread when file is large when reading data via fs. JSON conversion examples. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. Indexer definition for single JSON blobs. Take a look in the test/ folder for more * detailed examples. Enabling HTML forms to submit JSON directly simplifies implementation as it enables backend services to operate by accepting a single input format that is what's more able to encode richer structure than other form encodings (where structure has traditional had. See the Example for sample code showing how to build the HTTP request. You can also export JSON or XML data to Azure Blob using same techniques (Use Export JSON Task or Export XML Task ). Estimated reading time: 4 minutes. JSON is text, and we can convert any JavaScript object into JSON, and send JSON to the server. A few weeks ago, I gave a workshop at Open Data Day here in D. For more details, please review the following blog and similar thread. stringify(data) can be used to serialize a data structure into a JSON string. The new Facet & Analytics Module exposed via the JSON Facet API is a rewrite of Solr’s previous faceting capabilities, with the following goals: First class native JSON API to control faceting and analytics. Today, we are happy to announce general availability for JSON parsing with Azure Search’s Blob Storage indexer. Luckily the templating language has a build-in function called @JSON() which will do all the parsing magic for you. sql file from the JSON folder. Using Visual Studio, you can get auto-completion if you import the schema in your. For example if address of student is in line# 5 in one clob , it might be at line# 250 for next clob. Precision, if any, should be specified in characters, CHARACTERS and OCTETS units have no effect in H2. The argument for putting them under this page is that taxonomies are usually added in the editor itself, and only managed on the archive pages. Job Example 16: Extract BLOB/CLOB/JSON Data and Write It to an External File Job Objective Extract rows that include BLOB/CLOB/JSON data from a Teradata Database table and write them to an external flat file. See the Git Database API for more details. Work with JSON files with Azure SQL. They are extracted from open source Python projects. Storing JSON in BLOB columns. Search Google; About Google; Privacy; Terms. From Wikipedia: "JSON or JavaScript Object Notation, is an open standard format that uses human-readable text to transmit data objects consisting of attribute–value pairs. camel cased names starting with lower case --- "sampleFieldNameInJava") to a Json field name (i. I was under the (FALSE!) impression that it was not possible to put an IS JSON check constraint on a BLOB column, simply because I tried once and got an exception. Welcome to the online JSON Viewer, JSON Formatter and JSON Beautifier at codebeautiy. A demo of the HTML5 download attribute. Run the scripts in this file to reformat some existing data as JSON data, test sample queries and reports over the JSON data, index the JSON data. This sample deserializes JSON to an object. JSON Blob is a service that helps parallelize client/server development. How do I read the JSON file. 'Create file' creates a. 85 will produce the showed output. In this post you'll learn how to:. Note As of now, commentjson supports only standard library’s json module. I used an "Execute stored procedure" action to get the JSON, then used the "Body" dynamic value from that as the Content in the Parse JSON action. This demonstrates how to store your files such as images, videos, docs or any binary data off device in the cloud using Windows Azure Blob Storage. Summary: in this tutorial, we will show you how to work with PostgreSQL JSON data type. Get BLOB image from mysql database via JSON I have an image stored as BLOB in my MySQL database. End of 2012 it moved back to the WHATWG. JSON does, however, lack indexing — and the JSONB data format was created to tackle this problem. When no extension is passed to cy. JSON functionalities in Azure SQL Database can help you in different scenarios. The newer System. In our fetch request example (run fetch request live), we create a new request using the Request. Angular file upload Demo Visit ng-file-upload on github + edit upload html reset to default. sample_field_name_in_java or SampleFieldNameInJava). In this posting you learn how to: Store JSON data in the Oracle Database Pick a good data type for your JSON data Identify rows and columns that contain JSON. I am trying to download a. Here is an example of a JSON document:. BI it shows me. Get unlimited access to the best stories on Medium — and support writers while you’re at it. Parsing JSON data – @Json() There will be times when you have to deal with JSON data returned as text. The entire objects will be retrieved. Use only application/json or application xml. This is a comparison of data-serialization formats, various ways to convert complex objects to sequences of bits. The nature of populating JSON data into that CLOB field is dynamic. Here are some simple examples of resources, from the resources section of my Azure JSON document, and in it, you can see where I am using the variables function to call for variables defined up above, in the variables section. A BLOB is a binary large object that can hold a variable amount of data. In order to publish new releases from this fork, we have renamed this project to rn-fetch-blob and published to https://www. This example deserializes the object to a Dictionary that is defined as having a string for a key, and a string for the value. Using binary data with REST. Path expressions are useful with functions that extract parts of or modify a JSON document, to specify where within that document to operate. Jackson maven dependency 2. json(xml(triggerBody())) Using a different source/destination. Azure Search has long supported indexers for a variety of data sources on Azure: Document DB, Azure SQL Database, Tables, and Blobs. JSONLint is a validator and reformatter for JSON, a lightweight data-interchange format. js Source : Stack. A frequent need is to force the “string” version of a type, that is the one rendered in a CREATE TABLE statement or other SQL function like CAST, to be changed. Following link will elaborate in detail. JSON Blob is a web-based tool to create, edit, view, format, and share JSON. In the lower half of the publishing dialog, you can see a link to your data - but it only gives us HTML (try to change output from "html" to "json" - it doesn't work). Though, this is a trivial example and actual object could be more complex, it demonstrate the process of creating Java object from JSON String. Here's an example, from the Twitter project, but very similar to the one in the documentation mentioned above. So I'm afraid it isn't doable to firstly copy json into blob then use the lookup and foreach activity to flattern the "recommendation_params" and finally copy into different files. Chilkat Python Downloads Python Module for Windows, Linux, Alpine Linux,. You can vote up the examples you like or vote down the ones you don't like. Example 9-1 is a partial example of this. Dynamics NAV – Import and Export JSON data using XMLPorts If you require send and receive data from and to Dynamics NAV using Web services, here’s a solution that converts XMLPorts into JSON strings or viceversa, for exporting and importing data. PHP MySQL BLOB examples. BSON [bee · sahn], short for Bin­ary JSON, is a bin­ary-en­coded seri­al­iz­a­tion of JSON-like doc­u­ments. The json1 extension is a loadable extension that implements fifteen application-defined SQL functions and two table-valued functions that are useful for managing JSON content stored in an SQLite database. Today, we are happy to announce general availability for JSON parsing with Azure Search’s Blob Storage indexer. I've tried to remove empty "Documents" array property from Json payload when it's empty, but had same result. Postgres has a JSON field, and you could just as easily use that with an indexed key. The term "blob" actually stands for "Binary Large Object" and is used for storing information in databases. Learn how to use it by getting your hands dirty with a JSON blob that represents the open issues in the public Docker GitHub repository. asList(mapper.