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Articles on Trending Technologies
Technical articles with clear explanations and examples
How to deserialize a JSON string using @JsonCreator annotation in Java?
The @JsonProperty annotation can be used to indicate the property name in JSON. This annotation can be used for a constructor or factory method. The @JsonCreator annotation is useful in situations where the @JsonSetter annotation cannot be used. For instance, immutable objects do not have any setter methods, so they need their initial values injected into the constructor.@JsonProperty - ConstructorExampleimport com.fasterxml.jackson.annotation.*; import java.io.IOException; import com.fasterxml.jackson.databind.*; public class JsonCreatorTest1 { public static void main(String[] args) throws IOException { ObjectMapper om = new ObjectMapper(); String jsonString = ...
Read MoreCan we create multiple database in SAP HANA system?
In SAP HANA, you don’t have a concept of creating multiple databases in one container. To create a separate container for your database objects, you can create the schema in HANA db.To create a schema, you can use below SQL query −CREATE SCHEMA schema nameYou can also define as owner name while defining a schema.CREATE SCHEMA [OWNED BY ]If it is not defined, the system takes the current user as the owner of the schema.
Read MoreUse of SPATIAL function in SAP HANA
In SAP HANA, geospatial data types are not defined as such and you need to use scalar values like a.ST_X().You can create a table like this −CREATE COLUMN TABLE MYSCHEMA.SpatialShapes_GEOMETRIES ( ShapeID integer, SHAPE1 ST_Point, SHAPE2 ST_GEOMETRY );SAP provides a complete guide to handle Geospatial data in applications. You can refer this link for more details:https://help.sap.com/doc/PRODUCTION/9db42d044f8e415180d4a4475873b50a/2.0.00/en-US/SAP_HANA_Spatial_Reference_en.pdf
Read MoreHow to check modules, functions, and tables in SAP ERP system.
For searching within RFC modules, you can use the transaction BAPI (Business Application Programming Interface) for searching modules. The advantage of this approach is that they are completely documented and available on SAP website with sample usage examples. Also, SAP provides support for the same and in case you are stuck somewhere, SAP support will be a good hand for guidance.Also, you can use transaction SE80, SE84 to query for modules, programs. Search using this supports the search for names, id, and descriptions.You can also use RS_ABAP_SOURCE_SCAN for searching across ABAP programs. It works fine with sub-system search but for ...
Read MoreWhat is the difference between jQuery.load() and jQuery.ajax() methods in jQuery?
jQuery ajax() methodThe jQuery.ajax( options ) method loads a remote page using an HTTP request. $.ajax() returns the XMLHttpRequest that it creates. In most cases you won't need that object to manipulate directly, but it is available if you need to abort the request manually.Here is the description of all the parameters used by this method −options − A set of key/value pairs that configure the Ajax request. All options are optional.Assuming we have the following HTML content in result.html file −THIS IS RESULT...ExampleThe following is an example showing the usage of this method. Here, we make use of success handler to ...
Read MoreHow to define alternate names to a field using Jackson in Java?
The @JsonAlias annotation can define one or more alternate names for the attributes accepted during the deserialization, setting the JSON data to a Java object. But when serializing, i.e. getting JSON from a Java object, only the actual logical property name is used instead of the alias.Syntax@Target(value={ANNOTATION_TYPE, FIELD, METHOD, PARAMETER}) @Retention(value=RUNTIME) public @interface JsonAliasExampleimport com.fasterxml.jackson.annotation.*; import com.fasterxml.jackson.core.*; import com.fasterxml.jackson.databind.*; import java.io.*; public class ObjectToJsonTest { public static void main(String[] args) throws JsonProcessingException { ObjectMapper mapper = new ObjectMapper(); Technology tech = new Technology("Java", "Oracle"); ...
Read MoreWhat is the difference between jQuery.post() and jQuery.get() methods in jQuery?
jQuery post() methodThe jQuery.post( url, [data], [callback], [type] ) method loads a page from the server using a POST HTTP request.Assuming we have following PHP content in result.php file, ExampleThe following is the code snippet showing the usage of this method − $(document).ready(function() { ...
Read MoreHow to Find out the source code of a transaction in SAP?
First, go to System → Status to find the program name. Now use the transaction SE38 or SE80 to view the source code.Alternatively, you can activate the debugging mode before running your transaction by keying in /h.
Read MoreWhat is the use of Custom Extractor in SAP R/3 system?
In order to extract data from tables, you need to follow steps:Create a View of the required table from where the data needs to be extracted or view over multiple joined tablesNavigate to Transaction SE11 and Select option 'View'. It will ask for a name, name it something like 'View_TableName'.Select which all the fields of the tables needs to be extracted and click on activateGo to Transaction RS02 and create a transaction extractor and name it something like 'Trans_TableName'Specify the position of the created extractor in the component hierarchy.If you want to provide descriptions, add it. Specify the view name ...
Read MoreJShell in Java 9?
JShell is a new concept introduced in Java 9 version. It provides Java with REPL (Read-Eval-Print-Loop) ability. By using JShell, we can test the java-based logic and expressions without compiling it. REPL acts as an immediate feedback loop and has a great effect on productivity in that particular language.Step 1: Open Command Prompt and type JShell.Microsoft Windows [Version 6.3.9600] (c) 2013 Microsoft Corporation. All rights reserved. C:\Users\User>JShell | Welcome to JShell -- Version 9.0.4 | For an introduction type: /help intro jshell>Step 2: Type /help (to view JShell commands) in the JShell command window once it starts running.jshell> /help | Type ...
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