Spring Expression Language (SpEL) is a powerful expression language that supports querying and manipulating an object graph at runtime.
This tutorial shows various examples of ways to use SpEL expressions with XML and annotation based configuration. We also know how to evaluate an expression using SpEL classes and interfaces.
[Continue reading…] “Spring Expression Language SpEL”
@Resource Annotation is used to indicate a reference to a resource, it is considered an alternative to @Autowired which is an Spring standard. Similar to Java EE 5, we can use @Resource Annotation with field injection or setter method.
This tutorial will cover those kinds of injection which will be used for matching by Name, Type or Qualifier.
[Continue reading…] “@Resource Annotation in Spring”
Callable is a Java interface that is an useful methodology for control multi-threading returns on concurrency development.
The tutorial will guide you to build a concurrency program with ThreadPoolTaskExecutor of Spring Framework and Callable interface.
[Continue reading…] “Spring ThreadPoolTaskExecutor with Callable interface for concurrency programming”
Docker is a new revolution for Linux container and it is a powerful tool for MicroService development.
The tutorial will guild you how to build a Spring Boot application and deploy it with Docker container.
[Continue reading…] “Spring Boot with Docker Container”
For scaling a Batch Job, Parallel Steps is one solution that bases on the business logic of application. We split the logic business in distinct responsibilities, and each step can be executed in parallelized flow. The tutorial will guide you how to configure parallel steps with Spring Batch.
– Spring Batch Partition for Scaling & Parallel Processing
– How to start with Spring Batch using Spring Boot – Java Config
[Continue reading…] “Spring Batch Job with Parallel Steps”
In application development, sometimes we should make different configuration for each environment. Spring Profiles provides a way to separate application configuration into some parts and they are only available in one or more specific environments.
This tutorial introduces ways to use Spring Profiles by @Profile Annotation or XML Configuration.
[Continue reading…] “Spring Profiles – @Profile Annotation and XML Configuration”
Neo4j is a highly scalable, native graph database. Spring Data supports Spring Neo4J for Graph Database: annotated POJOs, SD-Repositories and Neo4j-Template.
Tutorial will guides you how to work with Spring Neo4j.
[Continue reading…] “Spring Neo4J”
@Value Annotations vs Environment vs @ConfigurationProperties.
Spring provides some ways to inject properties from properties file. We have learned how to use them in 3 articles:
– @Value Annotation
This tutorial helps you have a comparison view covering those solutions.
[Continue reading…] “Inject Properties using @Value Annotations vs Environment vs @ConfigurationProperties”
This tutorial will show you the better way to handle properties using @ConfigurationProperties Annotation.
In previous article, we have learned about using @Value annotation to inject properties from properties file. This approach has disadvantage that if we wanna change any property, we have to update all files which referenced it.
[Continue reading…] “Inject Properties from Properties File using @ConfigurationProperties Annotation”
Spring XD Option Module is an approach to expose metadata of each module for configuration. The tutorial will guide you how to configure PostgreSQL Datasource with Spring XD Annotation: @ModuleOption.
– Spring XD Stream – PostgreSQL JDBC Sink
– Spring XD Batch Job – How to Start
[Continue reading…] “Spring XD Option Module – Batch Job with PostgreSQL Datasource”
This tutorial shows you the way to inject Properties from Properties File using @Value Annotation with Java Configuration and @PropertySource.
You will also know how to use SourcesPlaceHolder and ConversionService for specific cases including: List/Arrays, special types (DateTime, Pattern), when a value that should be treated as null or a placeholder fails to resolve.
[Continue reading…] “Inject Properties from Properties File using @Value Annotation”
annotation-config and component-scan are important basic concepts of Spring Core.
This tutorial helps you understand how to use them and difference between them.
[Continue reading…] “Difference between annotation-config and component-scan”
Spring Batch is a powerful module to implement a batch process for tons of data conveniently.
This tutorial guide you how to import CSV Data to PostgreSQL Database using Spring Batch Job.
– How to start with Spring Batch using Spring Boot
– How to use Spring JDBC Template for Postgres Database
[Continue reading…] “How to import CSV data to PostgreSQL Database using Spring Batch Job”
Spring XD JDBC sink can be used to insert message payload data into a relational database table. The tutorial will introduce you how to work with PostgreSQL JDBC Sink
Related Article: Spring XD Stream – How to start with Stream
[Continue reading…] “Spring XD Stream – PostgreSQL JDBC Sink”
Spring XD stream is a big data solution for how to ingestion. Each Stream is defined by 3 kinds of module: Source, Sink & Processor.
The tutorial will introduce Spring XD Stream.
Relate Post: Spring XD Batch Job – How to Start
[Continue reading…] “Spring XD Stream – How to start with Stream”