Environment Setup of Spring Data in Grails Project
Posted By : Prabjot Singh | 30-Dec-2014
Here, I will discuss how to setup of spring data neo4j in grails project. So, before start to setup, we need to understands some basic things about spring data neo4j, which I will use in project.
Spring Data Neo4j Annotations
-
@NodeEntity = it is used to define our domain class
-
@GraphId = it is used to define node or relationship id
-
@GraphProperty = it is used to define properties of node or relationship class. It is optional,so we can omit this.
##Configuration##
1) Add dependency injection for spring data neo4j in BuildConfig.groovy
compile "org.springframework.data:spring-data-neo4j:3.2.0.RELEASE"
2) we have to do spring data neo4j configuration in resources.groovy. The configuration -)
beans = {
xmlns neo4j:"http://www.springframework.org/schema/data/neo4j"
xmlns context:"http://www.springframework.org/schema/context"
context.'component-scan'('base-package': 'neo4j')
neo4j.'repositories'('base-package':'neo4jRepository')
neo4j.'config'('storeDirectory':'target/db5', 'base-package':'neo4j')
}
</beans>
3) There are some configuration elements,you have to focus
a) neo4j:repositories-> it should be path of your repositories
b) storeDirectory -> it should be your database path
c) component-> it should be a path of your entity classes
4) Create a domain class using spring data neo4j annotation(@NodeEntity)
@NodeEntity
class Person {
@GraphId Long graphId;
String name;
}
5) Create a repository. according to spring data neo4j,name of repository should be like as name of your domain class and should be extend graphRepository
public interface PersonRepository extends GraphRepository<Person>{
}
6) To save the person entity, use repository's save method
def personRepository
def savePerson(){
Person person=new Person()
person.name="John"
personRepository.save(person)
}
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About Author
Prabjot Singh
Prabjot is a Java and Grails developer.He has a good hands on neo4J, AngularJS. He likes to work on new technologies