How do you setup spring data neo4j username password with #Bean annotations? Do you use the ogm configuration class? Most sites say to just use standard spring properties in application.properties, however this is doesn’t allow for proper encryption mechanisms. It’s been challenging to find a good tutorial which has the #Bean configuration for spring data neo4j.
I am wondering if I need to set up session factory and entity manager as well in #Bean configurations or does spring data neo4j take care of that?
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We want to try GraphQL in our Spring based application. (its not based on spring boot). Our data repository is MongoDB. I saw various examples based on node, which makes use of graphQL + Mongo. There is also library which is with spring boot!
Can it be used directly? Or there is non spring-boot lib available?
The main thing you'd gain from Spring Boot is auto configuration for Spring Data's Mongo driver.
If you're comfortable injecting the MongoRepository into the GraphQL data sources and resolves on your own, then no, you don't need Spring Boot
I am trying to connect to Cassandra from my Spring boot application using spring-boot-data-cassandra.I have two doubts.
1) Is it recommended to use the CassandraAutoConfiguration i.e. by providing all Cassandra configurations in application.properties with prefix(spring.data.cassandra.*) so that my app will create a cluster for me or do I need to manually create cluster bean, because in CassandraAutoConfiguration cluster bean is annotated with #ConditionalOnMissingBeanso which one is more preferred to use spring cassandra auto configuration or manually creating a cluster bean.
2) My cluster is enabled with ssl at Cassandra side. So when I am auto configuring Cassandra connections with ssl enabled (by setting spring.data.cassandra.ssl=true) then Default SSL context is created for me, but i need to provide my truststore path and truststore password to initialize SSLContext. There is no properties provided at data-cassandra like the one provided for kafka(spring.kafka.ssl.truststore-location= # Location of the trust store file.
spring.kafka.ssl.truststore-password= # Store password for the trust store file.), so is there any way to provide truststore file location and password to AutoConfigure my Cassandra configuration or to override default SSLContext created.
Please help me and correct me if my understanding is wrong. Thanks.
Updates:
https://github.com/spring-projects/spring-boot/issues/8476
Using Spring Boot's Auto-Configuration is the preferred approach but Boot goes out of your way if you need to apply a more specific configuration. Most conditional beans are created if there's no other provided #Bean.
If you provide Cluster yourself, then Spring Boot's Auto-Configuration will not provide a second Cluster bean.
The preferred approach since Spring Boot 1.5, if you need a more specific configuration, is providing a ClusterBuilderCustomizer bean that gets called to customize Cluster.Builder to your needs.
You might also want to file an issue in Spring Boot's issue tracker. Specific SSL configuration is a common configuration use-case.
I've followed this tutorial through Spring's docs. It's nice, but I can not find anything online (and current) that shows how to connect to an existing DataSource through JDBC using Spring. Where can I configure this connection? This tutorial only shows how to create one (but where exactly is it even doing that?).
From your how-to link, you can see:
Spring Boot spots H2, an in-memory relational database engine,
and automatically creates a connection. Because we are using
spring-jdbc, Spring Boot automatically creates a JdbcTemplate.
The #Autowired JdbcTemplate field automatically loads it and
makes it available.
You can bypass the default DataSource by adding #EnableAutoConfiguration(exclude={DataSourceAutoConfiguration.class}) to your Application class. This link provides more detail on setting up a DataSource in Spring Boot.
...and the other sections are pretty useful too!
You are using Spring boot which contains embedded databases, in this case H2 database (check line "Spring Boot spots H2, an in-memory relational database engine, and automatically creates a connection.")
To provide custom connection and configure DataSource see this section https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-sql.html
The presence of a second datasource in a spring boot application is failing caching with the exception:
java.lang.IllegalArgumentException: Cannot find cache named 'entity-name' for CacheEvictOperation
With one datasource it's working.
Both the datasource is auto-configured by spring boot.
Datasource one using mysql, declared as primary
Datasource two using mongodb
Is this a known case? Do I need to explicitly configure entity and transaction managers?
Spring Boot does not support auto-configuring more than one datasources for general purposes so you may want to revisit your configuration (or the description).
Yes, you need to configure the entity manager and transaction managers explicitly when you need to use more than one datasource.
Hopefully, this sample shows you how to do it.
I am working on some new custom distributed objects to run in Hazelcast SPI.
As can be seen in : http://docs.hazelcast.org/docs/latest/manual/html/spiaddproperties.html you can enable via the Hazelcast xml config, or of course, you can enable programmatically.
It appears that the spring hazelcast xml schema does not support SPI creation, and I would like to create/enable and inject spring beans as properties to the new service.
Can anyone advise if this is possible? I want to utilize spring to instantiate the hazelcast instance as this is the most robust way I've found to do so in a large application.
I think it is supported.
You can find an example here: https://github.com/hazelcast/hazelcast/blob/master/hazelcast-spring/src/test/resources/com/hazelcast/spring/fullcacheconfig-applicationContext-hazelcast.xml#L309