spring-data-cassandra | Provides support to increase developer productivity
kandi X-RAY | spring-data-cassandra Summary
kandi X-RAY | spring-data-cassandra Summary
Provides support to increase developer productivity in Java when using Apache Cassandra. Uses familiar Spring concepts such as a template classes for core API usage and lightweight repository style data access.
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Top functions reviewed by kandi - BETA
- Invokes the delegate method on the delegate
- Convert a list of arguments to a statement
- Start observation
- Create a proxy for an observation
- Parses the entity into an EntityMapping object
- Parse property mapping
- Converts a CriteriaDefinition to a CQL condition
- Transforms an array of objects into literals
- Compares two properties
- Compares two primary key columns
- Gets the sort for the specified sort
- Generate low cardinality key values
- Map class to data type
- Returns the mapped constructor
- Converts the given map into a map
- Returns a map of Cassandra
- Binds the given SimpleStatement to a prepared statement
- Map a row of column values to a map of String values
- Creates a Cassandra session factory
- Verifies that the given entity is an interface
- Returns all of the BeanDefinitionHolder instances of the given type
- Verifies that the given entity is valid
- Extracts the values of the current row
- Generate the CQL statement
- Gets the converters to be registered
- Handles event
spring-data-cassandra Key Features
spring-data-cassandra Examples and Code Snippets
Community Discussions
Trending Discussions on spring-data-cassandra
QUESTION
I'm doing some research bout spring-data-cassandra-reactive and it looks like I can't figure out or find the right documentation about this.
According to the documentation you can create an interface which is annotated with @Repository and then use annotations to create custom queries that will retrieve the data you want. The code would look something like this:
ANSWER
Answered 2022-Apr-07 at 11:51SimpleReactiveCassandraRepository is a great class as it gives you access to ReactiveCassandraOperations and as such to CqlSession. It is a great way to have fine grained operations. (LWT, Bacthes)
You are correct the different classes would be autowired. Here is a sample code:
QUESTION
Small question regarding a Spring Webflux Reactive Cassandra application please.
On a setup Spring Boot 2.6.4 with Webflux and reactive Cassandra, I am using the app to insert some data in Cassandra tables.
Things works fine, until when there is a higher load, I am seeing an issue (stack trace attached)
The thing is, reading some documentation, I thought this piece of code would help solve the issue:
...ANSWER
Answered 2022-Mar-05 at 23:29You have configured the wrong option on the driver. METADATA_SCHEMA_REQUEST_TIMEOUT is the timeout for the requests to retrieve the schema.
The default request timeout for the Java driver is basic.request.timeout (see reference configuration):
QUESTION
I was following this guide https://www.baeldung.com/spring-data-cassandra-tutorial to try and get started with using Cassandra paired with spring boot, however, the Cassandra connector dependency:
...ANSWER
Answered 2022-Feb-23 at 17:56My first approach would be going to:
C:\Users\X.m2\repository\com\google\code\findbugs\jsr305\3.0.2
and delete:
jsr305-3.0.2.jar
and then run a maven clean install or your goal
Sometimes the jars are downloaded corrupted
QUESTION
As you can see, I have a simple default test. For some unknown reason for me, it does not load the application context, if I remove @SpringBootTest annotation everything works, but without it I cannot do bean injection, so I need this annotation.
test
...ANSWER
Answered 2022-Jan-07 at 10:36It seems that you have flyway dependency in your pom. When using @SpringbootTest, It will initialize the whole application context. According to the Springboot Autoconfigure mechanism, the application detects the Flyway module and tries to create a bean named flyway:
Error creating bean with name 'flyway'
And then when constructing the flyway bean, the flyway Factory needs a datasource bean.
QUESTION
Issue:
nextPageStateString is being passed to the client and during the next request its is converted back to Bytebuffer
below line
feedRepository.findAll(cassandraPageRequest); is throwing exception
I was just converting the serializing and deserializing the PageState, not sure why its complaining as I didn't modified the PagingState object.
Questions:
Am i doing the correctly serializing and deserializing the the byte buffer? if not what are other ways of doing it.
...ANSWER
Answered 2021-Dec-06 at 04:57Calling bytes.position(0); before CassandraPageRequest.of(pageRequest, bytes); has resolved the issue.
QUESTION
I'm using a hibernate in the spring boot to call the method findByIdField(UUID id) in Cassandra 3.11 to return a list and this erro bellow appear in the console log.
I have a entity, repository and service with this simple method. I'm passing a UUID as parameter and I check the ID in the database and it exist.
Controller :
...ANSWER
Answered 2021-Sep-09 at 15:29While the error message indicates a NPE (null pointer exception), I think that's masking the root problem here. However, the error message displayed when removing ALLOW FILTERING:
QUESTION
I am using Spring Boot 2.4.4 and Spring Data Cassandra dependency to connect to the Cassandra database. During the application startup, I am getting a DriverTimeout error (I am using VPN).
I have gone through all the Stack Overflow questions similar to this and none of them worked for me. I have cross-posted the same question on the Spring Boot official page here.
I used below configuration properties below -
...ANSWER
Answered 2021-Apr-23 at 08:35The DriverTimeoutException gets thrown when the driver doesn't get a reply from the coordinator node. It uses the basic request timeout default of 2 seconds:
QUESTION
While trying to update a project using spring-boot-starter-data-cassandra from Spring Boot 2.4.6 to 2.5.0, I run into a problem of my @Column annotations being ignored.
Using the following annotation
...ANSWER
Answered 2021-May-25 at 15:38Ok, the issue seems to be with having the members of Bar already declared in the constructor. I.e., replacing this
QUESTION
When starting my application the keyspace is always created and possibly one or two tables before the PT2S error message . Somehow the spring.data.cassandra.request.timeout property is not honored, or maybe there is something wrong with my configuration? The "DriverConfigLoaderBuilderCustomizer" bean does not make any difference.
pom.xml
...ANSWER
Answered 2020-Dec-11 at 21:59We had a similar problem and tried your exact steps first. The driver examples code than stirred us in the right direction. We have a custom cassandra config with excluded auto config:
QUESTION
the local DC must be explicitly set (see basic.load-balancing-policy.local-datacenter in the config, or set it programmatically with SessionBuilder.withLocalDatacenter)
Running single node cluster on localhost.
Able to query cassandra keyspace using cqlsh.
Running Cassandra Version: 3.11.8
Using Spring Boot Version: 2.3.4
cassandra.yaml configuration file untouched since downloading latest cassandra version
Cassandra Configuration
...ANSWER
Answered 2020-Nov-01 at 05:48Contact-points need to be pointing to an ip address. Remove cluster-name from the config.
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