phantom-dsl

How do you create a table in Cassandra using phantom for Scala?

由 允我心安 提交于 2021-01-28 18:11:12
问题 I am trying to run the example on https://github.com/websudos/phantom/blob/develop/phantom-example/src/main/scala/com/websudos/phantom/example/basics/SimpleRecipes.scala ,So I created a Recipe and tried to insert it using insertNewRecord(myRecipe) and got the following exception: ....InvalidQueryException: unconfigured columnfamily my_custom_table . I checked using cqlsh and the keyspace was created but the table was not. So my question is, how do I create the table using phantom? This is

play 2.3.8 sbt excluding logback

由 时光毁灭记忆、已成空白 提交于 2020-01-14 08:18:10
问题 I'm having a really hard time excluding logback from my play 2.3.8 test run. I've tried many exclude rules, but nothing seems to work. I also can't find it in my dependency tree. Snippet from my sbt file: [...] resolvers ++= Seq( "Typesafe repository snapshots" at "http://repo.typesafe.com/typesafe/snapshots/", "Typesafe repository releases" at "http://repo.typesafe.com/typesafe/releases/", "Sonatype repo" at "https://oss.sonatype.org/content/groups/scala-tools/", "Sonatype releases" at

play 2.3.8 sbt excluding logback

由 空扰寡人 提交于 2020-01-14 08:17:35
问题 I'm having a really hard time excluding logback from my play 2.3.8 test run. I've tried many exclude rules, but nothing seems to work. I also can't find it in my dependency tree. Snippet from my sbt file: [...] resolvers ++= Seq( "Typesafe repository snapshots" at "http://repo.typesafe.com/typesafe/snapshots/", "Typesafe repository releases" at "http://repo.typesafe.com/typesafe/releases/", "Sonatype repo" at "https://oss.sonatype.org/content/groups/scala-tools/", "Sonatype releases" at

How to increment Cassandra Counter Column with phantom-dsl?

由 丶灬走出姿态 提交于 2019-12-23 03:03:43
问题 Are there any examples of implementing the counter operation within phantom-dsl? Have checked: http://outworkers.com/blog/post/a-series-on-cassandra-part-3-advanced-features https://github.com/outworkers/phantom/wiki/Counter-columns https://github.com/outworkers/phantom/blob/develop/phantom-dsl/src/test/scala/com/websudos/phantom/tables/CounterTableTest.scala Kinda looking for a phantom-dsl version of this info: https://github.com/Netflix/astyanax/wiki/Working-with-counter-columns The

How risky is it to call Await.result on db calls

由 喜夏-厌秋 提交于 2019-12-20 03:18:01
问题 When using phantom how dangerous is it to be following this pattern in db calls: Await.result(dbOperationFut, 30.seconds) This isn't really phantom specific but it is the scala driver being used. I am weary of this pattern because of the potential GC pause that might last for over x seconds. How many seconds is safe given GC pauses? I am personally in favor of using for-comp and not blocking like this, but just want to know if this is a REALLY bad practice or it is fine. Context : This would

Phantom-DSL cassandra with frozen type

由 夙愿已清 提交于 2019-12-13 06:59:56
问题 I'm trying to map a column which is a Map with frozen type My column family has a field batsmen_data map<text, frozen<bat_card>> bat_card has two fields bat_id int, bat_name text, Map the column field object batsmenData extends MapColumn[ScoreCardData, ScoreCard, String ,Batting](this) { override lazy val name="batsmen_data" } This is not an ideal way to do it. Because MapColumn Supports only primitive types. Can any one help me out on how to create a UDT Columns 回答1: I've figured out a way

Creating Model for Cassandra using Phantom DSL

由 青春壹個敷衍的年華 提交于 2019-12-13 04:57:19
问题 I am reading this piece of source code. This looks good but what if instead of artist, the field was "artists" where artists was an list<text> in cassandra? I found this article which talks about using ListColumn https://github.com/websudos/phantom/wiki/Collection-columns but I am not sure how will you define index on the ListColumn object genre extends ListColumn(this) with Index[List[String]] The line above does not compile. 回答1: As far as I'm aware you can only do contains queries with

Partial inserts with Cassandra and Phantom DSL

由 旧巷老猫 提交于 2019-12-12 03:47:37
问题 I'm building a simple Scala Play app which stores data in a Cassandra DB using the Phantom DSL driver for Scala. One of the nice features of Cassandra is that you can do partial updates i.e. so long as you provide the key columns, you do not have to provide values for all the other columns in the table. Cassandra will merge the data into your existing record based on the key. Unfortunately, it seems this doesn't work with Phantom DSL. I have a table with several columns, and I want to be able

Cassandra Timeouts with No CPU Usage

由 狂风中的少年 提交于 2019-12-10 10:15:18
问题 I am getting Cassandra timeouts using the Phantom-DSL with the Datastax Cassandra driver. However, Cassandra does not seem to be overloaded. Below is the exception I get: com.datastax.driver.core.exceptions.OperationTimedOutException: [node-0.cassandra.dev/10.0.1.137:9042] Timed out waiting for server response at com.datastax.driver.core.RequestHandler$SpeculativeExecution.onTimeout(RequestHandler.java:766) at com.datastax.driver.core.Connection$ResponseHandler$1.run(Connection.java:1267) at

Cassandra Timeouts with No CPU Usage

由 回眸只為那壹抹淺笑 提交于 2019-12-06 00:47:33
I am getting Cassandra timeouts using the Phantom-DSL with the Datastax Cassandra driver. However, Cassandra does not seem to be overloaded. Below is the exception I get: com.datastax.driver.core.exceptions.OperationTimedOutException: [node-0.cassandra.dev/10.0.1.137:9042] Timed out waiting for server response at com.datastax.driver.core.RequestHandler$SpeculativeExecution.onTimeout(RequestHandler.java:766) at com.datastax.driver.core.Connection$ResponseHandler$1.run(Connection.java:1267) at io.netty.util.HashedWheelTimer$HashedWheelTimeout.expire(HashedWheelTimer.java:588) at io.netty.util
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