zakgof / velvetdb Goto Github PK

Velvetdb backend not registered: xodus is the error

private static IVelvetEnvironment createEnv() {
try {
PATH = Files.createTempDirectory("velvet").toString();
new File(PATH).mkdirs();
IVelvetEnvironment env = VelvetFactory
.openCaching("velvetdb://xodus/" + PATH.replace(File.separatorChar, '/'));
return env;
} catch (Exception e) {
e.printStackTrace();
System.exit(-1);
return null;
}

}
IVelvetEnvironment env = createEnv();

trigger
com.zakgof.db.velvet.VelvetException: Velvetdb backend not registered: xodus
at com.zakgof.db.velvet.VelvetFactory.lambda$open$1(VelvetFactory.java:42)
at java.base/java.util.Optional.orElseThrow(Optional.java:403)
at com.zakgof.db.velvet.VelvetFactory.open(VelvetFactory.java:42)

i tested xodus as well with all the correct dependencies and it work .
try (Environment env = Environments.newInstance("/./me/.myAppData")) {
env.executeInTransaction(txn -> {
final Store store = env.openStore("Messages", StoreConfig.WITHOUT_DUPLICATES, txn);
store.put(txn, StringBinding.stringToEntry("Hello"), StringBinding.stringToEntry("World!"));
});
}
May you help?

regards
david

Hello

just wanted to tell you that i really like the design philosophy and i will use this framwork
Bravo for this great job.
cheers,
david

Hi. I downloaded velvet-db, built it with Gradle 4.2 and then used eclipse plugin buildship to create eclipse proejcts.

In Eclipse i am trying to run velvetdb-core PutGetTest.java and it's failing in VelvetTxnRule because VelvetTestSuite.velvetProvider is null. How do i initialize velvetProvider so i can run individual junit test classes such as PutGetTest.java? Thanks.

Caused by: java.lang.IllegalStateException: Duplicate key com.zakgof.db.velvet.dynamodb.DynamoDBVelvet$Store$StoreIndex@611dba71 at java.util.stream.Collectors.lambda$throwingMerger$0(Collectors.java:133) at java.util.HashMap.merge(HashMap.java:1253) at java.util.stream.Collectors.lambda$toMap$58(Collectors.java:1320) at java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169) at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1374) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) at com.zakgof.db.velvet.dynamodb.DynamoDBVelvet$Store.<init>(DynamoDBVelvet.java:411) at com.zakgof.db.velvet.dynamodb.DynamoDBVelvet$SortedStore.<init>(DynamoDBVelvet.java:634) at com.zakgof.db.velvet.dynamodb.DynamoDBVelvet.sortedStoreWithProxy(DynamoDBVelvet.java:342) at com.zakgof.db.velvet.impl.cache.CachingVelvet$CachedSortedStore.<init>(CachingVelvet.java:154) at com.zakgof.db.velvet.impl.cache.CachingVelvet.sortedStore(CachingVelvet.java:40) at com.zakgof.db.velvet.impl.entity.SortedEntityDef.store(SortedEntityDef.java:23) at com.zakgof.db.velvet.impl.entity.SortedEntityDef.store(SortedEntityDef.java:15) at com.zakgof.db.velvet.impl.entity.EntityDef.queryKeys(EntityDef.java:174) at com.zakgof.db.velvet.impl.entity.EntityDef.queryList(EntityDef.java:162)

<dependency>
            <groupId>com.github.zakgof</groupId>
            <artifactId>velvetdb-mapdb</artifactId>
            <version>0.7.0</version>
</dependency>

Not found in maven central (per instructions on README)

velvetdb-xodus and velvetdb-dynamodb are found.

https://mvnrepository.com/artifact/com.github.zakgof/velvetdb-mapdb