How to use

getDataverse

method

in

org.apache.asterix.metadata.api.IMetadataManager

public Dataverse findDataverse(String dataverseName) throws AlgebricksException {
  return MetadataManager.INSTANCE.getDataverse(mdTxnCtx, dataverseName);
}

protected MetadataTransactionContext doRecovery(ICcApplicationContext appCtx, MetadataTransactionContext mdTxnCtx)
    throws Exception {
  // Loop over datasets
  for (Dataverse dataverse : MetadataManager.INSTANCE.getDataverses(mdTxnCtx)) {
    mdTxnCtx = recoverDatasets(appCtx, mdTxnCtx, dataverse);
    // Fixes ASTERIXDB-2386 by caching the dataverse during recovery
    MetadataManager.INSTANCE.getDataverse(mdTxnCtx, dataverse.getDataverseName());
  }
  return mdTxnCtx;
}

Dataverse dv = MetadataManager.INSTANCE.getDataverse(mdTxnCtx, dataverse);
if (dv == null) {
  return false;

List<JobSpecification> jobsToExecute = new ArrayList<>();
try {
  Dataverse dv = MetadataManager.INSTANCE.getDataverse(mdTxnCtx, dataverseName);
  if (dv == null) {
    if (stmtDelete.getIfExists()) {

Dataverse dv = MetadataManager.INSTANCE.getDataverse(mdTxnCtx, dataverse);
if (dv == null) {
  MetadataManager.INSTANCE.addDataverse(mdTxnCtx, new Dataverse(dataverse,

protected Dataverse handleUseDataverseStatement(MetadataProvider metadataProvider, Statement stmt)
    throws Exception {
  DataverseDecl dvd = (DataverseDecl) stmt;
  SourceLocation sourceLoc = dvd.getSourceLocation();
  String dvName = dvd.getDataverseName().getValue();
  MetadataTransactionContext mdTxnCtx = MetadataManager.INSTANCE.beginTransaction();
  metadataProvider.setMetadataTxnContext(mdTxnCtx);
  lockManager.acquireDataverseReadLock(metadataProvider.getLocks(), dvName);
  try {
    Dataverse dv = MetadataManager.INSTANCE.getDataverse(metadataProvider.getMetadataTxnContext(), dvName);
    if (dv == null) {
      throw new MetadataException(ErrorCode.UNKNOWN_DATAVERSE, sourceLoc, dvName);
    }
    MetadataManager.INSTANCE.commitTransaction(mdTxnCtx);
    return dv;
  } catch (Exception e) {
    abort(e, e, mdTxnCtx);
    throw new MetadataException(ErrorCode.METADATA_ERROR, e, sourceLoc, e.toString());
  } finally {
    metadataProvider.getLocks().unlock();
  }
}

@SuppressWarnings("squid:S00112")
protected boolean doCreateDataverseStatement(MetadataTransactionContext mdTxnCtx, MetadataProvider metadataProvider,
    CreateDataverseStatement stmtCreateDataverse) throws Exception {
  String dvName = stmtCreateDataverse.getDataverseName().getValue();
  Dataverse dv = MetadataManager.INSTANCE.getDataverse(metadataProvider.getMetadataTxnContext(), dvName);
  if (dv != null) {
    if (stmtCreateDataverse.getIfNotExists()) {
      MetadataManager.INSTANCE.commitTransaction(mdTxnCtx);
      return false;
    } else {
      throw new CompilationException(ErrorCode.DATAVERSE_EXISTS, stmtCreateDataverse.getSourceLocation(),
          dvName);
    }
  }
  MetadataManager.INSTANCE.addDataverse(metadataProvider.getMetadataTxnContext(),
      new Dataverse(dvName, stmtCreateDataverse.getFormat(), MetadataUtil.PENDING_NO_OP));
  MetadataManager.INSTANCE.commitTransaction(mdTxnCtx);
  return true;
}

    MetadataManager.INSTANCE.getDataverse(metadataProvider.getMetadataTxnContext(), dataverseName);
jobsToExecute.add(DatasetUtil.compactDatasetJobSpec(dataverse, datasetName, metadataProvider));

    dataverseName + "." + typeName);
try {
  Dataverse dv = MetadataManager.INSTANCE.getDataverse(mdTxnCtx, dataverseName);
  if (dv == null) {
    throw new CompilationException(ErrorCode.UNKNOWN_DATAVERSE, sourceLoc, dataverseName);

    dataverse + "." + signature.getName());
try {
  Dataverse dv = MetadataManager.INSTANCE.getDataverse(mdTxnCtx, dataverse);
  if (dv == null) {
    throw new CompilationException(ErrorCode.UNKNOWN_DATAVERSE, sourceLoc, dataverse);