Examples with ITransactionSubsystemProvider org.apache.asterix.common.context.ITransactionSubsystemProvider used on opensource projects

Example 1 with ITransactionSubsystemProvider

use of org.apache.asterix.common.context.ITransactionSubsystemProvider in project asterixdb by apache.

the class DatasetUtil method createPrimaryIndexScanOp.

/**
     * Creates a primary index scan operator for a given dataset.
     *
     * @param spec,
     *            the job specification.
     * @param metadataProvider,
     *            the metadata provider.
     * @param dataset,
     *            the dataset to scan.
     * @param jobId,
     *            the AsterixDB job id for transaction management.
     * @return a primary index scan operator.
     * @throws AlgebricksException
     */
public static IOperatorDescriptor createPrimaryIndexScanOp(JobSpecification spec, MetadataProvider metadataProvider, Dataset dataset, JobId jobId) throws AlgebricksException {
    Pair<IFileSplitProvider, AlgebricksPartitionConstraint> primarySplitsAndConstraint = metadataProvider.getSplitProviderAndConstraints(dataset);
    IFileSplitProvider primaryFileSplitProvider = primarySplitsAndConstraint.first;
    AlgebricksPartitionConstraint primaryPartitionConstraint = primarySplitsAndConstraint.second;
    // -Infinity
    int[] lowKeyFields = null;
    // +Infinity
    int[] highKeyFields = null;
    ITransactionSubsystemProvider txnSubsystemProvider = TransactionSubsystemProvider.INSTANCE;
    boolean temp = dataset.getDatasetDetails().isTemp();
    ISearchOperationCallbackFactory searchCallbackFactory = temp ? NoOpOperationCallbackFactory.INSTANCE : new PrimaryIndexInstantSearchOperationCallbackFactory(jobId, dataset.getDatasetId(), dataset.getPrimaryBloomFilterFields(), txnSubsystemProvider, IRecoveryManager.ResourceType.LSM_BTREE);
    IndexDataflowHelperFactory indexHelperFactory = new IndexDataflowHelperFactory(metadataProvider.getStorageComponentProvider().getStorageManager(), primaryFileSplitProvider);
    BTreeSearchOperatorDescriptor primarySearchOp = new BTreeSearchOperatorDescriptor(spec, dataset.getPrimaryRecordDescriptor(metadataProvider), lowKeyFields, highKeyFields, true, true, indexHelperFactory, false, false, null, searchCallbackFactory, null, null, false);
    AlgebricksPartitionConstraintHelper.setPartitionConstraintInJobSpec(spec, primarySearchOp, primaryPartitionConstraint);
    return primarySearchOp;
}