Examples with ExternalDatasetIndexesRecoverOperatorDescriptor org.apache.asterix.external.operators.ExternalDatasetIndexesRecoverOperatorDescriptor used on opensource projects

Example 1 with ExternalDatasetIndexesRecoverOperatorDescriptor

use of org.apache.asterix.external.operators.ExternalDatasetIndexesRecoverOperatorDescriptor in project asterixdb by apache.

the class ExternalIndexingOperations method buildRecoverOp.

public static JobSpecification buildRecoverOp(Dataset ds, List<Index> indexes, MetadataProvider metadataProvider) throws AlgebricksException {
    JobSpecification spec = RuntimeUtils.createJobSpecification(metadataProvider.getApplicationContext());
    IStorageManager storageMgr = metadataProvider.getStorageComponentProvider().getStorageManager();
    ArrayList<IIndexDataflowHelperFactory> treeDataflowHelperFactories = new ArrayList<>();
    AlgebricksPartitionConstraint constraints = null;
    for (Index index : indexes) {
        IFileSplitProvider indexSplitProvider;
        if (isValidIndexName(index.getDatasetName(), index.getIndexName())) {
            Pair<IFileSplitProvider, AlgebricksPartitionConstraint> sAndConstraints = metadataProvider.getSplitProviderAndConstraints(ds, index.getIndexName());
            indexSplitProvider = sAndConstraints.first;
            constraints = sAndConstraints.second;
        } else {
            indexSplitProvider = metadataProvider.getSplitProviderAndConstraints(ds, IndexingConstants.getFilesIndexName(ds.getDatasetName())).first;
        }
        IIndexDataflowHelperFactory indexDataflowHelperFactory = new IndexDataflowHelperFactory(storageMgr, indexSplitProvider);
        treeDataflowHelperFactories.add(indexDataflowHelperFactory);
    }
    ExternalDatasetIndexesRecoverOperatorDescriptor op = new ExternalDatasetIndexesRecoverOperatorDescriptor(spec, treeDataflowHelperFactories);
    spec.addRoot(op);
    AlgebricksPartitionConstraintHelper.setPartitionConstraintInJobSpec(spec, op, constraints);
    spec.setConnectorPolicyAssignmentPolicy(new ConnectorPolicyAssignmentPolicy());
    return spec;
}