Examples with Records org.apache.drill.exec.store.ischema.Records used on opensource projects

Example 1 with Records

use of org.apache.drill.exec.store.ischema.Records in project drill by apache.

the class ShowFilesHandler method getPlan.

@Override
public PhysicalPlan getPlan(SqlNode sqlNode) throws ForemanSetupException {
    SchemaPlus defaultSchema = config.getConverter().getDefaultSchema();
    SchemaPlus drillSchema = defaultSchema;
    SqlShowFiles showFiles = unwrap(sqlNode, SqlShowFiles.class);
    SqlIdentifier from = showFiles.getDb();
    String fromDir = null;
    // Show files can be used without from clause, in which case we display the files in the default schema
    if (from != null) {
        // We are not sure if the full from clause is just the schema or includes table name,
        // first try to see if the full path specified is a schema
        drillSchema = SchemaUtilites.findSchema(defaultSchema, from.names);
        if (drillSchema == null) {
            // Entire from clause is not a schema, try to obtain the schema without the last part of the specified clause.
            drillSchema = SchemaUtilites.findSchema(defaultSchema, from.names.subList(0, from.names.size() - 1));
            // Listing for specific directory: show files in dfs.tmp.specific_directory
            fromDir = from.names.get((from.names.size() - 1));
        }
        if (drillSchema == null) {
            throw UserException.validationError().message("Invalid FROM/IN clause [%s]", from.toString()).build(logger);
        }
    }
    WorkspaceSchema wsSchema;
    try {
        wsSchema = (WorkspaceSchema) drillSchema.unwrap(AbstractSchema.class).getDefaultSchema();
    } catch (ClassCastException e) {
        throw UserException.validationError().message("SHOW FILES is supported in workspace type schema only. Schema [%s] is not a workspace schema.", SchemaUtilites.getSchemaPath(drillSchema)).build(logger);
    }
    Path endPath = fromDir == null ? new Path(wsSchema.getDefaultLocation()) : new Path(wsSchema.getDefaultLocation(), fromDir);
    // add URI to the path to ensure that directory objects are skipped (see S3AFileSystem.listStatus method)
    Path path = new Path(wsSchema.getFS().getUri().toString(), endPath);
    List<ShowFilesCommandResult> records = FileSystemUtil.listAllSafe(wsSchema.getFS(), path, false).stream().map(fileStatus -> new ShowFilesCommandResult(new Records.File(wsSchema.getFullSchemaName(), wsSchema, fileStatus))).collect(Collectors.toList());
    return DirectPlan.createDirectPlan(context.getCurrentEndpoint(), records, ShowFilesCommandResult.class);
}