Examples with SqlDescribeSchema org.apache.drill.exec.planner.sql.parser.SqlDescribeSchema used on opensource projects

Example 1 with SqlDescribeSchema

use of org.apache.drill.exec.planner.sql.parser.SqlDescribeSchema in project drill by apache.

the class DescribeSchemaHandler method getPlan.

@Override
public PhysicalPlan getPlan(SqlNode sqlNode) {
    SqlIdentifier schema = ((SqlDescribeSchema) sqlNode).getSchema();
    SchemaPlus drillSchema = SchemaUtilites.findSchema(config.getConverter().getDefaultSchema(), schema.names);
    if (drillSchema != null) {
        StoragePlugin storagePlugin;
        try {
            storagePlugin = context.getStorage().getPlugin(schema.names.get(0));
        } catch (ExecutionSetupException e) {
            throw new DrillRuntimeException("Failure while retrieving storage plugin", e);
        }
        String properties;
        try {
            final Map configMap = mapper.convertValue(storagePlugin.getConfig(), Map.class);
            if (storagePlugin instanceof FileSystemPlugin) {
                transformWorkspaces(schema.names, configMap);
            }
            properties = mapper.writeValueAsString(configMap);
        } catch (JsonProcessingException e) {
            throw new DrillRuntimeException("Error while trying to convert storage config to json string", e);
        }
        return DirectPlan.createDirectPlan(context, new DescribeSchemaResult(Joiner.on(".").join(schema.names), properties));
    }
    throw UserException.validationError().message(String.format("Invalid schema name [%s]", Joiner.on(".").join(schema.names))).build(logger);
}