Package 'ResultModelManager'

Title: Result Model Manager
Description: Database data model management utilities for R packages in the Observational Health Data Sciences and Informatics programme. 'ResultModelManager' provides utility functions to allow package maintainers to migrate existing SQL database models, export and import results in consistent patterns.
Authors: Jamie Gilbert [aut, cre]
Maintainer: Jamie Gilbert <[email protected]>
License: Apache License (== 2.0)
Version: 0.6.2
Built: 2026-05-24 07:25:26 UTC
Source: https://github.com/ohdsi/resultmodelmanager

Help Index

ConnectionHandler

Description

Class for handling DatabaseConnector:connection objects with consistent R6 interfaces for pooled and non-pooled connections. Allows a connection to cleanly be opened and closed and stored within class/object variables

Value

DatabaseConnector Connection instance close Connection

boolean TRUE if connection is valid close Connection

boolean TRUE if connection is valid executeSql

Public fields

connectionDetails

DatabaseConnector connectionDetails object

con

DatabaseConnector connection object

isActive

Is connection active or not#'

snakeCaseToCamelCase

(Optional) Boolean. return the results columns in camel case (default)

Methods

Public methods

Method new()

Usage
ConnectionHandler$new(
  connectionDetails,
  loadConnection = TRUE,
  snakeCaseToCamelCase = TRUE
)
Arguments
connectionDetails

DatabaseConnector::connectionDetails class

loadConnection

Boolean option to load connection right away

snakeCaseToCamelCase

(Optional) Boolean. return the results columns in camel case (default) get dbms

Method dbms()

Get the dbms type of the connection get table

Usage
ConnectionHandler$dbms()

Method tbl()

get a dplyr table object (i.e. lazy loaded)

Usage
ConnectionHandler$tbl(table, databaseSchema = NULL)
Arguments
table

table name

databaseSchema

databaseSchema to which table belongs Render Translate Sql.

Method renderTranslateSql()

Masked call to SqlRender

Usage
ConnectionHandler$renderTranslateSql(sql, ...)
Arguments
sql

Sql query string

...

Elipsis initConnection

Method initConnection()

Load connection Get Connection

Usage
ConnectionHandler$initConnection()

Method getConnection()

Returns connection for use with standard DatabaseConnector calls. Connects automatically if it isn't yet loaded

Usage
ConnectionHandler$getConnection()

Method closeConnection()

Closes connection (if active) db Is Valid

Usage
ConnectionHandler$closeConnection()

Method dbIsValid()

Masks call to DBI::dbIsValid. Returns False if connection is NULL

Usage
ConnectionHandler$dbIsValid()

Method finalize()

Closes connection (if active) queryDb

Usage
ConnectionHandler$finalize()

Method queryDb()

query database and return the resulting data.frame

If environment variable LIMIT_ROW_COUNT is set Returned rows are limited to this value (no default) Limit row count is intended for web applications that may cause a denial of service if they consume too many resources.

Usage
ConnectionHandler$queryDb(
  sql,
  snakeCaseToCamelCase = self$snakeCaseToCamelCase,
  overrideRowLimit = FALSE,
  ...
)
Arguments
sql

sql query string

snakeCaseToCamelCase

(Optional) Boolean. return the results columns in camel case (default)

overrideRowLimit

(Optional) Boolean. In some cases, where row limit is enforced on the system You may wish to ignore it.

...

Additional query parameters

Method executeSql()

execute set of database queries

Usage
ConnectionHandler$executeSql(sql, ...)
Arguments
sql

sql query string

...

Additional query parameters query Function

Method queryFunction()

queryFunction that can be overriden with subclasses (e.g. use different base function or intercept query) Does not translate or render sql.

Usage
ConnectionHandler$queryFunction(
  sql,
  snakeCaseToCamelCase = self$snakeCaseToCamelCase,
  connection = self$getConnection()
)
Arguments
sql

sql query string

snakeCaseToCamelCase

(Optional) Boolean. return the results columns in camel case (default)

connection

(Optional) connection object execute Function

Method executeFunction()

exec query Function that can be overriden with subclasses (e.g. use different base function or intercept query) Does not translate or render sql.

Usage
ConnectionHandler$executeFunction(sql, connection = self$getConnection())
Arguments
sql

sql query string

connection

connection object

Method clone()

The objects of this class are cloneable with this method.

Usage
ConnectionHandler$clone(deep = FALSE)
Arguments
deep

Whether to make a deep clone.

Create query namespace

Description

Create a QueryNamespace instance from either a connection handler or a connectionDetails object Allows construction with various options not handled by QueryNamespace$new

Note - currently not supported is having multiple table prefixes for multiple table namespaces

Usage

createQueryNamespace(
  connectionDetails = NULL,
  connectionHandler = NULL,
  usePooledConnection = FALSE,
  tableSpecification = NULL,
  resultModelSpecificationPath = NULL,
  tablePrefix = "",
  snakeCaseToCamelCase = TRUE,
  ...
)

Arguments

connectionDetails

An object of type connectionDetails as created using the createConnectionDetails function in the DatabaseConnector package.
connectionHandler

ResultModelManager ConnectionHandler or PooledConnectionHandler instance
usePooledConnection

Use Pooled database connection instead of standard DatabaseConnector single connection.
tableSpecification

Table specfication data.frame
resultModelSpecificationPath

(optional) csv file or files for tableSpecifications - must conform to table spec format.
tablePrefix

String to prefix table names with - default is empty string
snakeCaseToCamelCase

convert snakecase results to camelCase field names (TRUE by default)
...

Elipsis - use for any additional string keys to replace

Create Result Export Manager

Description

For a give table specification file, create an export manager instance for creating results data sets that conform to the data model.

This checks that, at export time, internal validity is assured for the data (e.g. primary keys are valid, data types are compatible

In addition this utility will create a manifest object that can be used to maintain the validity of data.

If an instance of a DataMigrationManager is present and available a packageVersion reference (where applicable) and migration set will be referenced. Allowing data to be imported into a database schema at a specific version.

Usage

createResultExportManager(
  tableSpecification,
  exportDir,
  minCellCount = getOption("ohdsi.minCellCount", default = 5),
  databaseId = NULL
)

Arguments

tableSpecification

Table specification data.frame
exportDir

Directory files are being exported to
minCellCount

Minimum cell count - reccomended that you set with options("ohdsi.minCellCount" = count) in all R projects. Default is 5
databaseId

database identifier - required when exporting according to many specs

DataMigrationManager (DMM)

Description

R6 class for management of database migration

Value

data frame all migrations, including file name, order and execution status Get connection handler

Public fields

migrationPath

Path migrations exist in

databaseSchema

Path migrations exist in

packageName

packageName, can be null

tablePrefix

tablePrefix, can be empty character vector

packageTablePrefix

packageTablePrefix, can be empty character vector

Methods

Public methods

Method new()

Usage
DataMigrationManager$new(
  connectionDetails,
  databaseSchema,
  tablePrefix = "",
  packageTablePrefix = "",
  migrationPath,
  packageName = NULL,
  migrationRegexp = .defaultMigrationRegexp
)
Arguments
connectionDetails

DatabaseConnector connection details object

databaseSchema

Database Schema to execute on

tablePrefix

Optional table prefix for all tables (e.g. plp, cm, cd etc)

packageTablePrefix

A table prefix when used in conjunction with other package results schema, e.g. "cd_", "sccs_", "plp_", "cm_"

migrationPath

Path to location of migration sql files. If in package mode, this should just be a folder (e.g. "migrations") that lives in the location "sql/sql_server" (and) other database platforms. If in folder model, the folder must include "sql_server" in the relative path, (e.g if migrationPath = 'migrations' then the folder 'migrations/sql_server' should exists)

packageName

If in package mode, the name of the R package

migrationRegexp

(Optional) regular expression pattern default is ⁠(Migration_([0-9]+))-(.+).sql⁠ Migration table exists

Method migrationTableExists()

Check if migration table is present in schema

Usage
DataMigrationManager$migrationTableExists()
Returns

boolean Get path of migrations

Method getMigrationsPath()

Get path to sql migration files

Usage
DataMigrationManager$getMigrationsPath(dbms = "sql server")
Arguments
dbms

Optionally specify the dbms that the migration fits under Get status of result model

Method getStatus()

Get status of all migrations (executed or not)

Usage
DataMigrationManager$getStatus()

Method getConnectionHandler()

Return connection handler instance

Usage
DataMigrationManager$getConnectionHandler()
Returns

ConnectionHandler instance Check migrations in folder

Method check()

Check if file names are valid for migrations Execute Migrations

Usage
DataMigrationManager$check()

Method executeMigrations()

Execute any unexecuted migrations

Usage
DataMigrationManager$executeMigrations(stopMigrationVersion = NULL)
Arguments
stopMigrationVersion

(Optional) Migrate to a specific migration number closeConnection

Method closeConnection()

close connection, if active isPackage

Usage
DataMigrationManager$closeConnection()

Method isPackage()

is a package folder structure or not finalize

Usage
DataMigrationManager$isPackage()

Method finalize()

Deprecated call, will be removed in a future version

Usage
DataMigrationManager$finalize()

Method clone()

The objects of this class are cloneable with this method.

Usage
DataMigrationManager$clone(deep = FALSE)
Arguments
deep

Whether to make a deep clone.

See Also

ConnectionHandler for information on returned class

Delete all rows for database id

Description

Delete all rows for database id

Usage

deleteAllRowsForDatabaseId(
  connection,
  schema,
  tableName,
  databaseId,
  idIsInt = TRUE
)

Arguments

connection

DatabaseConnector connection instance
schema

The schema on the postgres server where the results table exists
tableName

Database table name
databaseId

Results source database identifier
idIsInt

Identified is a numeric type? If not character is used

Details

Only PostgreSQL servers are supported.

Delete results rows for primary key values from database server tables

Description

Delete results rows for primary key values from database server tables

Usage

deleteAllRowsForPrimaryKey(connection, schema, tableName, keyValues)

Arguments

connection

DatabaseConnector connection instance
schema

The schema on the postgres server where the results table exists
tableName

Database table name
keyValues

Key values of results rows to be deleted

Details

Only PostgreSQL servers are supported.

Disable python uploads

Description

This will stop the use of python in uploaResults - not that this will only work for this R session. If you have set RMM_USE_PYTHON_UPLOADS in your .Renviron this will reset the next time you start your R session.

Usage

disablePythonUploads()

Enable Python Postgres Uploads

Description

Step by step install to enable python uploads

Usage

enablePythonUploads(...)

Arguments

...

parameters to pass to py_install

Schema generator

Description

Take a csv schema definition and create a basic sql script with it. returns string containing the sql for the table

Usage

generateSqlSchema(
  csvFilepath = NULL,
  schemaDefinition = NULL,
  sqlOutputPath = NULL,
  overwrite = FALSE
)

Arguments

csvFilepath

Path to schema file. Csv file must have the columns: "table_name", "column_name", "data_type", "primary_key"
schemaDefinition

A schemaDefintiion data.frame' with the columns: tableName, columnName, dataType, isRequired, primaryKey
sqlOutputPath

File to write sql to.
overwrite

Boolean - overwrite existing file?

Grant Table Permissions

Description

Grant a given permission for all tables on a given tableSpecification

Very useful if you're hosting studies on data.ohdsi.org or other postgresql instances

NOTE: only tested on postgresql, users' of other platforms may have Sql translation issues

Usage

grantTablePermissions(
  connectionDetails = NULL,
  connection = NULL,
  tableSpecification,
  databaseSchema,
  tablePrefix = "",
  permissions = "SELECT",
  user
)

Arguments

connectionDetails

An object of type connectionDetails as created using the createConnectionDetails function in the DatabaseConnector package.
connection

DatabaseConnector connection instance
tableSpecification

data.frame conforming to table spec (must contain tableName field)
databaseSchema

database schema to run this on
tablePrefix

String to prefix table names with - default is empty string
permissions

permissions to generate must be one of SELECT, INSERT, DELETE or UPDATE
user

database user to grant permissions to

install psycopg2

Description

Install psycopg2-binary python package into the specified python virtualenv

Usage

install_psycopg2(
  envname = Sys.getenv("RMM_PYTHON_ENV", unset = "rmm-uploads"),
  method = "auto",
  ...
)

Arguments

envname

python virtual environment name. Can be set with system environment variable "RMM_PYTHON_ENV", default is rmm-uploads
method

method paramter for reticulate::py_install (defualt is auto)
...

Extra parameters for reticulate::py_install

Get specifications from a given file path

Description

Get specifications from a given file path

Usage

loadResultsDataModelSpecifications(filePath)

Arguments

filePath

path to a valid csv file

Value

A tibble data frame object with specifications

Pooled Connection Handler

Description

Transparently works the same way as a standard connection handler but stores pooled connections. Useful for long running applications that serve multiple concurrent requests. Note that a side effect of using this is that each call to this increments the .GlobalEnv attribute RMMPooledHandlerCount

Value

boolean TRUE if connection is valid executeSql

Super class

ResultModelManager::ConnectionHandler -> PooledConnectionHandler

Methods

Public methods

Inherited methods

Method new()

Usage
PooledConnectionHandler$new(
  connectionDetails = NULL,
  snakeCaseToCamelCase = TRUE,
  loadConnection = TRUE,
  dbConnectArgs = NULL,
  forceJdbcConnection = TRUE
)
Arguments
connectionDetails

DatabaseConnector::connectionDetails class

snakeCaseToCamelCase

(Optional) Boolean. return the results columns in camel case (default)

loadConnection

Boolean option to load connection right away

dbConnectArgs

Optional arguments to call pool::dbPool overrides default usage of connectionDetails

forceJdbcConnection

Force JDBC connection (requires using DatabaseConnector ConnectionDetails) initialize pooled db connection

Method initConnection()

Overrides ConnectionHandler Call Used for getting a checked out connection from a given environment (if one exists)

Usage
PooledConnectionHandler$initConnection()

Method getCheckedOutConnectionPath()

Usage
PooledConnectionHandler$getCheckedOutConnectionPath()
Arguments
.deferedFrame

defaults to the parent frame of the calling block. Get Connection

Method getConnection()

Returns a connection from the pool When the desired frame exits, the connection will be returned to the pool As a side effect, the connection is stored as an attribute within the calling frame (e.g. the same function) to prevent multiple connections being spawned, which limits performance.

If you call this somewhere you need to think about returning the object or you may create a connection that is never returned to the pool.

Usage
PooledConnectionHandler$getConnection(.deferedFrame = parent.frame(n = 2))
Arguments
.deferedFrame

defaults to the parent frame of the calling block. get dbms

Method dbms()

Get the dbms type of the connection Close Connection

Usage
PooledConnectionHandler$dbms()

Method closeConnection()

Overrides ConnectionHandler Call - closes all active connections called with getConnection queryDb

Usage
PooledConnectionHandler$closeConnection()

Method queryDb()

query database and return the resulting data.frame

If environment variable LIMIT_ROW_COUNT is set Returned rows are limited to this value (no default) Limit row count is intended for web applications that may cause a denial of service if they consume too many resources.

Usage
PooledConnectionHandler$queryDb(
  sql,
  snakeCaseToCamelCase = self$snakeCaseToCamelCase,
  overrideRowLimit = FALSE,
  ...
)
Arguments
sql

sql query string

snakeCaseToCamelCase

(Optional) Boolean. return the results columns in camel case (default)

overrideRowLimit

(Optional) Boolean. In some cases, where row limit is enforced on the system You may wish to ignore it.

...

Additional query parameters

Method executeSql()

execute set of database queries

Usage
PooledConnectionHandler$executeSql(sql, ...)
Arguments
sql

sql query string

...

Additional query parameters query Function

Method queryFunction()

Overrides ConnectionHandler Call. Does not translate or render sql.

Usage
PooledConnectionHandler$queryFunction(
  sql,
  snakeCaseToCamelCase = self$snakeCaseToCamelCase,
  connection
)
Arguments
sql

sql query string

snakeCaseToCamelCase

(Optional) Boolean. return the results columns in camel case (default) query Function

connection

db connection assumes pooling is handled outside of call

Method executeFunction()

Overrides ConnectionHandler Call. Does not translate or render sql.

Usage
PooledConnectionHandler$executeFunction(sql, connection)
Arguments
sql

sql query string

connection

DatabaseConnector connection. Assumes pooling is handled outside of call

Method clone()

The objects of this class are cloneable with this method.

Usage
PooledConnectionHandler$clone(deep = FALSE)
Arguments
deep

Whether to make a deep clone.

are python postgresql uploads enabled?

Description

are python postgresql uploads enabled?

Usage

pyPgUploadEnabled()

Py Upload CSV

Description

Wrapper to python function to upload a csv using Postgres Copy functionality

Usage

pyUploadCsv(connection, table, filepath, schema, disableConstraints = FALSE)

Arguments

connection

DatabaseConnector connection instance
table

Table in database
filepath

path to csv
schema

database schema containing table reference
disableConstraints

(not reccomended) disable constraints prior to upload to speed up process

Examples

## Not run: 
connection <- DabaseConnector::connect(
  dbms = "postgreql",
  server = "myserver.com",
  port = 5432,
  password = "s",
  user = "me",
  database = "some_db"
)
ResultModelManager::pyUploadCsv(connection,
  table = "my_table",
  filepath = "my_massive_csv.csv",
  schema = "my_schema"
)

## End(Not run)

Py Upload data.frame

Description

Wrapper to python function to upload a data.frame using Postgres Copy functionality

Usage

pyUploadDataFrame(data, connection, table, schema)

Arguments

data

data.frame
connection

DatabaseConnector connection instance
table

Table in database
schema

database schema containing table reference

Examples

## Not run: 
connection <- DabaseConnector::connect(
  dbms = "postgreql",
  server = "myserver.com",
  port = 5432,
  password = "s",
  user = "me",
  database = "some_db"
)

ResultModelManager::pyUploadDataFrame(connection,
  table = "my_table",
  data.frame(id = 1:100, value = "some_value"),
  schema = "my_schema"
)

## End(Not run)

QueryNamespace

Description

Given a results specification and ConnectionHandler instance - this class allow queries to be namespaced within any tables specified within a list of pre-determined tables. This allows the encapsulation of queries, using specific table names in a consistent manner that is striaghtforward to maintain over time.

Public fields

tablePrefix

tablePrefix to use

Methods

Public methods

Method new()

initialize class

Usage
QueryNamespace$new(
  connectionHandler = NULL,
  tableSpecification = NULL,
  tablePrefix = "",
  ...
)
Arguments
connectionHandler

ConnectionHandler instance @seealsoConnectionHandler

tableSpecification

tableSpecification data.frame

tablePrefix

constant string to prefix all tables with

...

additional replacement variables e.g. database_schema, vocabulary_schema etc Set Connection Handler

Method setConnectionHandler()

set connection handler object for object

Usage
QueryNamespace$setConnectionHandler(connectionHandler)
Arguments
connectionHandler

ConnectionHandler instance Get connection handler

Method getConnectionHandler()

get connection handler obeject or throw error if not set

Usage
QueryNamespace$getConnectionHandler()

Method addReplacementVariable()

add a variable to automatically be replaced in query strings (e.g. @database_schema.@table_name becomes 'database_schema.table_1')

Usage
QueryNamespace$addReplacementVariable(key, value, replace = FALSE)
Arguments
key

variable name string (without @) to be replaced, eg. "table_name"

value

atomic value for replacement

replace

if a variable of the same key is found, overwrite it add table specification

Method addTableSpecification()

add a variable to automatically be replaced in query strings (e.g. @database_schema.@table_name becomes 'database_schema.table_1')

Usage
QueryNamespace$addTableSpecification(
  tableSpecification,
  useTablePrefix = TRUE,
  tablePrefix = self$tablePrefix,
  replace = TRUE
)
Arguments
tableSpecification

table specification data.frame conforming to column names tableName, columnName, dataType and primaryKey

useTablePrefix

prefix the results with the tablePrefix (TRUE)

tablePrefix

prefix string - defaults to class variable set during initialization

replace

replace existing variables of the same name Render

Method render()

Call to SqlRender::render replacing names stored in this class

Usage
QueryNamespace$render(sql, ...)
Arguments
sql

query string

...

additional variables to be passed to SqlRender::render - will overwrite anything in namespace query Sql

Method queryDb()

Call to

Usage
QueryNamespace$queryDb(sql, ...)
Arguments
sql

query string

...

additional variables to send to SqlRender::render execute Sql

Method executeSql()

Call to execute sql within namespaced queries

Usage
QueryNamespace$executeSql(sql, ...)
Arguments
sql

query string

...

additional variables to send to SqlRender::render get vars

Method getVars()

returns full list of variables that will be replaced closeConnection

Usage
QueryNamespace$getVars()

Method closeConnection()

close connection, if active

Usage
QueryNamespace$closeConnection()

Method clone()

The objects of this class are cloneable with this method.

Usage
QueryNamespace$clone(deep = FALSE)
Arguments
deep

Whether to make a deep clone.

Examples

library(ResultModelManager)

# Create some junk test data
connectionDetails <-
  DatabaseConnector::createConnectionDetails(
    server = "test_db.sqlite",
    dbms = "sqlite"
  )

conn <- DatabaseConnector::connect(connectionDetails)
DatabaseConnector::insertTable(
  connection = conn,
  tableName = "cd_cohort",
  data = data.frame(
    cohort_id = c(1, 2, 3),
    cohort_name = c("cohort one", "cohort two", "cohort three"),
    json = "{}",
    sql = "SELECT 1"
  )
)
DatabaseConnector::disconnect(conn)

connectionHandler <- ConnectionHandler$new(connectionDetails = connectionDetails)
tableSpecification <- data.frame(
  tableName = "cohort",
  columnName = c(
    "cohort_id",
    "cohort_name",
    "json",
    "sql"
  ),
  primaryKey = c(TRUE, FALSE, FALSE, FALSE),
  dataType = c("int", "varchar", "varchar", "varchar")
)

cohortNamespace <- QueryNamespace$new(
  connectionHandler = connectionHandler,
  tableSpecification = tableSpecification,
  result_schema = "main",
  tablePrefix = "cd_"
)
sql <- "SELECT * FROM @result_schema.@cohort WHERE cohort_id = @cohort_id"
# Returns : "SELECT * FROM main.cd_cohort WHERE cohort_id = @cohort_id"
print(cohortNamespace$render(sql))
# Returns query result
result <- cohortNamespace$queryDb(sql, cohort_id = 1)
# cleanup test data
unlink("test_db.sqlite")

Result Set Export Manager

Description

EXPERIMENTAL - this feature is still in design stage and it is not reccomended that you implement this for your package at this stage. Utility for simplifying export of results to files from sql queries

Note that this utility is not strictly thread safe though seperate processes can export separate tables without issue. When exporting a the same table across multiple threads primary key checks may create issues.

Public fields

exportDir

direcotry path to export files to Init

Methods

Public methods

Method new()

Create a class for exporting results from a study in a standard, consistend manner

Usage
ResultExportManager$new(
  tableSpecification,
  exportDir,
  minCellCount = getOption("ohdsi.minCellCount", default = 5),
  validateTypes = FALSE,
  usePrimaryKeyCheck = FALSE,
  databaseId = NULL
)
Arguments
tableSpecification

Table specification data.frame

exportDir

Directory files are being exported to

minCellCount

Minimum cell count - reccomended that you set with options("ohdsi.minCellCount" = count) in all R projects. Default is 5

validateTypes

Test if row values strictly conform to types - optional, not currently reccomended outside of development

usePrimaryKeyCheck

Test if primary key fields are violated at export step. - optional, not currently reccomended outside of development get table spec

databaseId

database identifier - required when exporting according to many specs

Method getTableSpec()

Get specification of table

Usage
ResultExportManager$getTableSpec(exportTableName)
Arguments
exportTableName

table name Get min col values

Method getMinColValues()

Columns to convert to minimum for a given table name

Usage
ResultExportManager$getMinColValues(rows, exportTableName)
Arguments
rows

data.frame of rows

exportTableName

stering table name - must be defined in spec Check row types

Method checkRowTypes()

Check types of rows before exporting

Usage
ResultExportManager$checkRowTypes(rows, exportTableName)
Arguments
rows

data.frame of rows to export

exportTableName

table name List tables

Method listTables()

list all tables in schema Check primary keys of exported data

Usage
ResultExportManager$listTables()

Method checkPrimaryKeys()

Checks to see if the rows conform to the valid primary keys If the same table has already been checked in the life of this object set "invalidateCache" to TRUE as the keys will be cached in a temporary file on disk.

Usage
ResultExportManager$checkPrimaryKeys(
  rows,
  exportTableName,
  invalidateCache = FALSE
)
Arguments
rows

data.frame to export

exportTableName

Table name (must be in spec)

invalidateCache

logical - if starting a fresh export use this to delete cache of primary keys Export data frame

Method exportDataFrame()

This method is intended for use where exporting a data.frame and not a query from a rdbms table For example, if you perform a transformation in R this method will check primary keys, min cell counts and data types before writing the file to according to the table spec

Usage
ResultExportManager$exportDataFrame(rows, exportTableName, append = FALSE)
Arguments
rows

Rows to export

exportTableName

Table name

append

logical - if true will append the result to a file, otherwise the file will be overwritten Export Data table with sql query

Method exportQuery()

Writes files in batch to stop overflowing system memory Checks primary keys on write Checks minimum cell count

Usage
ResultExportManager$exportQuery(
  connection,
  sql,
  exportTableName,
  transformFunction = NULL,
  transformFunctionArgs = list(),
  append = FALSE,
  ...
)
Arguments
connection

DatabaseConnector connection instance

sql

OHDSI sql string to export tables

exportTableName

Name of table to export (in snake_case format)

transformFunction

(optional) transformation of the data set callback. must take two paramters - rows and pos 

   Following this transformation callback, results will be verified against data model,
   Primary keys will be checked and minCellValue rules will be enforced
transformFunctionArgs

arguments to be passed to the transformation function

append

Logical add results to existing file, if FALSE (default) creates a new file and removes primary key validation cache

...

extra parameters passed to sql get manifest list

Method getManifestList()

Create a meta data set for each collection of result files with sha256 has for all files

Usage
ResultExportManager$getManifestList(
  packageName = NULL,
  packageVersion = NULL,
  migrationsPath = NULL,
  migrationRegexp = .defaultMigrationRegexp
)
Arguments
packageName

if an R analysis package, specify the name

packageVersion

if an analysis package, specify the version

migrationsPath

path to sql migrations (use top level folder (e.g. sql/sql_server/migrations)

migrationRegexp

(optional) regular expression to search for sql files. It is not reccomended to change the default. Write manifest

Method writeManifest()

Write manifest json

Usage
ResultExportManager$writeManifest(...)
Arguments
...

@seealso getManifestList

Method clone()

The objects of this class are cloneable with this method.

Usage
ResultExportManager$clone(deep = FALSE)
Arguments
deep

Whether to make a deep clone.

Unzips a results.zip file and enforces standards required by uploadResults

Description

This function will unzip the zipFile to the resultsFolder and assert that the file resultsDataModelSpecification.csv exists in the resultsFolder to ensure that it will work with uploadResults

Usage

unzipResults(zipFile, resultsFolder)

Arguments

zipFile

The location of the .zip file that holds the results to upload
resultsFolder

The folder to use when unzipping the .zip file. If this folder does not exist, this function will attempt to create the folder.

Upload results to the database server.

Description

Requires the results data model tables have been created using following the specifications, generateSqlSchema function.

Results files should be in the snake_case format for table headers and not camelCase

Set the POSTGRES_PATH environmental variable to the path to the folder containing the psql executable to enable bulk upload (recommended).

Usage

uploadResults(
  connection = NULL,
  connectionDetails = NULL,
  schema,
  resultsFolder,
  tablePrefix = "",
  forceOverWriteOfSpecifications = FALSE,
  purgeSiteDataBeforeUploading = TRUE,
  databaseIdentifierFile = "cdm_source_info.csv",
  runCheckAndFixCommands = FALSE,
  warnOnMissingTable = TRUE,
  purgeDataModel = FALSE,
  specifications
)

Arguments

connection

An object of type connection as created using the connect function in the DatabaseConnector package. Can be left NULL if connectionDetails is provided, in which case a new connection will be opened at the start of the function, and closed when the function finishes.
connectionDetails

An object of type connectionDetails as created using the createConnectionDetails function in the DatabaseConnector package.
schema

The schema on the postgres server where the tables have been created.
resultsFolder

The path to the folder containing the results to upload. See unzipResults for more information.
tablePrefix

String to prefix table names with - default is empty string
forceOverWriteOfSpecifications

If TRUE, specifications of the phenotypes, cohort definitions, and analysis will be overwritten if they already exist on the database. Only use this if these specifications have changed since the last upload.
purgeSiteDataBeforeUploading

If TRUE, before inserting data for a specific databaseId all the data for that site will be dropped. This assumes the results folder contains the full data for that data site.
databaseIdentifierFile

File contained that references databaseId field (used when purgeSiteDataBeforeUploading == TRUE). You may specify a relative path for the cdmSourceFile and the function will assume it resides in the resultsFolder. Alternatively, you can provide a path outside of the resultsFolder for this file.
runCheckAndFixCommands

If TRUE, the upload code will attempt to fix column names, data types and duplicate rows. This parameter is kept for legacy reasons - it is strongly recommended that you correct errors in your results where those results are assembled instead of relying on this option to try and fix it during upload.
warnOnMissingTable

Boolean, print a warning if a table file is missing.
purgeDataModel

This function will purge all data from the tables in the specification prior to upload. Use with care. If interactive this will require further input.
specifications

A tibble data frame object with specifications.