Libraries.Data.Database.QueryResultToDataFrameConverter Documentation

This class is used to take a QueryResult from a query such as a Find and take the data from a result and put all of the data into a DataFrame. The DataFrame class makes it easier to use different statistical tests from the Statisics Library.

Example Code

use Libraries.Data.Database.Database
use Libraries.Data.Database.Find
use Libraries.Data.Database.QueryResult
use Libraries.Data.Database.QueryResultToDataFrameConverter
use Libraries.Compute.Statistics.DataFrame

Database database
database:Connect("localhost", "myDatabase", "user", "SuperSecret456")

Find find
find:AddColumn("itemName")
find:AddColumn("quantity")
find:AddColumn("price")
find:SetTable("orders")

QueryResult result = database:Find(find)

QueryResultToDataFrameConverter converter
DataFrame frame = converter:Convert(result)

output frame:ToText()

Inherits from: Libraries.Language.Object

Actions Documentation

Compare(Libraries.Language.Object object)

This action compares two object hash codes and returns an integer. The result is larger if this hash code is larger than the object passed as a parameter, smaller, or equal. In this case, -1 means smaller, 0 means equal, and 1 means larger. This action was changed in Quorum 7 to return an integer, instead of a CompareResult object, because the previous implementation was causing efficiency issues.

Parameters

Return

integer: The Compare result, Smaller, Equal, or Larger.

Example

Object o
Object t
integer result = o:Compare(t) //1 (larger), 0 (equal), or -1 (smaller)

Convert(Libraries.Data.Database.QueryResult result)

This action takes a QueryResult and will iterate through it and put every row into a DataFrame and then return that DataFrame.

Parameters

Return

Libraries.Compute.Statistics.DataFrame: Returns a DataFrame that contains all the data from the QueryResult

Example

use Libraries.Data.Database.Database
use Libraries.Data.Database.Find
use Libraries.Data.Database.QueryResult
use Libraries.Data.Database.QueryResultToDataFrameConverter
use Libraries.Compute.Statistics.DataFrame

Database database
database:Connect("localhost", "myDatabase", "user", "SuperSecret456")

Find find
find:AddColumn("price")
find:SetTable("orders")

QueryResult result = database:Find(find)

QueryResultToDataFrameConverter converter
DataFrame frame = converter:Convert(result)

Equals(Libraries.Language.Object object)

This action determines if two objects are equal based on their hash code values.

Parameters

Return

boolean: True if the hash codes are equal and false if they are not equal.

Example

use Libraries.Language.Object
use Libraries.Language.Types.Text
Object o
Text t
boolean result = o:Equals(t)

GetHashCode()

This action gets the hash code for an object.

Return

integer: The integer hash code of the object.

Example

Object o
integer hash = o:GetHashCode()