hbColumn (Type of variable)

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Managing HBase databases

hbColumn

Presentation

Example

Properties specific to hbColumn variables

WLanguage functions that use the hbColumn type

See also

hbColumn (Type of variable)

In french: hbColonne

The hbColumn type is used to define the advanced characteristics of a column (item) in an HBase table. The characteristics of this column can be defined and modified using different WLanguage properties.

This type of variable is used by the hbReading, hbScanParameter and hbScanResult variables.

Remark: For more details on the declaration of this type of variable and the use of WLanguage properties, see Declaring a variable.

Example

// Connection
Connection is hbConnection
Connection.Server = "MyServer"
// Description of data to read
Reading is hbReading
Reading.Row = "post1"
Reading.Version = 2
// Column description
Col is hbColumn
Col.Family = "Post"
Add(Reading.Column, Col)
// Read data
MyResult is array of hbCells = hbRead(Connection, "blog", Reading)
// Display the data read
FOR EACH Cell OF MyResult DO
Trace("Column: " + Cell.Column.Qualifier + "; Value: " + ...
Cell.Value + "; timestamp: " + Cell.Timestamp)
END

Remarks

Properties specific to hbColumn variables

The following properties can be used to handle a column:

Property name	Type used	Effect

Family	Buffer	Name of the group of columns.
Qualifier	Buffer	Qualifier of the column.

WLanguage functions that use the hbColumn type


hbDelete	Deletes: one or more cells from an HBase table for one or more columns. a row from an HBase table.