hbColumn (Type of variable)

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Properties specific to the description of hbColumn variables
WLanguage functions that use the hbColumn type

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hbColumn (Type of variable)

In french: hbColonne

The hbColumn type is used to define the advanced characteristics of a column (item) in a 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: See Declaring a variable for more details on the declaration of this type of variable and the use of WLanguage properties.

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 the description of hbColumn variables

The following properties can be used to handle a column:

Property name	Type used	Effect

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

WLanguage functions that use the hbColumn type


Versions 21 and later hbDelete New in version 21 hbDelete hbDelete	Deletes: one or more cells from a HBase table for one or more columns. a row from a HBase table.