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 by several 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.

Remark: These properties can be handled by using one of the following syntaxes:

<Variable name>..<Property name>
<Variable name>.<Property name>

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.