com.devexperts.qd.qtp.fieldreplacer

Class DateFieldReplacerFactory

java.lang.Object

com.devexperts.qd.qtp.fieldreplacer.DateFieldReplacerFactory

All Implemented Interfaces:

FieldReplacer.Factory

@ServiceProvider
public class DateFieldReplacerFactory
extends Object
implements FieldReplacer.Factory

This factory creates an implementation of FieldReplacer that provides an ability to replace date fields according to the specified strategy.

Specification

Specification of this field replacer should be in the following format: "date:<recordFilter>:<target>:<configuration>[:<timezone>]", where recordFilter is a RecordOnlyFilter, target is a name of the date field, configuration is a configuration of the replacing strategy, and timezone is a time zone.

For all record cursors which are accepted by recordFilter all fields with serial type SerialFieldType.DATE (or created by SerialFieldType.withName(String) method) are replaced with the new date according to the specified strategy.

Replacing strategies

DateFieldReplacer supports several strategies:

• current date: replaces date with the current one. Configuration format: "current";
• previous date: replaces date with the yesterday date. Configuration format: "previous";
• increase/decrease day: increases or decreases date with the specified delta. Configuration format: "+<number>" or "-<number>";
• specified date: replaces date with the specified one. Configuration format: "0" (N/A date) or "yyyyMMdd".

Current and previous date strategies allow to specify timezone to calculate day boundaries.

Sample usage

The following code reads data from example.qds and shifts the date to three days ago in "DayId" fields in all records.

     DXEndpoint endpoint = ...
     endpoint.connect("example.qds[fieldReplacer=date:*:DayId:-3");
 

See Also:

FieldReplacer

Constructor Summary

Constructors

Constructor and Description
DateFieldReplacerFactory()

Method Summary

Modifier and Type	Method and Description
FieldReplacer	createFieldReplacer(String fieldReplacerSpec, DataScheme dataScheme) Creates field replacer for specified data scheme from specification.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DateFieldReplacerFactory

public DateFieldReplacerFactory()

Method Detail

createFieldReplacer

public FieldReplacer createFieldReplacer(String fieldReplacerSpec,
                                         DataScheme dataScheme)

Description copied from interface: FieldReplacer.Factory

Creates field replacer for specified data scheme from specification.

NOTE: the only one factory can support specification.

Specified by:

createFieldReplacer in interface FieldReplacer.Factory

Parameters:

fieldReplacerSpec - specification of FieldReplacer. The specification should start with "<factory_name>:" to detect should factory support the specification or not.

dataScheme - current data scheme

Returns:

new field replacer if this factory supports specification, null otherwise.