com.devexperts.qd.qtp.fieldreplacer

Class TimeFieldReplacerFactory

java.lang.Object

com.devexperts.qd.qtp.fieldreplacer.TimeFieldReplacerFactory

All Implemented Interfaces:

FieldReplacer.Factory

@ServiceProvider
public class TimeFieldReplacerFactory
extends Object
implements FieldReplacer.Factory

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

Specification

Specification of this field replacer should be in the following format: "time:<recordFilter>:<configuration>", where recordFilter is a RecordOnlyFilter and configuration is a configuration of replacing strategy.

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

Replacing strategies

TimeFieldReplacer supports several strategies:

• current time: replaces time with current. See System.currentTimeMillis(). Configuration format: "current";
• increase/decrease time: increases or decreases time on specified delta. Configuration format: "+<time>" or "-<time>";
• specified time: replaces time with specified. Configuration format: "<time>".

All times should be in format according to TimePeriod.valueOf(String), but with no more than seconds precision.

Sample usage

The following code reads data from example.qds and changes the time of two hours and three minutes ago in all records.

     DXEndpoint endpoint = ...
     endpoint.connect("example.qds[fieldReplacer=time:*:-2h3m");
 

See Also:

FieldReplacer

Constructor Summary

Constructors

Constructor and Description
TimeFieldReplacerFactory()

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

TimeFieldReplacerFactory

public TimeFieldReplacerFactory()

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.