ReferenceDataObject

Reference data provides additional context to support advance stream processing use case

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Overview

Joule provides a base implementation for the storage of a reference data element. The class extends the HashMap<String, Object> class and therefore has all the benefits of a Map with a couple of extensions.

The ReferenceDataObject provides a generic data structure for reference data to be store and queried against

Understanding this structure and how to use it enables you to develop custom components that are optimised for processing efficiency while providing the enough flexibility to represent external data within the Joule platform.

Key Features

ReferenceDataObject can be located under the following package

com.fractalworks.streams.sdk.referencedata

Attributes

Attribute	Description	Type
key	Unique reference data key used when performing query lookups	Object
data	Custom data to be stored outside of the Map structure	Object

Key Methods

Key

To add new attributes to an event there are two methods which can be used. If a null value has been passed this will be converted to a String null value.

// Set lookup key
public void setKey(Object key);

// Get lookup key
public Object getKey();

Data

o add new attributes to an event there are two methods which can be used. If a null value has been passed this will be converted to a String null value.

// Set custom data object
public void setData(Object data);

// Get the custom data object
public Object getData();