Official | HULFT IoT EdgeStreaming Plugin SDK Getting Started Third Edition: July 1, 2021

Implementation of SampleSourceOperationFactory

SampleSourceOperationFactory is a class holding the following information:

 

Superclass	BQLPluginSourceOperationFactory class
Description	A Factory class that returns an object holding the properties of Source Operation and returns an operation object

 

Implementation of SampleSourceOperationFactory is as follows:

package com.appresso.ds.dp.modules.adapter.sample;

import com.appresso.ds.common.spi.constraint.NumberFillin;
import com.appresso.ds.common.spi.param.SimpleParameter;
import com.appresso.ds.common.xmlfw.xml.XmlHandler;
import com.appresso.ds.dp.share.adapter.bql.common.BQLPluginSourceOperationFactory;
import com.appresso.ds.dp.spi.OperationConfiguration;
import com.appresso.ds.dp.spi.OperationConfigurator;
import org.xml.sax.SAXException;

import static com.appresso.ds.common.bql.BQLSimpleParameterType.FLOAT;

public class SampleSourceOperationFactory extends BQLPluginSourceOperationFactory {

 @Override 
 protected String getLabel() {
  return Messages.getString("Sample.Source.Label");
 }

 @Override 
 protected String getPluginName() {
  return "sample_plugin";
 }

 @Override 
 public String getOperationName() {
  return "sample_source";
 }

 @Override 
 protected String getTypeName() {
  return "sample_source";
 }

 @Override 
 protected void setupOperationConfigurator(OperationConfigurator operationConfigurator) {
  operationConfigurator.addSimpleParameter(createIntervalParameter());
 }

 @Override 
 protected void setupOutputSchema(XmlHandler handler, OperationConfiguration conf) throws Exception {
  handler.startElement("", "payload", "payload", EMPTY_ATTRIBUTE);
  writeElement(handler, "value");
  handler.endElement("", "payload", "payload");
 }

 private void writeElement(XmlHandler handler, String name) throws SAXException {
  handler.startElement("", name, name, EMPTY_ATTRIBUTE);
  handler.endElement("", name, name);
 }

 private static SimpleParameter createIntervalParameter() {
  NumberFillin fillin = new NumberFillin();
  fillin.setMinValue(0.001);
  fillin.setMaxValue(1314000);
  fillin.setAllowMin(true);
  fillin.setAllowMax(true);
  fillin.setPrecision(10);
  fillin.setDecimal(3);
  fillin.setAllowDouble(true);
  fillin.setLabel(Messages.getString("Sample.Source.Interval.Label"));
  fillin.setRequired(true);
  return new SimpleParameter(FLOAT.toParameterKey("interval"), fillin);
 }
}
        

 

 

 

 

 

(c) Saison Information Systems Co., Ltd. 2019

 

Official | HULFT IoT EdgeStreaming Plugin SDK Getting Started Third Edition: July 1, 2021