com.thanglequoc.aqicalculator.PollutantsBreakpointGenerator Maven / Gradle / Ivy

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AQI Calculator give the detail result from AQI calculation. It also supports NowCast

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package com.thanglequoc.aqicalculator;

import java.io.IOException;
import java.io.InputStream;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;

class PollutantsBreakpointGenerator {
    
    private PollutantsBreakpoint pollutantsBreakpoint;
    private PollutantBreakpointParser pollutantBreakpointParser;
    
    PollutantsBreakpointGenerator() throws IOException {
        pollutantBreakpointParser = new PollutantBreakpointParser();
        pollutantsBreakpoint = new PollutantsBreakpoint();
        parseBreakpoints();
    }
    
    private void parseBreakpoints() throws IOException {
        ObjectMapper mapper = new ObjectMapper();
        ClassLoader classLoader = PollutantsBreakpointGenerator.class.getClassLoader();
        try (InputStream inputStream = classLoader
                .getResourceAsStream(AQICalculatorConstants.AQI_BREAKPOINT_RESOURCE_PATH)) {
            JsonNode root = mapper.readTree(inputStream);
            for (JsonNode pollutantNode : root) {
                PollutantBreakpoint pollutantBreakpoint = pollutantBreakpointParser.parseNode(pollutantNode);
                pollutantsBreakpoint.addPollutantBreakpoint(pollutantBreakpoint);
            }
        }
    }
    
    PollutantsBreakpoint getPollutantsBreakpoint() {
        return pollutantsBreakpoint;
    }
    
}