com.yahoo.bard.webservice.web

Class MetricParser

java.lang.Object

com.yahoo.bard.webservice.web.MetricParser

public class MetricParser
extends Object

This class will separate the metrics and associated filters from metricString. It will then create an array of JSON objects which contains metric name and metric filter as attributes

Constructor Summary

Constructors

Constructor and Description
MetricParser()

Method Summary

Modifier and Type	Method and Description
static com.fasterxml.jackson.databind.node.ArrayNode	generateMetricFilterJsonArray(String metricString) This function converts the string of metrics extracted from the url into ArrayNode.

Methods inherited from class java.lang.Object

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

Constructor Detail

MetricParser

public MetricParser()

Method Detail

generateMetricFilterJsonArray

public static com.fasterxml.jackson.databind.node.ArrayNode generateMetricFilterJsonArray(String metricString)

This function converts the string of metrics extracted from the url into ArrayNode.

Parameters:

metricString - An Api metric string eg:

 metricString = metric1(AND(dim1|id-in[a,b],dim2|id-in[c,d])),metric2 

Returns:

A JSONArray constructed from a given metricString. Eg:

 {[{"filter":{"AND":{"dim2|id-in":["abc","xyz"],"dim3|id-in":["mobile","tablet"]}}, "name":"metric1"},
 {"filter":{},"name":"metric2"}]}

Throws:

IllegalArgumentException - if metricString is empty or the metricString has unbalanced brackets