Class CountDistinctMetric
- java.lang.Object
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- org.apache.solr.client.solrj.io.stream.metrics.Metric
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- org.apache.solr.client.solrj.io.stream.metrics.CountDistinctMetric
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- All Implemented Interfaces:
Expressible
public class CountDistinctMetric extends Metric
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Field Summary
Fields Modifier and Type Field Description static String
APPROX_COUNT_DISTINCT
static String
COUNT_DISTINCT
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Fields inherited from class org.apache.solr.client.solrj.io.stream.metrics.Metric
outputLong
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Constructor Summary
Constructors Constructor Description CountDistinctMetric(String columnName)
CountDistinctMetric(String columnName, boolean isApproximate)
CountDistinctMetric(StreamExpression expression, StreamFactory factory)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description String[]
getColumns()
Number
getValue()
Metric
newInstance()
StreamExpressionParameter
toExpression(StreamFactory factory)
void
update(Tuple tuple)
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Methods inherited from class org.apache.solr.client.solrj.io.stream.metrics.Metric
getFunctionName, getIdentifier, getMetricNodeId, setFunctionName, setIdentifier, setIdentifier, toExplanation
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Field Detail
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COUNT_DISTINCT
public static final String COUNT_DISTINCT
- See Also:
- Constant Field Values
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APPROX_COUNT_DISTINCT
public static final String APPROX_COUNT_DISTINCT
- See Also:
- Constant Field Values
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Constructor Detail
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CountDistinctMetric
public CountDistinctMetric(String columnName)
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CountDistinctMetric
public CountDistinctMetric(String columnName, boolean isApproximate)
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CountDistinctMetric
public CountDistinctMetric(StreamExpression expression, StreamFactory factory) throws IOException
- Throws:
IOException
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Method Detail
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newInstance
public Metric newInstance()
- Specified by:
newInstance
in classMetric
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getColumns
public String[] getColumns()
- Specified by:
getColumns
in classMetric
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toExpression
public StreamExpressionParameter toExpression(StreamFactory factory) throws IOException
- Throws:
IOException
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