SegmentInfoProvider (Pinot Tools 0.9.2 API)

java.lang.Object
- org.apache.pinot.tools.query.comparison.SegmentInfoProvider

```
public class SegmentInfoProvider
extends Object
```
Given a segments directory, pick all segments and read the dictionaries for all single-value dimension columns. Here we will treat time column (if exists) as a single-value dimension column.

Constructor Summary

Constructors
Constructor Description

SegmentInfoProvider(String segmentDirName)
Assume that segments directory has at least one segment.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`List<String>`	`getMetricColumns()`	Return the list of metric columns
`List<String>`	`getSingleValueDimensionColumns()`	Return the list of single-value dimension columns.
`Map<String,List<Object>>`	`getSingleValueDimensionValuesMap()`	Return the map from single-value dimension names to values list for the column.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - SegmentInfoProvider
```
public SegmentInfoProvider(String segmentDirName)
                    throws Exception
```
    Assume that segments directory has at least one segment. - Gets all single-value dimension/metric columns from the directory. - Reads dictionaries for all single-value dimension columns.
    
    Parameters:
    
    segmentDirName - Name of directory containing tarred/untarred segments.
    
    Throws:
    
    Exception
- Method Detail
  - getSingleValueDimensionColumns
```
public List<String> getSingleValueDimensionColumns()
```
    Return the list of single-value dimension columns.
    
    Returns:
    
    single-value dimension columns.
  - getMetricColumns
```
public List<String> getMetricColumns()
```
    Return the list of metric columns
    
    Returns:
    
    metric columns.
  - getSingleValueDimensionValuesMap
```
public Map<String,List<Object>> getSingleValueDimensionValuesMap()
```
    Return the map from single-value dimension names to values list for the column.
    
    Returns:
    
    map from single-value dimension names to values list for the column.