OffsetIndex (Apache Parquet Column 1.13.1 API)

```
public interface OffsetIndex
```
Offset index containing the offset and size of the page and the index of the first row in the page.

See Also:

OffsetIndex

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`int`	`getCompressedPageSize(int pageIndex)`
`long`	`getFirstRowIndex(int pageIndex)`
`default long`	`getLastRowIndex(int pageIndex, long rowGroupRowCount)`
`long`	`getOffset(int pageIndex)`
`int`	`getPageCount()`
`default int`	`getPageOrdinal(int pageIndex)`

- Method Detail
  - getPageCount
```
int getPageCount()
```
    Returns:
    
    the number of pages
  - getOffset
```
long getOffset(int pageIndex)
```
    Parameters:
    
    pageIndex - the index of the page
    
    Returns:
    
    the offset of the page in the file
  - getCompressedPageSize
```
int getCompressedPageSize(int pageIndex)
```
    Parameters:
    
    pageIndex - the index of the page
    
    Returns:
    
    the compressed size of the page (including page header)
  - getFirstRowIndex
```
long getFirstRowIndex(int pageIndex)
```
    Parameters:
    
    pageIndex - the index of the page
    
    Returns:
    
    the index of the first row in the page
  - getPageOrdinal
```
default int getPageOrdinal(int pageIndex)
```
    Parameters:
    
    pageIndex - the index of the page
    
    Returns:
    
    the original ordinal of the page in the column chunk
  - getLastRowIndex
```
default long getLastRowIndex(int pageIndex,
                             long rowGroupRowCount)
```
    Parameters:
    
    pageIndex - the index of the page
    
    rowGroupRowCount - the total number of rows in the row-group
    
    Returns:
    
    the calculated index of the last row of the given page