LegacyScanQueryMatcher (Apache HBase 1.4.11 API)

java.lang.Object
- org.apache.hadoop.hbase.regionserver.querymatcher.ScanQueryMatcher
- - org.apache.hadoop.hbase.regionserver.querymatcher.LegacyScanQueryMatcher

Deprecated.
```
@Deprecated
@InterfaceAudience.Private
public class LegacyScanQueryMatcher
extends ScanQueryMatcher
```
The old query matcher implementation. Used to keep compatibility for coprocessor that could overwrite the StoreScanner before compaction. Should be removed once we find a better way to do filtering during compaction.

Nested Class Summary
- Nested classes/interfaces inherited from class org.apache.hadoop.hbase.regionserver.querymatcher.ScanQueryMatcher
  ScanQueryMatcher.MatchCode

Field Summary

Fields
Modifier and Type	Field and Description
`protected long`	`earliestPutTs` Deprecated. Oldest put in any of the involved store files Used to decide whether it is ok to delete family delete marker of this store keeps deleted KVs.

Fields inherited from class org.apache.hadoop.hbase.regionserver.querymatcher.ScanQueryMatcher
columns, currentRow, now, oldestUnexpiredTS, rowComparator, startKey

Method Summary

Methods
Modifier and Type	Method and Description
`static LegacyScanQueryMatcher`	`create(Scan scan, ScanInfo scanInfo, NavigableSet<byte[]> columns, ScanType scanType, long readPointToUse, long earliestPutTs, long oldestUnexpiredTS, long now, byte[] dropDeletesFromRow, byte[] dropDeletesToRow, RegionCoprocessorHost regionCoprocessorHost)` Deprecated.
`Filter`	`getFilter()` Deprecated.
`Cell`	`getNextKeyHint(Cell cell)` Deprecated. Delegate to `Filter.getNextCellHint(Cell)`.
`boolean`	`hasNullColumnInQuery()` Deprecated.
`boolean`	`isUserScan()` Deprecated.
`ScanQueryMatcher.MatchCode`	`match(Cell cell)` Deprecated. Determines if the caller should do one of several things: seek/skip to the next row (MatchCode.SEEK_NEXT_ROW) seek/skip to the next column (MatchCode.SEEK_NEXT_COL) include the current KeyValue (MatchCode.INCLUDE) ignore the current KeyValue (MatchCode.SKIP) got to the next row (MatchCode.DONE)
`boolean`	`moreRowsMayExistAfter(Cell cell)` Deprecated.
`protected void`	`reset()` Deprecated.

Methods inherited from class org.apache.hadoop.hbase.regionserver.querymatcher.ScanQueryMatcher
checkDeleted, clearCurrentRow, compareKeyForNextColumn, compareKeyForNextRow, createStartKeyFromRow, currentRow, getKeyForNextColumn, getStartKey, instantiateDeleteTracker, preCheck, setToNewRow

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

- Field Detail
  - earliestPutTs
```
protected final long earliestPutTs
```
    Deprecated.
    
    Oldest put in any of the involved store files Used to decide whether it is ok to delete family delete marker of this store keeps deleted KVs.
- Method Detail
  - match
```
public ScanQueryMatcher.MatchCode match(Cell cell)
                                 throws IOException
```
    Deprecated.
    
    Description copied from class: ScanQueryMatcher
    Determines if the caller should do one of several things:
    - seek/skip to the next row (MatchCode.SEEK_NEXT_ROW)
    - seek/skip to the next column (MatchCode.SEEK_NEXT_COL)
    - include the current KeyValue (MatchCode.INCLUDE)
    - ignore the current KeyValue (MatchCode.SKIP)
    - got to the next row (MatchCode.DONE)
    Specified by:
    
    match in class ScanQueryMatcher
    
    Parameters:
    cell - KeyValue to check
    
    Returns:
    The match code instance.
    
    Throws:
    
    IOException - in case there is an internal consistency problem caused by a data corruption.
  - hasNullColumnInQuery
```
public boolean hasNullColumnInQuery()
```
    Deprecated.
    
    Specified by:
    
    hasNullColumnInQuery in class ScanQueryMatcher
    
    Returns:
    whether there is an null column in the query
  - reset
```
protected void reset()
```
    Deprecated.
    
    Specified by:
    
    reset in class ScanQueryMatcher
  - isUserScan
```
public boolean isUserScan()
```
    Deprecated.
    
    Specified by:
    
    isUserScan in class ScanQueryMatcher
  - moreRowsMayExistAfter
```
public boolean moreRowsMayExistAfter(Cell cell)
```
    Deprecated.
    
    Specified by:
    
    moreRowsMayExistAfter in class ScanQueryMatcher
    
    Returns:
    Returns false if we know there are no more rows to be scanned (We've reached the stopRow or we are scanning on row only because this Scan is for a Get, etc.
  - getFilter
```
public Filter getFilter()
```
    Deprecated.
    
    Specified by:
    
    getFilter in class ScanQueryMatcher
    
    Returns:
    the Filter
  - getNextKeyHint
```
public Cell getNextKeyHint(Cell cell)
                    throws IOException
```
    Deprecated.
    
    Description copied from class: ScanQueryMatcher
    
    Delegate to Filter.getNextCellHint(Cell). If no filter, return null.
    
    Specified by:
    
    getNextKeyHint in class ScanQueryMatcher
    
    Throws:
    
    IOException
  - create
```
public static LegacyScanQueryMatcher create(Scan scan,
                            ScanInfo scanInfo,
                            NavigableSet<byte[]> columns,
                            ScanType scanType,
                            long readPointToUse,
                            long earliestPutTs,
                            long oldestUnexpiredTS,
                            long now,
                            byte[] dropDeletesFromRow,
                            byte[] dropDeletesToRow,
                            RegionCoprocessorHost regionCoprocessorHost)
                                     throws IOException
```
    Deprecated.
    
    Throws:
    
    IOException

Class LegacyScanQueryMatcher

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hbase.regionserver.querymatcher.ScanQueryMatcher

Field Summary

Fields inherited from class org.apache.hadoop.hbase.regionserver.querymatcher.ScanQueryMatcher

Method Summary

Methods inherited from class org.apache.hadoop.hbase.regionserver.querymatcher.ScanQueryMatcher

Methods inherited from class java.lang.Object

Field Detail

earliestPutTs

Method Detail

match

hasNullColumnInQuery

reset

isUserScan

moreRowsMayExistAfter

getFilter

getNextKeyHint

create