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java.lang.Objectorg.apache.hadoop.hbase.regionserver.ScanQueryMatcher
@InterfaceAudience.Private public class ScanQueryMatcher
A query matcher that is specifically designed for the scan case.
| Nested Class Summary | |
|---|---|
static class |
ScanQueryMatcher.MatchCode
match(org.apache.hadoop.hbase.KeyValue) return codes. |
| Field Summary | |
|---|---|
protected long |
maxReadPointToTrackVersions
readPoint over which the KVs are unconditionally included |
| Constructor Summary | |
|---|---|
ScanQueryMatcher(Scan scan,
ScanInfo scanInfo,
NavigableSet<byte[]> columns,
long readPointToUse,
long earliestPutTs,
long oldestUnexpiredTS,
byte[] dropDeletesFromRow,
byte[] dropDeletesToRow)
Construct a QueryMatcher for a scan that drop deletes from a limited range of rows. |
|
ScanQueryMatcher(Scan scan,
ScanInfo scanInfo,
NavigableSet<byte[]> columns,
ScanType scanType,
long readPointToUse,
long earliestPutTs,
long oldestUnexpiredTS)
Construct a QueryMatcher for a scan |
|
| Method Summary | |
|---|---|
KeyValue |
getKeyForNextColumn(KeyValue kv)
|
KeyValue |
getKeyForNextRow(KeyValue kv)
|
KeyValue |
getNextKeyHint(KeyValue kv)
|
KeyValue |
getStartKey()
|
boolean |
hasNullColumnInQuery()
|
ScanQueryMatcher.MatchCode |
match(KeyValue kv)
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(KeyValue kv)
|
void |
reset()
|
void |
setRow(byte[] row,
int offset,
short length)
Set current row |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
|---|
protected long maxReadPointToTrackVersions
| Constructor Detail |
|---|
public ScanQueryMatcher(Scan scan,
ScanInfo scanInfo,
NavigableSet<byte[]> columns,
ScanType scanType,
long readPointToUse,
long earliestPutTs,
long oldestUnexpiredTS)
scan - scanInfo - The store's immutable scan infocolumns - scanType - Type of the scanearliestPutTs - Earliest put seen in any of the store files.oldestUnexpiredTS - the oldest timestamp we are interested in,
based on TTL
public ScanQueryMatcher(Scan scan,
ScanInfo scanInfo,
NavigableSet<byte[]> columns,
long readPointToUse,
long earliestPutTs,
long oldestUnexpiredTS,
byte[] dropDeletesFromRow,
byte[] dropDeletesToRow)
scan - scanInfo - The store's immutable scan infocolumns - earliestPutTs - Earliest put seen in any of the store files.oldestUnexpiredTS - the oldest timestamp we are interested in,
based on TTLdropDeletesFromRow - The inclusive left bound of the range; can be EMPTY_START_ROW.dropDeletesToRow - The exclusive right bound of the range; can be EMPTY_END_ROW.| Method Detail |
|---|
public boolean hasNullColumnInQuery()
public ScanQueryMatcher.MatchCode match(KeyValue kv)
throws IOException
kv - KeyValue to check
IOException - in case there is an internal consistency problem
caused by a data corruption.public boolean moreRowsMayExistAfter(KeyValue kv)
public void setRow(byte[] row,
int offset,
short length)
row - public void reset()
public KeyValue getStartKey()
public KeyValue getNextKeyHint(KeyValue kv)
throws IOException
IOExceptionpublic KeyValue getKeyForNextColumn(KeyValue kv)
public KeyValue getKeyForNextRow(KeyValue kv)
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