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java.lang.Objectorg.apache.hadoop.hbase.filter.FilterBase
org.apache.hadoop.hbase.filter.CompareFilter
org.apache.hadoop.hbase.filter.DependentColumnFilter
public class DependentColumnFilter
A filter for adding inter-column timestamp matching Only cells with a correspondingly timestamped entry in the target column will be retained Not compatible with Scan.setBatch as operations need full rows for correct filtering
| Nested Class Summary |
|---|
| Nested classes/interfaces inherited from class org.apache.hadoop.hbase.filter.CompareFilter |
|---|
CompareFilter.CompareOp |
| Nested classes/interfaces inherited from interface org.apache.hadoop.hbase.filter.Filter |
|---|
Filter.ReturnCode |
| Field Summary | |
|---|---|
protected byte[] |
columnFamily
|
protected byte[] |
columnQualifier
|
protected boolean |
dropDependentColumn
|
protected Set<Long> |
stampSet
|
| Fields inherited from class org.apache.hadoop.hbase.filter.CompareFilter |
|---|
comparator, compareOp |
| Constructor Summary | |
|---|---|
DependentColumnFilter()
Should only be used for writable |
|
DependentColumnFilter(byte[] family,
byte[] qualifier)
Constructor for DependentColumn filter. |
|
DependentColumnFilter(byte[] family,
byte[] qualifier,
boolean dropDependentColumn)
Constructor for DependentColumn filter. |
|
DependentColumnFilter(byte[] family,
byte[] qualifier,
boolean dropDependentColumn,
CompareFilter.CompareOp valueCompareOp,
WritableByteArrayComparable valueComparator)
Build a dependent column filter with value checking dependent column varies will be compared using the supplied compareOp and comparator, for usage of which refer to CompareFilter |
|
| Method Summary | |
|---|---|
static Filter |
createFilterFromArguments(ArrayList<byte[]> filterArguments)
|
boolean |
dropDependentColumn()
|
boolean |
filterAllRemaining()
Filters that never filter all remaining can inherit this implementation that never stops the filter early. |
Filter.ReturnCode |
filterKeyValue(KeyValue v)
Filters that dont filter by key value can inherit this implementation that includes all KeyValues. |
boolean |
filterRow()
Filters that never filter by rows based on previously gathered state from FilterBase.filterKeyValue(KeyValue) can inherit this implementation that
never filters a row. |
void |
filterRow(List<KeyValue> kvs)
Filters that never filter by modifying the returned List of KeyValues can inherit this implementation that does nothing. |
boolean |
filterRowKey(byte[] buffer,
int offset,
int length)
Filters that do not filter by row key can inherit this implementation that never filters anything. |
boolean |
getDropDependentColumn()
|
byte[] |
getFamily()
|
byte[] |
getQualifier()
|
boolean |
hasFilterRow()
Fitlers that never filter by modifying the returned List of KeyValues can inherit this implementation that does nothing. |
void |
readFields(DataInput in)
|
void |
reset()
Filters that are purely stateless and do nothing in their reset() methods can inherit this null/empty implementation. |
void |
write(DataOutput out)
|
| Methods inherited from class org.apache.hadoop.hbase.filter.CompareFilter |
|---|
doCompare, extractArguments, getComparator, getOperator |
| Methods inherited from class org.apache.hadoop.hbase.filter.FilterBase |
|---|
getNextKeyHint, transform |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
|---|
protected byte[] columnFamily
protected byte[] columnQualifier
protected boolean dropDependentColumn
protected Set<Long> stampSet
| Constructor Detail |
|---|
public DependentColumnFilter()
public DependentColumnFilter(byte[] family,
byte[] qualifier,
boolean dropDependentColumn,
CompareFilter.CompareOp valueCompareOp,
WritableByteArrayComparable valueComparator)
CompareFilter
family - dependent column familyqualifier - dependent column qualifierdropDependentColumn - whether the column should be discarded aftervalueCompareOp - comparison opvalueComparator - comparator
public DependentColumnFilter(byte[] family,
byte[] qualifier)
family - name of target column familyqualifier - name of column qualifier
public DependentColumnFilter(byte[] family,
byte[] qualifier,
boolean dropDependentColumn)
family - name of dependent column familyqualifier - name of dependent qualifierdropDependentColumn - whether the dependent columns keyvalues should be discarded| Method Detail |
|---|
public byte[] getFamily()
public byte[] getQualifier()
public boolean dropDependentColumn()
public boolean getDropDependentColumn()
public boolean filterAllRemaining()
FilterBase
filterAllRemaining in interface FilterfilterAllRemaining in class FilterBasepublic Filter.ReturnCode filterKeyValue(KeyValue v)
FilterBase
filterKeyValue in interface FilterfilterKeyValue in class FilterBasev - the KeyValue in question
Filter.ReturnCodepublic void filterRow(List<KeyValue> kvs)
FilterBase
filterRow in interface FilterfilterRow in class FilterBasekvs - the list of keyvalues to be filteredpublic boolean hasFilterRow()
FilterBase
hasFilterRow in interface FilterhasFilterRow in class FilterBasepublic boolean filterRow()
FilterBaseFilterBase.filterKeyValue(KeyValue) can inherit this implementation that
never filters a row.
filterRow in interface FilterfilterRow in class FilterBase
public boolean filterRowKey(byte[] buffer,
int offset,
int length)
FilterBase
filterRowKey in interface FilterfilterRowKey in class FilterBasebuffer - buffer containing row keyoffset - offset into buffer where row key startslength - length of the row key
public void reset()
FilterBase
reset in interface Filterreset in class FilterBasepublic static Filter createFilterFromArguments(ArrayList<byte[]> filterArguments)
public void readFields(DataInput in)
throws IOException
readFields in interface org.apache.hadoop.io.WritablereadFields in class CompareFilterIOException
public void write(DataOutput out)
throws IOException
write in interface org.apache.hadoop.io.Writablewrite in class CompareFilterIOException
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