@InterfaceAudience.Public @InterfaceStability.Stable public class FirstKeyValueMatchingQualifiersFilter extends FirstKeyOnlyFilter
Note : It may emit KVs which do not have the given columns in them, if
these KVs happen to occur before a KV which does have a match. Given this
caveat, this filter is only useful for special cases
like RowCounter.
Filter.ReturnCode| Constructor and Description |
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FirstKeyValueMatchingQualifiersFilter(Set<byte[]> qualifiers)
Constructor which takes a set of columns.
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| Modifier and Type | Method and Description |
|---|---|
Filter.ReturnCode |
filterKeyValue(Cell v)
A way to filter based on the column family, column qualifier and/or the column value.
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static FirstKeyValueMatchingQualifiersFilter |
parseFrom(byte[] pbBytes) |
byte[] |
toByteArray()
Return length 0 byte array for Filters that don't require special serialization
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createFilterFromArguments, hasFoundKV, reset, setFoundKV, transformCellfilterAllRemaining, filterRow, filterRowCells, filterRowKey, getNextCellHint, getNextKeyHint, hasFilterRow, isFamilyEssential, toString, transformisReversed, setReversedpublic FirstKeyValueMatchingQualifiersFilter(Set<byte[]> qualifiers)
qualifiers - the set of columns to me matched.public Filter.ReturnCode filterKeyValue(Cell v)
FilterReturnCode.NEXT_ROW, it should return
ReturnCode.NEXT_ROW until Filter.reset() is called just in case the caller calls
for the next row.
Concrete implementers can signal a failure condition in their code by throwing an
IOException.filterKeyValue in class FirstKeyOnlyFilterv - the Cell in questionFilter.ReturnCodepublic byte[] toByteArray()
org.apache.hadoop.hbase.filter.FilterBasetoByteArray in class FirstKeyOnlyFilterpublic static FirstKeyValueMatchingQualifiersFilter parseFrom(byte[] pbBytes) throws org.apache.hadoop.hbase.exceptions.DeserializationException
pbBytes - A pb serialized FirstKeyValueMatchingQualifiersFilter instanceFirstKeyValueMatchingQualifiersFilter made from bytesorg.apache.hadoop.hbase.exceptions.DeserializationExceptiontoByteArray()Copyright © 2007–2019 The Apache Software Foundation. All rights reserved.