Package org.apache.hadoop.hbase.filter

Class ColumnRangeFilter

java.lang.Object
org.apache.hadoop.hbase.filter.Filter
org.apache.hadoop.hbase.filter.FilterBase
org.apache.hadoop.hbase.filter.ColumnRangeFilter
All Implemented Interfaces:
HintingFilter
@Public public class ColumnRangeFilter extends FilterBase implements HintingFilter
This filter is used for selecting only those keys with columns that are between minColumn to maxColumn. For example, if minColumn is 'an', and maxColumn is 'be', it will pass keys with columns like 'ana', 'bad', but not keys with columns like 'bed', 'eye' If minColumn is null, there is no lower bound. If maxColumn is null, there is no upper bound. minColumnInclusive and maxColumnInclusive specify if the ranges are inclusive or not.

  • Field Details

  • Constructor Details

    • ColumnRangeFilter

      public ColumnRangeFilter(byte[] minColumn, boolean minColumnInclusive, byte[] maxColumn, boolean maxColumnInclusive)
      Create a filter to select those keys with columns that are between minColumn and maxColumn.
      Parameters:
      minColumn - minimum value for the column range. If if it's null, there is no lower bound.
      minColumnInclusive - if true, include minColumn in the range.
      maxColumn - maximum value for the column range. If it's null,
      maxColumnInclusive - if true, include maxColumn in the range. there is no upper bound.

  • Method Details

    • isMinColumnInclusive

      public boolean isMinColumnInclusive()
      Returns if min column range is inclusive.

    • isMaxColumnInclusive

      public boolean isMaxColumnInclusive()
      Returns if max column range is inclusive.

    • getMinColumn

      public byte[] getMinColumn()
      Returns the min column range for the filter

    • getMinColumnInclusive

      public boolean getMinColumnInclusive()
      Returns true if min column is inclusive, false otherwise

    • getMaxColumn

      public byte[] getMaxColumn()
      Returns the max column range for the filter

    • getMaxColumnInclusive

      public boolean getMaxColumnInclusive()
      Returns true if max column is inclusive, false otherwise

    • filterRowKey

      public boolean filterRowKey(Cell cell) throws IOException
      Description copied from class: Filter
      Filters a row based on the row key. If this returns true, the entire row will be excluded. If false, each KeyValue in the row will be passed to Filter.filterCell(Cell) below. If Filter.filterAllRemaining() returns true, then Filter.filterRowKey(Cell) should also return true. Concrete implementers can signal a failure condition in their code by throwing an IOException.
      Overrides:
      filterRowKey in class FilterBase
      Parameters:
      cell - The first cell coming in the new row
      Returns:
      true, remove entire row, false, include the row (maybe).
      Throws:
      IOException - in case an I/O or an filter specific failure needs to be signaled.

    • filterCell

      public Filter.ReturnCode filterCell(Cell c)
      Description copied from class: Filter
      A way to filter based on the column family, column qualifier and/or the column value. Return code is described below. This allows filters to filter only certain number of columns, then terminate without matching ever column. If filterRowKey returns true, filterCell needs to be consistent with it. filterCell can assume that filterRowKey has already been called for the row. If your filter returns ReturnCode.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.
      Overrides:
      filterCell in class Filter
      Parameters:
      c - the Cell in question
      Returns:
      code as described below
      See Also:

    • createFilterFromArguments

      public static Filter createFilterFromArguments(ArrayList<byte[]> filterArguments)

    • toByteArray

      public byte[] toByteArray()
      Returns The filter serialized using pb
      Overrides:
      toByteArray in class FilterBase
      Returns:
      The filter serialized using pb

    • parseFrom

      public static ColumnRangeFilter parseFrom(byte[] pbBytes) throws DeserializationException
      Parse a serialized representation of ColumnRangeFilter
      Parameters:
      pbBytes - A pb serialized ColumnRangeFilter instance
      Returns:
      An instance of ColumnRangeFilter made from bytes
      Throws:
      DeserializationException - if an error occurred
      See Also:

    • areSerializedFieldsEqual

      boolean areSerializedFieldsEqual(Filter o)
      Returns true if and only if the fields of the filter that are serialized are equal to the corresponding fields in other. Used for testing.
      Overrides:
      areSerializedFieldsEqual in class FilterBase
      Returns:
      true if and only if the fields of the filter that are serialized are equal to the corresponding fields in other. Used for testing.

    • getNextCellHint

      public Cell getNextCellHint(Cell cell)
      Description copied from class: FilterBase
      Filters that are not sure which key must be next seeked to, can inherit this implementation that, by default, returns a null Cell. If the filter returns the match code SEEK_NEXT_USING_HINT, then it should also tell which is the next key it must seek to. After receiving the match code SEEK_NEXT_USING_HINT, the QueryMatcher would call this function to find out which key it must next seek to. Concrete implementers can signal a failure condition in their code by throwing an IOException. NOTICE: Filter will be evaluate at server side so the returned Cell must be an ExtendedCell, although it is marked as IA.Private.
      Overrides:
      getNextCellHint in class FilterBase
      Returns:
      KeyValue which must be next seeked. return null if the filter is not sure which key to seek to next.

    • toString

      public String toString()
      Description copied from class: FilterBase
      Return filter's info for debugging and logging purpose.
      Overrides:
      toString in class FilterBase

    • equals

      public boolean equals(Object obj)
      Overrides:
      equals in class Object

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object