PrefixFilterAdapter (Cloud Bigtable HBase Client for Java 1.12.0 API)

com.google.cloud.bigtable.hbase.adapters.filters

Class PrefixFilterAdapter

• java.lang.Object
• • com.google.cloud.bigtable.hbase.adapters.filters.TypedFilterAdapterBase<PrefixFilter>
  • • com.google.cloud.bigtable.hbase.adapters.filters.PrefixFilterAdapter

• All Implemented Interfaces:

  TypedFilterAdapter<PrefixFilter>

  ---

  
  

  public class PrefixFilterAdapter
  extends TypedFilterAdapterBase<PrefixFilter>

  Adapter for HBase PrefixFilter instances.

  Version:

  $Id: $Id

  Author:

  sduskis

• • Constructor Summary

    Constructors 

    Constructor and Description
    PrefixFilterAdapter()

  • Method Summary

    All Methods Instance Methods Concrete Methods 

    Modifier and Type	Method and Description
    com.google.cloud.bigtable.data.v2.models.Filters.Filter	adapt(FilterAdapterContext context, PrefixFilter filter) Adapt the given filter.
    RangeSet<RowKeyWrapper>	getIndexScanHint(PrefixFilter filter) Get hints how to optimize the scan.
    FilterSupportStatus	isFilterSupported(FilterAdapterContext context, PrefixFilter filter) Determine if the given filter can be adapted to a Bigtable RowFilter.

    • Methods inherited from class java.lang.Object

      clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

• • Constructor Detail

    • PrefixFilterAdapter

      public PrefixFilterAdapter()

  • Method Detail

    • adapt

      public com.google.cloud.bigtable.data.v2.models.Filters.Filter adapt(FilterAdapterContext context,
                                                                           PrefixFilter filter)
                                                                    throws IOException

      Adapt the given filter. Implementers of this method should assume that isFilterSupported has already been called with a result indicating it is in fact supproted.

      Parameters:

      context - a FilterAdapterContext object.

      filter - a S object.

      Returns:

      a Filters.Filter object.

      Throws:

      IOException - if any.

    • isFilterSupported

      public FilterSupportStatus isFilterSupported(FilterAdapterContext context,
                                                   PrefixFilter filter)

      Determine if the given filter can be adapted to a Bigtable RowFilter.

      Parameters:

      context - a FilterAdapterContext object.

      filter - a S object.

      Returns:

      a FilterSupportStatus object.

    • getIndexScanHint

      public RangeSet<RowKeyWrapper> getIndexScanHint(PrefixFilter filter)

      Description copied from interface: TypedFilterAdapter
      Get hints how to optimize the scan. For example if the filter will narrow the scan using the prefix "ab" then we can restrict the scan to ["ab" - "ac"). If the filter doesn't narrow the scan then it should return Range.all()

      Specified by:

      getIndexScanHint in interface TypedFilterAdapter<PrefixFilter>

      Overrides:

      getIndexScanHint in class TypedFilterAdapterBase<PrefixFilter>

      Parameters:

      filter - a S object.

      Returns:

      a RangeSet object.