_hash_to_scan

in linkis-engineconn-plugins/hbase/hbase-shims-1.2.0/src/main/resources/hbase-ruby/hbase/table.rb [414:487]

• 62 lines of code
• 26 McCabe index (conditional complexity)

    def _hash_to_scan(args)
      if args.any?
        enablemetrics = args["ALL_METRICS"].nil? ? false : args["ALL_METRICS"]
        enablemetrics = enablemetrics || !args["METRICS"].nil?
        filter = args["FILTER"]
        startrow = args["STARTROW"] || ''
        stoprow = args["STOPROW"]
        rowprefixfilter = args["ROWPREFIXFILTER"]
        timestamp = args["TIMESTAMP"]
        columns = args["COLUMNS"] || args["COLUMN"] || []
        
        cache_blocks = args["CACHE_BLOCKS"].nil? ? true: args["CACHE_BLOCKS"]
        cache = args["CACHE"] || 0
        reversed = args["REVERSED"] || false
        versions = args["VERSIONS"] || 1
        timerange = args[TIMERANGE]
        raw = args["RAW"] || false
        attributes = args[ATTRIBUTES]
        authorizations = args[AUTHORIZATIONS]
        consistency = args[CONSISTENCY]
        
        columns = [columns] if columns.class == String
        limit = args["LIMIT"] || -1
        unless columns.kind_of?(Array)
          raise ArgumentError.new("COLUMNS must be specified as a String or an Array")
        end

        scan = if stoprow
          org.apache.hadoop.hbase.client.Scan.new(startrow.to_java_bytes, stoprow.to_java_bytes)
        else
          org.apache.hadoop.hbase.client.Scan.new(startrow.to_java_bytes)
        end

        
        scan.setRowPrefixFilter(rowprefixfilter.to_java_bytes) if rowprefixfilter

        
        @converters.clear()

        columns.each do |c|
          family, qualifier = parse_column_name(c.to_s)
          if qualifier
            scan.addColumn(family, qualifier)
          else
            scan.addFamily(family)
          end
        end

        unless filter.class == String
          scan.setFilter(filter)
        else
          scan.setFilter(
            org.apache.hadoop.hbase.filter.ParseFilter.new.parseFilterString(filter.to_java_bytes))
        end

        scan.setScanMetricsEnabled(enablemetrics) if enablemetrics
        scan.setTimeStamp(timestamp) if timestamp
        scan.setCacheBlocks(cache_blocks)
        scan.setReversed(reversed)
        scan.setCaching(cache) if cache > 0
        scan.setMaxVersions(versions) if versions > 1
        scan.setTimeRange(timerange[0], timerange[1]) if timerange
        scan.setRaw(raw)
        scan.setCaching(limit) if limit > 0
        set_attributes(scan, attributes) if attributes
        set_authorizations(scan, authorizations) if authorizations
        scan.setConsistency(org.apache.hadoop.hbase.client.Consistency.valueOf(consistency)) if consistency
      else
        scan = org.apache.hadoop.hbase.client.Scan.new
      end

      scan
    end