0.90/src/main/ruby/shell/commands/get.rb

#
# Copyright 2010 The Apache Software Foundation
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#     http://www.apache.org/licenses/LICENSE-2.0
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module Shell
  module Commands
    class Get < Command
      def help
        return <<-EOF
Get row or cell contents; pass table name, row, and optionally
a dictionary of column(s), timestamp and versions. Examples:

  hbase> get 't1', 'r1'
  hbase> get 't1', 'r1', {COLUMN => 'c1'}
  hbase> get 't1', 'r1', {COLUMN => ['c1', 'c2', 'c3']}
  hbase> get 't1', 'r1', {COLUMN => 'c1', TIMESTAMP => ts1}
  hbase> get 't1', 'r1', {COLUMN => 'c1', TIMESTAMP => ts1, VERSIONS => 4}
  hbase> get 't1', 'r1', 'c1'
  hbase> get 't1', 'r1', 'c1', 'c2'
  hbase> get 't1', 'r1', ['c1', 'c2']
EOF
      end

      def command(table, row, *args)
        now = Time.now
        formatter.header(["COLUMN", "CELL"])

        table(table).get(row, *args) do |column, value|
          formatter.row([ column, value ])
        end

        formatter.footer(now)
      end
    end
  end
end