Class: HBase::Table::Mutation
- Inherits:
-
Object
- Object
- HBase::Table::Mutation
- Includes:
- Util
- Defined in:
- lib/hbase-jruby/table/mutation.rb
Overview
Generate single-row mutation objects
Defined Under Namespace
Classes: Mutator
Constant Summary
Constants included from Util
Util::JAVA_BYTE_ARRAY_CLASS, Util::JAVA_BYTE_ARRAY_EMPTY
Instance Method Summary collapse
- #append(rowkey, spec) ⇒ Object
- #delete(rowkey, *extra) ⇒ Object
- #increment(rowkey, *spec) ⇒ Object
-
#initialize(table) ⇒ Mutation
constructor
A new instance of Mutation.
- #mutate(rowkey) {|rm| ... } ⇒ Object
- #put(rowkey, props, timestamp = nil) ⇒ Object
Methods included from Util
append_0, from_bytes, java_bytes?, parse_column_name, to_bytes, to_typed_bytes
Constructor Details
#initialize(table) ⇒ Mutation
Returns a new instance of Mutation.
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# File 'lib/hbase-jruby/table/mutation.rb', line 7 def initialize table @table = table end |
Instance Method Details
#append(rowkey, spec) ⇒ Object
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# File 'lib/hbase-jruby/table/mutation.rb', line 99 def append rowkey, spec Append.new(Util.to_bytes rowkey).tap { |apnd| spec.each do |col, val| cf, cq, _ = @table.lookup_and_parse col, true apnd.add(cf, cq, Util.to_bytes(val)) end } end |
#delete(rowkey, *extra) ⇒ Object
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# File 'lib/hbase-jruby/table/mutation.rb', line 48 def delete rowkey, *extra Delete.new(Util.to_bytes rowkey).tap { |del| cf = cq = nil prcd = false prc = lambda do unless prcd if cq # Delete all versions del.deleteColumns cf, cq elsif cf del.deleteFamily cf end end end extra.each do |x| case x when Fixnum, Time if cq del.deleteColumn cf, cq, time_to_long(x) prcd = true else raise ArgumentError, 'qualifier not given' end else prc.call cf, cq, _ = @table.lookup_and_parse x, false prcd = false end end prc.call } end |
#increment(rowkey, *spec) ⇒ Object
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# File 'lib/hbase-jruby/table/mutation.rb', line 83 def increment rowkey, *spec if spec.first.is_a?(Hash) spec = spec.first else c, b = spec spec = { c => (b || 1) } end Increment.new(Util.to_bytes rowkey).tap { |inc| spec.each do |col, by| cf, cq, _ = @table.lookup_and_parse col, true inc.addColumn cf, cq, by end } end |
#mutate(rowkey) {|rm| ... } ⇒ Object
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# File 'lib/hbase-jruby/table/mutation.rb', line 108 def mutate rowkey rm = Mutator.new(self, rowkey) yield rm org.apache.hadoop.hbase.client.RowMutations.new(Util.to_bytes rowkey).tap { |m| rm.mutations.each do |action| m.add action end } unless rm.empty? end |
#put(rowkey, props, timestamp = nil) ⇒ Object
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# File 'lib/hbase-jruby/table/mutation.rb', line 11 def put rowkey, props, = nil Put.new(Util.to_bytes rowkey).tap { |put| props.each do |col, val| next if val.nil? cf, cq, type = @table.lookup_and_parse col, true case val when Hash val.each do |t, v| case t # Timestamp / Ruby Time when Time, Fixnum put.add cf, cq, time_to_long(t), Util.to_typed_bytes(type, v) # Types: :byte, :short, :int, ... else put.add cf, cq, Util.to_typed_bytes(t, v) end unless v.nil? end when String if put.add cf, cq, time_to_long(), val.to_java_bytes else put.add cf, cq, val.to_java_bytes end else if put.add cf, cq, time_to_long(), Util.to_typed_bytes(type, val) else put.add cf, cq, Util.to_typed_bytes(type, val) end end end raise ArgumentError, "no column to put" if put.empty? } end |