Module: Groonga::ExpressionBuildable

Included in:
ColumnExpressionBuilder, RecordExpressionBuilder
Defined in:
lib/groonga/expression-builder.rb

Overview

:nodoc:

Defined Under Namespace

Classes: AndExpressionBuilder, BinaryExpressionBuilder, EqualExpressionBuilder, ExpressionBuilder, GreaterEqualExpressionBuilder, GreaterExpressionBuilder, LessEqualExpressionBuilder, LessExpressionBuilder, MatchExpressionBuilder, OrExpressionBuilder, SetExpressionBuilder, SubExpressionBuilder

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#allow_column ⇒ Object

Returns the value of attribute allow_column.



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# File 'lib/groonga/expression-builder.rb', line 24

def allow_column
  @allow_column
end

#allow_pragma ⇒ Object

Returns the value of attribute allow_pragma.



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# File 'lib/groonga/expression-builder.rb', line 23

def allow_pragma
  @allow_pragma
end

#allow_update ⇒ Object

Returns the value of attribute allow_update.



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# File 'lib/groonga/expression-builder.rb', line 25

def allow_update
  @allow_update
end

#default_column ⇒ Object

Returns the value of attribute default_column.



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# File 'lib/groonga/expression-builder.rb', line 26

def default_column
  @default_column
end

#query ⇒ Object

Returns the value of attribute query.



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# File 'lib/groonga/expression-builder.rb', line 21

def query
  @query
end

#syntax ⇒ Object

Returns the value of attribute syntax.



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# File 'lib/groonga/expression-builder.rb', line 22

def syntax
  @syntax
end

#table ⇒ Object (readonly)

Returns the value of attribute table.



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# File 'lib/groonga/expression-builder.rb', line 20

def table
  @table
end

Instance Method Details

#&(other) ⇒ Object 



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# File 'lib/groonga/expression-builder.rb', line 64

def &(other)
  other
end

#build ⇒ Object 



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# File 'lib/groonga/expression-builder.rb', line 39

def build
  expression = Expression.new(:name => @name)
  variable = expression.define_variable(:domain => @table)

  builder = nil
  builder = match(@query, default_parse_options) if @query
  if block_given?
    if builder
      builder &= yield(self)
    else
      builder = yield(self)
    end
  end
  if builder.nil? or builder == self
    expression.append_constant(1)
    expression.append_constant(1)
    expression.append_operation(Groonga::Operation::OR, 2)
  else
    builder.build(expression, variable)
  end

  expression.compile
  expression
end

#initialize(*args) ⇒ Object 



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# File 'lib/groonga/expression-builder.rb', line 28

def initialize(*args)
  @table = nil
  @name = nil
  @query = nil
  @syntax = nil
  @allow_pragma = nil
  @allow_column = nil
  @allow_update = nil
  @default_column = nil
end

#|(other) ⇒ Object 



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# File 'lib/groonga/expression-builder.rb', line 68

def |(other)
  other
end