Module: RDF::SPARQL::Common

Included in:
Reader, Writer
Defined in:
lib/lib/common.rb

Instance Method Summary collapse

Instance Method Details

#distinct? ⇒ Boolean

Check whether ‘distinct` flag was specified

Returns:

  • (Boolean) 


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# File 'lib/lib/common.rb', line 92

def distinct?
  @options[:distinct] == true
end

#each_statement {|statement| ... } ⇒ Reader

Yields each statement of SPARQL query

Yields:

  • (statement)

Yield Parameters:

  • (Statement)

Returns:



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# File 'lib/lib/common.rb', line 11

def each_statement(&block)
  @graph.each_statement { |statement| block.call(statement) }
  self
end

#each_target {|variable| ... } ⇒ Reader

Yields each target variable in SPARQL query

Yields:

  • (variable)

Yield Parameters:

  • (Variable)

Returns:



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# File 'lib/lib/common.rb', line 33

def each_target(&block)
  @targets.each { |target| block.call(target) }
  self
end

#each_triple {|triple| ... } ⇒ Reader

Yields each triple of SPARQL query

Yields:

  • (triple)

Yield Parameters:

  • (Array(Value))

Returns:



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# File 'lib/lib/common.rb', line 22

def each_triple(&block)
  @graph.each_triple { |*triple| block.call(*triple) }
  self
end

#each_variable {|variable| ... } ⇒ Reader

Yields each variable in SPARQL query

Yields:

  • (variable)

Yield Parameters:

  • (Variable)

Returns:



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# File 'lib/lib/common.rb', line 44

def each_variable(&block)
  variables.each { |variable| block.call(variable) }
  self
end

#reduced? ⇒ Boolean

Check whether ‘reduced` flag was specified

Returns:

  • (Boolean) 


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# File 'lib/lib/common.rb', line 100

def reduced?
  @options[:reduced] == true
end

#statements ⇒ Object

- 


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# File 'lib/lib/common.rb', line 59

def statements
  @graph.statements
end

#targets ⇒ Object

- 


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# File 'lib/lib/common.rb', line 52

def targets
  @targets
end

#triples ⇒ Object

- 


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# File 'lib/lib/common.rb', line 66

def triples
  @graph.triples
end

#type ⇒ Object

- 


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# File 'lib/lib/common.rb', line 84

def type
  @type || @options[:type]
end

#variables ⇒ Object

- 


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# File 'lib/lib/common.rb', line 73

def variables
  Hash[@graph.map { |pattern|
    pattern.variables.values
  }.flatten.uniq.map { |variable|
    [variable.name, variable]
  }]
end