Class: CqlRuby::CqlTermNode

Inherits:
CqlNode
  • Object
show all
Defined in:
lib/cql_ruby/cql_nodes.rb

Overview

Represents a terminal node in a CQL parse-tree. A term node consists of the term String itself, together with, optionally, an index string and a relation. Neither or both of these must be provided - you can’t have an index without a relation or vice versa.

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from CqlNode

#check_xml, #getResultSetName, #render_prefixes, #render_sortkeys

Constructor Details

#initialize(index, relation, term) ⇒ CqlTermNode

Returns a new instance of CqlTermNode.



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# File 'lib/cql_ruby/cql_nodes.rb', line 201

def initialize( index, relation, term )
  super()
  
  @index = index.dup
  @relation = relation.dup
  @term = term.dup
end

Instance Attribute Details

#index ⇒ Object

Returns the value of attribute index.



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# File 'lib/cql_ruby/cql_nodes.rb', line 200

def index
  @index
end

#relation ⇒ Object

Returns the value of attribute relation.



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# File 'lib/cql_ruby/cql_nodes.rb', line 200

def relation
  @relation
end

#term ⇒ Object

Returns the value of attribute term.



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# File 'lib/cql_ruby/cql_nodes.rb', line 200

def term
  @term
end

Instance Method Details

#maybe_quote(s) ⇒ Object 



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# File 'lib/cql_ruby/cql_nodes.rb', line 241

def maybe_quote( s )
  if s == "" || s =~ /[" \t=<>()\/]/
    return "\"#{s.gsub( /"/, "\\\"" )}\""
  end
  s
end

#result_set_index?(qual) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cql_ruby/cql_nodes.rb', line 209

def result_set_index?( qual )
  /(srw|cql).resultSet(|Id|Name|SetName)/ =~ qual
end

#result_set_name ⇒ Object 



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# File 'lib/cql_ruby/cql_nodes.rb', line 213

def result_set_name
  return term if result_set_index?( @index )
  nil
end

#to_cql ⇒ Object 



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# File 'lib/cql_ruby/cql_nodes.rb', line 230

def to_cql
  quoted_index = maybe_quote( @index )
  quoted_term = maybe_quote( @term )
  res = quoted_term
  
  if @index && /(srw|cql)\.serverChoice/i !~ @index
    res = "#{quoted_index} #{@relation.to_cql} #{quoted_term}"
  end
  res
end

#to_xcql(xml = nil, prefixes = nil, sortkeys = nil) ⇒ Object 



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# File 'lib/cql_ruby/cql_nodes.rb', line 218

def to_xcql( xml=nil, prefixes=nil, sortkeys=nil )
  xml = check_xml( xml )
  
  xml.searchClause do
    render_prefixes( xml, prefixes )
    xml.index( @index )
    @relation.to_xcql( xml )
    xml.term( @term )
    render_sortkeys( xml, sortkeys )
  end
end