An abstract base class for encapsulating various kinds of query results.

Subversion Id

 $Id$

Authors

• Michael Granger

Copyright © 2008-2009, Michael Granger All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

• Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
• Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
• Neither the name of the author/s, nor the names of the project’s contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

   Redleaf::QueryResult.formatters
   # => {
     "xml" => {
       :uri => #<URI::HTTP:0x197648 URL:http://www.w3.org/2005/sparql-results#>,
       :label => "SPARQL Query Results Format 2007-06-14",
       :mimetype => "application/sparql-results+xml"
     },
     "json" => {
       :uri => #<URI::HTTP:0x1973fa URL:http://www.w3.org/2001/sw/DataAccess/json-sparql/>,
       :label => "JSON",
       :mimetype => "text/json"
     }
   }

static VALUE
rleaf_redleaf_queryresult_s_formatters( VALUE klass ) 

    # File lib/redleaf/queryresult.rb, line 36
36:     def initialize( graph )
37:         @source_graph = graph
38:     end

static VALUE
rleaf_redleaf_queryresult_each( VALUE self ) 

   formaturi = Redleaf::QueryResult.formatters['json'][:uri]
   result.formatted_as( formaturi )
   # => ...

static VALUE
rleaf_redleaf_queryresult_formatted_as( VALUE self, VALUE format ) 

    # File lib/redleaf/queryresult.rb, line 68
68:     def method_missing( sym, *args )
69:         super unless sym.to_s =~ /^to_(\w+)$/
70: 
71:         format = $1
72:         formatters = self.class.formatters
73:         unless formatters.key?( format )
74:             raise Redleaf::FeatureError,
75:                 "local Redland installation does not have a '%s' formatter"
76:         end
77: 
78:         return self.formatted_as( formatters[format][:uri] )
79:     end

    # File lib/redleaf/queryresult.rb, line 51
51:     def to_json
52:         json = self.formatted_as( self.class.formatters['json'][:uri] )
53: 
54:         # Work around the doubled-quotes bug
55:         return json.gsub( %r{""(ordered|distinct)}, %{"\\1} )
56:     end

    # File lib/redleaf/queryresult.rb, line 61
61:     def to_xml
62:         return self.formatted_as( self.class.formatters['xml'][:uri] )
63:     end