mirror of
https://github.com/cookiengineer/audacity
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173 lines
2.7 KiB
Plaintext
173 lines
2.7 KiB
Plaintext
<!-- ##### SECTION Title ##### -->
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Graph patterns
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<!-- ##### SECTION Short_Description ##### -->
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Collections of triple patterns, sub-graph patterns with operators.
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<!-- ##### SECTION Long_Description ##### -->
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<para>
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Graph patterns form a a tree structure that build a #rasqal_query
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top-level graph pattern (see rasqal_query_get_query_graph_pattern())
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which may have sub-graph patterns. Graph patterns at the leaf of the
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tree operate over triple patterns (#rasqal_triple) matching the
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RDF triples in the data sources for %RASQAL_GRAPH_PATTERN_OPERATOR_BASIC
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or %RASQAL_GRAPH_PATTERN_OPERATOR_OPTIONAL. Other graph patterns
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operators operate over sub graph patterns and group them, union them
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or apply a GRAPH matching keyword (%RASQAL_GRAPH_PATTERN_OPERATOR_GRAPH).
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</para>
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<!-- ##### SECTION See_Also ##### -->
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<para>
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</para>
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<!-- ##### SECTION Stability_Level ##### -->
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<!-- ##### TYPEDEF rasqal_graph_pattern ##### -->
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<para>
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</para>
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<!-- ##### FUNCTION rasqal_graph_pattern_add_constraint ##### -->
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<para>
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</para>
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@gp:
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@expr:
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@Returns:
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<!-- ##### FUNCTION rasqal_graph_pattern_add_sub_graph_pattern ##### -->
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<para>
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</para>
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@graph_pattern:
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@sub_graph_pattern:
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@Returns:
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<!-- ##### FUNCTION rasqal_graph_pattern_get_constraint ##### -->
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<para>
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</para>
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@gp:
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@idx:
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@Returns:
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<!-- ##### FUNCTION rasqal_graph_pattern_get_constraint_sequence ##### -->
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<para>
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</para>
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@gp:
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@Returns:
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<!-- ##### FUNCTION rasqal_graph_pattern_get_index ##### -->
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<para>
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</para>
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@gp:
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@Returns:
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<!-- ##### FUNCTION rasqal_graph_pattern_get_operator ##### -->
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<para>
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</para>
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@graph_pattern:
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@Returns:
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<!-- ##### FUNCTION rasqal_graph_pattern_get_sub_graph_pattern ##### -->
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<para>
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</para>
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@graph_pattern:
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@idx:
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@Returns:
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<!-- ##### FUNCTION rasqal_graph_pattern_get_sub_graph_pattern_sequence ##### -->
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<para>
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</para>
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@graph_pattern:
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@Returns:
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<!-- ##### FUNCTION rasqal_graph_pattern_get_triple ##### -->
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<para>
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</para>
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@graph_pattern:
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@idx:
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@Returns:
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<!-- ##### ENUM rasqal_graph_pattern_operator ##### -->
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<para>
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</para>
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@RASQAL_GRAPH_PATTERN_OPERATOR_UNKNOWN:
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@RASQAL_GRAPH_PATTERN_OPERATOR_BASIC:
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@RASQAL_GRAPH_PATTERN_OPERATOR_OPTIONAL:
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@RASQAL_GRAPH_PATTERN_OPERATOR_UNION:
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@RASQAL_GRAPH_PATTERN_OPERATOR_GROUP:
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@RASQAL_GRAPH_PATTERN_OPERATOR_GRAPH:
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@RASQAL_GRAPH_PATTERN_OPERATOR_LAST:
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<!-- ##### FUNCTION rasqal_graph_pattern_operator_as_string ##### -->
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<para>
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</para>
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@op:
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@Returns:
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<!-- ##### FUNCTION rasqal_graph_pattern_print ##### -->
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<para>
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</para>
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@gp:
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@fh:
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<!-- ##### USER_FUNCTION rasqal_graph_pattern_visit_fn ##### -->
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<para>
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</para>
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@query:
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@gp:
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@user_data:
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@Returns:
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<!-- ##### FUNCTION rasqal_graph_pattern_visit ##### -->
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<para>
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</para>
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@query:
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@gp:
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@fn:
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@user_data:
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@Returns:
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