RDF::Query::Expression(3)
Class for Expr expressions
VERSION
This document describes RDF::Query::Expression version 2.916.
METHODS
- "new ( $op, @operands )"
-
Returns a new Expr structure.
- "construct_args"
-
Returns a list of arguments that, passed to this class' constructor,
will produce a clone of this algebra pattern.
- "op"
-
Returns the operator of the expression.
- "operands"
-
Returns a list of the operands of the expression.
- "sse"
-
Returns the SSE string for this algebra expression.
- "explain"
-
Returns a string serialization of the expression appropriate for display on the
command line. This method is primarily used by the "explain" method of
the subclasses of RDF::Query::Plan.
- "as_hash"
-
Returns the expression as a nested set of plain data structures (no objects).
- "type"
-
Returns the type of this algebra expression.
- "referenced_variables"
-
Returns a list of the variable names used in this algebra expression.
- "nonaggregated_referenced_variables"
-
Returns a list of the variable names used in this algebra expression except
those used as aliases for aggregate operations.
