RDF::Query::Expression(3)

NAME
RDF::Query::Expression - Class for Expr expressions

VERSION
This document describes RDF::Query::Expression version 2.919.

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.

AUTHOR
 Gregory Todd Williams <gwilliams@cpan.org>