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@ -1,3 +1,4 @@ |
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use model::vocab::xsd; |
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use sparql::algebra::*; |
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use store::numeric_encoder::EncodedTerm; |
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use store::store::EncodedQuadsStore; |
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@ -136,6 +137,13 @@ pub enum PlanExpression { |
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Box<PlanExpression>, |
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Option<Box<PlanExpression>>, |
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), |
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BooleanCast(Box<PlanExpression>), |
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DoubleCast(Box<PlanExpression>), |
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FloatCast(Box<PlanExpression>), |
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DecimalCast(Box<PlanExpression>), |
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IntegerCast(Box<PlanExpression>), |
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DateTimeCast(Box<PlanExpression>), |
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StringCast(Box<PlanExpression>), |
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} |
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pub struct PlanBuilder<'a, S: EncodedQuadsStore> { |
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@ -370,10 +378,63 @@ impl<'a, S: EncodedQuadsStore> PlanBuilder<'a, S> { |
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None => None, |
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}, |
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), |
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Expression::CustomFunctionCall(name, parameters) => if *name == *xsd::BOOLEAN { |
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self.build_cast( |
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parameters, |
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PlanExpression::BooleanCast, |
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variables, |
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"boolean", |
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)? |
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} else if *name == *xsd::DOUBLE { |
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self.build_cast(parameters, PlanExpression::DoubleCast, variables, "double")? |
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} else if *name == *xsd::FLOAT { |
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self.build_cast(parameters, PlanExpression::FloatCast, variables, "float")? |
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} else if *name == *xsd::DECIMAL { |
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self.build_cast( |
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parameters, |
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PlanExpression::DecimalCast, |
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variables, |
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"decimal", |
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)? |
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} else if *name == *xsd::INTEGER { |
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self.build_cast( |
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parameters, |
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PlanExpression::IntegerCast, |
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variables, |
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"integer", |
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)? |
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} else if *name == *xsd::DATE_TIME { |
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self.build_cast( |
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parameters, |
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PlanExpression::DateTimeCast, |
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variables, |
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"dateTime", |
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)? |
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} else if *name == *xsd::STRING { |
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self.build_cast(parameters, PlanExpression::StringCast, variables, "string")? |
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} else { |
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Err(format!("Not supported custom function {}", expression))? |
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}, |
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_ => unimplemented!(), |
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}) |
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} |
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fn build_cast( |
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&self, |
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parameters: &Vec<Expression>, |
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constructor: impl Fn(Box<PlanExpression>) -> PlanExpression, |
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variables: &mut Vec<Variable>, |
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name: &'static str, |
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) -> Result<PlanExpression> { |
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if parameters.len() == 1 { |
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Ok(constructor(Box::new( |
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self.build_for_expression(¶meters[0], variables)?, |
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))) |
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} else { |
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Err(format!("The xsd:{} casting takes only one parameter", name).into()) |
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} |
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} |
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fn pattern_value_from_term_or_variable( |
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&self, |
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term_or_variable: &TermOrVariable, |
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