#include <expression.h>
Inheritance diagram for graphar::ExpressionLiteral< T, IsScalar, typename >:
Public Member Functions | |
| ExpressionLiteral (T value) | |
| ExpressionLiteral (const ExpressionLiteral &other)=default | |
| Result< ArrowExpression > | Evaluate () |
| Evaluate Expression as arrow::compute::Expression e.g. new ExpressionEqual(new ExpressionProperty("a"), new ExpressionLiteral(1)) will be parsed as arrow::compute::equal(arrow::compute::field_ref("a"), arrow::compute::literal(1)) More... | |
 Public Member Functions inherited from graphar::Expression | |
| Expression (const Expression &other)=default | |
Detailed Description
template<typename T, bool IsScalar = std::is_same_v<T, bool> || std::is_same_v<T, int32_t> || std::is_same_v<T, int64_t> || std::is_same_v<T, float> || std::is_same_v<T, double> || std::is_same_v<T, std::string> || std::is_same_v<T, const char*> || std::is_same_v<T, const char* const>, typename = std::enable_if_t<IsScalar>>
class graphar::ExpressionLiteral< T, IsScalar, typename >
This class wraps the literal. Only bool, int32, int64, float, double and string are allowed.
Definition at line 85 of file expression.h.
Member Function Documentation
◆ Evaluate()
template<typename T , bool IsScalar = std::is_same_v<T, bool> || std::is_same_v<T, int32_t> || std::is_same_v<T, int64_t> || std::is_same_v<T, float> || std::is_same_v<T, double> || std::is_same_v<T, std::string> || std::is_same_v<T, const char*> || std::is_same_v<T, const char* const>, typename = std::enable_if_t<IsScalar>>
|
inlinevirtual |
Evaluate Expression as arrow::compute::Expression e.g. new ExpressionEqual(new ExpressionProperty("a"), new ExpressionLiteral(1)) will be parsed as arrow::compute::equal(arrow::compute::field_ref("a"), arrow::compute::literal(1))
- Returns
- The arrow::compute::Expression instance
Implements graphar::Expression.
Definition at line 91 of file expression.h.
The documentation for this class was generated from the following file:
- src/graphar/expression.h