Package stream.nebula.expression

Interface Summary

Interface	Description
ArithmeticExpression	Represents the operands or the result of an arithmetic operation, such as unary/binary operators and/or functions.
Expression	Base interface for expressions that can be used in the fluid query API, i.e., inside Query.filter(stream.nebula.expression.LogicalExpression) and Query.map(java.lang.String, stream.nebula.expression.Expression).
FieldExpression	Marker interface to represent a projected attribute used in Query.project(stream.nebula.expression.FieldExpression...).
LogicalExpression	Represents the results of a comparison or logical function, or the arguments of a logical function.

Class Summary

Class	Description
BinaryArithmeticFunctionExpression	Arithmetic expression representing an arithmetic function with two arguments, e.g., BinaryArithmeticFunction.POWER.
BinaryArithmeticOperatorExpression	Arithmetic expression representing a binary arithmetic operator, e.g., BinaryArithmeticOperator.ADDITION.
BinaryComparisonOperatorExpression	Logical expression representing a binary comparison, e.g., BinaryComparisonOperator.LESS_THAN.
BinaryExpression<BinaryOperation,ValueType>	Base type for binary expressions, e.g., binary arithmetic or comparison operators, as well as arithmetic and logical functions with two arguments.
BinaryLogicalOperatorExpression	Logical expression representing a binary logical operator, e.g., BinaryLogicalOperator.OR.
BooleanLiteralExpression	A logical expression representing a literal boolean value.
Expressions	This class contains static functions to access attributes, create boolean and number literals, and create arithmetic and logical functions, e.g., Expressions.abs(stream.nebula.expression.ArithmeticExpression) and Expressions.not(stream.nebula.expression.LogicalExpression).
FieldAccessExpression	Represent the access to a named stream attribute.
NumberLiteralExpression	A logical expression representing a literal numeric value.
TypedFieldExpression	Represents a typed attribute.
UnaryArithmeticFunctionExpression	Arithmetic expression representing a unary function, e.g., UnaryArithmeticFunction.ABS.
UnaryExpression<UnaryOperation,ValueType>	Base type for unary expressions, e.g., arithmetic or logical functions with one argument
UnaryLogicalOperatorExpression	Logical expression representing a unary function, e.g., UnaryLogicalOperator.NOT.

Enum Summary

Enum	Description
BasicType	Enumeration of attribute field types.
BinaryArithmeticFunction	Valid arithmetic functions with two arguments.
BinaryArithmeticOperator	Valid binary arithmetic operators, e.g., BinaryArithmeticOperator.ADDITION.
BinaryComparisonOperator	Valid logical comparison operators, e.g., a BinaryComparisonOperator.LESS_THAN comparison.
BinaryLogicalOperator	Valid binary logical operations, e.g., BinaryLogicalOperator.AND.
UnaryArithmeticFunction	Valid unary arithmetic functions, e.g., UnaryArithmeticFunction.ABS.
UnaryLogicalOperator	Valid unary logical operators.