Uses of Class
edu.caltech.nanodb.expressions.Environment

Packages that use Environment

Package	Description
edu.caltech.nanodb.commands	This package contains the classes that represent the commands that the NanoSQL database recognizes.
edu.caltech.nanodb.expressions	This package contains classes for representing and evaluating arithmetic and logical expressions.
edu.caltech.nanodb.functions	This package contains the abstractions for supporting simple functions, aggregate functions, and table-returning functions in NanoDB.
edu.caltech.nanodb.plannodes	This package contains classes for representing query execution plans, as well as analyzing their costs.

Uses of Environment in edu.caltech.nanodb.commands

Fields in edu.caltech.nanodb.commands declared as Environment

Modifier and Type	Field	Description
private Environment	UpdateCommand.TupleUpdater.environment	The environment used to evaluate the update expressions.

Uses of Environment in edu.caltech.nanodb.expressions

Fields in edu.caltech.nanodb.expressions declared as Environment

Modifier and Type	Field	Description
private Environment	TupleComparator.envTupleA	The environment to use for evaluating order-by expressions against the first tuple.
private Environment	TupleComparator.envTupleB	The environment to use for evaluating order-by expressions against the second tuple.

Fields in edu.caltech.nanodb.expressions with type parameters of type Environment

Modifier and Type	Field	Description
private java.util.ArrayList<Environment>	Environment.parents	In the case of correlated evaluation, this field holds parent environments that can be used to resolve symbol names into values.

Methods in edu.caltech.nanodb.expressions with parameters of type Environment

Modifier and Type	Method	Description
void	Environment.addParentEnvironment(Environment env)
java.lang.Object	ArithmeticOperator.evaluate(Environment env)
java.lang.Object	BooleanOperator.evaluate(Environment env)
java.lang.Object	ColumnValue.evaluate(Environment env)
java.lang.Object	CompareOperator.evaluate(Environment env)	Evaluates this comparison expression and returns either Boolean.TRUE or Boolean.FALSE.
java.lang.Object	ExistsOperator.evaluate(Environment env)
abstract java.lang.Object	Expression.evaluate(Environment env)	Evaluates this expression object in the context of the specified environment.
java.lang.Object	FunctionCall.evaluate(Environment env)
java.lang.Object	InSubqueryOperator.evaluate(Environment env)	Evaluates this comparison expression and returns either Boolean.TRUE or Boolean.FALSE.
java.lang.Object	InValuesOperator.evaluate(Environment env)	Evaluates this comparison expression and returns either Boolean.TRUE or Boolean.FALSE.
java.lang.Object	IsNullOperator.evaluate(Environment env)
java.lang.Object	LiteralValue.evaluate(Environment env)	For literal values, evaluation simply involves returning the literal value.
java.lang.Object	NegateOperator.evaluate(Environment env)
java.lang.Object	ScalarSubquery.evaluate(Environment env)
java.lang.Object	StringMatchOperator.evaluate(Environment env)	Evaluates this comparison expression and returns either Boolean.TRUE or Boolean.FALSE.
boolean	Expression.evaluatePredicate(Environment env)	Evaluates an expression as a Boolean predicate.

Uses of Environment in edu.caltech.nanodb.functions

Methods in edu.caltech.nanodb.functions with parameters of type Environment

Modifier and Type	Method	Description
java.lang.Object	Abs.evaluate(Environment env, java.util.List<Expression> args)
java.lang.Object	ArcCos.evaluate(Environment env, java.util.List<Expression> args)
java.lang.Object	ArcSin.evaluate(Environment env, java.util.List<Expression> args)
java.lang.Object	ArcTan.evaluate(Environment env, java.util.List<Expression> args)
java.lang.Object	ArcTan2.evaluate(Environment env, java.util.List<Expression> args)
java.lang.Object	Ceil.evaluate(Environment env, java.util.List<Expression> args)
java.lang.Object	Coalesce.evaluate(Environment env, java.util.List<Expression> args)
java.lang.Object	Concat.evaluate(Environment env, java.util.List<Expression> args)
java.lang.Object	Cos.evaluate(Environment env, java.util.List<Expression> args)
java.lang.Object	Floor.evaluate(Environment env, java.util.List<Expression> args)
java.lang.Object	Greatest.evaluate(Environment env, java.util.List<Expression> args)
java.lang.Object	If.evaluate(Environment env, java.util.List<Expression> args)
java.lang.Object	IfNull.evaluate(Environment env, java.util.List<Expression> args)
java.lang.Object	Least.evaluate(Environment env, java.util.List<Expression> args)
java.lang.Object	NullIf.evaluate(Environment env, java.util.List<Expression> args)
java.lang.Object	Pow.evaluate(Environment env, java.util.List<Expression> args)
java.lang.Object	ReadPerfCounter.evaluate(Environment env, java.util.List<Expression> args)
java.lang.Object	ResetPerfCounter.evaluate(Environment env, java.util.List<Expression> args)
java.lang.Object	Round.evaluate(Environment env, java.util.List<Expression> args)
abstract java.lang.Object	SimpleFunction.evaluate(Environment env, java.util.List<Expression> args)	Evaluates the function.
java.lang.Object	Sin.evaluate(Environment env, java.util.List<Expression> args)
java.lang.Object	Sqrt.evaluate(Environment env, java.util.List<Expression> args)
java.lang.Object	Tan.evaluate(Environment env, java.util.List<Expression> args)

Uses of Environment in edu.caltech.nanodb.plannodes

Fields in edu.caltech.nanodb.plannodes declared as Environment

Modifier and Type	Field	Description
protected Environment	PlanNode.environment	The environment used to evaluate expressions against tuples being processed.

Methods in edu.caltech.nanodb.plannodes that return Environment

Modifier and Type	Method	Description
Environment	PlanNode.getEnvironment()	Returns the environment that this plan node uses during query evaluation.

Methods in edu.caltech.nanodb.plannodes with parameters of type Environment

Modifier and Type	Method	Description
void	PlanNode.addParentEnvironmentToPlanTree(Environment parentEnv)	This method adds a parent environment to the entire plan tree rooted at this plan node.
void	PlanNode.setEnvironment(Environment env)	Sets the plan node's environment to the specified environment object.