Module io.github.romanhaendler.rbed

Package io.github.romanhaendler.rbed

Class Expression

java.lang.Object

io.github.romanhaendler.rbed.Expression

Direct Known Subclasses:

ChannelExpression, EventCount

public abstract class Expression
extends Object

A numeric value derived from the current Sample; undefined while the data it needs is not available. A Channel is one; others derive from it or come from Conditions.

Method Summary

Modifier and Type	Method	Description
Condition	above(double limit)	True when this value is strictly greater than limit.
Condition	above(Expression other)	True when this value is strictly greater than other.
Expression	abs()	The absolute value.
Condition	below(double limit)	True when this value is strictly less than limit.
Condition	below(Expression other)	True when this value is strictly less than other.
Condition	between(double low, double high)	True when low <= value <= high.
Expression	dividedBy(double c)	This value divided by c; undefined when c is 0.
Expression	dividedBy(Expression other)	This value divided by other; undefined when other is 0.
Expression	minus(double c)	This value minus c.
Expression	minus(Expression other)	This value minus other.
Expression	plus(double c)	This value plus c.
Expression	plus(Expression other)	This value plus other.
Expression	times(double c)	This value times c.
Expression	times(Expression other)	This value times other.
String	toString()	How this Expression is written in Java, such as temp.averageOverSamples(5), temp.minus(5.0) or count(Run).within(60000): a Channel and a Rule by their names, a constant as a double (plus(5) reads plus(5.0)), a duration in milliseconds (also when given as a Duration).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Details

above

public Condition above(double limit)

True when this value is strictly greater than limit.

above

public Condition above(Expression other)

True when this value is strictly greater than other.

below

public Condition below(double limit)

True when this value is strictly less than limit.

below

public Condition below(Expression other)

True when this value is strictly less than other.

between

public Condition between(double low,
 double high)

True when low <= value <= high.

plus

public Expression plus(Expression other)

This value plus other.

plus

public Expression plus(double c)

This value plus c.

minus

public Expression minus(Expression other)

This value minus other.

minus

public Expression minus(double c)

This value minus c.

times

public Expression times(Expression other)

This value times other.

times

public Expression times(double c)

This value times c.

dividedBy

public Expression dividedBy(Expression other)

This value divided by other; undefined when other is 0.

dividedBy

public Expression dividedBy(double c)

This value divided by c; undefined when c is 0.

abs

public Expression abs()

The absolute value.

toString

public String toString()

How this Expression is written in Java, such as temp.averageOverSamples(5), temp.minus(5.0) or count(Run).within(60000): a Channel and a Rule by their names, a constant as a double (plus(5) reads plus(5.0)), a duration in milliseconds (also when given as a Duration). Error messages use it to name the Expression. Names are printed as they are, so two different Expressions can print alike (a Channel named x.abs() and x.abs() on Channel x); the Snapshot fingerprint therefore does not use this text.

Overrides:

toString in class Object