Package dev.morphia.aggregation.expressions

Class BooleanExpressions

java.lang.Object

dev.morphia.aggregation.expressions.BooleanExpressions

public final class BooleanExpressions
extends Object

Defines helper methods for the boolean expressions

Since:

2.0

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	BooleanExpressions.LogicalExpression	Defines a logical expression.

Method Summary

Modifier and Type	Method	Description
static BooleanExpressions.LogicalExpression	and()	Evaluates one or more expressions and returns true if all the expressions are true or if evoked with no argument expressions.
static BooleanExpressions.LogicalExpression	and(dev.morphia.aggregation.expressions.impls.Expression first, dev.morphia.aggregation.expressions.impls.Expression... additional)	Evaluates one or more expressions and returns true if all the expressions are true or if evoked with no argument expressions.
static dev.morphia.aggregation.expressions.impls.Expression	not(dev.morphia.aggregation.expressions.impls.Expression value)	Evaluates a boolean and returns the opposite boolean value; i.e. when passed an expression that evaluates to true, $not returns false; when passed an expression that evaluates to false, $not returns true.
static BooleanExpressions.LogicalExpression	or()	Evaluates one or more expressions and returns true if any of the expressions are true.
static BooleanExpressions.LogicalExpression	or(dev.morphia.aggregation.expressions.impls.Expression first, dev.morphia.aggregation.expressions.impls.Expression... additional)	Evaluates one or more expressions and returns true if any of the expressions are true.

Methods inherited from class java.lang.Object

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

Method Detail

and

public static BooleanExpressions.LogicalExpression and(dev.morphia.aggregation.expressions.impls.Expression first,
                                                       dev.morphia.aggregation.expressions.impls.Expression... additional)

Evaluates one or more expressions and returns true if all the expressions are true or if evoked with no argument expressions. Otherwise, $and returns false.

Parameters:

first - the first expression

additional - any additional expressions

Returns:

the new expression

MongoDB documentation

Aggregration Expression: $and

and

public static BooleanExpressions.LogicalExpression and()

Evaluates one or more expressions and returns true if all the expressions are true or if evoked with no argument expressions. Otherwise, $and returns false.

Returns:

the new expression

Since:

2.3

MongoDB documentation

Aggregration Expression: $and

not

public static dev.morphia.aggregation.expressions.impls.Expression not(dev.morphia.aggregation.expressions.impls.Expression value)

Evaluates a boolean and returns the opposite boolean value; i.e. when passed an expression that evaluates to true, $not returns false; when passed an expression that evaluates to false, $not returns true.

Parameters:

value - the expression

Returns:

the new expression

MongoDB documentation

Aggregration Expression: $not

or

public static BooleanExpressions.LogicalExpression or(dev.morphia.aggregation.expressions.impls.Expression first,
                                                      dev.morphia.aggregation.expressions.impls.Expression... additional)

Evaluates one or more expressions and returns true if any of the expressions are true. Otherwise, $or returns false.

Parameters:

first - the first expression

additional - any additional expressions

Returns:

the new expression

MongoDB documentation

Aggregration Expression: $or

or

public static BooleanExpressions.LogicalExpression or()

Evaluates one or more expressions and returns true if any of the expressions are true. Otherwise, $or returns false.

Returns:

the new expression

Since:

2.3

MongoDB documentation

Aggregration Expression: $or