Package io.github.torand.fastersql.predicate

Class Predicates

java.lang.Object

io.github.torand.fastersql.predicate.Predicates

public final class Predicates
extends Object

Provides factory methods for predicates.

Method Summary

Modifier and Type	Method	Description
static ExistsSubquery	exists(ExpressionSubquery operand)	Create an 'existence' (at least one row) predicate taking a subquery as right operand.
static InSubquery	in(LeftOperand left, ExpressionSubquery right)	Create a 'member of set' predicate taking a subquery as right operand.
static In	in(LeftOperand left, Collection<?> right)	Create a 'member of set' predicate taking a collection of scalar values as right operand.
static IsNull	isNull(LeftOperand operand)	Creates an 'is null' predicate.
static Like	like(LeftOperand left, String right)	Creates a pattern matching predicate.

Methods inherited from class java.lang.Object

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

Method Details

in

public static In in(LeftOperand left,
 Collection<?> right)

Create a 'member of set' predicate taking a collection of scalar values as right operand.

Parameters:

left - the left operand.

right - the right operand (scalar value collection).

Returns:

the predicate.

in

public static InSubquery in(LeftOperand left,
 ExpressionSubquery right)

Create a 'member of set' predicate taking a subquery as right operand.

Parameters:

left - the left operand.

right - the right operand (subquery).

Returns:

the predicate.

exists

public static ExistsSubquery exists(ExpressionSubquery operand)

Create an 'existence' (at least one row) predicate taking a subquery as right operand.

Parameters:

operand - the operand (subquery).

Returns:

the predicate.

like

public static Like like(LeftOperand left,
 String right)

Creates a pattern matching predicate.

Parameters:

left - the left operand.

right - the right operand (pattern).

Returns:

the predicate.

isNull

public static IsNull isNull(LeftOperand operand)

Creates an 'is null' predicate.

Parameters:

operand - the operand.

Returns:

the predicate.