Class InfixOperation

java.lang.Object

org.springframework.data.relational.core.sql.InfixOperation

All Implemented Interfaces:

Expression, Segment, Visitable

public class InfixOperation
extends Object
implements Expression

Represents an infix (two expressions combined with an operator) operation between two Expressions such as arithmetic operations a + b or concatenation a || b.

Results in a rendered expression: <left> <operator> <right> (e.g. col + 4). For conditional expressions use Comparison instead of a raw InfixOperation.

Since:

4.1.1

Author:

Jens Schauder, Mark Paluch

See Also:

• Comparison

Method Summary

Modifier and Type	Method	Description
InfixOperation	as(String alias)	Creates a new InfixOperation aliased to alias.
InfixOperation	as(SqlIdentifier alias)	Creates a new InfixOperation aliased to alias.
static InfixOperation	create(Expression left, String operator, Expression right)	Create a new InfixOperation using Expressions and an operator.
boolean	equals(@Nullable Object obj)	Check whether this Segment is equal to another Segment.
Expression	getLeft()
String	getOperator()
Expression	getRight()
int	hashCode()	Generate a hash code from thisSegment.
String	toString()	Return a SQL string representation of this Segment.
void	visit(Visitor visitor)	Accept a Visitor visiting this Visitable and its nested Visitables if applicable.

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface Segment

equals, hashCode

Methods inherited from interface Visitable

visit

Method Details

create

public static InfixOperation create(Expression left,
 String operator,
 Expression right)

Create a new InfixOperation using Expressions and an operator.

Parameters:

left - the left Expression.

operator - the operator.

right - the right Expression.

Returns:

the InfixOperation operation.

getLeft

public Expression getLeft()

getOperator

public String getOperator()

getRight

public Expression getRight()

as

public InfixOperation as(String alias)

Creates a new InfixOperation aliased to alias.

Parameters:

alias - must not be null or empty.

Returns:

the new InfixOperation using the alias.

Since:

4.1.1

as

public InfixOperation as(SqlIdentifier alias)

Creates a new InfixOperation aliased to alias.

Parameters:

alias - must not be null or empty.

Returns:

the new InfixOperation using the alias.

Since:

4.1.1

toString

public String toString()

Description copied from interface: Segment

Return a SQL string representation of this Segment.

The representation is intended for debugging purposes and an approximation to the generated SQL. While it might work in the context of a specific dialect, you should not assume that the Segment.toString() representation works across multiple databases.

Specified by:

toString in interface Segment

Returns:

a SQL string representation of this Segment.

visit

public void visit(Visitor visitor)

Description copied from interface: Visitable

Accept a Visitor visiting this Visitable and its nested Visitables if applicable.

Specified by:

visit in interface Visitable

Parameters:

visitor - the visitor to notify, must not be null.

hashCode

public int hashCode()

Description copied from interface: Segment

Generate a hash code from thisSegment.

Hashcode typically derives from the Segment.toString() representation so two Segments yield the same Segment.hashCode() if their Segment.toString() representation matches.

Specified by:

hashCode in interface Segment

Overrides:

hashCode in class Object

Returns:

a hash code value for this object.

equals

public boolean equals(@Nullable Object obj)

Description copied from interface: Segment

Check whether this Segment is equal to another Segment.

Equality is typically given if the Segment.toString() representation matches.

Specified by:

equals in interface Segment

Overrides:

equals in class Object

Parameters:

obj - the reference object with which to compare.

Returns:

true if this object is the same as the other argument; false otherwise.