Class TupleExpression

java.lang.Object

org.springframework.data.relational.core.sql.TupleExpression

All Implemented Interfaces:

Expression, Segment, Visitable

public class TupleExpression
extends Object
implements Expression

A tuple as used for IN predicates. For example:

  WHERE (one, two) IN (select x, y from some_table)

Since:

4.0

Author:

Jens Schauder

Method Summary

Modifier and Type	Method	Description
static TupleExpression	create(Collection<? extends Expression> expressions)	Creates a TupleExpression from the given expressions.
static TupleExpression	create(Expression... expressions)	Creates a TupleExpression from the given expressions.
boolean	equals(@Nullable Object obj)	Check whether this Segment is equal to another Segment.
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 TupleExpression create(Expression... expressions)

Creates a TupleExpression from the given expressions.

Parameters:

expressions - must not be null or empty.

Returns:

the new TupleExpression.

create

public static TupleExpression create(Collection<? extends Expression> expressions)

Creates a TupleExpression from the given expressions.

Parameters:

expressions - must not be null or empty.

Returns:

the new TupleExpression.

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.