Package io.github.torand.fastersql.predicate

Class ExistsSubquery

java.lang.Object

io.github.torand.fastersql.predicate.ExistsSubquery

All Implemented Interfaces:

Predicate, Sql

public class ExistsSubquery
extends Object
implements Predicate

Implements the 'existence' (at least one row) predicate.

Method Summary

Modifier and Type	Method	Description
String	negatedSql(Context context)	Formats negated predicate as an SQL fragment.
Stream<Object>	params(Context context)	Gets the statement parameters introduced by this fragment.
String	sql(Context context)	Formats object as an SQL fragment.

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.github.torand.fastersql.predicate.Predicate

and, and, or, or

Methods inherited from interface io.github.torand.fastersql.sql.Sql

aliasRefs, columnRefs

Method Details

sql

public String sql(Context context)

Description copied from interface: Sql

Formats object as an SQL fragment.

Specified by:

sql in interface Sql

Parameters:

context - the context (incl. dialect).

Returns:

the formatted SQL fragment.

params

public Stream<Object> params(Context context)

Description copied from interface: Sql

Gets the statement parameters introduced by this fragment.

Specified by:

params in interface Sql

Parameters:

context - the context (incl. dialect).

Returns:

the statement parameters.

negatedSql

public String negatedSql(Context context)

Description copied from interface: Predicate

Formats negated predicate as an SQL fragment.

Specified by:

negatedSql in interface Predicate

Parameters:

context - the context (incl. dialect).

Returns:

the formatted SQL fragment.