org.teiid.language
Class ScalarSubquery

java.lang.Object
  org.teiid.language.BaseLanguageObject
      org.teiid.language.ScalarSubquery

All Implemented Interfaces:

Expression, LanguageObject, SubqueryContainer

public class ScalarSubquery
extends BaseLanguageObject
implements Expression, SubqueryContainer

Represents a scalar subquery. That is, a query that is evaluated as a scalar expression and returns a single value. The inner subquery must return exactly 1 column as well.

Constructor Summary

ScalarSubquery(QueryExpression query)

Method Summary

void	acceptVisitor(LanguageObjectVisitor visitor)
QueryExpression	getSubquery() Get the inner subquery
java.lang.Class<?>	getType() Determine the type returned by this expression.
void	setSubquery(QueryExpression query) Set the inner subquery

Methods inherited from class org.teiid.language.BaseLanguageObject

toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ScalarSubquery

public ScalarSubquery(QueryExpression query)

Method Detail

getSubquery

public QueryExpression getSubquery()

Description copied from interface: SubqueryContainer

Get the inner subquery

Specified by:

getSubquery in interface SubqueryContainer

Returns:

Subquery

setSubquery

public void setSubquery(QueryExpression query)

Description copied from interface: SubqueryContainer

Set the inner subquery

Specified by:

setSubquery in interface SubqueryContainer

Parameters:

query - Subquery

acceptVisitor

public void acceptVisitor(LanguageObjectVisitor visitor)

Specified by:

acceptVisitor in interface LanguageObject

getType

public java.lang.Class<?> getType()

Description copied from interface: Expression

Determine the type returned by this expression.

Specified by:

getType in interface Expression

Returns:

The type, as defined by a Java class