org.sql.generation.api.grammar.query
Class QueryExpressionBody.EmptyQueryExpressionBody

java.lang.Object
  org.sql.generation.api.grammar.query.QueryExpressionBody.EmptyQueryExpressionBody

All Implemented Interfaces:

org.atp.api.Typeable<ValueExpression>, NonBooleanExpression, ValueExpression, QueryExpressionBody

Enclosing interface:

QueryExpressionBody

public static final class QueryExpressionBody.EmptyQueryExpressionBody
extends Object
implements QueryExpressionBody

This syntax element represents the empty query expression body. It is defined for convenience. For example, an UNION (or any other set operation) between empty query and another query is always just another query.

Author:

Stanislav Muhametsin

Nested Class Summary

Nested classes/interfaces inherited from interface org.sql.generation.api.grammar.query.QueryExpressionBody

QueryExpressionBody.EmptyQueryExpressionBody

Field Summary

static QueryExpressionBody.EmptyQueryExpressionBody

INSTANCE The singleton instance of QueryExpressionBody.EmptyQueryExpressionBody.

Method Summary

Class<? extends QueryExpressionBody>

getImplementedType() Returns QueryExpressionBody.EmptyQueryExpressionBody.

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final QueryExpressionBody.EmptyQueryExpressionBody INSTANCE

The singleton instance of QueryExpressionBody.EmptyQueryExpressionBody.

Method Detail

getImplementedType

public Class<? extends QueryExpressionBody> getImplementedType()

Returns QueryExpressionBody.EmptyQueryExpressionBody.

Specified by:

getImplementedType in interface org.atp.api.Typeable<ValueExpression>