package liquibase.sqlgenerator.core;

 import liquibase.database.Database;

 import liquibase.exception.ValidationErrors;

 import liquibase.sql.Sql;

 import liquibase.sqlgenerator.SqlGenerator;

 import liquibase.sqlgenerator.SqlGeneratorChain;

 import liquibase.sqlgenerator.SqlGeneratorFactory;

 import liquibase.statement.core.GetNextChangeSetSequenceValueStatement;

 import liquibase.statement.core.SelectFromDatabaseChangeLogStatement;

 public class GetNextChangeSetSequenceValueGenerator extends

         AbstractSqlGenerator<GetNextChangeSetSequenceValueStatement> {

     public ValidationErrors validate(GetNextChangeSetSequenceValueStatement statement, Database database,

             SqlGeneratorChain sqlGeneratorChain) {

         return new ValidationErrors();

     }

     public Sql[] generateSql(GetNextChangeSetSequenceValueStatement statement, Database database,

             SqlGeneratorChain sqlGeneratorChain) {

         return SqlGeneratorFactory.getInstance().generateSql(

                 new SelectFromDatabaseChangeLogStatement("MAX(ORDEREXECUTED)"), database);

     }

 }