package liquibase.sqlgenerator.core;

 import liquibase.database.Database;

 import liquibase.database.core.FirebirdDatabase;

 import liquibase.exception.ValidationErrors;

 import liquibase.sql.Sql;

 import liquibase.sql.UnparsedSql;

 import liquibase.sqlgenerator.SqlGenerator;

 import liquibase.sqlgenerator.SqlGeneratorChain;

 import liquibase.statement.core.SelectSequencesStatement;

 public class SelectSequencesGeneratorFirebird extends AbstractSqlGenerator<SelectSequencesStatement> {

     @Override

     public int getPriority() {

         return PRIORITY_DATABASE;

     }

     @Override

     public boolean supports(SelectSequencesStatement statement, Database database) {

         return database instanceof FirebirdDatabase;

     }

     public ValidationErrors validate(SelectSequencesStatement statement, Database database,

             SqlGeneratorChain sqlGeneratorChain) {

         return new ValidationErrors();

     }

     public Sql[] generateSql(SelectSequencesStatement statement, Database database, SqlGeneratorChain sqlGeneratorChain) {

         return new Sql[] { new UnparsedSql(

                 "SELECT RDB$GENERATOR_NAME FROM RDB$GENERATORS WHERE RDB$SYSTEM_FLAG IS NULL OR RDB$SYSTEM_FLAG = 0") };

     }

 }