package liquibase.sqlgenerator.core;
   
   import liquibase.database.Database;
   import liquibase.exception.ValidationErrors;
   import liquibase.sql.Sql;
   import liquibase.sql.UnparsedSql;
   import liquibase.sqlgenerator.SqlGenerator;
   import liquibase.sqlgenerator.SqlGeneratorChain;
   import liquibase.statement.StoredProcedureStatement;
  
  public class StoredProcedureGenerator extends AbstractSqlGenerator<StoredProcedureStatement> {
  
      public ValidationErrors validate(StoredProcedureStatement storedProcedureStatement, Database database,
              SqlGeneratorChain sqlGeneratorChain) {
          ValidationErrors validationErrors = new ValidationErrors();
          validationErrors.checkRequiredField("procedureName", storedProcedureStatement.getProcedureName());
          return validationErrors;
      }
  
      public Sql[] generateSql(StoredProcedureStatement statement, Database database, SqlGeneratorChain sqlGeneratorChain) {
          StringBuffer string = new StringBuffer();
          string.append("exec (").append(statement.getProcedureName());
          for (String param : statement.getParameters()) {
              string.append(" ").append(param).append(",");
          }
          return new Sql[] { new UnparsedSql(string.toString().replaceFirst(",$", ")")) };
  
      }
  }