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  package org.apache.cayenne.project.validation;
  
  import java.sql.Types;
  import java.util.function.Supplier;
  
  import org.apache.cayenne.dba.TypesMapping;
  import org.apache.cayenne.map.ProcedureParameter;
  import org.apache.cayenne.util.Util;
  import org.apache.cayenne.validation.ValidationResult;
  
  class ProcedureParameterValidator extends ConfigurationNodeValidator<ProcedureParameter> {
  
      /**
       * @param configSupplier the config defining the behavior of this validator.
       * @since 5.0
       */
      public ProcedureParameterValidator(Supplier<ValidationConfig> configSupplier) {
          super(configSupplier);
      }
  
      @Override
      public void validate(ProcedureParameter node, ValidationResult validationResult) {
          on(node, validationResult)
                  .performIfEnabled(Inspection.PROCEDURE_PARAMETER_NO_NAME, this::checkForName)
                  .performIfEnabled(Inspection.PROCEDURE_PARAMETER_NO_TYPE, this::checkForType)
                  .performIfEnabled(Inspection.PROCEDURE_PARAMETER_NO_LENGTH, this::checkForLength)
                  .performIfEnabled(Inspection.PROCEDURE_PARAMETER_NO_DIRECTION, this::checkForDirection);
      }
  
      private void checkForName(ProcedureParameter parameter, ValidationResult validationResult) {
          // Must have name
          if (Util.isEmptyString(parameter.getName())) {
              addFailure(validationResult, parameter, "Unnamed ProcedureParameter");
          }
      }
  
      private void checkForType(ProcedureParameter parameter, ValidationResult validationResult) {
          // all attributes must have type
          if (parameter.getType() == TypesMapping.NOT_DEFINED) {
              addFailure(validationResult, parameter, "ProcedureParameter '%s' has no type", parameter.getName());
          }
      }
  
      private void checkForLength(ProcedureParameter parameter, ValidationResult validationResult) {
          // VARCHAR and CHAR attributes must have max length
          if (parameter.getMaxLength() < 0
                  && (parameter.getType() == Types.VARCHAR
                      || parameter.getType() == Types.NVARCHAR
                      || parameter.getType() == Types.CHAR
                      || parameter.getType() == Types.NCHAR)) {
  
              addFailure(validationResult, parameter, "Character ProcedureParameter '%s' doesn't have max length",
                      parameter.getName());
          }
      }
  
      private void checkForDirection(ProcedureParameter parameter, ValidationResult validationResult) {
          // all attributes must have type
          if (parameter.getDirection() <= 0) {
              addFailure(validationResult, parameter, "ProcedureParameter '%s' has no direction", parameter.getName());
          }
      }
  }
  