aswi2020vldc-gitlab/src/main/java/vldc/aswi/validators/AssemblyValidator.java @ 8db0bbf6

package vldc.aswi.validators;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.validation.Errors;
import org.springframework.validation.Validator;
import vldc.aswi.domain.Assembly;
import vldc.aswi.domain.parameter.Parameter;
import vldc.aswi.service.SqlQueryManager;

import java.util.List;

/**
 * Validator for assembly.
 */
@Component
public class AssemblyValidator implements Validator {

    /** Autowired sql query manager. */
    @Autowired
    private SqlQueryManager sqlQueryManager;

    /**
     * Validator for supporting this class.
     * @param aClass - Class.
     * @return true if sent class match Assembly class.
     */
    @Override
    public boolean supports(Class<?> aClass) {
        return Assembly.class.isAssignableFrom(aClass);
    }

    /**
     * Validate assembly values.
     * @param obj - Validated object.
     * @param errors - Errors sended to output.
     */
    @Override
    public void validate(Object obj, Errors errors) {

        // Get assembly values.
        Assembly assembly = (Assembly) obj;

        // Validate SQL Query.
        List<String> columnNames = this.sqlQueryManager.getNameOfColumnsFromQuery(assembly.getSQLQuery());

        if (columnNames == null) {
            errors.rejectValue("SQLQuery", "SQL Query není validní!");
            return;
        }

        if (assembly.getParameters() != null && assembly.getParameters().size() > 0) {
            for (int i = 0; i < assembly.getParameters().size(); i++) {
                Parameter parameter = assembly.getParameters().get(i);

                // If parameter does not have name then it means, that it is deleted parameter.
                if (parameter.getName() == null) {
                    continue;
                }

                // Check if parameter's nameOfSelect is contained in column names of SQL query.
                if (parameter.getNameOfSelect() == null || !columnNames.stream().anyMatch(n-> n.equalsIgnoreCase(parameter.getNameOfSelect()))) {
                    errors.reject("parameters[" + i + "].nameOfSelect", "Název parametru v SQL není validní u parametru '" + parameter.getName() + "'!");
                }

                // Check if current parameter have at least 1 location.
                if (parameter.getLocations() == null || parameter.getLocations().size() == 0) {
                    errors.rejectValue("parameters[" + i + "].locations", "", "Není vybrána žádná lokace u parametru '" + parameter.getName() + "'!");
                }
            }
        }
    }
}