Java LengthConstraint类代码示例

import org.kuali.rice.krad.datadictionary.validation.constraint.LengthConstraint; //导入依赖的package包/类
protected ConstraintValidationResult processSingleLengthConstraint(DictionaryValidationResult result, Object value,
        LengthConstraint constraint,
        AttributeValueReader attributeValueReader) throws AttributeValidationException {
    // Can't process any range constraints on null values
    if (ValidationUtils.isNullOrEmpty(value)) {
        return result.addSkipped(attributeValueReader, CONSTRAINT_NAME);
    }

    DataType dataType = constraint.getDataType();
    Object typedValue = value;

    if (dataType != null) {
        typedValue = ValidationUtils.convertToDataType(value, dataType, dateTimeService);
    }

    // The only thing that can have a length constraint currently is a string.
    if (typedValue instanceof String) {
        return validateLength(result, (String) typedValue, constraint, attributeValueReader);
    }

    return result.addSkipped(attributeValueReader, CONSTRAINT_NAME);
}
 

import org.kuali.rice.krad.datadictionary.validation.constraint.LengthConstraint; //导入依赖的package包/类
@Override
public void init() {
    resolverMap = new HashMap<String, ConstraintResolver<AttributeDefinition>>();
    resolverMap.put(SimpleConstraint.class.getName(), new SimpleConstraintResolver<AttributeDefinition>());
    resolverMap.put(CaseConstraint.class.getName(), new CaseConstraintResolver<AttributeDefinition>());
    resolverMap.put(DataTypeConstraint.class.getName(), new DefinitionConstraintResolver<AttributeDefinition>());
    resolverMap.put(LengthConstraint.class.getName(), new DefinitionConstraintResolver<AttributeDefinition>());
    resolverMap.put(ValidCharactersConstraint.class.getName(),
            new ValidCharactersConstraintResolver<AttributeDefinition>());
    resolverMap.put(PrerequisiteConstraint.class.getName(),
            new PrerequisiteConstraintsResolver<AttributeDefinition>());
    resolverMap.put(MustOccurConstraint.class.getName(), new MustOccurConstraintsResolver<AttributeDefinition>());
}
 

import org.kuali.rice.krad.datadictionary.validation.constraint.LengthConstraint; //导入依赖的package包/类
/**
 * @see org.kuali.rice.krad.datadictionary.validation.processor.ConstraintProcessor#process(org.kuali.rice.krad.datadictionary.validation.result.DictionaryValidationResult,
 *      Object, org.kuali.rice.krad.datadictionary.validation.constraint.Constraint,
 *      org.kuali.rice.krad.datadictionary.validation.AttributeValueReader)
 */
@Override
public ProcessorResult process(DictionaryValidationResult result, Object value, LengthConstraint constraint,
        AttributeValueReader attributeValueReader) throws AttributeValidationException {

    // To accommodate the needs of other processors, the ConstraintProcessor.process() method returns a list of ConstraintValidationResult objects
    // but since a definition that is length constrained only constrains a single field, there is effectively always a single constraint
    // being imposed
    return new ProcessorResult(processSingleLengthConstraint(result, value, constraint, attributeValueReader));
}
 

import org.kuali.rice.krad.datadictionary.validation.constraint.LengthConstraint; //导入依赖的package包/类
/**
 * @see org.kuali.rice.krad.datadictionary.validation.processor.ConstraintProcessor#getConstraintType()
 */
@Override
public Class<? extends Constraint> getConstraintType() {
    return LengthConstraint.class;
}
 

import org.kuali.rice.krad.datadictionary.validation.constraint.LengthConstraint; //导入依赖的package包/类
protected ConstraintValidationResult validateLength(DictionaryValidationResult result, String value,
        LengthConstraint constraint, AttributeValueReader attributeValueReader) throws IllegalArgumentException {
    Integer valueLength = Integer.valueOf(value.length());

    Integer maxLength = constraint.getMaxLength();
    Integer minLength = constraint.getMinLength();

    Result lessThanMax = ValidationUtils.isLessThanOrEqual(valueLength, maxLength);
    Result greaterThanMin = ValidationUtils.isGreaterThanOrEqual(valueLength, minLength);

    // It's okay for one end of the range to be undefined - that's not an error. It's only an error if one of them is invalid 
    if (lessThanMax != Result.INVALID && greaterThanMin != Result.INVALID) {
        // Of course, if they're both undefined then we didn't actually have a real constraint
        if (lessThanMax == Result.UNDEFINED && greaterThanMin == Result.UNDEFINED) {
            return result.addNoConstraint(attributeValueReader, CONSTRAINT_NAME);
        }

        // In this case, we've succeeded
        return result.addSuccess(attributeValueReader, CONSTRAINT_NAME);
    }

    String maxErrorParameter = maxLength != null ? maxLength.toString() : null;
    String minErrorParameter = minLength != null ? minLength.toString() : null;

    // If both comparisons happened then if either comparison failed we can show the end user the expected range on both sides.
    if (lessThanMax != Result.UNDEFINED && greaterThanMin != Result.UNDEFINED) {
        return result.addError(RANGE_KEY, attributeValueReader, CONSTRAINT_NAME,
                RiceKeyConstants.ERROR_OUT_OF_RANGE, minErrorParameter, maxErrorParameter);
    }
    // If it's the max comparison that fails, then just tell the end user what the max can be
    else if (lessThanMax == Result.INVALID) {
        return result.addError(MAX_LENGTH_KEY, attributeValueReader, CONSTRAINT_NAME,
                RiceKeyConstants.ERROR_INCLUSIVE_MAX, maxErrorParameter);
    }
    // Otherwise, just tell them what the min can be
    else {
        return result.addError(MIN_LENGTH_KEY, attributeValueReader, CONSTRAINT_NAME,
                RiceKeyConstants.ERROR_EXCLUSIVE_MIN, minErrorParameter);
    }

}