org.faster.orm.service.hibernate.HibernateValidateService.java Source code

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Here is the source code for org.faster.orm.service.hibernate.HibernateValidateService.java

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/*
 * Copyright (c) 2013 @iSQWEN. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.faster.orm.service.hibernate;

import java.io.Serializable;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

import javax.validation.ConstraintViolation;
import javax.validation.Validator;
import javax.validation.groups.Default;

import org.faster.util.Beans;
import org.faster.orm.model.GenericEntity;
import org.faster.orm.validation.Errors;
import org.faster.orm.validation.GroupValidator;
import org.hibernate.criterion.DetachedCriteria;
import org.hibernate.criterion.Restrictions;

/**
 * @author sqwen
 */
public abstract class HibernateValidateService<PO extends GenericEntity<ID>, ID extends Serializable>
        extends HibernateStatsService<PO, ID> {

    protected Validator validator;

    protected List<GroupValidator<PO>> groupValidators;

    private Map<Class<?>, GroupValidator<PO>> map;

    public void setValidator(Validator validator) {
        this.validator = validator;
    }

    public void setGroupValidators(List<GroupValidator<PO>> groupValidators) {
        this.groupValidators = groupValidators;
    }

    private GroupValidator<PO> getGroupValidator(Class<?> group) {
        if (map == null) {
            initGroupValidators();
        }
        return map.get(group);
    }

    protected void initGroupValidators() {
        map = new HashMap<Class<?>, GroupValidator<PO>>();
        if (groupValidators == null) {
            return;
        }

        for (GroupValidator<PO> gv : groupValidators) {
            map.put(gv.validateForGroup(), gv);
        }
    }

    protected void addGroupValidator(GroupValidator<PO> gv) {
        map.put(gv.validateForGroup(), gv);
    }

    @Override
    public boolean isValid(PO po) {
        return isValid(po, Default.class);
    }

    @Override
    public boolean isValid(PO po, Class<?>... groups) {
        for (Class<?> group : groups) {
            Errors<PO> errors = validate(po, group);
            if (errors.hasErrors()) {
                return false;
            }
        }
        return true;
    }

    @Override
    public Errors<PO> validate(PO po) {
        return validate(po, Default.class);
    }

    @Override
    public Errors<PO> validate(PO po, Class<?>... groups) {
        Set<ConstraintViolation<PO>> constraintViolations = validator.validate(po, groups);
        Errors<PO> errors = new Errors<PO>(constraintViolations);
        for (Class<?> group : groups) {
            GroupValidator<PO> gv = getGroupValidator(group);
            if (gv != null) {
                gv.validate(po, errors);
            }
        }
        return errors;
    }

    @Override
    public void validatesUniquenessOf(PO po, String propertyName, Errors<PO> errors) {
        validatesUniquenessOf(po, propertyName, null, errors);
    }

    @Override
    public void validatesUniquenessOf(PO po, String[] propertyNames, Errors<PO> errors) {
        for (String propertyName : propertyNames) {
            validatesUniquenessOf(po, propertyName, errors);
        }
    }

    @Override
    public void validatesUniquenessOf(PO po, String propertyName, ID excludeId, Errors<PO> errors) {
        Object value = Beans.getProperty(po, propertyName);
        if (Beans.isNullOrEmpty(value)) {
            return;
        }

        DetachedCriteria dc = buildCriteriaByPropertyAndValue(propertyName, value);
        if (excludeId != null) {
            dc.add(Restrictions.not(Restrictions.idEq(excludeId)));
        }

        if (existsByCriteria(dc)) {
            errors.addErrorCode(propertyName.toUpperCase() + "_ALREADY_EXISTS");
        }
    }

    @Override
    public void validatesUniquenessOf(PO po, String[] propertyNames, ID excludeId, Errors<PO> errors) {
        for (String propertyName : propertyNames) {
            validatesUniquenessOf(po, propertyName, excludeId, errors);
        }
    }

}