net.ftlines.wicket.validation.bean.ViolationConverter.java Source code

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Here is the source code for net.ftlines.wicket.validation.bean.ViolationConverter.java

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/**
 * 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 net.ftlines.wicket.validation.bean;

import javax.validation.ConstraintViolation;
import javax.validation.metadata.ConstraintDescriptor;

import org.apache.wicket.util.string.Strings;
import org.apache.wicket.validation.ValidationError;

/**
 * A default implementation of {@link IViolationConverter}
 * 
 * TODO more docs about the actual conversion process
 * 
 * @author igor
 * 
 */
public class ViolationConverter implements IViolationConverter {
    @Override
    public <T> ValidationError convert(ConstraintViolation<T> violation) {
        ConstraintDescriptor<?> desc = violation.getConstraintDescriptor();

        ValidationError error = new ValidationError();
        error.setMessage(violation.getMessage());
        addMessageKey(error, desc, "message");

        // TODO figure out how to handle composite constraints, see desc.isReportAsSingleViolation()

        for (String key : desc.getAttributes().keySet()) {
            error.setVariable(key, desc.getAttributes().get(key));
        }
        return error;
    }

    protected void addMessageKey(ValidationError error, ConstraintDescriptor<?> desc, String attr) {
        final Object val = desc.getAttributes().get(attr);
        if (val != null) {
            String str = val.toString();
            if (!Strings.isEmpty(str) && str.startsWith("{") && str.endsWith("}")) {
                error.addMessageKey(str.substring(1, str.length() - 1));
            }
        }
    }

}