com.fiveamsolutions.nci.commons.validator.MultipleCriteriaMessageInterpolator.java Source code

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/**
 * The software subject to this notice and license includes both human readable
 * source code form and machine readable, binary, object code form. The nci-commons
 * Software was developed in conjunction with the National Cancer Institute
 * (NCI) by NCI employees and 5AM Solutions, Inc. (5AM). To the extent
 * government employees are authors, any rights in such works shall be subject
 * to Title 17 of the United States Code, section 105.
 *
 * This nci-commons Software License (the License) is between NCI and You. You (or
 * Your) shall mean a person or an entity, and all other entities that control,
 * are controlled by, or are under common control with the entity. Control for
 * purposes of this definition means (i) the direct or indirect power to cause
 * the direction or management of such entity, whether by contract or otherwise,
 * or (ii) ownership of fifty percent (50%) or more of the outstanding shares,
 * or (iii) beneficial ownership of such entity.
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 * This License is granted provided that You agree to the conditions described
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 * right to license such rights to further third parties. For sake of clarity,
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 * above copyright notice, this list of conditions and the disclaimer and
 * limitation of liability of Article 6, below. Your redistributions in object
 * code form must reproduce the above copyright notice, this list of conditions
 * and the disclaimer of Article 6 in the documentation and/or other materials
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 * include the following acknowledgment: This product includes software
 * developed by 5AM and the National Cancer Institute. If You do not include
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 * Software itself, wherever such third-party acknowledgments normally appear.
 *
 * You may not use the names "The National Cancer Institute", "NCI", or "5AM"
 * to endorse or promote products derived from this Software. This License does
 * not authorize You to use any trademarks, service marks, trade names, logos or
 * product names of either NCI or 5AM, except as required to comply with the
 * terms of this License.
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 * For sake of clarity, and not by way of limitation, You may incorporate this
 * Software into Your proprietary programs and into any third party proprietary
 * programs. However, if You incorporate the Software into third party
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 * For sake of clarity, and not by way of limitation, You may add Your own
 * copyright statement to Your modifications and to the derivative works, and
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 * sublicenses of modifications of the Software, or any derivative works of the
 * Software as a whole, provided Your use, reproduction, and distribution of the
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 * (INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
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 * EVENT SHALL THE NATIONAL CANCER INSTITUTE, 5AM SOLUTIONS, INC. OR THEIR
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 */
package com.fiveamsolutions.nci.commons.validator;

import java.util.Map;
import java.util.ResourceBundle;
import java.util.regex.Pattern;

import org.apache.commons.lang.StringUtils;
import org.hibernate.validator.MessageInterpolator;
import org.hibernate.validator.Validator;

/**
 * Message Interpolator that combines the error messages for the multiple criteria validated
 * by an AbstractMultipleCriteriaValidator into a single string so that the error message identifies
 * all of the validation failures.
 * @author ddasgupta
 */
public class MultipleCriteriaMessageInterpolator implements MessageInterpolator {

    /**
     * The header for the combined error message.
     */
    public static final String HEADER = "Multiple Criteria Error Messages";

    /**
     * The separator between each message in the combined error message.
     */
    public static final String MESSAGE_SEPARATOR = " ; ";

    /**
     * The separator between fields of an individual message in the combined error message.
     */
    public static final String FIELD_SEPARATOR = " : ";

    private ResourceBundle bundle;

    /**
     * {@inheritDoc}
     */
    @Override
    @SuppressWarnings("rawtypes")
    public String interpolate(String message, Validator validator, MessageInterpolator defaultInterpolator) {
        if (!AbstractMultipleCriteriaValidator.class.isAssignableFrom(validator.getClass())) {
            return interpolateWithDefault(message, validator, defaultInterpolator);
        }

        StringBuffer fullMessage = new StringBuffer(HEADER + MESSAGE_SEPARATOR);
        for (ValidationError ve : ((AbstractMultipleCriteriaValidator<?>) validator).getValidationErrors()) {
            fullMessage.append(ve.getFieldName());
            fullMessage.append(FIELD_SEPARATOR);
            fullMessage.append(getErrorMessage(ve, validator, defaultInterpolator));
            fullMessage.append(MESSAGE_SEPARATOR);
        }
        return fullMessage.toString();
    }

    @SuppressWarnings("rawtypes")
    private String getErrorMessage(ValidationError ve, Validator validator,
            MessageInterpolator defaultInterpolator) {
        String error = interpolateWithDefault(ve.getErrorMessageKey(), validator, defaultInterpolator);
        for (Map.Entry<String, Object> replacement : ve.getErrorMessageReplacements().entrySet()) {
            String token = Pattern.quote("{" + replacement.getKey() + "}");
            error = error.replaceAll(token, replacement.getValue().toString());
        }
        return error;
    }

    @SuppressWarnings("rawtypes")
    private String interpolateWithDefault(String message, Validator validator,
            MessageInterpolator defaultInterpolator) {
        String toInterpolate = message;
        String key = StringUtils.removeStart(StringUtils.removeEnd(message, "}"), "{");
        if (bundle != null && bundle.containsKey(key)) {
            toInterpolate = bundle.getString(key);
        }
        return defaultInterpolator.interpolate(toInterpolate, validator, defaultInterpolator);
    }

    /**
     * @param bundle the bundle to set
     */
    public void setBundle(ResourceBundle bundle) {
        this.bundle = bundle;
    }
}