ontopoly.validators.RegexValidator.java Source code

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Here is the source code for ontopoly.validators.RegexValidator.java

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/*
 * #!
 * Ontopoly Editor
 * #-
 * Copyright (C) 2001 - 2013 The Ontopia Project
 * #-
 * 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 ontopoly.validators;

import java.io.Serializable;
import java.util.regex.PatternSyntaxException;

import ontopoly.components.AbstractFieldInstancePanel;
import ontopoly.models.FieldInstanceModel;

import org.apache.wicket.Application;
import org.apache.wicket.Component;
import org.apache.wicket.model.Model;
import org.apache.wicket.validation.IValidatable;
import org.apache.wicket.validation.validator.AbstractValidator;

public abstract class RegexValidator extends AbstractValidator<String> {

    protected FieldInstanceModel fieldInstanceModel;
    private final Component component;

    public RegexValidator(Component component, FieldInstanceModel fieldInstanceModel) {
        this.component = component;
        this.fieldInstanceModel = fieldInstanceModel;
    }

    @Override
    protected void onValidate(IValidatable<String> validatable) {
        final String value = validatable.getValue();
        final String regex = getRegex();

        if (value == null)
            return;
        try {
            if (value.matches(regex))
                return;
            else
                reportError(resourceKeyInvalidValue(), value, regex);

        } catch (PatternSyntaxException e) {
            reportError(resourceKeyInvalidRegex(), value, regex);
        }
    }

    private void reportError(String resourceKey, final String value, final String regex) {
        try {
            String message = Application.get().getResourceSettings().getLocalizer().getString(resourceKey,
                    (Component) null, new Model<Serializable>(new Serializable() {
                        @SuppressWarnings("unused")
                        public String getValue() {
                            return value;
                        }

                        @SuppressWarnings("unused")
                        public String getRegex() {
                            return regex;
                        }
                    }));
            component.error(
                    AbstractFieldInstancePanel.createErrorMessage(fieldInstanceModel, new Model<String>(message)));
        } catch (Exception e) {
            component.error(AbstractFieldInstancePanel.createErrorMessage(fieldInstanceModel,
                    new Model<String>("Regexp validation error (value='" + value + "', regex='" + regex + "')")));
        }
    }

    protected abstract String getRegex();

    protected String resourceKeyInvalidValue() {
        return "validators.RegexValidator";
    }

    protected String resourceKeyInvalidRegex() {
        return "validators.RegexValidator.invalidRegex";
    }

}