org.sylvani.bot.dialogs.Question.java Source code

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Here is the source code for org.sylvani.bot.dialogs.Question.java

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/**
 *    Copyright (C) 2016-2017 Harald Kuhn
 *
 *    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.sylvani.bot.dialogs;

import java.lang.reflect.ParameterizedType;

import org.apache.commons.beanutils.ConvertUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.sylvani.bot.IActivity;
import org.sylvani.bot.ISession;
import org.sylvani.bot.util.IModel;
import org.sylvani.bot.util.ISessionModel;

/**
 * @author Harald Kuhn
 *
 */
public abstract class Question<T> extends DialogBase {

    private Logger logger = LoggerFactory.getLogger(Question.class);

    private IValidator<T> answerValidator;
    private ISessionModel<T> answerModel;

    private IModel<String> confirmText;

    public Question(ISessionModel<T> anwerModel) {
        this.answerModel = anwerModel;
    }

    /**
     * use only for subclassing when {@link #answered(Object, ISession)} is overwritten
     */
    protected Question() {
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.sylvani.bot.IHandler#handle(org.sylvani.bot.ISession, org.sylvani.bot.IActivity)
     */
    @Override
    public void handle(ISession session, IActivity activity) {
        T answer = null;
        Object alreadyAsked = session.getAttribute(String.valueOf(this.hashCode()));
        logger.debug("asked code =  " + alreadyAsked);
        if (alreadyAsked != null) {
            String text = activity.getText();
            answer = findAnswer(text);
        }
        if (answer != null) {
            answered(answer, session, activity);
            return;
        }
        session.setAttribute(String.valueOf(this.hashCode()), "asked");
        super.handle(session, activity);
    }

    protected void answered(T answer, ISession session, IActivity answerActivity) {
        session.removeAttribut("asked");
        answerModel.setObject(answer, session);
        session.activeDialogFinished(answerActivity);
    }

    protected T findAnswer(String text) {
        return convert(text);
    }

    @SuppressWarnings({ "rawtypes", "unchecked" })
    protected T convert(String answerText) {
        Class clazz = ((Class) ((ParameterizedType) getClass().getGenericSuperclass()).getActualTypeArguments()[0]);
        return (T) ConvertUtils.convert(answerText, clazz);
    }

    public IValidator<T> getAnswerValidator() {
        return answerValidator;
    }

    public void setAnswerValidator(IValidator<T> answerValidator) {
        this.answerValidator = answerValidator;
    }

    public IModel<String> getConfirmText() {
        return confirmText;
    }

    public void setConfirmText(IModel<String> confirmText) {
        this.confirmText = confirmText;
    }

}