org.grible.adaptor.BaseDescriptor.java Source code

Introduction

Here is the source code for org.grible.adaptor.BaseDescriptor.java

Source

/*******************************************************************************
 * Copyright (c) 2013 - 2014 Maksym Barvinskyi.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v2.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * 
 * Contributors:
 *     Maksym Barvinskyi - initial API and implementation
 ******************************************************************************/
package org.grible.adaptor;

import java.util.HashMap;

import org.apache.commons.lang3.StringUtils;

/**
 * Abstract template for descriptors objects. Contains methods for transforming data from HashMap to the descriptor.
 * 
 * @author Maksym Barvinskyi
 * 
 */
public abstract class BaseDescriptor {
    private HashMap<String, String> data;
    private boolean isNotEmpty;

    public BaseDescriptor(HashMap<String, String> data) {
        if (data != null) {
            this.data = data;
            this.setNotEmpty(true);
        } else {
            this.setNotEmpty(false);
        }
    }

    private void setNotEmpty(boolean isNotEmpty) {
        this.isNotEmpty = isNotEmpty;
    }

    protected String getString(String key) {
        if (data != null) {
            if (!data.containsKey(key)) {
                Exception e = new Exception(
                        "Descriptor error: key '" + key + "' not found. HashMap: " + data + ".");
                GribleSettings.getErrorsHandler().onAdaptorFail(e);
            }
            return data.get(key);
        }
        return null;
    }

    protected boolean getBoolean(String key) {
        if (data != null) {
            if (!data.containsKey(key)) {
                Exception e = new Exception(
                        "Descriptor error: key '" + key + "' not found. HashMap: " + data + ".");
                GribleSettings.getErrorsHandler().onAdaptorFail(e);
            }
            return Boolean.parseBoolean(data.get(key));
        }
        return false;
    }

    protected int getInt(String key) {
        if (data != null) {
            if (!data.containsKey(key)) {
                Exception e = new Exception(
                        "Descriptor error: key '" + key + "' not found. HashMap: " + data + ".");
                GribleSettings.getErrorsHandler().onAdaptorFail(e);
            }
            if (StringUtils.isNumeric(data.get(key))) {
                return Integer.parseInt(data.get(key));
            }
        }
        return 0;
    }

    /**
     * Is the descriptor empty or not? Empty descriptor could be created by setting "0" value in Grible. All the
     * properties of empty descriptor are null.
     * 
     * @return true if descriptor is not empty.
     */
    public boolean isNotEmpty() {
        return isNotEmpty;
    }
}