URLService.java

/*******************************************************************************
 * Copyright (c) 2008, 2012 Stepan Rutz.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Stepan Rutz - initial implementation
 *    Hallvard Trætteberg - further cleanup and development
 *******************************************************************************/

package org.eclipse.nebula.widgets.geomap.internal;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.text.MessageFormat;

/**
 * Abstract super class for URL-based services with parameters
 * @since 3.3
 *
 */
public abstract class URLService {

    private String url;
    private String urlFormat;

    protected void parseUrl(String url, String defaultUrlFormat) {
		int pos = url.indexOf("{");
		if (pos > 0) {
			this.url = url.substring(0, pos);
			this.urlFormat = url.substring(pos);
		} else {
			this.url = url; 
			this.urlFormat = defaultUrlFormat;
		}
    }

    protected URLService() {
    }

    protected URLService(String url, String urlFormat) {
    	this.url = url;
        this.urlFormat = urlFormat;
    }

    protected abstract Object[] getURLFormatArguments(Object ref);
    
    protected String getServiceURL(Object ref, String urlFormat, Object[] formatArguments) {
    	String[] encodedArgs = new String[formatArguments.length];
    	for (int i = 0; i < encodedArgs.length; i++) {
    		encodedArgs[i] = formatArguments[i].toString().trim();
			try {
				encodedArgs[i] = URLEncoder.encode(encodedArgs[i], "UTF-8");
			} catch (UnsupportedEncodingException e) {
			}
		}
    	return url + MessageFormat.format(urlFormat, encodedArgs);
    }

    protected String getServiceURL(Object ref) {
    	return (urlFormat != null ? getServiceURL(ref, urlFormat, getURLFormatArguments(ref)) : null);
    }
    
    public String toString() {
        return url;
    }

    public String getURL() {
        return url;
    }
}