sundar@1511: /*
sundar@1511:  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
sundar@1511:  *
sundar@1511:  * Redistribution and use in source and binary forms, with or without
sundar@1511:  * modification, are permitted provided that the following conditions
sundar@1511:  * are met:
sundar@1511:  *
sundar@1511:  *   - Redistributions of source code must retain the above copyright
sundar@1511:  *     notice, this list of conditions and the following disclaimer.
sundar@1511:  *
sundar@1511:  *   - Redistributions in binary form must reproduce the above copyright
sundar@1511:  *     notice, this list of conditions and the following disclaimer in the
sundar@1511:  *     documentation and/or other materials provided with the distribution.
sundar@1511:  *
sundar@1511:  *   - Neither the name of Oracle nor the names of its
sundar@1511:  *     contributors may be used to endorse or promote products derived
sundar@1511:  *     from this software without specific prior written permission.
sundar@1511:  *
sundar@1511:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
sundar@1511:  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
sundar@1511:  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
sundar@1511:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
sundar@1511:  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
sundar@1511:  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
sundar@1511:  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
sundar@1511:  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
sundar@1511:  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
sundar@1511:  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
sundar@1511:  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
sundar@1511:  */
sundar@1511: 
sundar@1511: // bind on a Java constructor
sundar@1511: 
sundar@1511: // See Function.prototype.bind:
sundar@1511: // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/bind
sundar@1511: var bind = Function.prototype.bind;
sundar@1511: 
sundar@1511: var URL = Java.type("java.net.URL");
sundar@1511: 
sundar@1511: // get the constructor that accepts URL, String parameters.
sundar@1511: // constructor signatures are properties of type object.
sundar@1511: var newURL = URL["(URL, String)"];
sundar@1511: 
sundar@1511: // bind "context" URL parameter.
sundar@1511: var TwitterURL = bind.call(newURL, null, new URL('https://www.twitter.com'));
sundar@1511: 
sundar@1511: // now you can create context relative URLs using the bound constructor
sundar@1511: print(new TwitterURL("sundararajan_a"));
sundar@1511: 
sundar@1511: // read the URL content and print (optional part)
sundar@1511: 
sundar@1511: var BufferedReader = Java.type("java.io.BufferedReader");
sundar@1511: var InputStreamReader = Java.type("java.io.InputStreamReader");
sundar@1511: 
sundar@1511: // function to retrieve text content of the given URL
sundar@1511: function readTextFromURL(url) {
sundar@1511:     var str = '';
sundar@1511:     var u = new URL(url);
sundar@1511:     var reader = new BufferedReader(
sundar@1511:         new InputStreamReader(u.openStream()));
sundar@1511:     try {
sundar@1511:         reader.lines().forEach(function(x) str += x);
sundar@1511:         return str;
sundar@1511:     } finally {
sundar@1511:         reader.close();
sundar@1511:     }
sundar@1511: }
sundar@1511: 
sundar@1511: print(readTextFromURL(new TwitterURL("sundararajan_a")));