diff -r 2e3bd98c5664 -r bda887c0088a nashorn/samples/weather.js --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/nashorn/samples/weather.js Wed May 07 20:20:58 2014 +0530 @@ -0,0 +1,63 @@ +#// usage: jjs -scripting weather.js + +/* + * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * - Neither the name of Oracle nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS + * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +// Simple nashorn example showing back-quote exec process, +// JSON and Java8 streams + +var Arrays = Java.type("java.util.Arrays"); + +// use curl to download JSON weather data from the net +// use backquote -scripting mode syntax to exec a process + +`curl http://api.openweathermap.org/data/2.5/forecast/daily?q=Chennai&mode=json&units=metric&cnt=7`; + +// parse JSON +var weather = JSON.parse($OUT); + +// pull out humidity as array +var humidity = weather.list.map(function(curVal) { + return curVal.humidity; +}) + +// Stream API to print stat +print("Humidity"); +print(Arrays["stream(int[])"](humidity).summaryStatistics()); + +// pull maximum day time temperature +var temp = weather.list.map(function(curVal) { + return curVal.temp.max; +}); + +// Stream API to print stat +print("Max Temperature"); +print(Arrays["stream(double[])"](temp).summaryStatistics());