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1 /* |
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2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
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3 * |
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4 * Redistribution and use in source and binary forms, with or without |
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5 * modification, are permitted provided that the following conditions |
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6 * are met: |
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7 * |
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8 * - Redistributions of source code must retain the above copyright |
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9 * notice, this list of conditions and the following disclaimer. |
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10 * |
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11 * - Redistributions in binary form must reproduce the above copyright |
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12 * notice, this list of conditions and the following disclaimer in the |
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13 * documentation and/or other materials provided with the distribution. |
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14 * |
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15 * - Neither the name of Oracle nor the names of its |
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16 * contributors may be used to endorse or promote products derived |
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17 * from this software without specific prior written permission. |
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18 * |
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19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
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20 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
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21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
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23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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30 */ |
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31 |
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32 // Simple example demonstrating how to expose 'function's |
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33 // from embedding code. Any lambda object exposed to engine |
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34 // can be called as 'function' in script. |
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35 |
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36 var ScriptEngineManager = Java.type("javax.script.ScriptEngineManager"); |
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37 // create manager |
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38 var manager = new ScriptEngineManager(); |
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39 // create engine |
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40 var engine = manager.getEngineByName("js"); |
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41 |
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42 // Any lambda (@FunctionalInterface annotated type) object can be |
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43 // be exposed from script embedding code. Script can call |
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44 // it as a function |
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45 engine.put("upper", new java.util.function.Function() { |
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46 apply: function(x) x.toUpperCase() |
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47 }); |
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48 |
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49 print(engine.eval("upper('hello')")); |