aoqi@0: /*
aoqi@0:  * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  *
aoqi@0:  * Redistribution and use in source and binary forms, with or without
aoqi@0:  * modification, are permitted provided that the following conditions
aoqi@0:  * are met:
aoqi@0:  *
aoqi@0:  *   - Redistributions of source code must retain the above copyright
aoqi@0:  *     notice, this list of conditions and the following disclaimer.
aoqi@0:  *
aoqi@0:  *   - Redistributions in binary form must reproduce the above copyright
aoqi@0:  *     notice, this list of conditions and the following disclaimer in the
aoqi@0:  *     documentation and/or other materials provided with the distribution.
aoqi@0:  *
aoqi@0:  *   - Neither the name of Oracle nor the names of its
aoqi@0:  *     contributors may be used to endorse or promote products derived
aoqi@0:  *     from this software without specific prior written permission.
aoqi@0:  *
aoqi@0:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
aoqi@0:  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
aoqi@0:  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
aoqi@0:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
aoqi@0:  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
aoqi@0:  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
aoqi@0:  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
aoqi@0:  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
aoqi@0:  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
aoqi@0:  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
aoqi@0:  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
aoqi@0:  */
aoqi@0: 
lagergren@1082: import javax.script.Bindings;
lagergren@1082: import javax.script.ScriptContext;
lagergren@1082: import javax.script.ScriptEngine;
lagergren@1082: import javax.script.ScriptEngineManager;
lagergren@1082: import javax.script.SimpleScriptContext;
aoqi@0: 
lagergren@1082: @SuppressWarnings("javadoc")
aoqi@0: public class MultiScopes {
lagergren@1082:     public static void main(final String[] args) throws Exception {
lagergren@1082:         final ScriptEngineManager manager = new ScriptEngineManager();
lagergren@1082:         final ScriptEngine engine = manager.getEngineByName("nashorn");
aoqi@0: 
aoqi@0:         engine.put("x", "hello");
aoqi@0:         // print global variable "x"
aoqi@0:         engine.eval("print(x);");
aoqi@0:         // the above line prints "hello"
aoqi@0: 
aoqi@0:         // Now, pass a different script context
lagergren@1082:         final ScriptContext newContext = new SimpleScriptContext();
aoqi@0:         newContext.setBindings(engine.createBindings(), ScriptContext.ENGINE_SCOPE);
lagergren@1082:         final Bindings engineScope = newContext.getBindings(ScriptContext.ENGINE_SCOPE);
aoqi@0: 
aoqi@0:         // add new variable "x" to the new engineScope
aoqi@0:         engineScope.put("x", "world");
aoqi@0: 
aoqi@0:         // execute the same script - but this time pass a different script context
aoqi@0:         engine.eval("print(x);", newContext);
aoqi@0:         // the above line prints "world"
aoqi@0:     }
aoqi@0: }
aoqi@0: 
aoqi@0: