src/script/rhino/RhinoScriptFactory.java

package script.rhino;

import script.jython.*;
import java.io.IOException;

import java.io.StringReader;
import org.mozilla.javascript.Context;
import org.mozilla.javascript.NativeJavaObject;
import org.mozilla.javascript.Script;
import org.mozilla.javascript.Scriptable;

import org.springframework.scripting.ScriptCompilationException;
import org.springframework.scripting.ScriptSource;

import script.GenericScriptFactory;


/**
 * Factory for Javascript (Rhino) scripts.
 * 
 * @author jason
 */
public class RhinoScriptFactory extends GenericScriptFactory {

    private Scriptable scope;
    
    public RhinoScriptFactory(String scriptSourceLocator, String beanName, Class returnType, Scriptable scope) {
        super(scriptSourceLocator, beanName, returnType);
        
        
        setScope(scope);
    }
    
    /**
     * Javascript scope to use when running the script.
     */
    public void setScope(Scriptable scope) {
        this.scope = scope;
    }

    public Object getScriptedObject(ScriptSource scriptSource, Class[] actualInterfaces) throws IOException, ScriptCompilationException {
        synchronized (getScriptClassMonitor()) {
            if (getScriptResult() == null || scriptSource.isModified()) {
                Context cx = Context.enter();
                try {
                    Scriptable threadScope = cx.newObject(scope);

                    StringReader sr = new StringReader(scriptSource.getScriptAsString());

                    Script script = cx.compileReader(sr, "<cmd>", 1, null);

                    script.exec(cx, threadScope);

                    if (getScriptInterfaces() != null && getScriptInterfaces().length > 0) {
                        String tmpscript = getBeanName() + " = new Packages." + getScriptInterfaces()[0].getName() + "(" + getBeanName() + ");";
                        cx.evaluateString(threadScope, tmpscript.toString(), "<cmd>", 1, null);
                    }

                    NativeJavaObject njo = (NativeJavaObject) cx.evaluateString(threadScope, getBeanName(), "<cmd>", 1, null);
                    setScriptResult(njo.unwrap());
                }
                catch (Exception e) {
                    throw new ScriptCompilationException("Could not exec rhino script: " + scriptSource, e);
                }
                finally {
                    cx.exit();
                }
            }
        }

        return getScriptResult();
    }
}