Examples with ScriptEvaluationException org.apache.sling.api.scripting.ScriptEvaluationException used on opensource projects

Example 1 with ScriptEvaluationException

use of org.apache.sling.api.scripting.ScriptEvaluationException in project sling by apache.

the class DefaultSlingScript method service.

/**
     * @see javax.servlet.Servlet#service(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
     */
public void service(ServletRequest req, ServletResponse res) {
    final SlingHttpServletRequest request = (SlingHttpServletRequest) req;
    try {
        // prepare the properties for the script
        final SlingBindings props = new SlingBindings();
        props.setRequest((SlingHttpServletRequest) req);
        props.setResponse((SlingHttpServletResponse) res);
        // try to set content type (unless included)
        if (request.getAttribute(SlingConstants.ATTR_INCLUDE_SERVLET_PATH) == null) {
            final String contentType = request.getResponseContentType();
            if (contentType != null) {
                res.setContentType(contentType);
                // see SLING-679
                if (contentType.startsWith("text/")) {
                    res.setCharacterEncoding("UTF-8");
                }
            } else {
                LOGGER.debug("service: No response content type defined for request {}.", request.getRequestURI());
            }
        } else {
            LOGGER.debug("service: Included request, not setting content type and encoding");
        }
        // evaluate the script now using the ScriptEngine
        eval(props);
    } catch (ScriptEvaluationException see) {
        // log in the request progress tracker
        logScriptError(request, see);
        throw see;
    } catch (SlingException e) {
        // log in the request progress tracker
        logScriptError(request, e);
        throw e;
    } catch (Exception e) {
        // log in the request progress tracker
        logScriptError(request, e);
        throw new SlingException("Cannot get DefaultSlingScript: " + e.getMessage(), e);
    }
}

Example 2 with ScriptEvaluationException

use of org.apache.sling.api.scripting.ScriptEvaluationException in project sling by apache.

the class JspServletWrapper method handleJspExceptionInternal.

/**
     * Returns only a ServletException or a SlingException
     */
private Exception handleJspExceptionInternal(final Exception ex) throws ServletException {
    Throwable realException = ex;
    String exMessage = "";
    if (ex instanceof ServletException) {
        realException = ((ServletException) ex).getRootCause();
        // root cause might be null (eg. for a JasperException ex)
        if (realException == null) {
            realException = ex;
        } else {
            exMessage = ex.toString();
        }
    }
    // avoid nested ScriptEvaluationExceptions (eg. in nested jsp includes)
    while (realException instanceof ScriptEvaluationException) {
        realException = realException.getCause();
    }
    try {
        // First identify the stack frame in the trace that represents the JSP
        StackTraceElement[] frames = realException.getStackTrace();
        StackTraceElement jspFrame = null;
        for (int i = 0; i < frames.length; ++i) {
            if (frames[i].getClassName().equals(this.theServlet.getClass().getName())) {
                jspFrame = frames[i];
                break;
            }
        }
        if (jspFrame == null) {
            // to the generated servlet class, we can't really add anything
            if (ex instanceof ServletException) {
                return ex;
            }
            return new SlingException(ex) {
            };
        }
        int javaLineNumber = jspFrame.getLineNumber();
        JavacErrorDetail detail = ErrorDispatcher.createJavacError(jspFrame.getMethodName(), this.ctxt.getCompiler().getPageNodes(), null, javaLineNumber, ctxt);
        // If the line number is less than one we couldn't find out
        // where in the JSP things went wrong
        int jspLineNumber = detail.getJspBeginLineNumber();
        if (jspLineNumber < 1) {
            if (realException instanceof ServletException) {
                return (ServletException) realException;
            }
            return new SlingException(exMessage, realException);
        }
        if (options.getDisplaySourceFragment() && detail.getJspExtract() != null) {
            return new SlingException(Localizer.getMessage("jsp.exception", detail.getJspFileName(), "" + jspLineNumber) + "\n\n" + detail.getJspExtract() + "\n", realException);
        }
        return new SlingException(Localizer.getMessage("jsp.exception", detail.getJspFileName(), "" + jspLineNumber), realException);
    } catch (final Exception je) {
        // If anything goes wrong, just revert to the original behaviour
        if (realException instanceof ServletException) {
            return (ServletException) realException;
        }
        return new SlingException(exMessage, realException);
    }
}

Example 3 with ScriptEvaluationException

use of org.apache.sling.api.scripting.ScriptEvaluationException in project sling by apache.

the class DefaultSlingScript method call.

/**
     * @see org.apache.sling.api.scripting.SlingScript#call(org.apache.sling.api.scripting.SlingBindings, java.lang.String, java.lang.Object[])
     * @throws ScriptEvaluationException
     */
public Object call(SlingBindings props, String method, Object... args) {
    Bindings bindings = null;
    Reader reader = null;
    boolean disposeScriptHelper = !props.containsKey(SLING);
    ResourceResolver oldResolver = null;
    try {
        bindings = verifySlingBindings(props);
        // use final variable for inner class!
        final Bindings b = bindings;
        // create script context
        final ScriptContext ctx = new ScriptContext() {

            private Bindings globalScope;

            private Bindings engineScope = b;

            private Writer writer = (Writer) b.get(OUT);

            private Writer errorWriter = new LogWriter((Logger) b.get(LOG));

            private Reader reader = (Reader) b.get(READER);

            private Bindings slingScope = new SimpleBindings();

            /**
                 * @see javax.script.ScriptContext#setBindings(javax.script.Bindings, int)
                 */
            public void setBindings(final Bindings bindings, final int scope) {
                switch(scope) {
                    case SlingScriptConstants.SLING_SCOPE:
                        this.slingScope = bindings;
                        break;
                    case 100:
                        if (bindings == null)
                            throw new NullPointerException("Bindings for ENGINE scope is null");
                        this.engineScope = bindings;
                        break;
                    case 200:
                        this.globalScope = bindings;
                        break;
                    default:
                        throw new IllegalArgumentException("Invalid scope");
                }
            }

            /**
                 * @see javax.script.ScriptContext#getBindings(int)
                 */
            public Bindings getBindings(final int scope) {
                switch(scope) {
                    case SlingScriptConstants.SLING_SCOPE:
                        return slingScope;
                    case 100:
                        return this.engineScope;
                    case 200:
                        return this.globalScope;
                }
                throw new IllegalArgumentException("Invalid scope");
            }

            /**
                 * @see javax.script.ScriptContext#setAttribute(java.lang.String, java.lang.Object, int)
                 */
            public void setAttribute(final String name, final Object value, final int scope) {
                if (name == null)
                    throw new IllegalArgumentException("Name is null");
                final Bindings bindings = getBindings(scope);
                if (bindings != null) {
                    bindings.put(name, value);
                }
            }

            /**
                 * @see javax.script.ScriptContext#getAttribute(java.lang.String, int)
                 */
            public Object getAttribute(final String name, final int scope) {
                if (name == null)
                    throw new IllegalArgumentException("Name is null");
                final Bindings bindings = getBindings(scope);
                if (bindings != null) {
                    return bindings.get(name);
                }
                return null;
            }

            /**
                 * @see javax.script.ScriptContext#removeAttribute(java.lang.String, int)
                 */
            public Object removeAttribute(final String name, final int scope) {
                if (name == null)
                    throw new IllegalArgumentException("Name is null");
                final Bindings bindings = getBindings(scope);
                if (bindings != null) {
                    return bindings.remove(name);
                }
                return null;
            }

            /**
                 * @see javax.script.ScriptContext#getAttribute(java.lang.String)
                 */
            public Object getAttribute(String name) {
                if (name == null)
                    throw new IllegalArgumentException("Name is null");
                for (final int scope : SCOPES) {
                    final Bindings bindings = getBindings(scope);
                    if (bindings != null) {
                        final Object o = bindings.get(name);
                        if (o != null) {
                            return o;
                        }
                    }
                }
                return null;
            }

            /**
                 * @see javax.script.ScriptContext#getAttributesScope(java.lang.String)
                 */
            public int getAttributesScope(String name) {
                if (name == null)
                    throw new IllegalArgumentException("Name is null");
                for (final int scope : SCOPES) {
                    if ((getBindings(scope) != null) && (getBindings(scope).containsKey(name))) {
                        return scope;
                    }
                }
                return -1;
            }

            /**
                 * @see javax.script.ScriptContext#getScopes()
                 */
            public List<Integer> getScopes() {
                return Arrays.asList(SCOPES);
            }

            /**
                 * @see javax.script.ScriptContext#getWriter()
                 */
            public Writer getWriter() {
                return this.writer;
            }

            /**
                 * @see javax.script.ScriptContext#getErrorWriter()
                 */
            public Writer getErrorWriter() {
                return this.errorWriter;
            }

            /**
                 * @see javax.script.ScriptContext#setWriter(java.io.Writer)
                 */
            public void setWriter(Writer writer) {
                this.writer = writer;
            }

            /**
                 * @see javax.script.ScriptContext#setErrorWriter(java.io.Writer)
                 */
            public void setErrorWriter(Writer writer) {
                this.errorWriter = writer;
            }

            /**
                 * @see javax.script.ScriptContext#getReader()
                 */
            public Reader getReader() {
                return this.reader;
            }

            /**
                 * @see javax.script.ScriptContext#setReader(java.io.Reader)
                 */
            public void setReader(Reader reader) {
                this.reader = reader;
            }
        };
        // set the current resource resolver if a request is available from the bindings
        if (props.getRequest() != null) {
            oldResolver = requestResourceResolver.get();
            requestResourceResolver.set(props.getRequest().getResourceResolver());
        }
        // set the script resource resolver as an attribute
        ctx.setAttribute(SlingScriptConstants.ATTR_SCRIPT_RESOURCE_RESOLVER, this.scriptResource.getResourceResolver(), SlingScriptConstants.SLING_SCOPE);
        reader = getScriptReader();
        if (method != null && !(this.scriptEngine instanceof Invocable)) {
            reader = getWrapperReader(reader, method, args);
        }
        // evaluate the script
        final Object result;
        if (method == null && this.scriptEngine instanceof Compilable) {
            CachedScript cachedScript = scriptCache.getScript(scriptName);
            if (cachedScript == null) {
                ScriptNameAwareReader snReader = new ScriptNameAwareReader(reader, scriptName);
                CompiledScript compiledScript = ((Compilable) scriptEngine).compile(snReader);
                cachedScript = new CachedScriptImpl(scriptName, compiledScript);
                scriptCache.putScript(cachedScript);
                LOGGER.debug("Adding {} to the script cache.", scriptName);
            } else {
                LOGGER.debug("Script {} was already cached.", scriptName);
            }
            result = cachedScript.getCompiledScript().eval(ctx);
        } else {
            result = scriptEngine.eval(reader, ctx);
        }
        // call method - if supplied and script engine supports direct invocation
        if (method != null && (this.scriptEngine instanceof Invocable)) {
            try {
                ((Invocable) scriptEngine).invokeFunction(method, Arrays.asList(args).toArray());
            } catch (NoSuchMethodException e) {
                throw new ScriptEvaluationException(this.scriptName, "Method " + method + " not found in script.", e);
            }
        }
        // optionall flush the output channel
        Object flushObject = bindings.get(FLUSH);
        if (flushObject instanceof Boolean && (Boolean) flushObject) {
            ctx.getWriter().flush();
        }
        // allways flush the error channel
        ctx.getErrorWriter().flush();
        return result;
    } catch (IOException ioe) {
        throw new ScriptEvaluationException(this.scriptName, ioe.getMessage(), ioe);
    } catch (ScriptException se) {
        Throwable cause = (se.getCause() == null) ? se : se.getCause();
        throw new ScriptEvaluationException(this.scriptName, se.getMessage(), cause);
    } finally {
        if (props.getRequest() != null) {
            requestResourceResolver.set(oldResolver);
        }
        // close the script reader (SLING-380)
        if (reader != null) {
            try {
                reader.close();
            } catch (IOException ignore) {
            // don't care
            }
        }
        // dispose of the SlingScriptHelper
        if (bindings != null && disposeScriptHelper) {
            final InternalScriptHelper helper = (InternalScriptHelper) bindings.get(SLING);
            if (helper != null) {
                helper.cleanup();
            }
        }
    }
}