Examples of freemarker.template.TemplateModelException

freemarker.template.TemplateModelException
Template model implementation classes should throw this exception if requested data cannot be retrieved. @version $Id: TemplateModelException.java,v 1.14 2003/04/22 21:03:22 revusky Exp $

                this.env = env;
            }


            public Object exec(List args) throws TemplateModelException {
                if (args.size() != 1) {
                    throw new TemplateModelException(
                        "?" + biName + "(...) expects exactly 1 argument, but had "
                        + args.size() + ".");
                }
                
                TemplateModel tzArgTM = (TemplateModel) args.get(0);
                TimeZone tzArg; 
                Object adaptedObj;
                if (tzArgTM instanceof AdapterTemplateModel
                        && (adaptedObj =
                                ((AdapterTemplateModel) tzArgTM)
                                .getAdaptedObject(TimeZone.class))
                            instanceof TimeZone) {
                    tzArg = (TimeZone) adaptedObj;                    
                } else if (tzArgTM instanceof TemplateScalarModel) {
                    String tzName = ((TemplateScalarModel) tzArgTM).getAsString();
                    try {
                        tzArg = DateUtil.getTimeZone(tzName);
                    } catch (UnrecognizedTimeZoneException e) {
                        throw new TemplateModelException(
                                "The time zone string specified for ?" + biName +
                                "(...) is not recognized as a valid time zone name: " +
                                StringUtil.jQuote(tzName));
                    }
 
                } else {
                    throw new TemplateModelException(
                            "The argument to ?" + biName +
                            "(...) must be a String or a " +
                            "java.util.TimeZone but it was a " +
                            (tzArgTM != null ? tzArgTM.getClass().getName() : "null") +
                            ".");

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            try {
                TemplateNumberModel num = (TemplateNumberModel)args.get(BUFFER_SIZE_KEY);
                if (num != null)
                    bufferSize = num.getAsNumber().intValue();
            } catch (ClassCastException e) {
                throw new TemplateModelException("Expecting numerical argument to " + BUFFER_SIZE_KEY);
            }
            try {
                TemplateBooleanModel flag = (TemplateBooleanModel)args.get(SINGLE_LINE_KEY);
                if (flag != null)
                    singleLine = flag.getAsBoolean();
            } catch (ClassCastException e) {
                throw new TemplateModelException("Expecting boolean argument to " + SINGLE_LINE_KEY);
            }
        }
        return new StandardCompressWriter(out, bufferSize, singleLine);
    }

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            return map;
        }
        if (permissive) {
            return model;
        }
        throw new TemplateModelException("Cannot deep-unwrap model of type " + model.getClass().getName());
    }

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                }
                // No mappings found, try treating the path as explicit path
                switch(getUriType(uri)) {
                    case ABS_URI: {
                        // Absolute URIs can only be resolved through mapping
                        throw new TemplateModelException("No mapping defined for " + uri);
                    }
                    case NOROOT_REL_URI: {
                        // Resolve URI relative to the current page
                        uri = resolveRelativeUri(uri);
                        // Intentional fallthrough
                    }
                    case ROOT_REL_URI: {
                        // If it is a .jar or .zip, add default TLD entry within it.
                        if(uri.endsWith(".jar") || uri.endsWith(".zip")) {
                            return loadTaglib(new TldPath(uri, DEFAULT_JAR_TLD), uri);
                        }
                        // Treat the URI verbatim.
                        return loadTaglib(new TldPath(uri), uri);
                    }
                    default: {
                        throw new RuntimeException("Cannot happen");
                    }
                }
            }
            catch(TemplateModelException e) {
                throw e;
            }
            catch(RuntimeException e) {
                throw e;
            }
            catch(Exception e) {
                throw new TemplateModelException("Could not load taglib information for " + uri, e);
            }
        }
    }

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        return taglib;
    }


    private static int getUriType(String uri) throws TemplateModelException {
        if(uri == null) {
            throw new TemplateModelException("null is not a valid URI");
        }
        if(uri.length() == 0) {
          throw new TemplateModelException("empty string is not a valid URI");
        }
        final char c0 = uri.charAt(0);
        if(c0 == '/') {
            return ROOT_REL_URI;
        }

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            }
            else {
                return '/' + uri;
            }
        }
        throw new TemplateModelException(
            "Can't resolve relative URI " + uri + 
            " as request URL information is unavailable.");
    }

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        {
            throw e;
        }
        catch(Exception e)
        {
            throw new TemplateModelException("get(" + key + ") failed on " +
                "instance of " + object.getClass().getName(), e);
        }
    }

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        {
            final TldParser tldParser = new TldParser();
            final String filePath = tldPath.filePath;
            final InputStream in = ctx.getResourceAsStream(filePath);
            if(in == null) {
                throw new TemplateModelException("Could not find webapp resource " +
                    filePath + " for URI " + uri);
            }
            final String fileUrl = ctx.getResource(filePath).toExternalForm();
            try {
                final String jarItemPath = tldPath.jarItemPath;
                if(jarItemPath != null) {
                    final ZipInputStream zin = new ZipInputStream(in);
                    for(;;) {
                        final ZipEntry ze = zin.getNextEntry();
                        if(ze == null) {
                            throw new TemplateModelException(
                                "Could not find JAR entry " + jarItemPath + 
                                " inside webapp resource " + filePath + 
                                " for URI " + uri);
                        }
                        final String zname = ze.getName();
                        if(zname.equals(jarItemPath)) {
                            parseXml(zin, "jar:" + fileUrl + "!" + zname, tldParser);
                            break;
                        }
                    }
                }
                else {
                    parseXml(in, fileUrl, tldParser);
                }
            }
            finally {
                in.close();
            }
            EventForwarding eventForwarding = EventForwarding.getInstance(ctx);
            if(eventForwarding != null) {
                eventForwarding.addListeners(tldParser.getListeners());
            }
            else if(tldParser.getListeners().size() > 0) {
                throw new TemplateModelException(
                    "Event listeners specified in the TLD could not be " +
                    " registered since the web application doesn't have a" +
                    " listener of class " + EventForwarding.class.getName() + 
                    ". To remedy this, add this element to web.xml:\n" +
                    "| <listener>\n" +

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                    // This is called so that we trigger the
                    // class-reloading detector. If there was a class reload,
                    // the wrapper will in turn call our clearCache method.
                    wrapper.introspectClass(clazz);
                } catch(Exception e) {
                    throw new TemplateModelException(e);
                }
                cache.put(key, model);
            }
            return model;
        }

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     * expression to this model's nodelist.
     * @see freemarker.template.TemplateMethodModel#exec(List)
     */
    public Object exec(List arguments) throws TemplateModelException {
        if(arguments.size() != 1) {
            throw new TemplateModelException(
                "Expecting exactly one argument - an XPath expression");
        }
        return deriveModel(navigator.applyXPath(nodes, (String)arguments.get(0), namespaces));
    }

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