Examples with TemplateModelException freemarker.template.TemplateModelException used on opensource projects

Example 56 with TemplateModelException

use of freemarker.template.TemplateModelException in project freemarker by apache.

the class ErrorMessagesTest method getterMessage.

@Test
public void getterMessage() throws TemplateModelException {
    BeansWrapper bw = new BeansWrapperBuilder(Configuration.VERSION_2_3_0).build();
    TemplateHashModel thm = (TemplateHashModel) bw.wrap(new TestBean());
    try {
        thm.get("foo");
    } catch (TemplateModelException e) {
        e.printStackTrace();
        final String msg = e.getMessage();
        assertThat(msg, containsString("\"foo\""));
        assertThat(msg, containsString("existing sub-variable"));
    }
    assertNull(thm.get("bar"));
}

Example 57 with TemplateModelException

use of freemarker.template.TemplateModelException in project freemarker by apache.

the class BeanModel method get.

/**
 * Uses Beans introspection to locate a property or method with name
 * matching the key name. If a method or property is found, it's wrapped
 * into {@link freemarker.template.TemplateMethodModelEx} (for a method or
 * indexed property), or evaluated on-the-fly and the return value wrapped
 * into appropriate model (for a non-indexed property) Models for various
 * properties and methods are cached on a per-class basis, so the costly
 * introspection is performed only once per property or method of a class.
 * (Side-note: this also implies that any class whose method has been called
 * will be strongly referred to by the framework and will not become
 * unloadable until this class has been unloaded first. Normally this is not
 * an issue, but can be in a rare scenario where you create many classes on-
 * the-fly. Also, as the cache grows with new classes and methods introduced
 * to the framework, it may appear as if it were leaking memory. The
 * framework does, however detect class reloads (if you happen to be in an
 * environment that does this kind of things--servlet containers do it when
 * they reload a web application) and flushes the cache. If no method or
 * property matching the key is found, the framework will try to invoke
 * methods with signature
 * <tt>non-void-return-type get(java.lang.String)</tt>,
 * then <tt>non-void-return-type get(java.lang.Object)</tt>, or
 * alternatively (if the wrapped object is a resource bundle)
 * <tt>Object getObject(java.lang.String)</tt>.
 * @throws TemplateModelException if there was no property nor method nor
 * a generic <tt>get</tt> method to invoke.
 */
public TemplateModel get(String key) throws TemplateModelException {
    Class<?> clazz = object.getClass();
    Map<Object, Object> classInfo = wrapper.getClassIntrospector().get(clazz);
    TemplateModel retval = null;
    try {
        if (wrapper.isMethodsShadowItems()) {
            Object fd = classInfo.get(key);
            if (fd != null) {
                retval = invokeThroughDescriptor(fd, classInfo);
            } else {
                retval = invokeGenericGet(classInfo, clazz, key);
            }
        } else {
            TemplateModel model = invokeGenericGet(classInfo, clazz, key);
            final TemplateModel nullModel = wrapper.wrap(null);
            if (model != nullModel && model != UNKNOWN) {
                return model;
            }
            Object fd = classInfo.get(key);
            if (fd != null) {
                retval = invokeThroughDescriptor(fd, classInfo);
                if (retval == UNKNOWN && model == nullModel) {
                    // This is the (somewhat subtle) case where the generic get() returns null
                    // and we have no bean info, so we respect the fact that
                    // the generic get() returns null and return null. (JR)
                    retval = nullModel;
                }
            }
        }
        if (retval == UNKNOWN) {
            if (wrapper.isStrict()) {
                throw new InvalidPropertyException("No such bean property: " + key);
            } else if (LOG.isDebugEnabled()) {
                logNoSuchKey(key, classInfo);
            }
            retval = wrapper.wrap(null);
        }
        return retval;
    } catch (TemplateModelException e) {
        throw e;
    } catch (Exception e) {
        throw new _TemplateModelException(e, "An error has occurred when reading existing sub-variable ", new _DelayedJQuote(key), "; see cause exception! The type of the containing value was: ", new _DelayedFTLTypeDescription(this));
    }
}

Example 58 with TemplateModelException

use of freemarker.template.TemplateModelException in project freemarker by apache.

the class StaticModel method populate.

private void populate() throws TemplateModelException {
    if (!Modifier.isPublic(clazz.getModifiers())) {
        throw new TemplateModelException("Can't wrap the non-public class " + clazz.getName());
    }
    if (wrapper.getExposureLevel() == BeansWrapper.EXPOSE_NOTHING) {
        return;
    }
    Field[] fields = clazz.getFields();
    for (int i = 0; i < fields.length; ++i) {
        Field field = fields[i];
        int mod = field.getModifiers();
        if (Modifier.isPublic(mod) && Modifier.isStatic(mod)) {
            if (Modifier.isFinal(mod))
                try {
                    // public static final fields are evaluated once and
                    // stored in the map
                    map.put(field.getName(), wrapper.getOuterIdentity().wrap(field.get(null)));
                } catch (IllegalAccessException e) {
                // Intentionally ignored
                }
            else
                // This is a special flagging value: Field in the map means
                // that this is a non-final field, and it must be evaluated
                // on each get() call.
                map.put(field.getName(), field);
        }
    }
    if (wrapper.getExposureLevel() < BeansWrapper.EXPOSE_PROPERTIES_ONLY) {
        Method[] methods = clazz.getMethods();
        for (int i = 0; i < methods.length; ++i) {
            Method method = methods[i];
            int mod = method.getModifiers();
            if (Modifier.isPublic(mod) && Modifier.isStatic(mod) && wrapper.getClassIntrospector().isAllowedToExpose(method)) {
                String name = method.getName();
                Object obj = map.get(name);
                if (obj instanceof Method) {
                    OverloadedMethods overloadedMethods = new OverloadedMethods(wrapper.is2321Bugfixed());
                    overloadedMethods.addMethod((Method) obj);
                    overloadedMethods.addMethod(method);
                    map.put(name, overloadedMethods);
                } else if (obj instanceof OverloadedMethods) {
                    OverloadedMethods overloadedMethods = (OverloadedMethods) obj;
                    overloadedMethods.addMethod(method);
                } else {
                    if (obj != null) {
                        if (LOG.isInfoEnabled()) {
                            LOG.info("Overwriting value [" + obj + "] for " + " key '" + name + "' with [" + method + "] in static model for " + clazz.getName());
                        }
                    }
                    map.put(name, method);
                }
            }
        }
        for (Iterator entries = map.entrySet().iterator(); entries.hasNext(); ) {
            Map.Entry entry = (Map.Entry) entries.next();
            Object value = entry.getValue();
            if (value instanceof Method) {
                Method method = (Method) value;
                entry.setValue(new SimpleMethodModel(null, method, method.getParameterTypes(), wrapper));
            } else if (value instanceof OverloadedMethods) {
                entry.setValue(new OverloadedMethodsModel(null, (OverloadedMethods) value, wrapper));
            }
        }
    }
}

Example 59 with TemplateModelException

use of freemarker.template.TemplateModelException in project freemarker by apache.

the class JaxenXPathSupport method executeQuery.

public TemplateModel executeQuery(Object context, String xpathQuery) throws TemplateModelException {
    try {
        BaseXPath xpath;
        Map<String, BaseXPath> xpathCache = (Map<String, BaseXPath>) XPATH_CACHE_ATTR.get();
        synchronized (xpathCache) {
            xpath = xpathCache.get(xpathQuery);
            if (xpath == null) {
                xpath = new BaseXPath(xpathQuery, FM_DOM_NAVIGATOR);
                xpath.setNamespaceContext(customNamespaceContext);
                xpath.setFunctionContext(FM_FUNCTION_CONTEXT);
                xpath.setVariableContext(FM_VARIABLE_CONTEXT);
                xpathCache.put(xpathQuery, xpath);
            }
        }
        List result = xpath.selectNodes(context != null ? context : EMPTY_ARRAYLIST);
        if (result.size() == 1) {
            // [2.4] Use the proper object wrapper (argument in 2.4)
            return ObjectWrapper.DEFAULT_WRAPPER.wrap(result.get(0));
        }
        NodeListModel nlm = new NodeListModel(result, null);
        nlm.xpathSupport = this;
        return nlm;
    } catch (UndeclaredThrowableException e) {
        Throwable t = e.getUndeclaredThrowable();
        if (t instanceof TemplateModelException) {
            throw (TemplateModelException) t;
        }
        throw e;
    } catch (JaxenException je) {
        throw new TemplateModelException(je);
    }
}

Example 60 with TemplateModelException

use of freemarker.template.TemplateModelException in project freemarker by apache.

the class SunInternalXalanXPathSupport method executeQuery.

public synchronized TemplateModel executeQuery(Object context, String xpathQuery) throws TemplateModelException {
    if (!(context instanceof Node)) {
        if (context != null) {
            if (isNodeList(context)) {
                int cnt = ((List) context).size();
                if (cnt != 0) {
                    throw new TemplateModelException("Cannot perform an XPath query against a node set of " + cnt + " nodes. Expecting a single node." + ERRMSG_RECOMMEND_JAXEN);
                } else {
                    throw new TemplateModelException(ERRMSG_EMPTY_NODE_SET);
                }
            } else {
                throw new TemplateModelException("Cannot perform an XPath query against a " + context.getClass().getName() + ". Expecting a single org.w3c.dom.Node.");
            }
        } else {
            throw new TemplateModelException(ERRMSG_EMPTY_NODE_SET);
        }
    }
    Node node = (Node) context;
    try {
        XPath xpath = new XPath(xpathQuery, null, customPrefixResolver, XPath.SELECT, null);
        int ctxtNode = xpathContext.getDTMHandleFromNode(node);
        XObject xresult = xpath.execute(xpathContext, ctxtNode, customPrefixResolver);
        if (xresult instanceof XNodeSet) {
            NodeListModel result = new NodeListModel(node);
            result.xpathSupport = this;
            NodeIterator nodeIterator = xresult.nodeset();
            Node n;
            do {
                n = nodeIterator.nextNode();
                if (n != null) {
                    result.add(n);
                }
            } while (n != null);
            return result.size() == 1 ? result.get(0) : result;
        }
        if (xresult instanceof XBoolean) {
            return ((XBoolean) xresult).bool() ? TemplateBooleanModel.TRUE : TemplateBooleanModel.FALSE;
        }
        if (xresult instanceof XNull) {
            return null;
        }
        if (xresult instanceof XString) {
            return new SimpleScalar(xresult.toString());
        }
        if (xresult instanceof XNumber) {
            return new SimpleNumber(Double.valueOf(((XNumber) xresult).num()));
        }
        throw new TemplateModelException("Cannot deal with type: " + xresult.getClass().getName());
    } catch (TransformerException te) {
        throw new TemplateModelException(te);
    }
}