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 $

                // Namespace prefix specified
                localName = key.substring(colon + 1);
                String prefix = key.substring(0, colon);
                namespaceUri = namespaces.translateNamespacePrefixToUri(prefix);
                if(namespaceUri == null) {
                    throw new TemplateModelException("Namespace prefix " + prefix + " is not registered.");
                }
            }
            if(localName.charAt(0) == '@') {
                op = navigator.getAttributeOperator();
                localName = localName.substring(1);
            }
            else {
                op = navigator.getChildrenOperator();
            }
        }
        List result = new ArrayList();
        for (Iterator iter = nodes.iterator(); iter.hasNext();) {
            try {
                op.process(iter.next(), localName, namespaceUri, result);
            }
            catch(RuntimeException e) {
                throw new TemplateModelException(e);
            }
        }
        return deriveModel(result);
    }

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        public Object exec(List arguments)
        throws
        TemplateModelException
        {
            if (arguments.size() != 2)
                throw new TemplateModelException("_registerNamespace(prefix, uri) requires two arguments");


            registerNamespace((String)arguments.get(0), (String)arguments.get(1));


            return TemplateScalarModel.EMPTY_STRING;
        }

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        // If the set for the error messages is empty, return the retval
        if(s == null) {
            return s1;
        }
        // Else throw an exception signaling ambiguity
        throw new TemplateModelException(
            "Value for node " + property + " is ambiguos: " + s);
    }

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        public Object exec(List arguments)
        throws
        TemplateModelException
        {
            if (arguments == null || arguments.size() == 0)
                throw new TemplateModelException("_type expects exactly one argument");
            String arg = (String)arguments.get(0);
            boolean invert = arg.indexOf('!') != -1;
            // NOTE: true in each of these variables means 'remove', not 'keep'
            // This is so we don't invert their values in the loop. So,
            // a is true <--> (a is not present in the string) xor invert.

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        }
        catch(RuntimeException e) {
            throw e;
        }
        catch(Exception e) {
            throw new TemplateModelException(e);
        }
    }

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                Object arg = bwrapper.unwrap((TemplateModel)entry.getValue());
                aarg[0] = arg;
                Method m = (Method)propertySetters.get(entry.getKey());
                if (m == null) {
                    if (dynaSetter == null) {
                        throw new TemplateModelException("Unknown property "
                                + StringUtil.jQuote(entry.getKey().toString())
                                + " on instance of " + tagClass.getName());
                    }
                    else {
                        dynaSetter.invoke(tag, new Object[] {null, entry.getKey(), aarg[0]});

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            boolean usesAdapter;
            if(out instanceof JspWriter) {
                // This is just a sanity check. If it were JDK 1.4-only,
                // we'd use an assert.
                if(out != pageContext.getOut()) {
                    throw new TemplateModelException(
                        "out != pageContext.getOut(). Out is " + 
                        out + " pageContext.getOut() is " +
                        pageContext.getOut());
                }
                usesAdapter = false;
            }
            else {                
                out = new JspWriterAdapter(out);
                pageContext.pushWriter((JspWriter)out);
                usesAdapter = true;
            }
            JspWriter w = new TagWriter(out, tag, pageContext, usesAdapter);
            pageContext.pushTopTag(tag);
            pageContext.pushWriter(w);
            return w;
        }
        catch(TemplateModelException e) {
            throw e;
        }
        catch(RuntimeException e) {
            throw e;
        }
        catch(Exception e) {
            throw new TemplateModelException(e);
        }
    }

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                            BodyTag btag = (BodyTag)tag;
                            btag.setBodyContent(this);
                            btag.doInitBody();
                        }
                        else {
                            throw new TemplateModelException("Can't buffer body since " + tag.getClass().getName() + " does not implement BodyTag.");
                        }
                        // Intentional fall-through
                    }
                    case Tag.EVAL_BODY_INCLUDE: {
                        return TransformControl.EVALUATE_BODY;
                    }
                    default: {
                        throw new RuntimeException("Illegal return value " + dst + " from " + tag.getClass().getName() + ".doStartTag()");
                    }
                }
            }
            catch(JspException e) {
                throw new TemplateModelException(e.getMessage(), e);
            }
        }

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                        }
                        case IterationTag.EVAL_BODY_AGAIN: {
                            return REPEAT_EVALUATION;
                        }
                        default: {
                            throw new TemplateModelException("Unexpected return value " + dab + "from " + tag.getClass().getName() + ".doAfterBody()");
                        }
                    }
                }
                endEvaluation();
                return END_EVALUATION;
            }
            catch(JspException e) {
                throw new TemplateModelException(e);
            }
        }

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    public Object unwrap(TemplateModel model, Class hint) 
    throws TemplateModelException
    {
        final Object obj = unwrapInternal(model, hint);
        if(obj == CAN_NOT_UNWRAP) {
          throw new TemplateModelException("Can not unwrap model of type " + 
              model.getClass().getName() + " to type " + hint.getName());
        }
        return obj;
    }

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