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

Example 51 with TemplateModelException

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

the class Execute method exec.

/**
 * Executes a method call.
 *
 * @param arguments a <tt>List</tt> of <tt>String</tt> objects containing the values
 * of the arguments passed to the method.
 * @return the <tt>TemplateModel</tt> produced by the method, or null.
 */
public Object exec(List arguments) throws TemplateModelException {
    String aExecute;
    StringBuilder aOutputBuffer = new StringBuilder();
    if (arguments.size() < 1) {
        throw new TemplateModelException("Need an argument to execute");
    }
    aExecute = (String) (arguments.get(0));
    try {
        Process exec = Runtime.getRuntime().exec(aExecute);
        // stdout from the process comes in here
        InputStream execOut = exec.getInputStream();
        try {
            Reader execReader = new InputStreamReader(execOut);
            char[] buffer = new char[OUTPUT_BUFFER_SIZE];
            int bytes_read = execReader.read(buffer);
            while (bytes_read > 0) {
                aOutputBuffer.append(buffer, 0, bytes_read);
                bytes_read = execReader.read(buffer);
            }
        } finally {
            execOut.close();
        }
    } catch (IOException ioe) {
        throw new TemplateModelException(ioe.getMessage());
    }
    return aOutputBuffer.toString();
}

Example 52 with TemplateModelException

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

the class CaptureOutput method getWriter.

public Writer getWriter(final Writer out, final Map args) throws TemplateModelException {
    String errmsg = "Must specify the name of the variable in " + "which to capture the output with the 'var' or 'local' or 'global' parameter.";
    if (args == null)
        throw new TemplateModelException(errmsg);
    boolean local = false, global = false;
    final TemplateModel nsModel = (TemplateModel) args.get("namespace");
    Object varNameModel = args.get("var");
    if (varNameModel == null) {
        varNameModel = args.get("local");
        if (varNameModel == null) {
            varNameModel = args.get("global");
            global = true;
        } else {
            local = true;
        }
        if (varNameModel == null) {
            throw new TemplateModelException(errmsg);
        }
    }
    if (args.size() == 2) {
        if (nsModel == null) {
            throw new TemplateModelException("Second parameter can only be namespace");
        }
        if (local) {
            throw new TemplateModelException("Cannot specify namespace for a local assignment");
        }
        if (global) {
            throw new TemplateModelException("Cannot specify namespace for a global assignment");
        }
        if (!(nsModel instanceof Environment.Namespace)) {
            throw new TemplateModelException("namespace parameter does not specify a namespace. It is a " + nsModel.getClass().getName());
        }
    } else if (args.size() != 1)
        throw new TemplateModelException("Bad parameters. Use only one of 'var' or 'local' or 'global' parameters.");
    if (!(varNameModel instanceof TemplateScalarModel)) {
        throw new TemplateModelException("'var' or 'local' or 'global' parameter doesn't evaluate to a string");
    }
    final String varName = ((TemplateScalarModel) varNameModel).getAsString();
    if (varName == null) {
        throw new TemplateModelException("'var' or 'local' or 'global' parameter evaluates to null string");
    }
    final StringBuilder buf = new StringBuilder();
    final Environment env = Environment.getCurrentEnvironment();
    final boolean localVar = local;
    final boolean globalVar = global;
    return new Writer() {

        @Override
        public void write(char[] cbuf, int off, int len) {
            buf.append(cbuf, off, len);
        }

        @Override
        public void flush() throws IOException {
            out.flush();
        }

        @Override
        public void close() throws IOException {
            SimpleScalar result = new SimpleScalar(buf.toString());
            try {
                if (localVar) {
                    env.setLocalVariable(varName, result);
                } else if (globalVar) {
                    env.setGlobalVariable(varName, result);
                } else {
                    if (nsModel == null) {
                        env.setVariable(varName, result);
                    } else {
                        ((Environment.Namespace) nsModel).put(varName, result);
                    }
                }
            } catch (java.lang.IllegalStateException ise) {
                // if somebody uses 'local' outside a macro
                throw new IOException("Could not set variable " + varName + ": " + ise.getMessage());
            }
        }
    };
}

Example 53 with TemplateModelException

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

the class ObjectConstructor method exec.

public Object exec(List args) throws TemplateModelException {
    if (args.isEmpty()) {
        throw new TemplateModelException("This method must have at least one argument, the name of the class to instantiate.");
    }
    String classname = args.get(0).toString();
    Class cl = null;
    try {
        cl = ClassUtil.forName(classname);
    } catch (Exception e) {
        throw new TemplateModelException(e.getMessage());
    }
    BeansWrapper bw = BeansWrapper.getDefaultInstance();
    Object obj = bw.newInstance(cl, args.subList(1, args.size()));
    return bw.wrap(obj);
}

Example 54 with TemplateModelException

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

the class StaticModelsTest method modelCaching.

@Test
public void modelCaching() throws Exception {
    BeansWrapper bw = new BeansWrapper(Configuration.VERSION_2_3_21);
    TemplateHashModel statics = bw.getStaticModels();
    TemplateHashModel s = (TemplateHashModel) statics.get(S.class.getName());
    assertNotNull(s);
    assertNotNull(s.get("F"));
    assertNotNull(s.get("m"));
    try {
        s.get("x");
        fail();
    } catch (TemplateModelException e) {
        assertThat(e.getMessage(), containsString("No such key"));
    }
    try {
        statics.get("no.such.ClassExists");
        fail();
    } catch (TemplateModelException e) {
        assertTrue(e.getCause() instanceof ClassNotFoundException);
    }
    TemplateModel f = s.get("F");
    assertTrue(f instanceof TemplateScalarModel);
    assertEquals(((TemplateScalarModel) f).getAsString(), "F OK");
    TemplateModel m = s.get("m");
    assertTrue(m instanceof TemplateMethodModelEx);
    assertEquals(((TemplateScalarModel) ((TemplateMethodModelEx) m).exec(new ArrayList())).getAsString(), "m OK");
    assertSame(s, statics.get(S.class.getName()));
    bw.clearClassIntrospecitonCache();
    TemplateHashModel sAfterClean = (TemplateHashModel) statics.get(S.class.getName());
    assertNotSame(s, sAfterClean);
    assertSame(sAfterClean, statics.get(S.class.getName()));
    assertNotNull(sAfterClean.get("F"));
    assertNotNull(sAfterClean.get("m"));
}

Example 55 with TemplateModelException

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

the class ErrorMessagesTest method markupOutputParameter.

@Test
public void markupOutputParameter() throws Exception {
    TemplateHTMLOutputModel html = HTMLOutputFormat.INSTANCE.fromMarkup("<p>a");
    for (Version ici : new Version[] { Configuration.VERSION_2_3_0, Configuration.VERSION_2_3_24 }) {
        BeansWrapper bw = new BeansWrapperBuilder(ici).build();
        TemplateHashModel thm = (TemplateHashModel) bw.wrap(new TestBean());
        {
            TemplateMethodModelEx m = (TemplateMethodModelEx) thm.get("m1");
            try {
                m.exec(Collections.singletonList(html));
                fail();
            } catch (TemplateModelException e) {
                assertThat(e.getMessage(), allOf(containsString("String"), containsString("convert"), containsString("markup_output"), containsString("Tip:"), containsString("?markup_string")));
            }
        }
        {
            TemplateMethodModelEx m = (TemplateMethodModelEx) thm.get("m2");
            try {
                m.exec(Collections.singletonList(html));
                fail();
            } catch (TemplateModelException e) {
                assertThat(e.getMessage(), allOf(containsString("Date"), containsString("convert"), containsString("markup_output"), not(containsString("?markup_string"))));
            }
        }
        for (String methodName : new String[] { "mOverloaded", "mOverloaded3" }) {
            TemplateMethodModelEx m = (TemplateMethodModelEx) thm.get(methodName);
            try {
                m.exec(Collections.singletonList(html));
                fail();
            } catch (TemplateModelException e) {
                assertThat(e.getMessage(), allOf(containsString("No compatible overloaded"), containsString("String"), containsString("markup_output"), containsString("Tip:"), containsString("?markup_string")));
            }
        }
        {
            TemplateMethodModelEx m = (TemplateMethodModelEx) thm.get("mOverloaded2");
            try {
                m.exec(Collections.singletonList(html));
                fail();
            } catch (TemplateModelException e) {
                assertThat(e.getMessage(), allOf(containsString("No compatible overloaded"), containsString("Integer"), containsString("markup_output"), not(containsString("?markup_string"))));
            }
        }
        {
            TemplateMethodModelEx m = (TemplateMethodModelEx) thm.get("mOverloaded4");
            Object r = m.exec(Collections.singletonList(html));
            if (r instanceof TemplateScalarModel) {
                r = ((TemplateScalarModel) r).getAsString();
            }
            assertEquals("<p>a", r);
        }
    }
}