Examples of org.apache.velocity.app.VelocityEngine.evaluate()

Class org.apache.velocity.app.VelocityEngine

Examples of org.apache.velocity.app.VelocityEngine.evaluate()

org.apache.velocity.app.VelocityEngine.evaluate()
renders the input string using the context into the output writer. To be used when a template is dynamically constructed, or want to use Velocity as a token replacer. @param context context to use in rendering input string @param out Writer in which to render the output @param logTag string to be used as the template name for log messages in case of error @param instring input string containing the VTL to be rendered @return true if successful, false otherwise. If false, seeVelocity runtime log

    FileWriter writer = new FileWriter(fileHTML);
    VelocityEngine ve = new VelocityEngine();
    /* disable logging */
    ve.setProperty(VelocityEngine.RUNTIME_LOG_LOGSYSTEM_CLASS,
            "org.apache.velocity.runtime.log.NullLogChute");
    ve.evaluate(context, writer, "index", template);
    writer.flush();
    writer.close();
  }


  private void writeHtmlForState(StateVertix state, List<RenderedCandidateElement> rendered)

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    FileWriter writer = new FileWriter(fileHTML);
    VelocityEngine ve = new VelocityEngine();
    /* disable logging */
    ve.setProperty(VelocityEngine.RUNTIME_LOG_LOGSYSTEM_CLASS,
            "org.apache.velocity.runtime.log.NullLogChute");
    ve.evaluate(context, writer, state.getName(), template);
    writer.flush();
    writer.close();
  }


  private void findElementAndAddToMap(StateVertix state, CandidateElement element) {

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        Context velocityContext = new VelocityContext(variableMap);


        // let velocity parse and generate the result in buffer
        VelocityEngine engine = getVelocityEngine();
        log.debug("Velocity is evaluating using velocity context: {}", variableMap);
        engine.evaluate(velocityContext, buffer, logTag, reader);


        // now lets output the results to the exchange
        Message out = exchange.getOut();
        out.setBody(buffer.toString());

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        // let velocity parse and generate the result in buffer
        VelocityEngine engine = getVelocityEngine();
        if (log.isDebugEnabled()) {
            log.debug("Velocity is evaluating using velocity context: " + variableMap);
        }
        engine.evaluate(velocityContext, buffer, logTag, reader);


        // now lets output the results to the exchange
        Message out = exchange.getOut();
        out.setBody(buffer.toString());

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        Context velocityContext = new VelocityContext(variableMap);


        // let velocity parse and generate the result in buffer
        VelocityEngine engine = getVelocityEngine();
        log.debug("Velocity is evaluating using velocity context: {}", variableMap);
        engine.evaluate(velocityContext, buffer, logTag, reader);


        // now lets output the results to the exchange
        Message out = exchange.getOut();
        out.setBody(buffer.toString());
        out.setHeaders(exchange.getIn().getHeaders());

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        }


        // let velocity parse and generate the result in buffer
        VelocityEngine engine = getVelocityEngine();
        log.debug("Velocity is evaluating using velocity context: {}", velocityContext);
        engine.evaluate(velocityContext, buffer, logTag, reader);


        // now lets output the results to the exchange
        Message out = exchange.getOut();
        out.setBody(buffer.toString());
        out.setHeaders(exchange.getIn().getHeaders());

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        Writer writer = new StringWriter();


        try
        {
            ve.evaluate(context,writer,"testMacroInvoke", "#macro(   foo $a) $a #end #foo(woogie)");
            fail("Should have thown a ParseErrorException");
        }
        catch (org.apache.velocity.exception.TemplateInitException e)
        {
            assertEquals("testMacroInvoke",e.getTemplateName());

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        Writer writer = new StringWriter();
        
        try 
        {
            ve.evaluate(context,writer,"testMacroInvoke", "#macro(foo $a) $a #end #foo('test1' 'test2')");     
            fail("Should have thown a ParseErrorException");
        } 
        catch (ParseErrorException e) 
        {
            assertEquals("testMacroInvoke",e.getTemplateName());

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        Writer writer = new StringWriter();


        // will not throw an exception
        try 
        {
            ve.evaluate(context,writer,"testMacroInvoke", "#macro(foo $a) $a #end #foo('test1' 'test2')");     
        }
        finally
        {
            if (writer != null)
            {

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        context.put("a1","test");
        context.put("b1","test");
        Writer writer = new StringWriter();


        ve.evaluate(context,writer,"test","$a1 $c1 $a1.length() $a1.foobar()");


        List errors = reporter.getInvalidReferences();
        assertEquals(2,errors.size());
        assertEquals("$c1",((InvalidReferenceInfo) errors.get(0)).getInvalidReference());
        assertEquals("$a1.foobar()",((InvalidReferenceInfo) errors.get(1)).getInvalidReference());

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