Primitive first draft of a dump directive for Freemarker templates.

webapp/src/edu/cornell/mannlib/vitro/webapp/web/directives/DumpDirective.java

@@ -0,0 +1,89 @@
+package edu.cornell.mannlib.vitro.webapp.web.directives;
+
+import java.io.IOException;
+import java.io.Writer;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Set;
+
+import freemarker.core.Environment;
+import freemarker.template.Configuration;
+import freemarker.template.SimpleScalar;
+import freemarker.template.TemplateDirectiveBody;
+import freemarker.template.TemplateDirectiveModel;
+import freemarker.template.TemplateException;
+import freemarker.template.TemplateHashModel;
+import freemarker.template.TemplateModel;
+import freemarker.template.TemplateModelException;
+import freemarker.template.utility.DeepUnwrap;
+
+public class DumpDirective implements TemplateDirectiveModel {
+
+    @SuppressWarnings("unchecked")
+    @Override
+    public void execute(Environment env, Map params, TemplateModel[] loopVars,
+            TemplateDirectiveBody body) throws TemplateException, IOException {
+
+        if (loopVars.length != 0) {
+            throw new TemplateModelException(
+                "The dump directive doesn't allow loop variables.");
+        }
+        if (body != null) {
+            throw new TemplateModelException(
+                "The dump directive doesn't allow nested content.");
+        }
+        
+        Object o = params.get("var");
+        if ( !(o instanceof SimpleScalar)) {
+            throw new TemplateModelException(
+               "Value of 'var' must be a string.");     
+        }
+        String var = ((SimpleScalar)o).getAsString();
+
+        TemplateHashModel dataModel = env.getDataModel();
+        String output;
+        
+        if (var.equals("data_model")) {       
+            output = "Data model: ";
+            Map<String, Object> dm = (Map<String, Object>) DeepUnwrap.permissiveUnwrap(dataModel);
+            Set varNames = dm.keySet();
+            for (Object varName : varNames) {
+                output += (String) varName + ", ";
+            }
+            
+            // Add shared variables
+            Configuration config = env.getConfiguration();
+            Set sharedVars = config.getSharedVariableNames();
+            Iterator i = sharedVars.iterator();
+            while (i.hasNext()) {
+                String sv = (String) i.next();
+                TemplateModel tm = config.getSharedVariable(sv);
+                if (tm instanceof TemplateDirectiveModel ||
+                        // Legacy built-ins that are added to all configurations
+                        tm instanceof freemarker.template.utility.CaptureOutput ||
+                        tm instanceof freemarker.template.utility.StandardCompress ||
+                        tm instanceof freemarker.template.utility.HtmlEscape ||
+                        tm instanceof freemarker.template.utility.NormalizeNewlines ||
+                        tm instanceof freemarker.template.utility.XmlEscape) {
+                    continue;
+                }
+                output += sv + ", ";
+            }
+
+            output = output.replaceAll(", $", ".");
+            
+        } else {           
+            TemplateModel val = dataModel.get(var);            
+            output = var + ": " + val.toString();           
+        }
+        
+        // RY Improve by making presentation of various types more nuanced
+        // Also merge to a template for formatting
+        // get config from environment; get a template from config
+        // merge as in FreeMarkerHttpServlet.mergeToTemplate()
+        Writer out = env.getOut();
+        out.write(output + "<br />");
+
+    }
+
+}

webapp/web/templates/freemarker/body/primitiveRdfEdit.fmt

@@ -1,19 +0,0 @@
-<div>
-<form method="POST">
-
-additions:
-<textarea name="additions"></textarea>
-
-retractions:
-<textarea name="retractions"></textarea>
-<div>
-N3<input type="radio" name="rdfFormat" value="N3"/>
-TURTLE<input type="radio" name="rdfFormat" value="TURTLE"/>
-RDF/XML<input type="radio" name="rdfFormat" value="RDF/XML"/>
-</div>
-
-<input type="submit"/>
-
-
-</form>
-</div>

webapp/web/templates/freemarker/body/test.ftl

@@ -23,4 +23,8 @@
 </#list>
 </ul>
 
-<p><strong>Animal:</strong> ${animal}</p>
+<p><strong>Animal:</strong> ${animal}</p>
+
+<@dump var="fruit" />
+<@dump var="urls" />
+<@dump var="data_model" />