Protograph preview now works.

git-svn-id: http://google-refine.googlecode.com/svn/trunk@95 7d457c2a-affb-35e4-300a-418c747d4874

src/main/java/com/metaweb/gridworks/GridworksServlet.java

@@ -38,6 +38,7 @@ import com.metaweb.gridworks.commands.recon.JudgeOneCellCommand;
 import com.metaweb.gridworks.commands.recon.ReconcileCommand;
 import com.metaweb.gridworks.commands.util.GetExpressionLanguageInfoCommand;
 import com.metaweb.gridworks.commands.util.PreviewExpressionCommand;
+import com.metaweb.gridworks.commands.util.PreviewProtographCommand;
 
 public class GridworksServlet extends HttpServlet {
 	private static final long serialVersionUID = 2386057901503517403L;
@@ -75,6 +76,7 @@ public class GridworksServlet extends HttpServlet {
 		
 		_commands.put("preview-expression", new PreviewExpressionCommand());
         _commands.put("get-expression-language-info", new GetExpressionLanguageInfoCommand());
+        _commands.put("preview-protograph", new PreviewProtographCommand());
 	}
 
 	@Override

src/main/java/com/metaweb/gridworks/commands/util/PreviewProtographCommand.java

@@ -0,0 +1,42 @@
+package com.metaweb.gridworks.commands.util;
+
+import java.io.IOException;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.json.JSONArray;
+import org.json.JSONObject;
+
+import com.metaweb.gridworks.commands.Command;
+import com.metaweb.gridworks.model.Project;
+import com.metaweb.gridworks.protograph.Protograph;
+import com.metaweb.gridworks.protograph.transpose.MqlreadLikeTransposedNodeFactory;
+import com.metaweb.gridworks.protograph.transpose.Transposer;
+
+public class PreviewProtographCommand extends Command {
+	@Override
+	public void doPost(HttpServletRequest request, HttpServletResponse response)
+			throws ServletException, IOException {
+		
+		try {
+			Project project = getProject(request);
+			
+			String jsonString = request.getParameter("protograph");
+			JSONObject json = jsonStringToObject(jsonString);
+			Protograph protograph = Protograph.reconstruct(json);
+			
+			MqlreadLikeTransposedNodeFactory nodeFactory = new MqlreadLikeTransposedNodeFactory();
+			
+			Transposer.transpose(project, protograph, protograph.getRootNode(0), nodeFactory);
+			
+			JSONArray results = nodeFactory.getJSON();
+			
+			respond(response, "{ \"result\" : " + results.toString() + " }");
+			
+		} catch (Exception e) {
+			respondException(response, e);
+		}
+	}
+}

src/main/java/com/metaweb/gridworks/protograph/AnonymousNode.java

@@ -36,4 +36,12 @@ public class AnonymousNode implements Node, NodeWithLinks {
 	public void addLink(Link link) {
 		links.add(link);
 	}
+	
+	public Link getLink(int index) {
+		return links.get(index);
+	}
+
+	public int getLinkCount() {
+		return links.size();
+	}
 }

src/main/java/com/metaweb/gridworks/protograph/CellTopicNode.java

@@ -49,4 +49,12 @@ public class CellTopicNode extends CellNode implements NodeWithLinks {
 	public void addLink(Link link) {
 		links.add(link);
 	}
+
+	public Link getLink(int index) {
+		return links.get(index);
+	}
+
+	public int getLinkCount() {
+		return links.size();
+	}
 }

src/main/java/com/metaweb/gridworks/protograph/FreebaseTopicNode.java

@@ -37,4 +37,12 @@ public class FreebaseTopicNode implements Node, NodeWithLinks {
 	public void addLink(Link link) {
 		links.add(link);
 	}
+	
+	public Link getLink(int index) {
+		return links.get(index);
+	}
+
+	public int getLinkCount() {
+		return links.size();
+	}
 }

src/main/java/com/metaweb/gridworks/protograph/NodeWithLinks.java

@@ -2,4 +2,8 @@ package com.metaweb.gridworks.protograph;
 
 public interface NodeWithLinks {
 	public void addLink(Link link);
+	
+	public int getLinkCount();
+	
+	public Link getLink(int index);
 }

src/main/java/com/metaweb/gridworks/protograph/Protograph.java

@@ -17,6 +17,14 @@ public class Protograph implements Serializable, Jsonizable {
 	
 	final protected List<Node> _rootNodes = new LinkedList<Node>();
 	
+	public int getRootNodeCount() {
+		return _rootNodes.size();
+	}
+	
+	public Node getRootNode(int index) {
+		return _rootNodes.get(index);
+	}
+	
 	static public Protograph reconstruct(JSONObject o) throws JSONException {
 		Protograph g = new Protograph();
 		

src/main/java/com/metaweb/gridworks/protograph/transpose/MqlreadLikeTransposedNodeFactory.java

@@ -0,0 +1,306 @@
+package com.metaweb.gridworks.protograph.transpose;
+
+import java.util.LinkedList;
+import java.util.List;
+
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import com.metaweb.gridworks.model.Cell;
+import com.metaweb.gridworks.model.Recon;
+import com.metaweb.gridworks.protograph.AnonymousNode;
+import com.metaweb.gridworks.protograph.CellKeyNode;
+import com.metaweb.gridworks.protograph.CellNode;
+import com.metaweb.gridworks.protograph.CellTopicNode;
+import com.metaweb.gridworks.protograph.CellValueNode;
+import com.metaweb.gridworks.protograph.FreebaseProperty;
+import com.metaweb.gridworks.protograph.FreebaseTopicNode;
+import com.metaweb.gridworks.protograph.ValueNode;
+
+public class MqlreadLikeTransposedNodeFactory implements TransposedNodeFactory {
+	protected List<JSONObject> rootObjects = new LinkedList<JSONObject>();
+	
+	public JSONArray getJSON() {
+		return new JSONArray(rootObjects);
+	}
+	
+	abstract protected class JsonTransposedNode implements TransposedNode {
+		abstract public Object getJSON();
+	}
+	
+	abstract protected class JsonObjectTransposedNode extends JsonTransposedNode {
+		abstract public JSONObject getJSONObject();
+		
+		protected JSONObject obj;
+		
+		public Object getJSON() {
+			return getJSONObject();
+		}
+	}
+	
+	protected class AnonymousTransposedNode extends JsonObjectTransposedNode {
+		JsonObjectTransposedNode parent;
+		FreebaseProperty property;
+		AnonymousNode node;
+		
+		protected AnonymousTransposedNode(
+			JsonObjectTransposedNode parent,
+			FreebaseProperty property,
+			AnonymousNode node
+		) {
+			this.parent = parent;
+			this.property = property;
+			this.node = node;
+		}
+
+		public JSONObject getJSONObject() {
+			if (obj == null) {
+				obj = new JSONObject();
+				try {
+					obj.put("type", this.node.type.id);
+					obj.put("id", (String) null);
+					obj.put("create", "unconditional");
+				} catch (JSONException e) {
+					e.printStackTrace();
+				}
+				
+				linkTransposedNodeJSON(obj, parent, property);
+			}
+			
+			return obj;
+		}
+	}
+	
+	protected class CellTopicTransposedNode extends JsonObjectTransposedNode {
+		protected CellTopicNode node;
+		protected Cell cell;
+		
+		public CellTopicTransposedNode(CellTopicNode node, Cell cell) {
+			this.node = node;
+			this.cell = cell;
+		}
+
+		@Override
+		public JSONObject getJSONObject() {
+			if (obj == null) {
+				obj = new JSONObject();
+				try {
+					if (cell.recon != null && 
+						cell.recon.judgment == Recon.Judgment.Matched &&
+						cell.recon.match != null) {
+						obj.put("id", cell.recon.match.topicID);
+					} else {
+						obj.put("id", (String) null);
+						obj.put("name", cell.value.toString());
+						obj.put("type", node.type.id);
+						obj.put("create", "unless_exists");
+					}
+				} catch (JSONException e) {
+					e.printStackTrace();
+				}
+			}
+			return obj;
+		}
+	}
+	
+	protected class CellValueTransposedNode extends JsonTransposedNode {
+		protected JSONObject obj;
+		protected CellValueNode node;
+		protected Cell cell;
+		
+		public CellValueTransposedNode(CellValueNode node, Cell cell) {
+			this.node = node;
+			this.cell = cell;
+		}
+
+		public Object getJSON() {
+			if (obj == null) {
+				obj = new JSONObject();
+				try {
+					obj.put("value", cell.value.toString());
+					if (node.lang != null) {
+						obj.put("lang", node.lang);
+					}
+					
+					obj.put("connect", "insert");
+				} catch (JSONException e) {
+					e.printStackTrace();
+				}
+			}
+			return obj;
+		}
+	}
+	
+	protected class CellKeyTransposedNode extends JsonTransposedNode {
+		protected JSONObject obj;
+		protected CellKeyNode node;
+		protected Cell cell;
+		
+		public CellKeyTransposedNode(CellKeyNode node, Cell cell) {
+			this.node = node;
+			this.cell = cell;
+		}
+
+		public Object getJSON() {
+			if (obj == null) {
+				obj = new JSONObject();
+				try {
+					obj.put("value", cell.value.toString());
+					
+					JSONObject nsObj = new JSONObject();
+					nsObj.put("id", node.namespace.id);
+					
+					obj.put("namespace", nsObj);
+					obj.put("connect", "insert");
+				} catch (JSONException e) {
+					e.printStackTrace();
+				}
+			}
+			return obj;
+		}
+	}
+	
+	protected class TopicTransposedNode extends JsonObjectTransposedNode {
+		protected FreebaseTopicNode node;
+		
+		public TopicTransposedNode(FreebaseTopicNode node) {
+			this.node = node;
+		}
+
+		@Override
+		public JSONObject getJSONObject() {
+			if (obj == null) {
+				obj = new JSONObject();
+				try {
+					obj.put("id", node.topic.id);
+				} catch (JSONException e) {
+					e.printStackTrace();
+				}
+			}
+			return obj;
+		}
+	}
+
+	protected class ValueTransposedNode extends JsonTransposedNode {
+		protected JSONObject obj;
+		protected ValueNode node;
+		
+		public ValueTransposedNode(ValueNode node) {
+			this.node = node;
+		}
+
+		public Object getJSON() {
+			if (obj == null) {
+				obj = new JSONObject();
+				try {
+					obj.put("value", node.value);
+					if (node.lang != null) {
+						obj.put("lang", node.lang);
+					}
+					
+					obj.put("connect", "insert");
+				} catch (JSONException e) {
+					e.printStackTrace();
+				}
+			}
+			return obj;
+		}
+	}	
+	public TransposedNode transposeAnonymousNode(
+			TransposedNode parentNode,
+			FreebaseProperty property, 
+			AnonymousNode node) {
+		
+		return new AnonymousTransposedNode(
+			parentNode instanceof JsonObjectTransposedNode ? (JsonObjectTransposedNode) parentNode : null, 
+			property, 
+			node
+		);
+	}
+
+	public TransposedNode transposeCellNode(
+			TransposedNode parentNode,
+			FreebaseProperty property, 
+			CellNode node, 
+			Cell cell) {
+		
+		JsonTransposedNode tnode = null;
+		if (node instanceof CellTopicNode) {
+			tnode = new CellTopicTransposedNode((CellTopicNode) node, cell);
+		} else if (node instanceof CellValueNode) {
+			tnode = new CellValueTransposedNode((CellValueNode) node, cell);
+		} else if (node instanceof CellKeyNode) {
+			tnode = new CellKeyTransposedNode((CellKeyNode) node, cell);
+		}
+		
+		if (tnode != null) {
+			processTransposedNode(tnode, parentNode, property);
+		}
+		return tnode;
+	}
+
+	public TransposedNode transposeTopicNode(
+			TransposedNode parentNode,
+			FreebaseProperty property, 
+			FreebaseTopicNode node) {
+		
+		JsonTransposedNode tnode = new TopicTransposedNode(node);
+		
+		processTransposedNode(tnode, parentNode, property);
+		
+		return tnode;
+	}
+
+	public TransposedNode transposeValueNode(
+			TransposedNode parentNode,
+			FreebaseProperty property, 
+			ValueNode node) {
+		
+		JsonTransposedNode tnode = new ValueTransposedNode(node);
+		
+		processTransposedNode(tnode, parentNode, property);
+		
+		return tnode;
+	}
+	
+	protected void processTransposedNode(
+		JsonTransposedNode 		tnode, 
+		TransposedNode 			parentNode,
+		FreebaseProperty 		property 
+		) {
+		
+		if (!(tnode instanceof AnonymousTransposedNode)) {
+			linkTransposedNodeJSON(tnode.getJSON(), parentNode, property);
+		}
+	}
+	
+	protected void linkTransposedNodeJSON(
+		Object				obj,
+		TransposedNode 		parentNode,
+		FreebaseProperty 	property 
+		) {
+		
+		if (parentNode == null) {
+			if (obj instanceof JSONObject) {
+				rootObjects.add((JSONObject) obj);
+			}
+		} else if (parentNode instanceof JsonTransposedNode) {
+			JSONObject parentObj = ((JsonObjectTransposedNode) parentNode).getJSONObject();
+			
+			try {
+				JSONArray a = null;
+				if (parentObj.has(property.id)) {
+					a = parentObj.getJSONArray(property.id);
+				} else {
+					a = new JSONArray();
+					parentObj.put(property.id, a);
+				}
+				
+				a.put(a.length(), obj);
+			} catch (JSONException e) {
+				e.printStackTrace();
+			}
+		}
+	}
+}

src/main/java/com/metaweb/gridworks/protograph/transpose/TransposedNode.java

@@ -0,0 +1,4 @@
+package com.metaweb.gridworks.protograph.transpose;
+
+public interface TransposedNode {
+}

src/main/java/com/metaweb/gridworks/protograph/transpose/TransposedNodeFactory.java

@@ -0,0 +1,35 @@
+package com.metaweb.gridworks.protograph.transpose;
+
+import com.metaweb.gridworks.model.Cell;
+import com.metaweb.gridworks.protograph.AnonymousNode;
+import com.metaweb.gridworks.protograph.CellNode;
+import com.metaweb.gridworks.protograph.FreebaseProperty;
+import com.metaweb.gridworks.protograph.FreebaseTopicNode;
+import com.metaweb.gridworks.protograph.ValueNode;
+
+public interface TransposedNodeFactory {
+	public TransposedNode transposeAnonymousNode(
+		TransposedNode parentNode, 
+		FreebaseProperty property, 
+		AnonymousNode node
+	);
+	
+	public TransposedNode transposeCellNode(
+		TransposedNode parentNode, 
+		FreebaseProperty property, 
+		CellNode node, 
+		Cell cell
+	);
+	
+	public TransposedNode transposeValueNode(
+		TransposedNode parentNode, 
+		FreebaseProperty property, 
+		ValueNode node
+	);
+	
+	public TransposedNode transposeTopicNode(
+		TransposedNode parentNode, 
+		FreebaseProperty property, 
+		FreebaseTopicNode node
+	);
+}

src/main/java/com/metaweb/gridworks/protograph/transpose/Transposer.java

@@ -0,0 +1,152 @@
+package com.metaweb.gridworks.protograph.transpose;
+
+import java.util.LinkedList;
+import java.util.List;
+
+import com.metaweb.gridworks.expr.ExpressionUtils;
+import com.metaweb.gridworks.model.Cell;
+import com.metaweb.gridworks.model.Column;
+import com.metaweb.gridworks.model.Project;
+import com.metaweb.gridworks.model.Row;
+import com.metaweb.gridworks.protograph.AnonymousNode;
+import com.metaweb.gridworks.protograph.CellNode;
+import com.metaweb.gridworks.protograph.FreebaseProperty;
+import com.metaweb.gridworks.protograph.FreebaseTopicNode;
+import com.metaweb.gridworks.protograph.Link;
+import com.metaweb.gridworks.protograph.Node;
+import com.metaweb.gridworks.protograph.NodeWithLinks;
+import com.metaweb.gridworks.protograph.Protograph;
+import com.metaweb.gridworks.protograph.ValueNode;
+
+public class Transposer {
+	static public void transpose(
+		Project 				project,
+		Protograph 				protograph,
+		Node 					rootNode,
+		TransposedNodeFactory 	nodeFactory
+	) {
+		Context rootContext = new Context(rootNode, null, null, 5);
+		
+		for (Row row : project.rows) {
+			descend(project, protograph, nodeFactory, row, rootNode, rootContext);
+			if (rootContext.limit > 0 && rootContext.count > rootContext.limit) {
+				break;
+			}
+		}
+	}
+	
+	static protected void descend(
+		Project project,
+		Protograph protograph, 
+		TransposedNodeFactory nodeFactory,
+		Row row,
+		Node node,
+		Context context
+	) {
+		TransposedNode tnode = null;
+		
+		TransposedNode parentNode = context.parent == null ? null : context.parent.transposedNode;
+		FreebaseProperty property = context.parent == null ? null : context.link.property;
+		
+		if (node instanceof CellNode) {
+			CellNode node2 = (CellNode) node;
+			Column column = project.columnModel.getColumnByName(node2.columnName);
+			Cell cell = row.getCell(column.getCellIndex());
+			if (cell != null && !ExpressionUtils.isBlank(cell.value)) {
+				context.count++;
+				if (context.limit > 0 && context.count > context.limit) {
+					return;
+				}
+				
+				tnode = nodeFactory.transposeCellNode(
+					parentNode,
+					property,
+					node2, 
+					cell
+				);
+			}
+		} else {
+			if (node instanceof AnonymousNode) {
+				tnode = nodeFactory.transposeAnonymousNode(
+					parentNode,
+					property,
+					(AnonymousNode) node
+				);
+			} else if (node instanceof FreebaseTopicNode) {
+				tnode = nodeFactory.transposeTopicNode(
+					parentNode,
+					property,
+					(FreebaseTopicNode) node
+				);
+			} else if (node instanceof ValueNode) {
+				tnode = nodeFactory.transposeValueNode(
+					parentNode,
+					property,
+					(ValueNode) node
+				);
+			}
+		}
+		
+		if (tnode != null) {
+			context.transposedNode = tnode;
+			context.nullifySubContextNodes();
+		} /*
+		 	else, previous rows might have set the context transposed node already,
+		 	and we simply inherit that transposed node.
+		*/
+		
+		if (node instanceof NodeWithLinks && context.transposedNode != null) {
+			NodeWithLinks node2 = (NodeWithLinks) node;
+			
+			int linkCount = node2.getLinkCount();
+			
+			for (int i = 0; i < linkCount; i++) {
+				descend(
+					project, 
+					protograph, 
+					nodeFactory, 
+					row, 
+					node2.getLink(i).getTarget(), 
+					context.subContexts.get(i)
+				);
+			}
+		}
+	}
+	
+	static class Context {
+		TransposedNode 	transposedNode;
+		List<Context> 	subContexts;
+		Context 		parent;
+		Link			link;
+		int				count;
+		int				limit;
+		
+		Context(Node node, Context parent, Link link, int limit) {
+			this.parent = parent;
+			this.link = link;
+			this.limit = limit;
+			
+			if (node instanceof NodeWithLinks) {
+				NodeWithLinks node2 = (NodeWithLinks) node;
+				
+				int subContextCount = node2.getLinkCount();
+				
+				subContexts = new LinkedList<Context>();
+				for (int i = 0; i < subContextCount; i++) {
+					Link link2 = node2.getLink(i);
+					subContexts.add(
+						new Context(link2.getTarget(), this, link2, -1));
+				}
+			}
+		}
+		
+		public void nullifySubContextNodes() {
+			if (subContexts != null) {
+				for (Context context : subContexts) {
+					context.transposedNode = null;
+					context.nullifySubContextNodes();
+				}
+			}
+		}
+	}
+}

src/main/webapp/scripts/project/menu-bar.js

@@ -19,13 +19,13 @@ MenuBar.prototype._initializeUI = function() {
         }
     ]);
     this._createTopLevelMenuItem("Schemas", [
-        {
+        /*{
             label: "Auto-Align with Freebase ...",
             click: function() { self._doAutoSchemaAlignment(); }
-        },
+        },*/
         {
             label: "Edit Schema Alignment ...",
-            click: function() {  }
+            click: function() { self._doEditSchemaAlignment(); }
         }
     ]);
     
@@ -136,8 +136,8 @@ MenuBar.prototype._doExportRows = function() {
 
 MenuBar.prototype._doAutoSchemaAlignment = function() {
     //SchemaAlignment.autoAlign();
-    
-    new SchemaAlignmentDialog(theProject.protograph, function(newProtograph) {
-        
-    });
+};
+
+MenuBar.prototype._doEditSchemaAlignment = function() {
+    new SchemaAlignmentDialog(theProject.protograph, function(newProtograph) {});
 };

src/main/webapp/scripts/project/schema-alignment-ui-link.js

@@ -1,4 +1,5 @@
-SchemaAlignmentDialog.UILink = function(link, table, options, parentUINode) {
+SchemaAlignmentDialog.UILink = function(dialog, link, table, options, parentUINode) {
+    this._dialog = dialog;
     this._link = link;
     this._options = options;
     this._parentUINode = parentUINode;
@@ -76,6 +77,7 @@ SchemaAlignmentDialog.UILink.prototype._renderMain = function() {
 SchemaAlignmentDialog.UILink.prototype._renderDetails = function() {
     var tableDetails = $('<table></table>').addClass("schema-alignment-table-layout").appendTo(this._expandedDetailDiv)[0];
     this._targetUI = new SchemaAlignmentDialog.UINode(
+        this._dialog,
         this._link.target, 
         tableDetails, 
         { expanded: "links" in this._link.target && this._link.target.links.length > 0 });
@@ -115,6 +117,7 @@ SchemaAlignmentDialog.UILink.prototype._showPropertySuggestPopup = function(elmt
         window.setTimeout(function() {
             MenuSystem.dismissAll();
             self._renderMain();
+            self._dialog.preview();
         }, 100);
     });
     input[0].focus();

src/main/webapp/scripts/project/schema-alignment-ui-node.js

@@ -1,4 +1,5 @@
-SchemaAlignmentDialog.UINode = function(node, table, options) {
+SchemaAlignmentDialog.UINode = function(dialog, node, table, options) {
+    this._dialog = dialog;
     this._node = node;
     this._options = options;
     
@@ -149,7 +150,13 @@ SchemaAlignmentDialog.UINode.prototype._renderDetails = function() {
     
     if ("links" in this._node && this._node.links != null) {
         for (var i = 0; i < this._node.links.length; i++) {
-            this._linkUIs.push(new SchemaAlignmentDialog.UILink(this._node.links[i], this._tableLinks, { expanded: true }, this));
+            this._linkUIs.push(new SchemaAlignmentDialog.UILink(
+                this._dialog, 
+                this._node.links[i], 
+                this._tableLinks, 
+                { expanded: true }, 
+                this
+            ));
         }
     }
     
@@ -167,6 +174,7 @@ SchemaAlignmentDialog.UINode.prototype._renderDetails = function() {
                 }
             };
             self._linkUIs.push(new SchemaAlignmentDialog.UILink(
+                self._dialog,
                 newLink, 
                 self._tableLinks,
                 {
@@ -519,7 +527,7 @@ SchemaAlignmentDialog.UINode.prototype._showNodeConfigDialog = function() {
     }
     if ("valueType" in this._node) {
         elmts.valueNodeTypeValueTypeSelect[0].value = this._node.valueType;
-        elmts.cellAsValueTypeSelect.value(this._node.valueType);
+        elmts.cellAsValueTypeSelect[0].value = this._node.valueType;
     }
     
     /*--------------------------------------------------
@@ -554,8 +562,10 @@ SchemaAlignmentDialog.UINode.prototype._showNodeConfigDialog = function() {
             } else if (node.nodeType == "cell-as-value") {
                 node.valueType = elmts.cellAsValueTypeSelect[0].value;
                 
-                var l = elmts.cellAsValueLanguageInput[0].data("data.suggest");
-                node.lang = (l) ? l.id : "/type/text";
+                if (node.valueType == "/type/text") {
+                    var l = elmts.cellAsValueLanguageInput.data("data.suggest");
+                    node.lang = (l) ? l.id : "/lang/en";
+                }
             } else if (node.nodeType == "cell-as-key") {
                 var t = elmts.cellAsKeyInput.data("data.suggest");
                 if (!(t)) {
@@ -595,8 +605,10 @@ SchemaAlignmentDialog.UINode.prototype._showNodeConfigDialog = function() {
             }
             node.valueType = elmts.valueNodeTypeValueTypeSelect[0].value;
             
-            var l = elmts.valueNodeTypeLanguageInput[0].data("data.suggest");
-            node.lang = (l) ? l.id : "/type/text";
+            if (node.valueType == "/type/text") {
+                var l = elmts.valueNodeTypeLanguageInput.data("data.suggest");
+                node.lang = (l) ? l.id : "/lang/en";
+            }
         }
         
         return node;
@@ -609,6 +621,7 @@ SchemaAlignmentDialog.UINode.prototype._showNodeConfigDialog = function() {
             
             self._node = node;
             self.render();
+            self._dialog.preview();
         }
     }).appendTo(footer);
     

src/main/webapp/scripts/project/schema-alignment.js

@@ -105,6 +105,7 @@ function SchemaAlignmentDialog(protograph, onDone) {
     
     this._nodeUIs = [];
     this._createDialog();
+    this.preview();
 };
 
 SchemaAlignmentDialog.prototype._createDialog = function() {
@@ -173,6 +174,7 @@ SchemaAlignmentDialog.prototype._renderBody = function(body) {
     
     for (var i = 0; i < this._protograph.rootNodes.length; i++) {
         this._nodeUIs.push(new SchemaAlignmentDialog.UINode(
+            this,
             this._protograph.rootNodes[i], 
             this._nodeTable, 
             {
@@ -199,6 +201,24 @@ SchemaAlignmentDialog.prototype.getJSON = function() {
     };
 };
 
+SchemaAlignmentDialog.prototype.preview = function() {
+    var self = this;
+    
+    this._previewPane.empty();
+    
+    var protograph = this.getJSON();
+    $.post(
+        "/command/preview-protograph?" + $.param({ project: theProject.id }),
+        { protograph: JSON.stringify(protograph) },
+        function(data) {
+            if ("result" in data) {
+                self._previewPane.text(JSON.stringify(data.result, null, 2));
+            }
+        },
+        "json"
+    );
+};
+
 SchemaAlignmentDialog._findColumn = function(cellIndex) {
     var columns = theProject.columnModel.columns;
     for (var i = 0; i < columns.length; i++) {

src/main/webapp/styles/schema-alignment-dialog.css

@@ -70,6 +70,9 @@ div.schema-alignment-dialog-preview {
     border: 1px solid #aaa;
     padding: 10px;
     margin-top: 10px;
+    white-space: pre;
+    font-family: monospace;
+    font-size: 11pt;
 }
 
 /*--------------------------------------------------