Implemented Universe Project save routine.

traqtor-aio/src/main/java/link/pagan/traqtor/Directoried.java

@@ -0,0 +1,15 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package link.pagan.traqtor;
+
+import java.io.File;
+
+/** @author Edward M. Kagan {@literal <}kaganem{@literal @}2pm.tech{@literal >} */
+public interface Directoried {
+
+	public File dir ();
+
+}

traqtor-aio/src/main/java/link/pagan/traqtor/Workspace.java

@@ -1,21 +1,47 @@
 package link.pagan.traqtor;
 
 import java.io.File;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import link.pagan.traqtor.deck.SystemConfig;
+import link.pagan.traqtor.deck.op.OperationResult;
 import link.pagan.traqtor.project.Project;
+import link.pagan.traqtor.project.database.DatabaseProject;
+import link.pagan.traqtor.project.universe.UniverseProject;
 import link.pagan.traqtor.util.Name;
 
 /** @author Edward M. Kagan {@literal <}kaganem{@literal @}2pm.tech{@literal >} */
-public class Workspace {
+public class Workspace implements Filed, Directoried {
 
 	private File root;
+	// private File lockFile;
 
 	private Name name;
 
 	private boolean dirty;
 
+	private final List<Project> projects;
+
+	public UniverseProject universe () {
+		UniverseProject project = new UniverseProject(this);
+		this.projects.add(project);
+		this.dirty = true;
+		return project;
+	}
+
+	public DatabaseProject database () {
+		DatabaseProject project = new DatabaseProject(this);
+		this.projects.add(project);
+		this.dirty = true;
+		return project;
+	}
+
 	public Workspace () {
 		this.root = null;
 		this.dirty = true;
+		this.projects = new ArrayList<Project>();
 	}
 
 	public Name name () {
@@ -31,11 +57,18 @@ public class Workspace {
 		return this;
 	}
 
-	public Workspace projects (Project... project) {
+	public List<Project> projects () {
+		return projects;
+	}
+
+	public Workspace projects (Project... projects) {
+		this.projects.addAll(Arrays.asList(projects));
+		this.dirty = true;
 		return this;
 	}
 
-	public File root () {
+	@Override
+	public File dir () {
 		return root;
 	}
 
@@ -52,4 +85,124 @@ public class Workspace {
 		return dirty;
 	}
 
+	public OperationResult saveAs (File parentDir) {
+		return saveAs(this, parentDir, OperationResult.start());
+	}
+
+	private static OperationResult saveAs (Workspace workspace, File parent, OperationResult result) {
+
+		if (parent == null) {
+			return result
+			             .info("Target directory must be set, are you OK?")
+			             .fail("Failed to save workspace, no new root directory was passed");
+		}
+
+		if (!parent.exists()) {
+			return result
+			             .info("Directory " + parent.getAbsolutePath() + " does not exist, deleted/moved/unmounted?")
+			             .fail("Failed to save workspace, due non existent parent direcory for new workspace");
+		}
+
+		if (workspace.name() == null) {
+			return result
+			             .info("Workspace does not contain name - how did you even achieve that?")
+			             .fail("Failed to save workspace, due unknown name of it, huh...");
+		}
+
+		File root = new File(parent, workspace.name().asTiled());
+
+		if (!root.exists()) {
+			result.info("Creating new root direcory at " + root.getAbsolutePath());
+
+			if (!root.mkdirs()) {
+				return result
+				             .info("Unable to create directory " + root.getAbsolutePath() + " - permission problem?")
+				             .fail("Failed to save workspace, can not create new root directory");
+			}
+		}
+
+		if (root.listFiles().length > 0) {
+			return result
+			             .info("Directory " + root.getAbsolutePath() + " is not empty, not safe to save?")
+			             .fail("Failed to save workspace, due to polluted new root direcory");
+		}
+		File oldRoot = workspace.dir();
+		boolean oldDirty = workspace.dirty();
+
+		workspace.root(root);
+		workspace.dirty(true);
+		result.info("Setting workspace root to " + root.getAbsolutePath());
+		save(workspace, result.startSubresult());
+
+		if (!result.ok()) {
+			result.info("Reverting workspace root to " + oldRoot.getAbsolutePath());
+			workspace.root(oldRoot);
+			workspace.dirty(oldDirty);
+		}
+		return result;
+	}
+
+	public OperationResult save () {
+		return save(this, OperationResult.start());
+	}
+
+	private static OperationResult save (Workspace workspace, OperationResult result) {
+
+		if (!workspace.dirty()) { return result.warn("Workspace is not dirty - no need to save"); }
+
+		result.info("Saving workspace " + workspace.name().asTiled() + " ...");
+
+		if (workspace.dir() == null) {
+			return result
+			             .info("Workspace root is not set - is this a new workspace?")
+			             .fail("Failed to save workspace, due to unknown root directory");
+		}
+
+		if (!workspace.dir().exists()) {
+			return result
+			             .info("Directory " + workspace.dir().getAbsolutePath() +
+			                   " does not exist, deleted/moved/unmounted?")
+			             .fail("Failed to save workspace, due non existent root direcory");
+		}
+
+		if (!workspace.dir().canRead()) {
+			return result
+			             .info("Unable to read " + workspace.dir().getAbsolutePath() + " - permission problem?")
+			             .fail("Failed to save workspace, due unreadable root direcory");
+		}
+
+		if (!workspace.dir().canWrite()) {
+			return result
+			             .info("Unable to write " + workspace.dir().getAbsolutePath() + " - permission problem?")
+			             .fail("Failed to save workspace, due write restriction on root direcory");
+
+		}
+
+		for (Project project : workspace.projects()) { project.save(result.startSubresult()); }
+
+		writeJson(workspace, result.startSubresult());
+
+		if (result.ok()) { workspace.dirty(false); }
+
+		return result;
+	}
+
+	private static OperationResult writeJson (Workspace workspace, OperationResult result) {
+		File file = workspace.file();
+		result.info("Writing workspace descriptor file to " + file.getAbsolutePath() + " ...");
+
+		try {
+			SystemConfig.JSON.writeValue(file, workspace);
+		} catch (IOException ex) {
+			result.fail("Failed to write file " + file.getAbsolutePath() + " - IO exception");
+			result.fail(ex);
+		}
+		return result;
+	}
+
+	@Override
+	public File file () {
+		return new File(dir(), ".tw");
+	}
+
 }

traqtor-aio/src/main/java/link/pagan/traqtor/deck/SystemConfig.java

@@ -0,0 +1,35 @@
+package link.pagan.traqtor.deck;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
+import com.fasterxml.jackson.databind.module.SimpleModule;
+import link.pagan.traqtor.Workspace;
+import link.pagan.traqtor.WorkspaceSerializer;
+import link.pagan.traqtor.project.universe.UniverseProject;
+import link.pagan.traqtor.project.universe.UniverseProjectSerializer;
+import link.pagan.traqtor.project.universe.element.Element;
+import link.pagan.traqtor.project.universe.element.ElementSerializer;
+import link.pagan.traqtor.project.universe.element.Particle;
+import link.pagan.traqtor.project.universe.element.PaticleInfoSerializer;
+import link.pagan.traqtor.project.universe.link.Link;
+import link.pagan.traqtor.project.universe.link.LinkSerializer;
+import link.pagan.traqtor.project.universe.schema.Constraint;
+import link.pagan.traqtor.project.universe.schema.ConstraintInfoSerializer;
+import link.pagan.traqtor.util.Name;
+import link.pagan.traqtor.util.NameSerializer;
+
+/** @author Edward M. Kagan {@literal <}kaganem{@literal @}2pm.tech{@literal >} */
+public abstract class SystemConfig {
+
+	public static final ObjectMapper JSON = new ObjectMapper()
+	                                                          .enable(SerializationFeature.INDENT_OUTPUT)
+	                                                          .registerModule(new SimpleModule()
+	                                                                                            .addSerializer(Name.class, new NameSerializer())
+	                                                                                            .addSerializer(UniverseProject.class, new UniverseProjectSerializer())
+	                                                                                            .addSerializer(Element.class, new ElementSerializer())
+	                                                                                            .addSerializer(Particle.class, new PaticleInfoSerializer())
+	                                                                                            .addSerializer(Constraint.class, new ConstraintInfoSerializer())
+	                                                                                            .addSerializer(Link.class, new LinkSerializer())
+	                                                                                            .addSerializer(Workspace.class, new WorkspaceSerializer()));
+
+}

traqtor-aio/src/main/java/link/pagan/traqtor/deck/op/OperationResult.java

@@ -5,35 +5,50 @@ import java.util.LinkedList;
 /** @author Edward M. Kagan {@literal <}kaganem{@literal @}2pm.tech{@literal >} */
 public class OperationResult {
 
+	private final OperationResult parent;
+
 	private final long timestamp;
 
 	private final LinkedList<OperationMessage> messages;
 
 	private final LinkedList<OperationResult> subresults;
 
-	private OperationResult () {
+	private OperationResult (OperationResult parent) {
 		this.timestamp = System.currentTimeMillis();
 		this.messages = new LinkedList<OperationMessage>();
 		this.subresults = new LinkedList<OperationResult>();
+		this.parent = parent;
+	}
+
+	private OperationResult () {
+		this(null);
 	}
 
 	public OperationResult info (String message) {
-		this.messages.add(OperationMessage.info(message));
+		OperationMessage info = OperationMessage.info(message);
+		this.messages.add(info);
+
+		if (this.parent != null) { this.parent.info(message); }
 		return this;
 	}
 
 	public OperationResult warn (String message) {
-		this.messages.add(OperationMessage.warn(message));
+		OperationMessage warn = OperationMessage.warn(message);
+		this.messages.add(warn);
+
+		if (this.parent != null) { this.parent.warn(message); }
 		return this;
 	}
 
 	public OperationResult fail (Exception ex) {
-		this.messages.add(OperationMessage.fail(ex.getMessage()));
+		return fail(ex.getMessage());
-		return this;
 	}
 
 	public OperationResult fail (String message) {
-		this.messages.add(OperationMessage.fail(message));
+		OperationMessage fail = OperationMessage.fail(message);
+		this.messages.add(fail);
+
+		if (this.parent != null) { this.parent.fail(message); }
 		return this;
 	}
 
@@ -41,16 +56,14 @@ public class OperationResult {
 		boolean proxiedOK = proxiedOK();
 
 		if (!proxiedOK) { this.messages.forEach(message -> {
-			System.out.println(message.toString());
+		    System.out.println(message.toString());
-			});
+		}); }
-}
 		return proxiedOK;
 	}
 
 	private boolean proxiedOK () {
-		if (this.messages.stream().anyMatch(message -> (message.type().equals(MessageType.FAIL)))) {
+
-			return false;
+		if (this.messages.stream().anyMatch(message -> (message.type().equals(MessageType.FAIL)))) { return false; }
-		}
 		return this.subresults.stream().noneMatch(subresult -> (!subresult.ok()));
 	}
 
@@ -59,7 +72,7 @@ public class OperationResult {
 	}
 
 	public OperationMessage[] messages () {
-		return this.messages.toArray(new OperationMessage[this.messages.size()]);
+		return messages.toArray(new OperationMessage[messages.size()]);
 	}
 
 	public OperationResult[] subresults () {
@@ -71,14 +84,19 @@ public class OperationResult {
 	}
 
 	public OperationResult startSubresult () {
-		OperationResult subresult = new OperationResult();
+		OperationResult subresult = new OperationResult(this);
 		this.subresults.add(subresult);
 		return subresult;
 	}
 
-	public OperationResult addSubresult (OperationResult subresult) {
+	// public OperationResult addSubresult (OperationResult subresult) {
-		this.subresults.add(subresult);
+	// this.subresults.add(subresult);
-		return this;
+	// return this;
+	// }
+
+	public void print () {
+
+		for (OperationMessage message : this.messages()) { System.out.println(message); }
 	}
 
 }

traqtor-aio/src/main/java/link/pagan/traqtor/project/Project.java

@@ -1,15 +1,26 @@
 package link.pagan.traqtor.project;
 
+import link.pagan.traqtor.Directoried;
+import link.pagan.traqtor.Filed;
+import link.pagan.traqtor.Workspace;
+import link.pagan.traqtor.deck.op.OperationResult;
 import link.pagan.traqtor.util.Name;
 
-public abstract class Project {
+public abstract class Project implements Filed, Directoried {
+
+	protected final Workspace workspace;
 
 	protected Name name;
 
 	protected boolean dirty;
 
+	public Project (Workspace workspace) {
+		this.workspace = workspace;
+	}
+
 	public Name name () {
-		if (name == null) return Name.NO_NAME;
+
+		if (name == null) { return Name.NO_NAME; }
 		return this.name;
 	}
 
@@ -23,4 +34,6 @@ public abstract class Project {
 		return this;
 	}
 
+	public abstract OperationResult save (OperationResult result);
+
 }

traqtor-aio/src/main/java/link/pagan/traqtor/project/backend/mapping/BackendProject.java

@@ -0,0 +1,36 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package link.pagan.traqtor.project.backend.mapping;
+
+import java.io.File;
+import link.pagan.traqtor.Workspace;
+import link.pagan.traqtor.deck.op.OperationResult;
+import link.pagan.traqtor.project.Project;
+
+/** @author Edward M. Kagan {@literal <}kaganem{@literal @}2pm.tech{@literal >} */
+public class BackendProject extends Project {
+
+	public BackendProject (Workspace workspace) {
+		super(workspace);
+	}
+
+	@Override
+	public OperationResult save (OperationResult result) {
+		throw new UnsupportedOperationException("Not supported yet."); // To change body of generated methods, choose
+		                                                               // Tools | Templates.
+	}
+
+	@Override
+	public File file () {
+		return new File(this.dir(), "backend.json");
+	}
+
+	@Override
+	public File dir () {
+		return new File(workspace.dir(), this.name.asTiled() + "-backend");
+	}
+
+}

traqtor-aio/src/main/java/link/pagan/traqtor/project/database/DatabaseProject.java

@@ -1,5 +1,8 @@
 package link.pagan.traqtor.project.database;
 
+import java.io.File;
+import link.pagan.traqtor.Workspace;
+import link.pagan.traqtor.deck.op.OperationResult;
 import link.pagan.traqtor.project.universe.UniverseProject;
 import link.pagan.traqtor.project.Project;
 import link.pagan.traqtor.util.Name;
@@ -7,7 +10,9 @@ import link.pagan.traqtor.util.Name;
 /** @author Edward M. Kagan {@literal <}kaganem{@literal @}2pm.tech{@literal >} */
 public class DatabaseProject extends Project {
 
-	DatabaseProject () {}
+	public DatabaseProject (Workspace workspace) {
+		super(workspace);
+	}
 
 	@Override
 	public DatabaseProject name (String... parts) {
@@ -29,4 +34,20 @@ public class DatabaseProject extends Project {
 		return this;
 	}
 
+	@Override
+	public OperationResult save (OperationResult result) {
+		throw new UnsupportedOperationException("Not supported yet."); // To change body of generated methods, choose
+		                                                               // Tools | Templates.
+	}
+
+	@Override
+	public File file () {
+		return new File(this.dir(), "database.json");
+	}
+
+	@Override
+	public File dir () {
+		return new File(workspace.dir(), this.name.asTiled() + "-database");
+	}
+
 }

traqtor-aio/src/main/java/link/pagan/traqtor/project/frontend/FrontendProject.java

@@ -0,0 +1,36 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package link.pagan.traqtor.project.frontend;
+
+import java.io.File;
+import link.pagan.traqtor.Workspace;
+import link.pagan.traqtor.deck.op.OperationResult;
+import link.pagan.traqtor.project.Project;
+
+/** @author Edward M. Kagan {@literal <}kaganem{@literal @}2pm.tech{@literal >} */
+public class FrontendProject extends Project {
+
+	public FrontendProject (Workspace workspace) {
+		super(workspace);
+	}
+
+	@Override
+	public OperationResult save (OperationResult result) {
+		throw new UnsupportedOperationException("Not supported yet."); // To change body of generated methods, choose
+		                                                               // Tools | Templates.
+	}
+
+	@Override
+	public File file () {
+		return new File(this.dir(), "frontend.json");
+	}
+
+	@Override
+	public File dir () {
+		return new File(workspace.dir(), this.name.asTiled() + "-frontend");
+	}
+
+}

traqtor-aio/src/main/java/link/pagan/traqtor/project/universe/Universe.java

@@ -1,8 +1,5 @@
 package link.pagan.traqtor.project.universe;
 
-import link.pagan.traqtor.project.universe.element.Atom;
-import link.pagan.traqtor.project.universe.element.Element;
-import link.pagan.traqtor.project.universe.element.Isotope;
 import link.pagan.traqtor.project.universe.link.Link;
 import link.pagan.traqtor.project.universe.link.ManyToManyLink;
 import link.pagan.traqtor.project.universe.link.OneToManyLink;
@@ -11,18 +8,6 @@ import link.pagan.traqtor.project.universe.link.OneToOneLink;
 /** @author Edward M. Kagan {@literal <}kaganem{@literal @}2pm.tech{@literal >} */
 public class Universe {
 
-	public static UniverseProject project () {
-		return new UniverseProject();
-	}
-
-	public static Atom atom () {
-		return Element.atom();
-	}
-
-	public static Isotope isotope () {
-		return Element.isotope();
-	}
-
 	public static OneToOneLink linkOneToOne () {
 		return Link.oneToOne();
 	}

traqtor-aio/src/main/java/link/pagan/traqtor/project/universe/UniverseProject.java

@@ -1,12 +1,19 @@
 package link.pagan.traqtor.project.universe;
 
+import java.io.File;
+import java.io.IOException;
 import java.util.Arrays;
 import java.util.Set;
 import java.util.TreeSet;
+import link.pagan.traqtor.Workspace;
+import link.pagan.traqtor.deck.SystemConfig;
+import link.pagan.traqtor.deck.op.OperationResult;
 import link.pagan.traqtor.project.Project;
+import link.pagan.traqtor.project.universe.element.Atom;
 import link.pagan.traqtor.project.universe.schema.DatatypeSchema;
 import link.pagan.traqtor.project.universe.link.Link;
 import link.pagan.traqtor.project.universe.element.Element;
+import link.pagan.traqtor.project.universe.element.Isotope;
 import link.pagan.traqtor.util.Name;
 
 public class UniverseProject extends Project {
@@ -17,16 +24,19 @@ public class UniverseProject extends Project {
 
 	private final Set<Link> links;
 
-	UniverseProject () {
+	public UniverseProject (Workspace workspace) {
+		super(workspace);
 		this.schemas = new TreeSet<DatatypeSchema>( (DatatypeSchema a, DatatypeSchema b) -> a.name()
 		                                                                                     .compareTo(b.name()));
 		this.elements = new TreeSet<Element>( (Element a, Element b) -> a.name().compareTo(b.name()));
 		this.links = new TreeSet<Link>( (Link a,
-		                                 Link b) -> (a.from().name().asDotted() + "_" +
+		                                 Link b) -> (a.from().name().asDotted() + "_" + a.fromName().asDotted())
-		                                             a.fromName().asDotted())
+		                                                                                                        .compareTo((b.from()
-		                                                                     .compareTo((b.from().name().asDotted() +
+		                                                                                                                     .name()
-		                                                                                 "_" +
+		                                                                                                                     .asDotted() +
-		                                                                                 b.fromName().asDotted())));
+		                                                                                                                    "_" +
+		                                                                                                                    b.fromName()
+		                                                                                                                     .asDotted())));
 	}
 
 	@Override
@@ -67,4 +77,62 @@ public class UniverseProject extends Project {
 		return this;
 	}
 
+	@Override
+	public OperationResult save (OperationResult result) {
+		return save(this, result);
+	}
+
+	private static OperationResult save (UniverseProject project, OperationResult result) {
+
+		if (!project.dir().exists()) {
+			result.warn("Project directory " + project.dir().getAbsolutePath() + " does not exist");
+			result.info("Creating project directory at " + project.dir().getAbsolutePath() + " ...");
+
+			if (!project.dir().mkdirs()) {
+				return result.fail("Failed to created project directory at " + project.dir().getAbsolutePath());
+			}
+		}
+
+		for (Element element : project.elements()) { element.save(result.startSubresult()); }
+
+		writeJson(project, result.startSubresult());
+
+		return result;
+	}
+
+	private static OperationResult writeJson (UniverseProject project, OperationResult result) {
+		File file = project.file();
+		result.info("Writing project descriptor file to " + file.getAbsolutePath() + " ...");
+
+		try {
+			SystemConfig.JSON.writeValue(file, project);
+		} catch (IOException ex) {
+			result.fail("Failed to write file " + file.getAbsolutePath() + " - IO exception");
+			result.fail(ex);
+		}
+		return result;
+	}
+
+	@Override
+	public File file () {
+		return new File(this.dir(), ".tup");
+	}
+
+	@Override
+	public File dir () {
+		return new File(workspace.dir(), this.name.asTiled() + "-universe");
+	}
+
+	public Atom atom () {
+		Atom res = new Atom(this);
+		this.elements.add(res);
+		return res;
+	}
+
+	public Isotope isotope (Element base) {
+		Isotope res = new Isotope(this, base);
+		this.elements.add(res);
+		return res;
+	}
+
 }

traqtor-aio/src/main/java/link/pagan/traqtor/project/universe/UniverseProjectSerializer.java

@@ -4,7 +4,6 @@ import com.fasterxml.jackson.core.JsonGenerator;
 import com.fasterxml.jackson.databind.SerializerProvider;
 import com.fasterxml.jackson.databind.ser.std.StdSerializer;
 import java.io.IOException;
-import link.pagan.traqtor.project.universe.element.Element;
 import link.pagan.traqtor.project.universe.link.Link;
 import link.pagan.traqtor.project.universe.schema.DatatypeSchema;
 
@@ -29,12 +28,6 @@ public class UniverseProjectSerializer extends StdSerializer<UniverseProject> {
 
 		for (DatatypeSchema schema : value.schemas()) { gen.writeObject(schema.name()); }
 		gen.writeEndArray();
-
-		gen.writeArrayFieldStart("elements");
-
-		for (Element element : value.elements()) { gen.writeObject(element); }
-		gen.writeEndArray();
-
 		gen.writeArrayFieldStart("links");
 
 		for (Link link : value.links()) { gen.writeObject(link); }

traqtor-aio/src/main/java/link/pagan/traqtor/project/universe/element/Atom.java

@@ -1,12 +1,16 @@
 package link.pagan.traqtor.project.universe.element;
 
+import java.io.File;
 import java.util.List;
+import link.pagan.traqtor.project.universe.UniverseProject;
 import link.pagan.traqtor.project.universe.schema.DataType;
 import link.pagan.traqtor.util.Name;
 
 public class Atom extends Element {
 
-	Atom () {}
+	public Atom (UniverseProject project) {
+		super(project);
+	}
 
 	@Override
 	public Atom name (Name name) {
@@ -20,4 +24,9 @@ public class Atom extends Element {
 		return this;
 	}
 
+	@Override
+	public File file () {
+		return new File(this.project.dir(), this.name().asTiled() + ".tae");
+	}
+
 }

traqtor-aio/src/main/java/link/pagan/traqtor/project/universe/element/Element.java

@@ -1,14 +1,22 @@
 package link.pagan.traqtor.project.universe.element;
 
+import java.io.File;
+import java.io.IOException;
 import java.util.Arrays;
 import java.util.Comparator;
 import java.util.List;
 import java.util.Set;
 import java.util.TreeSet;
+import link.pagan.traqtor.Filed;
+import link.pagan.traqtor.deck.SystemConfig;
+import link.pagan.traqtor.deck.op.OperationResult;
+import link.pagan.traqtor.project.universe.UniverseProject;
 import link.pagan.traqtor.project.universe.schema.DataType;
 import link.pagan.traqtor.util.Name;
 
-public abstract class Element {
+public abstract class Element implements Filed {
+
+	protected final UniverseProject project;
 
 	private static final Comparator<Particle<? extends DataType>> PARTICLE_SORT_COMPARATOR = new Comparator<Particle<? extends DataType>>() {
 
@@ -23,8 +31,9 @@ public abstract class Element {
 
 	private final Set<Particle<? extends DataType>> particles;
 
-	public Element () {
+	public Element (UniverseProject project) {
-		particles = new TreeSet<Particle<? extends DataType>>(PARTICLE_SORT_COMPARATOR);
+		this.project = project;
+		this.particles = new TreeSet<Particle<? extends DataType>>(PARTICLE_SORT_COMPARATOR);
 	}
 
 	public Name name () {
@@ -56,12 +65,31 @@ public abstract class Element {
 		return this;
 	}
 
-	public static Atom atom () {
+	public OperationResult save (OperationResult result) {
-		return new Atom();
+		return save(this, result);
 	}
 
-	public static Isotope isotope () {
+	private static OperationResult save (Element element, OperationResult result) {
-		return new Isotope();
+
+		if (element.getClass().equals(Atom.class) || element.getClass().equals(Isotope.class)) {
+			writeJson(element, result.startSubresult());
+		} else {
+			return result.fail("Unknown element type - not supported class " + element.getClass().getName());
+		}
+		return result;
+	}
+
+	private static OperationResult writeJson (Element element, OperationResult result) {
+		File file = element.file();
+		result.info("Writing element to " + file.getAbsolutePath() + " ...");
+
+		try {
+			SystemConfig.JSON.writeValue(file, element);
+		} catch (IOException ex) {
+			result.fail("Failed to write file " + file.getAbsolutePath() + " - IO exception");
+			result.fail(ex);
+		}
+		return result;
 	}
 
 }

traqtor-aio/src/main/java/link/pagan/traqtor/project/universe/element/Isotope.java

@@ -1,15 +1,20 @@
 package link.pagan.traqtor.project.universe.element;
 
+import java.io.File;
 import java.util.List;
+import link.pagan.traqtor.project.universe.UniverseProject;
 import link.pagan.traqtor.project.universe.schema.DataType;
 import link.pagan.traqtor.util.Name;
 
 public class Isotope extends Element {
 
-	Isotope () {}
-
 	private Element base;
 
+	public Isotope (UniverseProject project, Element base) {
+		super(project);
+		this.base = base;
+	}
+
 	public Element base () {
 		return base;
 	}
@@ -26,9 +31,9 @@ public class Isotope extends Element {
 		return this;
 	}
 
-	public Isotope base (Element base) {
+	@Override
-		this.base = base;
+	public File file () {
-		return this;
+		return new File(this.project.dir(), this.name().asTiled() + ".tie");
 	}
 
 }

traqtor-aio/src/main/java/link/pagan/traqtor/project/universe/element/Particle.java

@@ -11,33 +11,10 @@ import link.pagan.traqtor.util.Name;
 
 public class Particle <T extends DataType> extends PaticleInfo {
 
-	private final DataType type;
-
-	private Name name;
-
-	private String description;
-
-	@Override
-	public Name name () {
-
-		if (name == null) { return Name.NO_NAME; }
-		return name;
-	}
-
-	@Override
-	public String description () {
-		return description;
-	}
-
-	@Override
-	public DataType type () {
-		return type;
-	}
-
 	private final Set<ConstraintInfo> constraints;
 
 	public Particle (DataType type) {
-		this.type = type;
+		super(type);
 		this.constraints = new TreeSet<ConstraintInfo>( (ConstraintInfo a,
 		                                                 ConstraintInfo b) -> a.name()
 		                                                                       .asDotted()
@@ -69,7 +46,8 @@ public class Particle <T extends DataType> extends PaticleInfo {
 		return this;
 	}
 
-	public Particle<T> optional () {
+	public Particle<T> optional (boolean optional) {
+		this.optional = optional;
 		return this;
 	}
 

traqtor-aio/src/main/java/link/pagan/traqtor/project/universe/element/PaticleInfo.java

@@ -1,8 +1,3 @@
-/*
- * To change this license header, choose License Headers in Project Properties.
- * To change this template file, choose Tools | Templates
- * and open the template in the editor.
- */
 package link.pagan.traqtor.project.universe.element;
 
 import java.util.Set;
@@ -13,12 +8,36 @@ import link.pagan.traqtor.util.Name;
 /** @author Edward M. Kagan {@literal <}kaganem{@literal @}2pm.tech{@literal >} */
 public abstract class PaticleInfo {
 
-	public abstract Name name ();
+	protected final DataType type;
 
-	public abstract String description ();
+	protected Name name;
+
+	protected String description;
+
+	protected boolean optional;
+
+	public PaticleInfo (DataType type) {
+		this.type = type;
+	}
+
+	public Name name () {
+
+		if (name == null) { return Name.NO_NAME; }
+		return name;
+	}
+
+	public String description () {
+		return description;
+	}
+
+	public DataType type () {
+		return type;
+	}
 
 	public abstract Set<ConstraintInfo> constraints ();
 
-	public abstract DataType type ();
+	public boolean optional () {
+		return this.optional;
+	}
 
 }

traqtor-aio/src/main/java/link/pagan/traqtor/project/universe/element/PaticleInfoSerializer.java

@@ -26,11 +26,17 @@ public class PaticleInfoSerializer extends StdSerializer<PaticleInfo> {
 		gen.writeObjectField("type", value.type().name());
 
 		if (value.description() != null) { gen.writeStringField("description", value.description()); }
-		gen.writeArrayFieldStart("constraints");
 
-		for (ConstraintInfo constraint : value.constraints()) { gen.writeObject(constraint); }
+		if (value.optional()) { gen.writeStringField("optional", value.description()); }
+
+		if (value.constraints().size() > 0) {
+			gen.writeArrayFieldStart("constraints");
+
+			for (ConstraintInfo constraint : value.constraints()) { gen.writeObject(constraint); }
+
+			gen.writeEndArray();
+		}
 
-		gen.writeEndArray();
 		gen.writeEndObject();
 	}
 

traqtor-aio/src/main/java/link/pagan/traqtor/test/TestUtils.java

@@ -5,24 +5,31 @@ import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.Comparator;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 
 /** @author Edward M. Kagan {@literal <}kaganem{@literal @}2pm.tech{@literal >} */
 public class TestUtils {
 
 	private static final File TEST_DIR = new File(new File("").getAbsoluteFile().getParentFile(), "traqtor-test-root");
 
-	public static final void rebuildTestRoot () throws IOException {
+	public static final void rebuildTestRoot () {
 		deleteTestRoot();
 		TEST_DIR.mkdirs();
 	}
 
-	public static final void deleteTestRoot () throws IOException {
+	public static final void deleteTestRoot () {
 
 		if (TEST_DIR.exists()) {
-			Files.walk(TEST_DIR.toPath())
+
-			     .sorted(Comparator.reverseOrder())
+			try {
-			     .map(Path::toFile)
+				Files.walk(TEST_DIR.toPath())
-			     .forEach(File::delete);
+				     .sorted(Comparator.reverseOrder())
+				     .map(Path::toFile)
+				     .forEach(File::delete);
+			} catch (IOException ex) {
+				Logger.getLogger(TestUtils.class.getName()).log(Level.SEVERE, null, ex);
+			}
 		}
 	}
 

traqtor-aio/src/test/java/link/pagan/traqtor/test/WorkspaceTest.java

@@ -0,0 +1,34 @@
+package link.pagan.traqtor.test;
+
+import link.pagan.traqtor.Workspace;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+/** @author Edward M. Kagan {@literal <}kaganem{@literal @}2pm.tech{@literal >} */
+public class WorkspaceTest {
+
+	@BeforeEach
+	public void cleanTestDir () {
+		TestUtils.rebuildTestRoot();
+	}
+
+	@AfterEach
+	public void killCore () {
+		TestUtils.deleteTestRoot();
+	}
+
+	@Test
+	@DisplayName("Workspace save")
+	void workspaceSave () {
+		Workspace workspace = new Workspace().name("traqtor", "demo", "workspace");
+		Assertions.assertTrue(!workspace.save().ok());
+		TestUtils.deleteTestRoot();
+		Assertions.assertTrue(!workspace.root(TestUtils.testRoot()).save().ok());
+		TestUtils.rebuildTestRoot();
+		Assertions.assertTrue(workspace.saveAs(TestUtils.testRoot()).ok());
+	}
+
+}

traqtor-aio/src/test/java/link/pagan/traqtor/test/project/universe/UniverseProjectTest.java

@@ -0,0 +1,175 @@
+package link.pagan.traqtor.test.project.universe;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import link.pagan.traqtor.Workspace;
+import link.pagan.traqtor.project.universe.Universe;
+import link.pagan.traqtor.project.universe.UniverseProject;
+import link.pagan.traqtor.project.universe.element.Element;
+import link.pagan.traqtor.project.universe.element.Particle;
+import link.pagan.traqtor.project.universe.schema.DatatypeSchema;
+import link.pagan.traqtor.project.universe.schema.impl.LiteralDataTypeSchema;
+import link.pagan.traqtor.project.universe.schema.impl.LogicDatatypeSchema;
+import link.pagan.traqtor.project.universe.schema.impl.NumericDatatypeSchema;
+import link.pagan.traqtor.project.universe.schema.impl.TemporalDatatypeSchema;
+import link.pagan.traqtor.project.universe.schema.impl.data.literal.StringDataType;
+import link.pagan.traqtor.project.universe.schema.impl.data.numeric.integer.IntDataType;
+import link.pagan.traqtor.project.universe.schema.impl.data.numeric.real.DoubleDataType;
+import link.pagan.traqtor.project.universe.schema.impl.data.numeric.real.FloatDataType;
+import link.pagan.traqtor.test.TestUtils;
+import link.pagan.traqtor.util.RegExpHelper;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+/** @author Edward M. Kagan {@literal <}kaganem{@literal @}2pm.tech{@literal >} */
+public class UniverseProjectTest {
+
+	@BeforeEach
+	public void cleanTestDir () {
+		TestUtils.rebuildTestRoot();
+	}
+
+	@AfterEach
+	public void killCore () {
+		TestUtils.deleteTestRoot();
+	}
+
+	@Test
+	@DisplayName("Universe Project save")
+	void projectSaveAs () throws JsonProcessingException {
+		DatatypeSchema LITERAL = LiteralDataTypeSchema.instance();
+		DatatypeSchema LOGIC = LogicDatatypeSchema.instance();
+		DatatypeSchema NUMERIC = NumericDatatypeSchema.instance();
+		DatatypeSchema TEMPORAL = TemporalDatatypeSchema.instance();
+
+		StringDataType STRING = LiteralDataTypeSchema.instance().STRING;
+		// LogicDataType BOOLEAN = LOGIC.BOOLEAN;
+		// IntegerDataType BYTE = NUMERIC.BYTE;
+		// IntegerDataType SHORT = NUMERIC.SHORT;
+		IntDataType INTEGER = NumericDatatypeSchema.instance().INTEGER;
+		// IntegerDataType LONG = NUMERIC.LONG;
+		FloatDataType FLOAT = NumericDatatypeSchema.instance().FLOAT;
+		DoubleDataType DOUBLE = NumericDatatypeSchema.instance().DOUBLE;
+		// TemporalDataType DATE = TEMPORAL.DATE;
+		// TemporalDataType TIME = TEMPORAL.TIME;
+		// TemporalDataType TIMESTAMP = TEMPORAL.TIMESTAMP;
+
+		Workspace workspace = new Workspace().name("traqtor", "demo", "workspace");
+
+		UniverseProject base = workspace.universe().name("base").schemas(LITERAL, LOGIC, NUMERIC, TEMPORAL);
+
+		Particle<StringDataType> email = STRING.particle()
+		                                       .name("email")
+		                                       .description("email as main identifier for an account")
+		                                       .constraints(STRING.min(4), STRING.max(512), STRING.regExp(RegExpHelper.EMAIL));
+		Particle<StringDataType> phone = STRING.particle()
+		                                       .name("phone")
+		                                       .description("alternative identifier for an account")
+		                                       .optional(true)
+		                                       .constraints(STRING.min(10), STRING.max(32), STRING.regExp(RegExpHelper.PHONE));
+		Particle<StringDataType> password = STRING.particle()
+		                                          .name("phone")
+		                                          .description("account password")
+		                                          .constraints(STRING.min(8), STRING.max(32));
+
+		Element account = base.atom()
+		                      .name("account")
+		                      .particles(email, phone, password);
+
+		Particle<StringDataType> lastName = STRING.particle()
+		                                          .name("last", "name")
+		                                          .description("last name of user")
+		                                          .constraints(STRING.max(64), STRING.min(1));
+
+		Particle<StringDataType> firstName = STRING.particle()
+		                                           .name("first", "name")
+		                                           .description("first name of user")
+		                                           .optional(true)
+		                                           .constraints(STRING.max(64), STRING.min(1));
+
+		Particle<IntDataType> age = INTEGER.particle()
+		                                   .name("age")
+		                                   .description("age of user owning an account")
+		                                   .constraints(INTEGER.min(18), INTEGER.max(65));
+
+		Element accountDetails = base.atom()
+		                             .name("account", "details")
+		                             .particles(lastName, firstName, age);
+
+		Particle<DoubleDataType> length = DOUBLE.particle()
+		                                        .name("length")
+		                                        .description("penis length")
+		                                        .constraints(DOUBLE.min(0), DOUBLE.max(40));
+
+		Element male = base.isotope(account)
+		                   .name("male")
+		                   .particles(length);
+
+		Particle<FloatDataType> depth = FLOAT.particle()
+		                                     .name("depth")
+		                                     .description("vagina depth")
+		                                     .constraints(DOUBLE.min(0), DOUBLE.max(40));
+
+		base.isotope(account)
+		    .name("female")
+		    .particles(depth);
+
+		Particle<StringDataType> positionName = STRING.particle()
+		                                              .name("title")
+		                                              .description("position name")
+		                                              .constraints(STRING.max(255), STRING.min(3));
+
+		Element position = base.atom()
+		                       .name("position")
+		                       .particles(positionName);
+
+		Particle<StringDataType> idNumber = STRING.particle()
+		                                          .name("number")
+		                                          .description("military id number")
+		                                          .constraints(STRING.max(11), STRING.min(11));
+
+		Element militaryId = base.atom()
+		                         .name("military", "id")
+		                         .particles(idNumber);
+
+		Element profile = base.atom()
+		                      .name(("profile"));
+
+		base.links(Universe.linkOneToOne()
+		                   .from(account)
+		                   .fromName("details")
+		                   .to(accountDetails)
+		                   .toName("account")
+		                   .mandatory(), Universe.linkOneToMany()
+		                                         .from(account)
+		                                         .fromName("profiles")
+		                                         .to(profile)
+		                                         .toName("account")
+		                                         .more(0), Universe.linkManyToMany()
+		                                                           .from(profile)
+		                                                           .fromName("positions")
+		                                                           .to(position)
+		                                                           .toName("profiles"), Universe.linkOneToOne()
+		                                                                                        .from(male)
+		                                                                                        .fromName("military", "id")
+		                                                                                        .to(militaryId)
+		                                                                                        .toName("account"));
+
+		UniverseProject data = workspace.universe()
+		                                .name("data")
+		                                .schemas(LITERAL);
+
+		Particle<StringDataType> organizationName = STRING.particle()
+		                                                  .name("name")
+		                                                  .description("full name of an organization")
+		                                                  .constraints(STRING.max(255), STRING.min(3));
+		Element organization = data.atom();
+		organization.name("organization");
+		organization.particles(organizationName);
+
+		Assertions.assertTrue(workspace.saveAs(TestUtils.testRoot()).ok());
+	}
+
+}