Add properties from DataElement<T>

Signed-off-by: Daniel Bluhm <bluhmdj@ornl.gov>

org.eclipse.ice.dev.annotations/src/main/resources/templates/DataElement.vm

@@ -2,16 +2,23 @@
 package $package;
 #end
 
+import java.io.Serializable;
 import java.util.UUID;
 import lombok.Data;
+import org.eclipse.ice.renderer.JavascriptValidator;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility;
+import com.fasterxml.jackson.annotation.PropertyAccessor;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
 
 /**
  * This is an implementation of $interface that satisfies the dependencies of
  * the @DataElement Annotation and was auto-generated by the ICE Framework.
  */
-@Data public class ${class} implements ${interface} {
+@Data public class ${class} implements ${interface}, Serializable {
 
 	/**
 	 * Logging tool
@@ -24,29 +31,29 @@ import org.slf4j.LoggerFactory;
 	private UUID privateId;
 
 	/**
-	 * a simple name for the data name
+	 * A simple name for the data
 	 */
-	private String name;
+	private String name = "name";
 
 	/**
-	 * a simple description for the data
+	 * A simple description for the data
 	 */
-	private String description;
+	private String description = "description";
 
 	/**
-	 * a unique identifier
+	 * A unique identifier
 	 */
-	private String id;
+	private String id = "0";
 
 	/**
-	 * a comment that annotates the data in meaningful way
+	 * A comment that annotates the data in meaningful way
 	 */
-	private String comment;
+	private String comment = "no comment";
 
 	/**
-	 * the context (a tag) in which the data should be considered
+	 * The context (a tag) in which the data should be considered
 	 */
-	private String context;
+	private String context = "default";
 
 	/**
 	 * This value is true if the element should be regarded as a client as required.
@@ -59,10 +66,86 @@ import org.slf4j.LoggerFactory;
 	 */
 	private boolean secret;
 
+	/**
+	 * The validator used to check the correctness of the data
+	 */
+	private JavascriptValidator<${class}> validator;
+
 	/**
 	 * Generated from DataField annotations
 	 */
 #foreach($field in $fields)
 	protected ${field.ClassName} ${field.Name};
 #end
+
+	/**
+	 * This operation serializes the data element to a string in verified JSON.
+	 * 
+	 * @return a JSON string describing the element
+	 */
+	public String toJSON() {
+		String value = null;
+		// Convert to json using Jackson
+		ObjectMapper mapper = new ObjectMapper();
+		// Set visibility so that only methods are serialized. This removes duplication
+		// otherwise produced due to the convenience methods.
+		mapper.setVisibility(PropertyAccessor.FIELD, Visibility.ANY);
+		mapper.setVisibility(PropertyAccessor.GETTER, Visibility.NONE);
+		mapper.setVisibility(PropertyAccessor.IS_GETTER, Visibility.NONE);
+		try {
+			value = mapper.writerWithDefaultPrettyPrinter().writeValueAsString(this);
+		} catch (JsonProcessingException e) {
+			logger.error("Unable to write DataElement to string!", e);
+		}
+
+		return value;
+	}
+
+	/**
+	 * This operation deserializes a valid JSON string and tries to load it into the
+	 * object.
+	 * 
+	 * @param jsonDataElement the contents of this data element as JSON
+	 */
+	public void fromJSON(final String jsonDataElement) {
+
+		// Load the data from the string with Jackson.
+		ObjectMapper mapper = new ObjectMapper();
+		try {
+			JsonNode rootNode = mapper.readTree(jsonDataElement);
+
+			// Static Fields
+			#foreach($prop in ["name", "description", "id", "comment", "context"])
+			// $prop
+			JsonNode ${prop}Node = rootNode.get("$prop");
+			$prop = mapper.treeToValue(${prop}Node, String.class);
+
+			#end
+			// Required and secret booleans
+			JsonNode requiredNode = rootNode.get("required");
+			required = mapper.treeToValue(requiredNode, Boolean.class);
+			JsonNode secretNode = rootNode.get("secret");
+			secret = mapper.treeToValue(secretNode, Boolean.class);
+
+			// Private ids
+			JsonNode privateIdNode = rootNode.get("privateId");
+			privateId = mapper.treeToValue(privateIdNode, UUID.class);
+
+			// Validators
+			JsonNode validatorNode = rootNode.get("validator");
+			validator = mapper.treeToValue(validatorNode, validator.getClass());
+
+			// Dynamic Fields
+			#foreach($field in $fields)
+			// ${field.Name}
+			JsonNode ${field.Name}Node = rootNode.get("${field.Name}");
+			${field.Name} = mapper.treeToValue(${field.Name}Node, ${field.ClassName}.class);
+
+			#end
+		} catch (JsonProcessingException e) {
+			logger.error("Unable to read DataElement from string!", e);
+		}
+
+		return;
+	}
 }

org.eclipse.ice.renderer/src/main/java/org/eclipse/ice/renderer/Person.java

@@ -5,7 +5,8 @@
 
 @DataElement
 @DataField(fieldName = "age", fieldType = String.class)
-@DataField(fieldName = "name", fieldType = String.class)
+@DataField(fieldName = "firstName", fieldType = String.class)
+@DataField(fieldName = "lastName", fieldType = String.class)
 public interface Person {
 	//void foo();
 }