fix(TUP-27184): org.talend.core.model.process.INode.getLabel() return

null when use it in javajet

main/plugins/org.talend.core.runtime/src/main/java/org/talend/core/model/process/AbstractNode.java

@@ -1081,8 +1081,7 @@ public abstract class AbstractNode implements INode {
 
     @Override
     public void setLabel(String label) {
-        // TODO Auto-generated method stub
-
+        this.label = label;
     }
 
     @Override

main/plugins/org.talend.core.runtime/src/main/java/org/talend/core/model/utils/NodeUtil.java

@@ -1232,4 +1232,42 @@ public class NodeUtil {
 
         return true;
     }
+    
+    public static String getLabel(INode node) {
+        String label = node.getLabel();
+        if(label == null) {
+            return node.getUniqueName();
+        }
+        
+        label = label.trim();
+        
+        if(label.isEmpty()) {
+            return node.getUniqueName();
+        }
+        
+        if(isValidJavaStringLiteral(label)) {
+            return "\"" + label + "\"";
+        }
+        
+        return label;
+    }
+    
+    private static boolean isValidJavaStringLiteral(String value) {
+        boolean escape = false;
+        for(int i=0;i<value.length();i++) {
+            char c = value.charAt(i);
+            
+            if(c == '"' && !escape) {
+                return false;
+            }
+            
+            if(c == '\\') {
+                escape = !escape;
+            } else {
+                escape = false;
+            }
+        }
+        
+        return true;
+    }
 }