querydsl-core/src/main/java/com/mysema/query/serialization/BaseSerializer.java

@@ -159,6 +159,7 @@ public abstract class BaseSerializer<SubType extends BaseSerializer<SubType>> ex
             }
             strings[i] = toString(args.get(i),wrap);
         }
+        // TODO : use faster custom rendering
         appendOperationResult(operator, String.format(pattern, strings));
     }
     

querydsl-core/src/main/java/com/mysema/query/serialization/OperationPattern.java

@@ -0,0 +1,60 @@
+package com.mysema.query.serialization;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import com.mysema.util.Assert;
+
+/**
+ * PatternElement provides
+ *
+ * @author tiwe
+ * @version $Id$
+ */
+public class OperationPattern {
+
+//    private static final Pattern patter
+    
+    private final String pattern;
+    
+    private final List<Element> elements = new ArrayList<Element>();
+    
+    public OperationPattern(String pattern){
+        this.pattern = Assert.notNull(pattern);
+    }
+    
+    public int hashCode(){
+        return pattern.hashCode();
+    }
+    
+    public boolean equals(Object o){
+        if (o == this){
+            return true;
+        }else if (o instanceof OperationPattern){
+            return ((OperationPattern)o).pattern.equals(pattern);
+        }else{
+            return false;
+        }
+    }
+    
+    public class Element{
+        
+        private final int index;
+        
+        private final String text;
+        
+        public Element(int index, String text){
+            this.index = index;
+            this.text = text;            
+        }
+        
+        public int getIndex() {
+            return index;
+        }
+
+        public String getText() {
+            return text;
+        }
+        
+    }
+}

querydsl-core/src/main/java/com/mysema/query/serialization/OperationPatterns.java

@@ -20,6 +20,7 @@ import com.mysema.query.grammar.types.PathMetadata.PathType;
  * @author tiwe
  * @version $Id$
  */
+// TODO : replace String.format based expressions with custom expressions
 public abstract class OperationPatterns{
    
     private final Map<Op<?>,String> patterns = new HashMap<Op<?>,String>();