Recent changes to Home

WikiPage Home modified by lenysoft

lenysoft — Mon, 08 Aug 2011 12:54:42 -0000

--- v2 
+++ v3 
@@ -12,34 +12,34 @@
 -------------------
 
 add , substract , divide , multiply , power , sqrt, abs
-
 and, or, not, >, >=, <, <=, ==, !=, !
-
 date diff, date add
-
 length, tolower, toupper, substring, ends with, starts with,
-
 contains, match
-
 between, in list
 
+Example
+-------
 ~~~~~~
 String s = "5 + externalfunction(TST1,TST2,TST3)";
 		
 ArrayList l=new ArrayList();
 l.add(new ExternalFunctionTest());
 		
 Map m=new TreeMap();
 m.put("TST1", 1);
 m.put("TST2", 2);
 m.put("TST3", 3);
 	
 try {	
 			
 	ExpressionImpl x1 = new ExpressionImpl(s);
 	x1.setExternalFunctions(l);
 	x1.prepare();
-	Object result = x1.evaluate(variables);
+        
+        //To evaluate more than once
+        ExpressionImpl x2=x1.getInstance();
+	Object result = x2.evaluate(variables);
 			
 } catch (Exception e) {

WikiPage Home modified by lenysoft

lenysoft — Mon, 08 Aug 2011 12:52:37 -0000

--- v1 
+++ v2 
@@ -1,5 +1,49 @@
-Welcome to your wiki!
-
-This is the default page, edit it as you see fit. To add a page simply reference it within brackets, e.g.: [SamplePage].
-
-The wiki uses [Markdown](/p/javex/wiki/markdown_syntax/) syntax.
+Javex
+-----
+
+Javex is a Java expression parser and evaluator.
+It can parse and evaluate math, logical, string and date functions.
+
+You can prepare (parse) the expression one time and then evaluate it multiple times with distincts sets of variables.
+
+In addition, javex support external functions (user defined functions) into the expression.
+
+Functions supported
+-------------------
+
+add , substract , divide , multiply , power , sqrt, abs
+
+and, or, not, >, >=, <, <=, ==, !=, !
+
+date diff, date add
+
+length, tolower, toupper, substring, ends with, starts with,
+
+contains, match
+
+between, in list
+
+~~~~~~
+String s = "5 + externalfunction(TST1,TST2,TST3)";
+		
+ArrayList l=new ArrayList();
+l.add(new ExternalFunctionTest());
+		
+Map m=new TreeMap();
+m.put("TST1", 1);
+m.put("TST2", 2);
+m.put("TST3", 3);
+	
+try {	
+			
+	ExpressionImpl x1 = new ExpressionImpl(s);
+	x1.setExternalFunctions(l);
+	x1.prepare();
+	Object result = x1.evaluate(variables);
+			
+} catch (Exception e) {
+		
+	System.out.println("error");
+			
+}
+~~~~~~

WikiPage Home modified by lenysoft

lenysoft — Sat, 16 Jul 2011 14:52:00 -0000

Welcome to your wiki! This is the default page, edit it as you see fit. To add a page simply reference it within brackets, e.g.: [SamplePage]. The wiki uses [Markdown](/p/javex/wiki/markdown_syntax/) syntax.