diff --git a/agent.iml b/agent.iml
index 62ccc36..e3d8113 100644
--- a/agent.iml
+++ b/agent.iml
@@ -19,10 +19,9 @@
     <output-test url="file://$MODULE_DIR$/target/test-classes" />
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testapp/java" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/resources" type="java-test-resource" />
       <sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
+      <sourceFolder url="file://$MODULE_DIR$/src/testapp/java" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
       <excludeFolder url="file://$MODULE_DIR$/target" />
     </content>
     <orderEntry type="inheritedJdk" />
diff --git a/pom.xml b/pom.xml
index 8d8eee2..6b4b98b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>perfix</groupId>
-    <artifactId>agent</artifactId>
+    <artifactId>perfix-agent</artifactId>
     <version>0.1-SNAPSHOT</version>
     <packaging>jar</packaging>
 
diff --git a/src/main/java/perfix/Registry.java b/src/main/java/perfix/Registry.java
index df58cab..a209178 100644
--- a/src/main/java/perfix/Registry.java
+++ b/src/main/java/perfix/Registry.java
@@ -40,11 +40,13 @@ public class Registry {
         });
         return sortedByTotal;
     }
-//work in progress
-//    public static Map<String, Set<Report>> getCallStack() {
-//        callstack.forEach((name,children)->{
-//
-//        });
-//    }
+
+    //work in progress
+    public static Map<String, Set<Report>> getCallStack() {
+        callstack.forEach((name, children) -> {
+
+        });
+        return null;
+    }
 
 }
diff --git a/src/main/java/perfix/instrument/ClassInstrumentor.java b/src/main/java/perfix/instrument/ClassInstrumentor.java
index 298fa9b..0aa361d 100644
--- a/src/main/java/perfix/instrument/ClassInstrumentor.java
+++ b/src/main/java/perfix/instrument/ClassInstrumentor.java
@@ -7,7 +7,9 @@ import javassist.NotFoundException;
 import perfix.MutableBoolean;
 
 import java.io.IOException;
+import java.lang.instrument.ClassFileTransformer;
 import java.lang.instrument.Instrumentation;
+import java.security.ProtectionDomain;
 import java.util.List;
 
 import static java.util.Arrays.stream;
@@ -30,9 +32,14 @@ public class ClassInstrumentor extends Instrumentor {
         }
     }
 
+    @Override
     public void instrumentCode(Instrumentation inst) {
-        inst.addTransformer((classLoader, resource, aClass, protectionDomain, uninstrumentedByteCode)
-                -> instrumentCodeForClass(includes, resource, uninstrumentedByteCode));
+        inst.addTransformer(new ClassFileTransformer() {
+            @Override
+            public byte[] transform(ClassLoader loader, String className, Class<?> classBeingRedefined, ProtectionDomain protectionDomain, byte[] classfileBuffer) {
+                return instrumentCodeForClass(includes, className, classfileBuffer);
+            }
+        });
     }
 
     private byte[] instrumentCodeForClass(List<String> includes, String resource, byte[] uninstrumentedByteCode) {
@@ -40,10 +47,10 @@ public class ClassInstrumentor extends Instrumentor {
             try {
                 CtClass ctClass = getCtClassForResource(resource);
 
-                if (servletInstrumentor.isServletImpl(resource)){
+                if (servletInstrumentor.isServletImpl(resource)) {
                     return servletInstrumentor.instrumentServlet(ctClass, uninstrumentedByteCode);
                 }
-                
+
                 if (jdbcInstrumentor.isJdbcStatementImpl(resource, ctClass)) {
                     return jdbcInstrumentor.instrumentJdbcStatement(ctClass, uninstrumentedByteCode);
                 }
diff --git a/src/main/java/perfix/instrument/Instrumentor.java b/src/main/java/perfix/instrument/Instrumentor.java
index 981c98d..ca9bc7d 100644
--- a/src/main/java/perfix/instrument/Instrumentor.java
+++ b/src/main/java/perfix/instrument/Instrumentor.java
@@ -8,23 +8,28 @@ import java.util.List;
 
 public abstract class Instrumentor {
     static final String JAVA_STRING = "java.lang.String";
+    static final String JAVA_HASHMAP = "java.util.HashMap";
     static final String PERFIX_METHODINVOCATION_CLASS = "perfix.MethodInvocation";
     static final String JAVASSIST_FIRST_ARGUMENT_NAME = "$1";
     static final String JAVASSIST_RETURNVALUE = "$_";
 
     final ClassPool classpool;
     final List<String> includes;
-    CtClass perfixMethodInvocationClass;
-    CtClass stringClass;
+    protected CtClass stringClass;
+    protected CtClass hashMapClass;
+    protected CtClass perfixMethodInvocationClass;
 
     Instrumentor(List<String> includes, ClassPool classPool) {
         this.includes = includes;
         this.classpool = classPool;
+
         try {
             perfixMethodInvocationClass = getCtClass(PERFIX_METHODINVOCATION_CLASS);
             stringClass = classpool.get(JAVA_STRING);
+            hashMapClass = classPool.get(JAVA_HASHMAP);
 
         } catch (NotFoundException e) {
+            e.printStackTrace();
             //suppress TODO implement trace
         }
     }
@@ -37,7 +42,8 @@ public abstract class Instrumentor {
         return classInstrumentor;
     }
 
-    public void instrumentCode(Instrumentation inst){}
+    public void instrumentCode(Instrumentation inst) {
+    }
 
     void instrumentMethod(CtMethod methodToinstrument) {
         instrumentMethod(methodToinstrument, "\"" + methodToinstrument.getLongName() + "\"");
diff --git a/src/main/java/perfix/instrument/JdbcInstrumentor.java b/src/main/java/perfix/instrument/JdbcInstrumentor.java
index a85e4dd..ccbae05 100644
--- a/src/main/java/perfix/instrument/JdbcInstrumentor.java
+++ b/src/main/java/perfix/instrument/JdbcInstrumentor.java
@@ -3,7 +3,10 @@ package perfix.instrument;
 import javassist.*;
 
 import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
+import java.util.stream.Stream;
 
 import static java.util.Arrays.stream;
 
@@ -22,10 +25,15 @@ public class JdbcInstrumentor extends Instrumentor {
 
     private static final String PERFIX_SQLSTATEMENT_FIELD = "_perfixSqlStatement";
     private static final String PERFIX_SETSQL_METHOD = "setSqlForPerfix";
-
+    private static CtClass statementTextClass = null;
 
     JdbcInstrumentor(List<String> includes, ClassPool classPool) {
         super(includes, classPool);
+        try {
+            statementTextClass = classpool.get("perfix.instrument.StatementText");
+        } catch (NotFoundException e) {
+            e.printStackTrace();
+        }
     }
 
     /* Need to enhance interface to be able to set a statement (string) for perfix. */
@@ -33,17 +41,20 @@ public class JdbcInstrumentor extends Instrumentor {
         try {
             preparedStatementInterface.getDeclaredMethod(PERFIX_SETSQL_METHOD);
         } catch (NotFoundException e1) {
+            e1.printStackTrace();
             try {
                 CtMethod setSqlForPerfix = new CtMethod(CtClass.voidType, PERFIX_SETSQL_METHOD, new CtClass[]{stringClass}, preparedStatementInterface);
                 preparedStatementInterface.addMethod(setSqlForPerfix);
 
             } catch (CannotCompileException e2) {
+                e2.printStackTrace();
                 return uninstrumentedByteCode;
             }
         }
         try {
             return bytecode(preparedStatementInterface);
         } catch (CannotCompileException | IOException e) {
+            e.printStackTrace();
             return uninstrumentedByteCode;
         }
     }
@@ -79,6 +90,7 @@ public class JdbcInstrumentor extends Instrumentor {
             return bytecode(classToInstrument);
         } catch (NotFoundException | CannotCompileException | IOException e) {
             // suppress
+            e.printStackTrace();
         }
         return uninstrumentedByteCode;
     }
@@ -86,24 +98,53 @@ public class JdbcInstrumentor extends Instrumentor {
     /* */
     byte[] instrumentJdbcPreparedStatementImpl(CtClass preparedStatementClass, byte[] uninstrumentedByteCode) {
         try {
-            addPerfixStatementField(preparedStatementClass);
+            addPerfixFields(preparedStatementClass);
             addPerfixStatementSetter(preparedStatementClass);
 
             // instrument execute to record query duration
             stream(preparedStatementClass.getDeclaredMethods(JAVASQL_EXECUTE_METHOD)).forEach(method ->
-                    instrumentMethod(method, PERFIX_SQLSTATEMENT_FIELD)
+                    instrumentMethod(method, PERFIX_SQLSTATEMENT_FIELD + ".toString()")
             );
 
             // instrument executeQuery to record query duration
             stream(preparedStatementClass.getDeclaredMethods(JAVASQL_EXECUTEQUERY_METHOD)).forEach(method ->
-                    instrumentMethod(method, PERFIX_SQLSTATEMENT_FIELD)
+                    instrumentMethod(method, PERFIX_SQLSTATEMENT_FIELD + ".toString()")
             );
 
             // instrument executeUpdate to record query duration
             stream(preparedStatementClass.getDeclaredMethods(JAVASQL_EXECUTEUPDATE_METHOD)).forEach(method ->
-                    instrumentMethod(method, PERFIX_SQLSTATEMENT_FIELD)
+                    instrumentMethod(method, PERFIX_SQLSTATEMENT_FIELD + ".toString()")
             );
 
+            getDeclaredMethods(preparedStatementClass, "setString", "setObject", "setDate", "setTime", "setTimestamp")
+                    .forEach(method -> {
+                                try {
+                                    method.insertBefore(PERFIX_SQLSTATEMENT_FIELD + ".set($1, \"\'\"+$2+\"\'\");");
+                                } catch (CannotCompileException e) {
+                                    throw new RuntimeException(e);
+                                }
+                            }
+                    );
+            getDeclaredMethods(preparedStatementClass,
+                    "setInt", "setFloat", "setDouble", "setBoolean", "setLong", "setShort")
+                    .forEach(method -> {
+                                try {
+                                    method.insertBefore(PERFIX_SQLSTATEMENT_FIELD + ".set($1, $2);");
+                                } catch (CannotCompileException e) {
+                                    throw new RuntimeException(e);
+                                }
+                            }
+                    );
+            getDeclaredMethods(preparedStatementClass, "setNull")
+                    .forEach(method -> {
+                                try {
+                                    method.insertBefore(PERFIX_SQLSTATEMENT_FIELD + ".set($1, \"[NULL]\");");
+                                } catch (CannotCompileException e) {
+                                    throw new RuntimeException(e);
+                                }
+                            }
+                    );
+
             return bytecode(preparedStatementClass);
         } catch (NotFoundException | CannotCompileException | IOException e) {
             e.printStackTrace();
@@ -111,6 +152,21 @@ public class JdbcInstrumentor extends Instrumentor {
         }
     }
 
+    private Stream<CtMethod> getDeclaredMethods(CtClass preparedStatementClass, String... methodnames) {
+        List<CtMethod> methods = new ArrayList<>();
+        for (String methodname : methodnames) {
+            try {
+                methods.addAll(Arrays.asList(preparedStatementClass.getDeclaredMethods(methodname)));
+
+            } catch (NotFoundException e) {
+                e.printStackTrace();
+                throw new RuntimeException(e);
+            }
+        }
+
+        return methods.stream();
+    }
+
 
     byte[] instrumentJdbcStatement(CtClass classToInstrument, byte[] uninstrumentedByteCode) {
         try {
@@ -124,14 +180,15 @@ public class JdbcInstrumentor extends Instrumentor {
             );
             return bytecode(classToInstrument);
         } catch (Exception e) {
+            e.printStackTrace();
             return uninstrumentedByteCode;
         }
 
     }
 
-    private void addPerfixStatementField(CtClass preparedStatementClass) throws CannotCompileException {
+    private void addPerfixFields(CtClass preparedStatementClass) throws CannotCompileException, NotFoundException {
         // add a String field that will contain the statement
-        CtField perfixSqlField = new CtField(stringClass, PERFIX_SQLSTATEMENT_FIELD, preparedStatementClass);
+        CtField perfixSqlField = new CtField(statementTextClass, PERFIX_SQLSTATEMENT_FIELD, preparedStatementClass);
         perfixSqlField.setModifiers(Modifier.PRIVATE);
         preparedStatementClass.addField(perfixSqlField);
     }
@@ -140,7 +197,7 @@ public class JdbcInstrumentor extends Instrumentor {
         // add setter for the new field
         CtMethod setSqlForPerfix = new CtMethod(CtClass.voidType, PERFIX_SETSQL_METHOD, new CtClass[]{stringClass}, preparedStatementImplClass);
         setSqlForPerfix.setModifiers(Modifier.PUBLIC);
-        setSqlForPerfix.setBody(PERFIX_SQLSTATEMENT_FIELD + "=" + JAVASSIST_FIRST_ARGUMENT_NAME + ";");
+        setSqlForPerfix.setBody(PERFIX_SQLSTATEMENT_FIELD + "= new perfix.instrument.StatementText(" + JAVASSIST_FIRST_ARGUMENT_NAME + ");");
         preparedStatementImplClass.addMethod(setSqlForPerfix);
     }
 
diff --git a/src/main/java/perfix/instrument/StatementText.java b/src/main/java/perfix/instrument/StatementText.java
new file mode 100644
index 0000000..7b269eb
--- /dev/null
+++ b/src/main/java/perfix/instrument/StatementText.java
@@ -0,0 +1,67 @@
+package perfix.instrument;
+
+public class StatementText {
+
+    private static final char BOUNDVAR_MARK = '?';
+
+    private final Object[] vars;
+    private final StringBuilder sql;
+
+    public StatementText(String sql) {
+        vars = new Object[countVars(sql)];
+        this.sql = new StringBuilder(sql);
+    }
+
+    public void set(int index, Object value) {
+        if (index < 1 || index > vars.length + 1) {
+            throw new IndexOutOfBoundsException("" + index);
+        }
+        vars[index - 1] = value;
+    }
+
+    public void set(int index, int value){
+        set(index, Integer.toString(value));
+    }
+
+    public void set(int index, long value){
+        set(index, Long.toString(value));
+    }
+
+    public void set(int index, double value){
+        set(index, Double.toString(value));
+    }
+
+    public void set(int index, boolean value){
+        set(index, Boolean.toString(value));
+    }
+
+    public void set(int index, float value){
+        set(index, Float.toString(value));
+    }
+
+    public void set(int index, short value){
+        set(index, Short.toString(value));
+    }
+
+    @Override
+    public String toString() {
+        int found = 0;
+        for (int i = 0; i < sql.length(); i++) {
+            if (sql.charAt(i) == BOUNDVAR_MARK) {
+                sql.deleteCharAt(i);
+                sql.insert(i, vars[found++]);
+            }
+        }
+        return sql.toString();
+    }
+
+    private int countVars(String sql) {
+        int count = 0;
+        for (int i = 0; i < sql.length(); i++) {
+            if (sql.charAt(i) == BOUNDVAR_MARK) {
+                count++;
+            }
+        }
+        return count;
+    }
+}
diff --git a/src/main/java/perfix/server/HTTPServer.java b/src/main/java/perfix/server/HTTPServer.java
index 992c791..2892138 100644
--- a/src/main/java/perfix/server/HTTPServer.java
+++ b/src/main/java/perfix/server/HTTPServer.java
@@ -33,58 +33,34 @@ public class HTTPServer extends NanoHTTPD {
                 return perfixMetrics();
             case "/callstack":
                 return perfixCallstack();
-            default:
-                return serveStaticContent(uri);
-        }
-    }
-
-    private Response serveStaticContent(String uri) {
-        if (uri.equals("/")) {
-            uri = "/index.html";
-        }
-        try {
-            InputStream stream = getClass().getResourceAsStream(uri);
-            if (stream == null) {
-                return newFixedLengthResponse(Response.Status.NOT_FOUND, "text/plain", "resource not found");
-            }
-            return newFixedLengthResponse(Response.Status.OK, determineContentType(uri), readFile(stream));
-        } catch (IOException e) {
-            return newFixedLengthResponse(e.toString());
+            default: return newFixedLengthResponse(Response.Status.NOT_FOUND, "text/plain", "NOT FOUND");
         }
     }
 
     private Response perfixMetrics() {
         try {
-            return newFixedLengthResponse(Response.Status.OK, "application/json", Serializer.toJSONString(new ArrayList<>(Registry.sortedMethodsByDuration().values())));
+            return addCors(newFixedLengthResponse(Response.Status.OK, "application/json", Serializer.toJSONString(new ArrayList<>(Registry.sortedMethodsByDuration().values()))));
+
+
         } catch (Exception e) {
             e.printStackTrace();
             return newFixedLengthResponse(e.toString());
         }
     }
 
+    private Response addCors(Response response) {
+        response.addHeader("Access-Control-Allow-Origin","*");
+        response.addHeader("Access-Control-Allow-Headers","Origin, X-Requested-With, Content-Type, Accept");
+        return response;
+    }
+
     private Response perfixCallstack() {
         try {
-            return newFixedLengthResponse(Response.Status.OK, "application/json", Serializer.toJSONString(Registry.getCallStack()));
+            return addCors(newFixedLengthResponse(Response.Status.OK, "application/json", Serializer.toJSONString(Registry.getCallStack())));
         } catch (Exception e) {
             e.printStackTrace();
             return newFixedLengthResponse(e.toString());
         }
     }
 
-    private String readFile(InputStream stream) throws IOException {
-        int nbytes = stream.available();
-        byte[] bytes = new byte[nbytes];
-        stream.read(bytes);
-        return new String(bytes);
-    }
-
-    private String determineContentType(String uri) {
-        if (uri.endsWith(".js")) {
-            return "application/javascript";
-        } else if (uri.endsWith(".css")) {
-            return "text/css";
-        } else {
-            return "text/html";
-        }
-    }
 }
diff --git a/src/main/resources/d3.js b/src/main/resources/d3.js
deleted file mode 100644
index d715d22..0000000
--- a/src/main/resources/d3.js
+++ /dev/null
@@ -1,2 +0,0 @@
-// https://d3js.org Version 5.4.0. Copyright 2018 Mike Bostock.
-(function(t,n){"object"==typeof exports&&"undefined"!=typeof module?n(exports):"function"==typeof define&&define.amd?define(["exports"],n):n(t.d3=t.d3||{})})(this,function(t){"use strict";function n(t,n){return t<n?-1:t>n?1:t>=n?0:NaN}function e(t){return 1===t.length&&(t=function(t){return function(e,r){return n(t(e),r)}}(t)),{left:function(n,e,r,i){for(null==r&&(r=0),null==i&&(i=n.length);r<i;){var o=r+i>>>1;t(n[o],e)<0?r=o+1:i=o}return r},right:function(n,e,r,i){for(null==r&&(r=0),null==i&&(i=n.length);r<i;){var o=r+i>>>1;t(n[o],e)>0?i=o:r=o+1}return r}}}function r(t,n){return[t,n]}function i(t){return null===t?NaN:+t}function o(t,n){var e,r,o=t.length,a=0,u=-1,f=0,c=0;if(null==n)for(;++u<o;)isNaN(e=i(t[u]))||(c+=(r=e-f)*(e-(f+=r/++a)));else for(;++u<o;)isNaN(e=i(n(t[u],u,t)))||(c+=(r=e-f)*(e-(f+=r/++a)));if(a>1)return c/(a-1)}function a(t,n){var e=o(t,n);return e?Math.sqrt(e):e}function u(t,n){var e,r,i,o=t.length,a=-1;if(null==n){for(;++a<o;)if(null!=(e=t[a])&&e>=e)for(r=i=e;++a<o;)null!=(e=t[a])&&(r>e&&(r=e),i<e&&(i=e))}else for(;++a<o;)if(null!=(e=n(t[a],a,t))&&e>=e)for(r=i=e;++a<o;)null!=(e=n(t[a],a,t))&&(r>e&&(r=e),i<e&&(i=e));return[r,i]}function f(t){return function(){return t}}function c(t){return t}function s(t,n,e){t=+t,n=+n,e=(i=arguments.length)<2?(n=t,t=0,1):i<3?1:+e;for(var r=-1,i=0|Math.max(0,Math.ceil((n-t)/e)),o=new Array(i);++r<i;)o[r]=t+r*e;return o}function l(t,n,e){var r,i,o,a,u=-1;if(n=+n,t=+t,e=+e,t===n&&e>0)return[t];if((r=n<t)&&(i=t,t=n,n=i),0===(a=h(t,n,e))||!isFinite(a))return[];if(a>0)for(t=Math.ceil(t/a),n=Math.floor(n/a),o=new Array(i=Math.ceil(n-t+1));++u<i;)o[u]=(t+u)*a;else for(t=Math.floor(t*a),n=Math.ceil(n*a),o=new Array(i=Math.ceil(t-n+1));++u<i;)o[u]=(t-u)/a;return r&&o.reverse(),o}function h(t,n,e){var r=(n-t)/Math.max(0,e),i=Math.floor(Math.log(r)/Math.LN10),o=r/Math.pow(10,i);return 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e=Math.sqrt(n/P_),r=e*C_;t.moveTo(0,-e),t.lineTo(r,0),t.lineTo(0,e),t.lineTo(-r,0),t.closePath()}},R_=Math.sin(M_/10)/Math.sin(7*M_/10),L_=Math.sin(T_/10)*R_,D_=-Math.cos(T_/10)*R_,U_={draw:function(t,n){var e=Math.sqrt(.8908130915292852*n),r=L_*e,i=D_*e;t.moveTo(0,-e),t.lineTo(r,i);for(var o=1;o<5;++o){var a=T_*o/5,u=Math.cos(a),f=Math.sin(a);t.lineTo(f*e,-u*e),t.lineTo(u*r-f*i,f*r+u*i)}t.closePath()}},q_={draw:function(t,n){var e=Math.sqrt(n),r=-e/2;t.rect(r,r,e,e)}},O_=Math.sqrt(3),Y_={draw:function(t,n){var e=-Math.sqrt(n/(3*O_));t.moveTo(0,2*e),t.lineTo(-O_*e,-e),t.lineTo(O_*e,-e),t.closePath()}},B_=Math.sqrt(3)/2,F_=1/Math.sqrt(12),I_=3*(F_/2+1),j_={draw:function(t,n){var e=Math.sqrt(n/I_),r=e/2,i=e*F_,o=r,a=e*F_+e,u=-o,f=a;t.moveTo(r,i),t.lineTo(o,a),t.lineTo(u,f),t.lineTo(-.5*r-B_*i,B_*r+-.5*i),t.lineTo(-.5*o-B_*a,B_*o+-.5*a),t.lineTo(-.5*u-B_*f,B_*u+-.5*f),t.lineTo(-.5*r+B_*i,-.5*i-B_*r),t.lineTo(-.5*o+B_*a,-.5*a-B_*o),t.lineTo(-.5*u+B_*f,-.5*f-B_*u),t.closePath()}},H_=[E_,k_,z_,q_,U_,Y_,j_];Bf.prototype={areaStart:function(){this._line=0},areaEnd:function(){this._line=NaN},lineStart:function(){this._x0=this._x1=this._y0=this._y1=NaN,this._point=0},lineEnd:function(){switch(this._point){case 3:Yf(this,this._x1,this._y1);case 2:this._context.lineTo(this._x1,this._y1)}(this._line||0!==this._line&&1===this._point)&&this._context.closePath(),this._line=1-this._line},point:function(t,n){switch(t=+t,n=+n,this._point){case 0:this._point=1,this._line?this._context.lineTo(t,n):this._context.moveTo(t,n);break;case 1:this._point=2;break;case 2:this._point=3,this._context.lineTo((5*this._x0+this._x1)/6,(5*this._y0+this._y1)/6);default:Yf(this,t,n)}this._x0=this._x1,this._x1=t,this._y0=this._y1,this._y1=n}},Ff.prototype={areaStart:Of,areaEnd:Of,lineStart:function(){this._x0=this._x1=this._x2=this._x3=this._x4=this._y0=this._y1=this._y2=this._y3=this._y4=NaN,this._point=0},lineEnd:function(){switch(this._point){case 1:this._context.moveTo(this._x2,this._y2),this._context.closePath();break;case 2:this._context.moveTo((this._x2+2*this._x3)/3,(this._y2+2*this._y3)/3),this._context.lineTo((this._x3+2*this._x2)/3,(this._y3+2*this._y2)/3),this._context.closePath();break;case 3:this.point(this._x2,this._y2),this.point(this._x3,this._y3),this.point(this._x4,this._y4)}},point:function(t,n){switch(t=+t,n=+n,this._point){case 0:this._point=1,this._x2=t,this._y2=n;break;case 1:this._point=2,this._x3=t,this._y3=n;break;case 2:this._point=3,this._x4=t,this._y4=n,this._context.moveTo((this._x0+4*this._x1+t)/6,(this._y0+4*this._y1+n)/6);break;default:Yf(this,t,n)}this._x0=this._x1,this._x1=t,this._y0=this._y1,this._y1=n}},If.prototype={areaStart:function(){this._line=0},areaEnd:function(){this._line=NaN},lineStart:function(){this._x0=this._x1=this._y0=this._y1=NaN,this._point=0},lineEnd:function(){(this._line||0!==this._line&&3===this._point)&&this._context.closePath(),this._line=1-this._line},point:function(t,n){switch(t=+t,n=+n,this._point){case 0:this._point=1;break;case 1:this._point=2;break;case 2:this._point=3;var e=(this._x0+4*this._x1+t)/6,r=(this._y0+4*this._y1+n)/6;this._line?this._context.lineTo(e,r):this._context.moveTo(e,r);break;case 3:this._point=4;default:Yf(this,t,n)}this._x0=this._x1,this._x1=t,this._y0=this._y1,this._y1=n}},jf.prototype={lineStart:function(){this._x=[],this._y=[],this._basis.lineStart()},lineEnd:function(){var t=this._x,n=this._y,e=t.length-1;if(e>0)for(var 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\ No newline at end of file
diff --git a/src/main/resources/index.html b/src/main/resources/index.html
deleted file mode 100644
index 4d49e1f..0000000
--- a/src/main/resources/index.html
+++ /dev/null
@@ -1,23 +0,0 @@
-<!DOCTYPE html>
-<html>
-<head>
-    <title>Perfix console</title>
-    <script src="/d3.js"></script>
-    <script src="/perfix.js"></script>
-    <link rel="stylesheet" type="text/css" href="/main.css">
-</head>
-<body class="datagrid">
-<table></table>
-</body>
-<script>
-    function loadData() {
-        d3.json("/report").then(function (data) {
-            // render the table(s)
-            tabulate(data, ['name', 'invocations', 'totalDuration', 'average']);
-        });
-    }
-
-    loadData();
-</script>
-<button type="button" onclick="loadData()">refresh</button>
-</html>
diff --git a/src/main/resources/main.css b/src/main/resources/main.css
deleted file mode 100755
index 83ef0af..0000000
--- a/src/main/resources/main.css
+++ /dev/null
@@ -1,106 +0,0 @@
-.datagrid table {
-    border-collapse: collapse;
-    text-align: left;
-    width: 100%;
-}
-
-.datagrid {
-    font: normal 12px/150% Arial, Helvetica, sans-serif;
-    background: #fff;
-    overflow: hidden;
-    border: 1px solid #006699;
-    -webkit-border-radius: 3px;
-    -moz-border-radius: 3px;
-    border-radius: 3px;
-}
-
-.datagrid table td, .datagrid table th {
-    padding: 3px 10px;
-}
-
-.datagrid table thead th {
-    background: -webkit-gradient(linear, left top, left bottom, color-stop(0.05, #006699), color-stop(1, #00557F));
-    background: -moz-linear-gradient(center top, #006699 5%, #00557F 100%);
-    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#006699', endColorstr='#00557F');
-    background-color: #006699;
-    color: #ffffff;
-    font-size: 15px;
-    font-weight: bold;
-    border-left: 1px solid #0070A8;
-}
-
-.datagrid table thead th:first-child {
-    border: none;
-}
-
-.datagrid table tbody td {
-    color: #00496B;
-    border-left: 1px solid #E1EEF4;
-    font-size: 12px;
-    font-weight: normal;
-}
-
-.datagrid table tbody .alt td {
-    background: #E1EEF4;
-    color: #00496B;
-}
-
-.datagrid table tbody td:first-child {
-    border-left: none;
-}
-
-.datagrid table tbody tr:last-child td {
-    border-bottom: none;
-}
-
-.datagrid table tfoot td div {
-    border-top: 1px solid #006699;
-    background: #E1EEF4;
-}
-
-.datagrid table tfoot td {
-    padding: 0;
-    font-size: 12px
-}
-
-.datagrid table tfoot td div {
-    padding: 2px;
-}
-
-.datagrid table tfoot td ul {
-    margin: 0;
-    padding: 0;
-    list-style: none;
-    text-align: right;
-}
-
-.datagrid table tfoot li {
-    display: inline;
-}
-
-.datagrid table tfoot li a {
-    text-decoration: none;
-    display: inline-block;
-    padding: 2px 8px;
-    margin: 1px;
-    color: #FFFFFF;
-    border: 1px solid #006699;
-    -webkit-border-radius: 3px;
-    -moz-border-radius: 3px;
-    border-radius: 3px;
-    background: -webkit-gradient(linear, left top, left bottom, color-stop(0.05, #006699), color-stop(1, #00557F));
-    background: -moz-linear-gradient(center top, #006699 5%, #00557F 100%);
-    background-color: #006699;
-}
-
-.datagrid table tfoot ul.active, .datagrid table tfoot ul a:hover {
-    text-decoration: none;
-    border-color: #006699;
-    color: #FFFFFF;
-    background: none;
-    background-color: #00557F;
-}
-
-div.dhtmlx_window_active, div.dhx_modal_cover_dv {
-    position: fixed !important;
-}
\ No newline at end of file
diff --git a/src/main/resources/perfix.js b/src/main/resources/perfix.js
deleted file mode 100644
index 943dbe5..0000000
--- a/src/main/resources/perfix.js
+++ /dev/null
@@ -1,29 +0,0 @@
-function tabulate(data, columns) {
-    d3.select('table').remove();
-    var table = d3.select('body').append('table')
-    var thead = table.append('thead')
-    var	tbody = table.append('tbody');
-
-    thead.append('tr')
-        .selectAll('th')
-        .data(columns).enter()
-        .append('th')
-        .text(function (column) { return column; });
-
-    var rows = tbody.selectAll('tr')
-        .data(data)
-        .enter()
-        .append('tr');
-
-    rows.selectAll('td')
-        .data(function (row) {
-            return columns.map(function (column) {
-                return {column: column, value: row[column]};
-            });
-        })
-        .enter()
-        .append('td')
-        .text(function (d) { return d.value; });
-
-    return table;
-}
\ No newline at end of file
diff --git a/src/main/resources/static.json b/src/main/resources/static.json
deleted file mode 100644
index 9ec804f..0000000
--- a/src/main/resources/static.json
+++ /dev/null
@@ -1,44 +0,0 @@
-[
-  {
-    "name": "testperfix.Main.main(java.lang.String[])",
-    "invocations": 1,
-    "totalDuration": 1414878875,
-    "average": 1.414878875E9
-  },
-  {
-    "name": "testperfix.Main.run()",
-    "invocations": 1,
-    "totalDuration": 1414756159,
-    "average": 1.414756159E9
-  },
-  {
-    "name": "testperfix.Main.someJdbcStatentMethod()",
-    "invocations": 1,
-    "totalDuration": 399009103,
-    "average": 3.99009103E8
-  },
-  {
-    "name": "select CURRENT_DATE() -- simple statement",
-    "invocations": 1,
-    "totalDuration": 99705675,
-    "average": 9.9705675E7
-  },
-  {
-    "name": "testperfix.Main.someJdbcPreparedStatementMethod()",
-    "invocations": 1,
-    "totalDuration": 5880308,
-    "average": 5880308.0
-  },
-  {
-    "name": "testperfix.Main.someOtherMethod()",
-    "invocations": 1,
-    "totalDuration": 1285359,
-    "average": 1285359.0
-  },
-  {
-    "name": "select CURRENT_DATE() -- prepared statement",
-    "invocations": 1,
-    "totalDuration": 98241,
-    "average": 98241.0
-  }
-]
\ No newline at end of file
diff --git a/src/main/resources/tree.js b/src/main/resources/tree.js
deleted file mode 100644
index be0123e..0000000
--- a/src/main/resources/tree.js
+++ /dev/null
@@ -1,141 +0,0 @@
-var m = [20, 120, 20, 120],
-    w = 1280 - m[1] - m[3],
-    h = 800 - m[0] - m[2],
-    i = 0,
-    root;
-
-var tree = d3.layout.tree()
-    .size([h, w]);
-
-var diagonal = d3.svg.diagonal()
-    .projection(function(d) { return [d.y, d.x]; });
-
-var vis = d3.select("#body").append("svg:svg")
-    .attr("width", w + m[1] + m[3])
-    .attr("height", h + m[0] + m[2])
-    .append("svg:g")
-    .attr("transform", "translate(" + m[3] + "," + m[0] + ")");
-
-d3.json("flare.json", function(json) {
-    root = json;
-    root.x0 = h / 2;
-    root.y0 = 0;
-
-    function toggleAll(d) {
-        if (d.children) {
-            d.children.forEach(toggleAll);
-            toggle(d);
-        }
-    }
-
-    // Initialize the display to show a few nodes.
-    root.children.forEach(toggleAll);
-    toggle(root.children[1]);
-    toggle(root.children[1].children[2]);
-    toggle(root.children[9]);
-    toggle(root.children[9].children[0]);
-
-    update(root);
-});
-
-function update(source) {
-    var duration = d3.event && d3.event.altKey ? 5000 : 500;
-
-    // Compute the new tree layout.
-    var nodes = tree.nodes(root).reverse();
-
-    // Normalize for fixed-depth.
-    nodes.forEach(function(d) { d.y = d.depth * 180; });
-
-    // Update the nodes…
-    var node = vis.selectAll("g.node")
-        .data(nodes, function(d) { return d.id || (d.id = ++i); });
-
-    // Enter any new nodes at the parent's previous position.
-    var nodeEnter = node.enter().append("svg:g")
-        .attr("class", "node")
-        .attr("transform", function(d) { return "translate(" + source.y0 + "," + source.x0 + ")"; })
-        .on("click", function(d) { toggle(d); update(d); });
-
-    nodeEnter.append("svg:circle")
-        .attr("r", 1e-6)
-        .style("fill", function(d) { return d._children ? "lightsteelblue" : "#fff"; });
-
-    nodeEnter.append("svg:text")
-        .attr("x", function(d) { return d.children || d._children ? -10 : 10; })
-        .attr("dy", ".35em")
-        .attr("text-anchor", function(d) { return d.children || d._children ? "end" : "start"; })
-        .text(function(d) { return d.name; })
-        .style("fill-opacity", 1e-6);
-
-    // Transition nodes to their new position.
-    var nodeUpdate = node.transition()
-        .duration(duration)
-        .attr("transform", function(d) { return "translate(" + d.y + "," + d.x + ")"; });
-
-    nodeUpdate.select("circle")
-        .attr("r", 4.5)
-        .style("fill", function(d) { return d._children ? "lightsteelblue" : "#fff"; });
-
-    nodeUpdate.select("text")
-        .style("fill-opacity", 1);
-
-    // Transition exiting nodes to the parent's new position.
-    var nodeExit = node.exit().transition()
-        .duration(duration)
-        .attr("transform", function(d) { return "translate(" + source.y + "," + source.x + ")"; })
-        .remove();
-
-    nodeExit.select("circle")
-        .attr("r", 1e-6);
-
-    nodeExit.select("text")
-        .style("fill-opacity", 1e-6);
-
-    // Update the links…
-    var link = vis.selectAll("path.link")
-        .data(tree.links(nodes), function(d) { return d.target.id; });
-
-    // Enter any new links at the parent's previous position.
-    link.enter().insert("svg:path", "g")
-        .attr("class", "link")
-        .attr("d", function(d) {
-            var o = {x: source.x0, y: source.y0};
-            return diagonal({source: o, target: o});
-        })
-        .transition()
-        .duration(duration)
-        .attr("d", diagonal);
-
-    // Transition links to their new position.
-    link.transition()
-        .duration(duration)
-        .attr("d", diagonal);
-
-    // Transition exiting nodes to the parent's new position.
-    link.exit().transition()
-        .duration(duration)
-        .attr("d", function(d) {
-            var o = {x: source.x, y: source.y};
-            return diagonal({source: o, target: o});
-        })
-        .remove();
-
-    // Stash the old positions for transition.
-    nodes.forEach(function(d) {
-        d.x0 = d.x;
-        d.y0 = d.y;
-    });
-}
-
-// Toggle children.
-function toggle(d) {
-    if (d.children) {
-        d._children = d.children;
-        d.children = null;
-    } else {
-        d.children = d._children;
-        d._children = null;
-    }
-}
-
diff --git a/src/test/java/StatementTextTest.java b/src/test/java/StatementTextTest.java
new file mode 100644
index 0000000..dce61a3
--- /dev/null
+++ b/src/test/java/StatementTextTest.java
@@ -0,0 +1,14 @@
+import org.junit.Assert;
+import org.junit.Test;
+import perfix.instrument.StatementText;
+
+public class StatementTextTest {
+
+    @Test
+    public void testReplace(){
+        StatementText b = new StatementText("select ? from ?");
+        b.set(1, "alpha");
+        b.set(2, "beta");
+        Assert.assertEquals("select alpha from beta",b.toString());
+    }
+}
diff --git a/src/test/java/TestMethod.java b/src/test/java/TestMethod.java
deleted file mode 100644
index cd63de8..0000000
--- a/src/test/java/TestMethod.java
+++ /dev/null
@@ -1,16 +0,0 @@
-import org.junit.Test;
-import perfix.MethodInvocation;
-import perfix.Registry;
-
-public class TestMethod {
-    @Test
-    public void testAddMethodToRegistry() {
-        MethodInvocation method = MethodInvocation.start("somename");
-        method.stop();
-        MethodInvocation method2 = MethodInvocation.start("somename");
-        method2.stop();
-
-        Registry.report(System.out);
-    }
-
-}
diff --git a/src/testapp/java/testperfix/cmdline/App.java b/src/testapp/java/testperfix/cmdline/App.java
index d904906..b151f3c 100644
--- a/src/testapp/java/testperfix/cmdline/App.java
+++ b/src/testapp/java/testperfix/cmdline/App.java
@@ -42,8 +42,11 @@ public class App {
     private static void someJdbcPreparedStatementMethod() {
         try {
             Connection connection = DriverManager.getConnection("jdbc:h2:mem:default", "sa", "");
-
-            PreparedStatement preparedStatement = connection.prepareStatement("select CURRENT_DATE() -- prepared statement");
+            Statement statement = connection.createStatement();
+            statement.execute("create table t (v varchar(2))");
+            statement.close();
+            PreparedStatement preparedStatement = connection.prepareStatement("select * from t where v=? -- prepared statement");
+            preparedStatement.setDate(1, new Date(new java.util.Date().getTime()));
             preparedStatement.executeQuery();
             connection.close();
         } catch (SQLException e) {