ajax parameters modification hash based detection

common/src/main/java/com/genexus/GXBaseCollection.java

@@ -23,6 +23,7 @@ public class GXBaseCollection<T extends GXXMLSerializable> extends GXSimpleColle
 	private static final long serialVersionUID = 1L;
 	public GXBaseCollection()
 	{
+		super();
 	}
 
 	public GXBaseCollection(Class<T> elementsType, String elementsName, String containedXmlNamespace)
@@ -42,7 +43,7 @@ public GXBaseCollection(Class<T> elementsType, String elementsName, String conta
 
 	public GXBaseCollection(Class<T> elementsType, String elementsName, String containedXmlNamespace, Vector<T> data, int remoteHandle)
 	{
-
+		super();
 		this.elementsType = elementsType;
 		this.elementsName = elementsName;
 		xmlElementsName = elementsName;

common/src/main/java/com/genexus/GXBaseList.java

@@ -0,0 +1,82 @@
+package com.genexus;
+
+import java.io.Serializable;
+import java.util.Vector;
+import com.genexus.internet.IGxJSONAble;
+import com.genexus.internet.IGxJSONSerializable;
+
+public abstract class GXBaseList<T> extends Vector<T> implements Serializable, IGxJSONAble, IGxJSONSerializable, IGXAssigned
+{
+	private boolean IsAssigned;
+
+	public GXBaseList()
+	{
+		IsAssigned = true;
+	}
+
+	public boolean getIsAssigned()
+	{
+		return this.IsAssigned;
+	}
+	public void setIsAssigned(boolean bAssigned)
+	{
+		this.IsAssigned = bAssigned;
+	}
+	public void removeAllItems()
+	{
+		super.clear();
+		IsAssigned = true;
+	}
+	public byte removeItem(int index)
+	{
+		T item = null;
+		if(index > 0 && index <= size())
+		{
+			item = super.remove((int)index - 1);//Vector.remove(int)
+			IsAssigned = true;
+			return (byte)1;
+		}
+		return (byte)0;
+	}
+	public byte removeElement(double index)
+	{
+		if(index > 0 && index <= size())
+		{
+			super.remove((int)index - 1);//Vector.remove(int)
+			IsAssigned = true;
+			return (byte)1;
+		}
+		else
+		{
+			return (byte)0;
+		}
+	}
+
+	@SuppressWarnings("unchecked")
+	public void addObject(Object obj){
+		super.add((T)obj);
+		IsAssigned = true;
+	}
+	@SuppressWarnings("unchecked")
+	public void add(Object item, int index)
+	{
+		if(index < 1 || index > size())
+		{
+			add((T)item); //this.add, GXBCLevelCollection.add for example
+		}
+		else
+		{
+			super.add(index - 1, (T)item); //Vector insert element
+			IsAssigned = true;
+		}
+	}
+	@SuppressWarnings("unchecked")
+	public void addBase( Object item)
+	{
+		super.add((T)item);
+		IsAssigned = true;
+	}
+}
+
+
+

common/src/main/java/com/genexus/GXSimpleCollection.java

@@ -37,7 +37,7 @@
 import org.simpleframework.xml.*;
 
 @Root(name="Collection")
-public class GXSimpleCollection<T> extends Vector<T> implements Serializable, IGxJSONAble, IGxJSONSerializable {
+public class GXSimpleCollection<T> extends GXBaseList<T> {
 
 	@ElementList(entry="item",inline=true)
     GXSimpleCollection<T> list;
@@ -50,6 +50,7 @@ public class GXSimpleCollection<T> extends Vector<T> implements Serializable, IG
 
 	public GXSimpleCollection()
 	{
+		super();
 	}
 
 	public GXSimpleCollection(Class<T> elementsType, String elementsName, String containedXmlNamespace)
@@ -69,6 +70,7 @@ public GXSimpleCollection(Class<T> elementsType, String elementsName, String con
 
 	public GXSimpleCollection(Class<T> elementsType, String elementsName, String containedXmlNamespace, Vector data, int remoteHandle)
 	{
+		super();
 		this.elementsType = elementsType;
 		this.elementsName = elementsName;
 		xmlElementsName = elementsName;
@@ -432,11 +434,6 @@ public Object currentItem()
 
 	//-- Este add se usa cuando se quiere agregar a las lineas de un BC sin usar la logica de manteniomiento del estado
 	// de la linea
-	@SuppressWarnings("unchecked")
-	public void addBase( Object item)
-	{
-		super.add((T)item);
-	}
 	protected String getMethodName(boolean isGet, String method)
 	{
 		String getName = elementsType.getName();
@@ -456,19 +453,6 @@ public void addInternal(Object item)
 		super.add((T)item);
 	}
 
-	@SuppressWarnings("unchecked")
-	public void add(Object item, int index)
-	{
-		if(index < 1 || index > size())
-		{
-			add((T)item); //this.add, GXBCLevelCollection.add for example
-		}
-		else
-		{
-			super.add(index - 1, (T)item); //Vector insert element
-		}
-	}
-
 	public void add(byte item)
 	{
 		addInternal(new Byte(item));
@@ -520,11 +504,6 @@ public void addIntegralConstant(double item)
 		}
 	}
 
-	@SuppressWarnings("unchecked")
-	public void addObject(Object obj){
-		super.add((T)obj);
-	}
-
 	public void add(long item)
 	{
 		addInternal(new Long(item));
@@ -602,11 +581,6 @@ public void add(double item, int index)
 		addIntegralConstant(item, index);
 	}
 
-	public void removeAllItems()
-	{
-		super.clear();
-	}
-
 	public void clearCollection()
 	{
 		removeAllItems();
@@ -694,30 +668,6 @@ public boolean remove(char item)
 		return remove(new Character(item));
 	}
 
-	public byte removeItem(int index)
-	{
-		T item = null;
-		if(index > 0 && index <= size())
-		{
-			item = super.remove((int)index - 1);//Vector.remove(int)
-			return (byte)1;
-		}
-		return (byte)0;
-	}
-
-	public byte removeElement(double index)
-	{
-		if(index > 0 && index <= size())
-		{
-			super.remove((int)index - 1);//Vector.remove(int)
-			return (byte)1;
-		}
-		else
-		{
-			return (byte)0;
-		}
-	}
-
 	/** Ordena la Collection de acuerdo a un proc pasado por parametro
 	 * El proc tiene que recibir como parms
 	 *	parm(IN: &SDT1, IN: &SDT2, OUT: INT)

common/src/main/java/com/genexus/IGXAssigned.java

@@ -0,0 +1,6 @@
+package com.genexus;
+public interface IGXAssigned
+{
+	boolean getIsAssigned();
+	void setIsAssigned(boolean bAssigned);
+}

java/src/main/java/com/genexus/GxUserType.java

@@ -0,0 +1,31 @@
+package com.genexus;
+
+import com.genexus.xml.GXXMLSerializable;
+
+public abstract class GxUserType extends GXXMLSerializable implements Cloneable, java.io.Serializable, IGXAssigned
+{
+
+	public GxUserType(ModelContext context, String type)
+	{
+		super(-1, context, type);
+	}
+
+	public GxUserType(int remoteHandle, ModelContext context, String type)
+	{
+		super( remoteHandle, context, type);
+	}
+
+	boolean bIsAssigned = true;
+
+	public abstract String getJsonMap( String value );
+
+	@Override
+	public boolean getIsAssigned() {
+		return bIsAssigned;
+	}
+
+	@Override
+	public void setIsAssigned(boolean bAssigned) {
+		bIsAssigned = bAssigned;
+	}
+}

java/src/main/java/com/genexus/internet/HttpAjaxContext.java

@@ -7,8 +7,11 @@
 import java.util.Hashtable;
 import java.util.Stack;
 
+import com.genexus.IGXAssigned;
 import com.genexus.diagnostics.core.ILogger;
 import com.genexus.diagnostics.core.LogManager;
+import com.genexus.webpanels.DynAjaxEventContext;
+import com.genexus.webpanels.GXWebPanel;
 import com.genexus.webpanels.GXWebRow;
 
 import json.org.json.IJsonFormattable;
@@ -44,8 +47,13 @@ public abstract class HttpAjaxContext
 		public void setAjaxOnSessionTimeout( String ajaxOnSessionTimeout){ this._ajaxOnSessionTimeout = ajaxOnSessionTimeout;}
 		public String ajaxOnSessionTimeout(){ return _ajaxOnSessionTimeout;}
 
+		DynAjaxEventContext dynAjaxEventContext = new DynAjaxEventContext();
 
-	public abstract boolean isMultipartContent();
+		public DynAjaxEventContext getDynAjaxEventContext() {
+			return dynAjaxEventContext;
+		}
+
+		public abstract boolean isMultipartContent();
 		public abstract void ajax_rsp_assign_prop_as_hidden(String Control, String Property, String Value);
 
 		public abstract boolean isSpaRequest();
@@ -319,16 +327,28 @@ public void ajax_rsp_assign_attri( String CmpContext, boolean IsMasterPage, Stri
             }
         }
 
-        public void ajax_rsp_assign_sdt_attri( String CmpContext, boolean IsMasterPage, String AttName, Object SdtObj)
+	private boolean isUndefinedOutParam(String key, Object SdtObj) {
+		if (!dynAjaxEventContext.isInputParm(key))
+		{
+			if (SdtObj instanceof IGXAssigned)
+			{
+				return !((IGXAssigned)SdtObj).getIsAssigned();
+			}
+		}
+		return false;
+	}
+
+
+	public void ajax_rsp_assign_sdt_attri( String CmpContext, boolean IsMasterPage, String AttName, Object SdtObj)
         {
             if (isJsOutputEnabled)
             {
                 if (!isSpaRequest() || (isSpaRequest() && (CmpContext == null || CmpContext.trim().length() == 0)))
                 {
                   try {
                       JSONObject obj = getGxObject(AttValues, CmpContext, IsMasterPage);
-                      if (obj != null)
-                      {
+					  if (obj != null && (dynAjaxEventContext.isParmModified(AttName, SdtObj) || !isUndefinedOutParam( AttName, SdtObj)))
+					  {
                         if (SdtObj instanceof IGxJSONAble)
                             obj.put(AttName, ((IGxJSONAble)SdtObj).GetJSONObject());
                         else

java/src/main/java/com/genexus/webpanels/DynAjaxEventContext.java

@@ -0,0 +1,48 @@
+package com.genexus.webpanels;
+
+import com.genexus.GXutil;
+import com.genexus.internet.IGxJSONSerializable;
+import json.org.json.JSONArray;
+
+import java.util.HashSet;
+import java.util.Hashtable;
+
+public class DynAjaxEventContext implements GXWebPanel.IDynAjaxEventContext {
+	JSONArray inParmsMetadata;
+	HashSet<String> inParmsMetadataHash = new HashSet<String>();
+	JSONArray outParmsMetadata;
+	HashSet<String> outParmsMetadataHash = new HashSet<String>();
+	private Hashtable<String, String> inParmsHashValue = new Hashtable<String, String>();
+
+	public void ClearParmsMetadata() {
+		inParmsMetadata = new JSONArray();
+		inParmsMetadataHash = new HashSet<String>();
+		outParmsMetadata = new JSONArray();
+		outParmsMetadataHash = new HashSet<String>();
+	}
+
+	public boolean isInputParm(String key) {
+		return inParmsMetadataHash.contains(key);
+	}
+
+	public void Clear() {
+		inParmsHashValue.clear();
+	}
+
+	public void SetParmHash(String fieldName, Object value) {
+		IGxJSONSerializable jsonValue = (value instanceof IGxJSONSerializable) ? (IGxJSONSerializable) value : null;
+		if (jsonValue != null) {
+			inParmsHashValue.put(fieldName, GXutil.getHash(jsonValue.toJSonString()));
+		}
+	}
+
+	public boolean isParmModified(String fieldName, Object value) {
+		IGxJSONSerializable jsonValue = (value instanceof IGxJSONSerializable) ? (IGxJSONSerializable) value : null;
+		if (value != null) {
+			if (!inParmsHashValue.containsKey(fieldName))
+				return true;
+			return !GXutil.getHash(jsonValue.toJSonString()).equals(inParmsHashValue.get(fieldName));
+		}
+		return true;
+	}
+}