FR [ 2563590 ] Introduce GridTab to Bean wrapper

https://sourceforge.net/tracker/?func=detail&atid=879335&aid=2563590&group_id=176962

base/src/org/adempiere/model/GridTabWrapper.java

@@ -0,0 +1,114 @@
+/******************************************************************************
+ * Product: Adempiere ERP & CRM Smart Business Solution                       *
+ * Copyright (C) 2008 SC ARHIPAC SERVICE SRL. All Rights Reserved.            *
+ * This program is free software; you can redistribute it and/or modify it    *
+ * under the terms version 2 of the GNU General Public License as published   *
+ * by the Free Software Foundation. This program is distributed in the hope   *
+ * that it will be useful, but WITHOUT ANY WARRANTY; without even the implied *
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.           *
+ * See the GNU General Public License for more details.                       *
+ * You should have received a copy of the GNU General Public License along    *
+ * with this program; if not, write to the Free Software Foundation, Inc.,    *
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.                     *
+ *****************************************************************************/
+package org.adempiere.model;
+
+import java.lang.reflect.InvocationHandler;
+import java.lang.reflect.Method;
+import java.lang.reflect.Proxy;
+import java.math.BigDecimal;
+
+import org.compiere.model.GridField;
+import org.compiere.model.GridTab;
+import org.compiere.model.PO;
+
+/**
+ * Wrap GridTab to ADempiere Bean Interface (i.e. generated interfaces).
+ * Usage example:
+ * <pre>
+ * I_A_Asset_Disposed bean = GridTabWrapper.create(mTab, I_A_Asset_Disposed.class); 
+ * Timestamp dateDoc = (Timestamp)value; 
+ * bean.setDateAcct(dateDoc); 
+ * bean.setA_Disposed_Date(dateDoc); 
+ * </pre>
+ * @author Teo Sarca, www.arhipac.ro
+ */
+public class GridTabWrapper implements InvocationHandler
+{
+	@SuppressWarnings("unchecked")
+	public static <T> T create(GridTab gridTab, Class<T> cl)
+	{
+		return (T)Proxy.newProxyInstance(cl.getClassLoader(),
+											new Class<?>[]{cl},
+											new GridTabWrapper(gridTab));
+	}
+	
+	private GridTab m_gridTab = null;
+	
+	private GridTabWrapper()
+	{
+	}
+	
+	private GridTabWrapper(GridTab gridTab)
+	{
+		this.m_gridTab = gridTab;
+	}
+	
+	@Override
+	public Object invoke(Object proxy, Method method, Object[] args)
+	throws Throwable
+	{
+		String methodName = method.getName();
+		if (methodName.startsWith("set") && args.length == 1)
+		{
+			String propertyName = methodName.substring(3);
+			m_gridTab.setValue(propertyName, args[0]);
+			// TODO: handle GridTab.setValue returning error  
+			return null;
+		}
+		else if (methodName.startsWith("get") && (args == null || args.length == 0))
+		{
+			String propertyName = methodName.substring(3);
+			Object value = m_gridTab.getValue(propertyName);
+			if (value != null)
+			{
+				return value;
+			}
+			//
+			if (method.getReturnType() == int.class)
+			{
+				value = Integer.valueOf(0);
+			}
+			else if (method.getReturnType() == BigDecimal.class)
+			{
+				value = BigDecimal.ZERO;
+			}
+			else if (PO.class.isAssignableFrom(method.getReturnType()))
+			{
+				throw new IllegalArgumentException("Method not supported - "+methodName);
+			}
+			return value;
+		}
+		else if (methodName.startsWith("is") && (args == null || args.length == 0))
+		{
+			String propertyName = methodName.substring(2);
+			GridField field = m_gridTab.getField(propertyName);
+			if (field != null)
+			{
+				return field.getValue();
+			}
+			//
+			field = m_gridTab.getField("Is"+propertyName);
+			if (field != null)
+			{
+				return field.getValue();
+			}
+			//
+			throw new IllegalArgumentException("Method not supported - "+methodName);
+		}
+		else
+		{
+			return method.invoke(m_gridTab, args);
+		}
+	}
+}