[TAPESTRY-617] get static field fail with use table component, bug report like bug tapestry-408

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.5
• Fix Version/s: 3.0.5
• Component/s: Contrib
• Environment: weblogic+windows2000+jdk1.4.2
• Assignee: Brian K. Wallace
• Reporter: samwen
• Created: 01/Sep/05 15:37
• Updated: 25/Apr/06 13:08
• Resolved: 25/Apr/06 13:08

Description

bug report like bug tapestry-408
in my table component define
columns="id.bigClientId:title1:[0].id.bigClientId,
contractDate:mydate:@[e-mail]([0].contractDate)"
it can't access static field !!
weblogic 8.1.3+windows 2000+eclipse
/* when weblogic classpath include ognl.jar

• mywebapp
• +web-inf
• +lib ognl.jar;tapestry-3.x.x.jar; tapestry-contrib-3.x.x.jar;

• */

//org.apache.tapestry.contrib.table.model.ognl.OgnlTableColumnEvaluator.java

public Object getColumnValue(ITableColumn objColumn, Object objRow)
{
// If no expression is given, then this is dummy column. Return something.
if (m_strExpression == null || m_strExpression.equals(""))
return "";

if (m_objParsedExpression == null)
{
synchronized (this)

{ if (m_objParsedExpression == null) m_objParsedExpression = OgnlUtils.getParsedExpression(m_strExpression); }
}

try
{ Object objValue = Ognl.getValue(m_objParsedExpression, objRow); return objValue; }
catch (OgnlException e)
{ LOG.error( "Cannot use column expression '" + m_strExpression + "' in row", e); return ""; }
}


patch:
// org.apache.tapestry.contrib.table.model.ognl.OgnlTableColumnEvaluator.java
/**
* @see org.apache.tapestry.contrib.table.model.simple.ITableColumnEvaluator#getColumnValue(ITableColumn, Object)
*/
public Object getColumnValue(ITableColumn objColumn, Object objRow)
{
// If no expression is given, then this is dummy column. Return something.
if (m_strExpression == null || m_strExpression.equals(""))
return "";

if (m_objParsedExpression == null)
{
synchronized (this)
{ if (m_objParsedExpression == null) m_objParsedExpression = OgnlUtils.getParsedExpression(m_strExpression); }

}

try
{

ClassResolver resolver= new ClassResolver(){

public Class classForName(String className, Map context) throws ClassNotFoundException

{ ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader(); return Class.forName(className, true, contextClassLoader); }

};
Map context = Ognl.createDefaultContext(objRow, resolver);

Object objValue= Ognl.getValue(m_objParsedExpression, context, objRow);

//Object objValue = Ognl.getValue(m_objParsedExpression, objRow);
return objValue;
}
catch (OgnlException e)

{ System.out.println("ognl exception!!"); e.printStackTrace(); LOG.error( "Cannot use column expression '" + m_strExpression + "' in row", e); return ""; }

catch(RuntimeException ex)

{ System.out.println("throw Exception OgnlTableColumnEvaluator!!"); ex.printStackTrace(); throw ex; }

catch(Exception ex)

{ ex.printStackTrace(); throw new RuntimeException(ex); }

}

weblogic 8.1.3+windows 2000+eclipse
/* when weblogic classpath include ognl.jar;tapestry-3.x.x.jar;tapestry-contrib-patch.jar

• mywebapp
• +web-inf
• +lib ognl.jar;tapestry-3.x.x.jar; tapestry-contrib-3.x.x.jar;

• */

and run Ok!