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package com.sun.enterprise.config.serverbeans.validation;
import java.util.Map;
import java.util.HashMap;
import com.sun.enterprise.config.ConfigBean;
import com.sun.enterprise.config.serverbeans.ElementProperty;
/**
* helper class with convenience util methods
* for property changes validation
*/
/* Class for attribute type Integer */
public abstract class PropertyHelper {
static final String ELEMENT_PROPERTY = "ElementProperty";
static final String PROP_NAME_ATTRNAME = "name";
static final String PROP_VALUE_ATTRNAME = "value";
/***********************************************************
*
* this method can be called from a custom validator
* during validatePropertyChanges
************************************************************/
static public Map getPropertiesMap(ConfigBean parent) {
HashMap map = new HashMap();
if(parent!=null)
{
ElementProperty[] props =
(ElementProperty[])parent.getValues(ELEMENT_PROPERTY);
if(props!=null)
{
for(int i=0; i<props.length; i++)
{
map.put(props[i].getName(), props[i].getValue());
}
}
}
return map;
}
/********************************************************
*
* returns true is named property will be changed as result of change event
*
********************************************************/
static public boolean isPropertyChanged(ValidationContext propValCtx, String name) {
ElementProperty prop = (ElementProperty)propValCtx.getTargetBean();
if(!prop.getName().equals(name))
{
//check if name of property changing to checked one
if(!propValCtx.isUPDATE() ||
!PROP_NAME_ATTRNAME.equals(propValCtx.name) ||
!name.equals(propValCtx.value))
{
//not related changes
return false;
}
}
// first get current properties as map
Map map = getPropertiesMap(propValCtx.getParentBean());
// save "old" value for tested property
String oldValue = (String)map.get(name);
// "apply" change over existing props
addChangesToPropertiesMap(propValCtx, map);
// get "new" value for tested property
String newValue = (String)map.get(name);
// now - compare
if((oldValue==null && newValue==null) ||
(oldValue!=null && oldValue.equals(newValue)) )
{
//we are trying to set prop to already existing value
return false;
}
return true;
}
/********************************************************
* returns map of element properties if changes would be accepted
*
*********************************************************/
static public Map getFuturePropertiesMap(ValidationContext propValCtx) {
Map map = getPropertiesMap(propValCtx.getParentBean());
return addChangesToPropertiesMap(propValCtx, map);
}
/********************************************************
*********************************************************/
static private Map addChangesToPropertiesMap(ValidationContext propValCtx, Map map) {
if(propValCtx.isADD() || propValCtx.isSET())
{
ElementProperty prop = (ElementProperty)propValCtx.getTargetBean();
map.put(prop.getName(), prop.getValue());
}
else if(propValCtx.isUPDATE())
{
ElementProperty prop = (ElementProperty)propValCtx.getTargetBean();
if(PROP_NAME_ATTRNAME.equals(propValCtx.name))
{
// when name of property is changing
map.remove(prop.getName());
map.put(propValCtx.value, prop.getValue());
}
else
{
// when value of property is changing
map.put(prop.getName(), propValCtx.value);
}
}
return map;
}
}