/**
* Helper method to set attributes on a graphic. Only sets the attributes on the newGraphic
* variable if the value has changed. Returns true if the value has changed and has been set on
* the graphic.
*
* @return boolean hasValueChanged
*/
public static boolean setAttribute(
Map<String, Object> attrs,
Graphic oldGraphic,
Field field,
String value,
DateFormat formatter) {
boolean hasValueChanged = false;
// if its a string, and it has changed from the oldGraphic value
if (FieldType.determineFieldType(field) == FieldType.STRING) {
if (!value.equals(oldGraphic.getAttributeValue(field.getName()))) {
// set the value as it is
attrs.put(field.getName(), value);
hasValueChanged = true;
}
} else if (FieldType.determineFieldType(field) == FieldType.NUMBER) {
// if its an empty string, its a 0 number value (nulls not
// supported), check this is a
// change before making it a 0
if (value.equals("") && oldGraphic.getAttributeValue(field.getName()) != Integer.valueOf(0)) {
// set a null value on the new graphic
attrs.put(field.getName(), new Integer(0));
hasValueChanged = true;
} else {
// parse as an int and check this is a change
int intValue = Integer.parseInt(value);
if (intValue
!= Integer.parseInt(oldGraphic.getAttributeValue(field.getName()).toString())) {
attrs.put(field.getName(), Integer.valueOf(intValue));
hasValueChanged = true;
}
}
} else if (FieldType.determineFieldType(field) == FieldType.DECIMAL) {
// if its an empty string, its a 0 double value (nulls not
// supported), check this is a
// change before making it a 0
if ((value.equals("")
&& oldGraphic.getAttributeValue(field.getName()) != Double.valueOf(0))) {
// set a null value on the new graphic
attrs.put(field.getName(), new Double(0));
hasValueChanged = true;
} else {
// parse as an double and check this is a change
double dValue = Double.parseDouble(value);
if (dValue
!= Double.parseDouble(oldGraphic.getAttributeValue(field.getName()).toString())) {
attrs.put(field.getName(), Double.valueOf(dValue));
hasValueChanged = true;
}
}
} else if (FieldType.determineFieldType(field) == FieldType.DATE) {
// if its a date, get the milliseconds value
Calendar c = Calendar.getInstance();
long dateInMillis = 0;
try {
// parse to a double and check this is a change
c.setTime(formatter.parse(value));
dateInMillis = c.getTimeInMillis();
if (dateInMillis
!= Long.parseLong(oldGraphic.getAttributeValue(field.getName()).toString())) {
attrs.put(field.getName(), Long.valueOf(dateInMillis));
hasValueChanged = true;
}
} catch (ParseException e) {
// do nothing
}
}
// }
return hasValueChanged;
}
