/**
* Writes a property value for a resource, if the value was changed.
*
* <p>
*
* @param res the resource to write the property to
* @param propName the name of the property definition
* @param propValue the new value of the property
* @param currentProperty the old property object
* @throws CmsException if something goes wrong
*/
protected void writeProperty(
CmsResource res, String propName, String propValue, CmsProperty currentProperty)
throws CmsException {
// check if current property is not the null property
if (currentProperty.isNullProperty()) {
// create new property object
currentProperty = new CmsProperty();
currentProperty.setName(propName);
}
if (CmsStringUtil.isEmptyOrWhitespaceOnly(propValue)) {
// parameter is empty, determine the value to delete
boolean writeProperty = false;
if (currentProperty.getStructureValue() != null) {
currentProperty.setStructureValue(CmsProperty.DELETE_VALUE);
currentProperty.setResourceValue(null);
writeProperty = true;
} else if (currentProperty.getResourceValue() != null) {
currentProperty.setResourceValue(CmsProperty.DELETE_VALUE);
currentProperty.setStructureValue(null);
writeProperty = true;
}
if (writeProperty) {
// write the updated property object
getCms().writePropertyObject(getCms().getSitePath(res), currentProperty);
}
} else {
// parameter is not empty, check if the value has changed
if (!propValue.equals(currentProperty.getValue())) {
if ((currentProperty.getStructureValue() == null)
&& (currentProperty.getResourceValue() == null)) {
// new property, determine setting from OpenCms workplace configuration
if (OpenCms.getWorkplaceManager().isDefaultPropertiesOnStructure()) {
currentProperty.setStructureValue(propValue);
currentProperty.setResourceValue(null);
} else {
currentProperty.setResourceValue(propValue);
currentProperty.setStructureValue(null);
}
} else if (currentProperty.getStructureValue() != null) {
// structure value has to be updated
currentProperty.setStructureValue(propValue);
currentProperty.setResourceValue(null);
} else {
// resource value has to be updated
currentProperty.setResourceValue(propValue);
currentProperty.setStructureValue(null);
}
// write the updated property object
getCms().writePropertyObject(getCms().getSitePath(res), currentProperty);
}
}
}
