private void addAttribute(
String attrName,
String attrStringValue,
IEventType eventType,
Map<String, Object> attrMap,
DateFormat dateFormatter)
throws AdapterException {
TypeAttribute eventTypeAttribute = eventType.getTypeAttributeSet().getAttribute(attrName);
AttributeTypesEnum attrType = eventTypeAttribute.getTypeEnum();
if (attrType.equals(AttributeTypesEnum.STRING) || eventTypeAttribute.getDimension() > 0) {
attrStringValue = "'" + attrStringValue + "'";
}
Object attrValueObject;
try {
attrValueObject =
TypeAttribute.parseConstantValue(
attrStringValue,
attrName,
eventType,
dateFormatter,
WebFacadesManager.getInstance().getEepFacade());
attrMap.put(attrName, attrValueObject);
} catch (Exception e) {
String msg =
"Could not convert XML input attribute "
+ attrName
+ " to event attribute "
+ e
+ ", reason: "
+ e.getMessage();
logger.severe(msg);
// throw new ResponseException(msg);
}
}
@Override
public IEventInstance readFrom(
Class<IEventInstance> type,
Type generic,
Annotation[] annotation,
MediaType media,
MultivaluedMap<String, String> map,
InputStream eventStream)
throws IOException, WebApplicationException {
logger.info("started plain text message body reader");
// the InputStream event contains event in plain text format
// we should parse the event text, create IEventInstance and return it -
// the resource's put/post function will be invoked
// String eventString = getEventString(eventStream);
String eventString = "Name=StockBuy;id=111;amount=100;price=5000";
logger.info("extracted event string: " + eventString);
// the eventString consists of name=value pairs separated by delimiter
int nameAttrIndex = eventString.indexOf(EventHeader.NAME_ATTRIBUTE);
String nameSubstring = eventString.substring(nameAttrIndex);
int delimiterIndex = nameSubstring.indexOf(DELIMITER);
int tagDataSeparatorIndex = nameSubstring.indexOf(TAG_DATA_SEPARATOR);
String nameValue = nameSubstring.substring(tagDataSeparatorIndex + 1, delimiterIndex);
IEventType eventType =
WebMetadataFacade.getInstance().getEventMetadataFacade().getEventType(nameValue);
// search for all pairs of tag-data by using delimiter
Map<String, Object> attrValues = new HashMap<String, Object>();
String[] tagValuePairs = eventString.split(DELIMITER);
for (String tagValue : tagValuePairs) {
// separate the tag from the value using the tagDataSeparator
String[] separatedPair = tagValue.split(TAG_DATA_SEPARATOR);
String attrName = separatedPair[0]; // the tag is always the first in the pair
// some attributes might not have value specified at all
if (separatedPair.length < 2) {
attrValues.put(attrName, null);
continue;
}
String attrStringValue = separatedPair[1];
if (attrStringValue.equals("null")) {
// the attribute has a value of null
attrValues.put(attrName, null);
continue;
}
TypeAttribute eventTypeAttribute = eventType.getTypeAttributeSet().getAttribute(attrName);
AttributeTypesEnum attrType = eventTypeAttribute.getTypeEnum();
if (attrType.equals(AttributeTypesEnum.STRING) || eventTypeAttribute.getDimension() > 0) {
attrStringValue = "'" + attrStringValue + "'";
}
Object attrValueObject;
try {
attrValueObject =
TypeAttribute.parseConstantValue(
attrStringValue,
attrName,
eventType,
null,
WebFacadesManager.getInstance().getEepFacade());
attrValues.put(attrName, attrValueObject);
} catch (Exception e) {
String msg =
"Could not parse the event string" + eventString + ", reason: " + e.getMessage();
logger.severe(msg);
throw new ResponseException(msg);
}
}
IEventInstance event = new EventInstance(eventType, attrValues);
event.setDetectionTime(System.currentTimeMillis());
logger.info("finished message body reader");
return event;
}