private void processStreamElement(OMElement streamElement, BAMServerProfile bamServerProfile) {
OMAttribute nameAttr = streamElement.getAttribute(new QName("name"));
OMAttribute versionAttr = streamElement.getAttribute(new QName("version"));
OMAttribute nickNameAttr = streamElement.getAttribute(new QName("nickName"));
OMAttribute descriptionAttr = streamElement.getAttribute(new QName("description"));
if (nameAttr != null
&& nickNameAttr != null
&& descriptionAttr != null
&& !nameAttr.getAttributeValue().equals("")
&& !nickNameAttr.getAttributeValue().equals("")
&& !descriptionAttr.getAttributeValue().equals("")) {
BAMStreamConfiguration streamConfiguration =
new BAMStreamConfiguration(
nameAttr.getAttributeValue(),
nickNameAttr.getAttributeValue(),
descriptionAttr.getAttributeValue(),
versionAttr.getAttributeValue());
OMElement dataElement =
streamElement.getFirstChildWithName(
new QName(BPELConstants.BAM_SERVER_PROFILE_NS, "Data"));
if (dataElement == null) {
String errMsg = "Data element is not available for BAM server profile: " + profileLocation;
handleError(errMsg);
}
Iterator itr =
dataElement.getChildrenWithName(new QName(BPELConstants.BAM_SERVER_PROFILE_NS, "Key"));
OMElement keyElement;
while (itr.hasNext()) {
keyElement = (OMElement) itr.next();
processKeyElement(keyElement, streamConfiguration);
}
bamServerProfile.addBAMStreamConfiguration(
streamConfiguration.getName(), streamConfiguration);
} else {
String errMsg =
"One or many of the attributes of Stream element is not available "
+ "for BAM server profile: "
+ profileLocation;
handleError(errMsg);
}
}
private void processKeyElement(OMElement keyElement, BAMStreamConfiguration streamConfiguration) {
BAMKey bamKey;
String name;
BAMKey.BAMKeyType type;
String variable;
String expression;
String part = null;
String query = null;
OMAttribute nameAttribute = keyElement.getAttribute(new QName("name"));
if (nameAttribute == null || "".equals(nameAttribute.getAttributeValue())) {
String errMsg =
"name attribute of Key element cannot be null for BAM server "
+ "profile: "
+ profileLocation;
handleError(errMsg);
}
name = nameAttribute.getAttributeValue();
OMAttribute typeAttribute = keyElement.getAttribute(new QName("type"));
if (typeAttribute == null || "".equals(typeAttribute.getAttributeValue())) {
type = BAMKey.BAMKeyType.PAYLOAD;
log.debug(
"type attribute of Key element: "
+ name
+ " is not available. "
+ "Type is default to payload");
}
type = BAMKey.BAMKeyType.valueOf(typeAttribute.getAttributeType());
OMElement fromElement =
keyElement.getFirstChildWithName(new QName(BPELConstants.BAM_SERVER_PROFILE_NS, "From"));
if (fromElement == null) {
String errMsg =
"From element not found for Key element: "
+ name
+ " for BAM server "
+ "profile: "
+ profileLocation;
handleError(errMsg);
}
OMAttribute variableAttribute = fromElement.getAttribute(new QName("variable"));
if (variableAttribute != null && !"".equals(variableAttribute.getAttributeValue())) {
variable = variableAttribute.getAttributeValue();
OMAttribute partAttribute = fromElement.getAttribute(new QName("part"));
if (partAttribute != null) {
part = partAttribute.getAttributeValue();
}
OMElement queryElement =
fromElement.getFirstChildWithName(
new QName(BPELConstants.BAM_SERVER_PROFILE_NS, "Query"));
if (queryElement == null || "".equals(queryElement.getText())) {
query = queryElement.getText();
}
bamKey = new BAMKey(name, variable, part, query, type);
} else {
if (fromElement.getText() == null || "".equals(fromElement.getText())) {
String errMsg =
"Variable name or XPath expression not found for From of Key: "
+ name
+ " for BAM server profile: "
+ profileLocation;
handleError(errMsg);
}
expression = fromElement.getText().trim();
bamKey = new BAMKey(name, type);
bamKey.setExpression(expression);
}
switch (bamKey.getType()) {
case PAYLOAD:
streamConfiguration.addPayloadBAMKey(bamKey);
break;
case CORRELATION:
streamConfiguration.addCorrelationBAMKey(bamKey);
break;
case META:
streamConfiguration.addMetaBAMKey(bamKey);
break;
default:
String errMsg =
"Unknown BAM key type: "
+ type
+ " with BAM key name: "
+ bamKey.getName()
+ " in stream: "
+ streamConfiguration.getName();
handleError(errMsg);
}
}