private boolean accept(Object obj) {
if (obj == null) {
logger.warn("Applying JXPathFilter to null object.");
return false;
}
if (pattern == null) {
logger.warn("Expression for JXPathFilter is not set.");
return false;
}
if (expectedValue == null) {
// Handle the special case where the expected value really is null.
if (pattern.endsWith("= null") || pattern.endsWith("=null")) {
expectedValue = "null";
pattern = pattern.substring(0, pattern.lastIndexOf("="));
} else {
if (logger.isInfoEnabled()) {
logger.info("Expected value for JXPathFilter is not set, using 'true' by default");
}
expectedValue = Boolean.TRUE.toString();
}
}
Object xpathResult = null;
boolean accept = false;
Document dom4jDoc;
try {
dom4jDoc = XMLUtils.toDocument(obj, muleContext);
} catch (Exception e) {
logger.warn(
"JxPath filter rejected message because of an error while parsing XML: " + e.getMessage(),
e);
return false;
}
// Payload is XML
if (dom4jDoc != null) {
if (namespaces == null) {
// no namespace defined, let's perform a direct evaluation
xpathResult = dom4jDoc.valueOf(pattern);
} else {
// create an xpath expression with namespaces and evaluate it
XPath xpath = DocumentHelper.createXPath(pattern);
xpath.setNamespaceURIs(namespaces);
xpathResult = xpath.valueOf(dom4jDoc);
}
}
// Payload is a Java object
else {
if (logger.isDebugEnabled()) {
logger.debug("Passing object of type " + obj.getClass().getName() + " to JXPathContext");
}
JXPathContext context = JXPathContext.newContext(obj);
initialise(context);
xpathResult = context.getValue(pattern);
}
if (logger.isDebugEnabled()) {
logger.debug(
"JXPathFilter Expression result = '"
+ xpathResult
+ "' - Expected value = '"
+ expectedValue
+ "'");
}
// Compare the XPath result with the expected result.
if (xpathResult != null) {
accept = xpathResult.toString().equals(expectedValue);
} else {
// A null result was actually expected.
if (expectedValue.equals("null")) {
accept = true;
}
// A null result was not expected, something probably went wrong.
else {
logger.warn("JXPathFilter expression evaluates to null: " + pattern);
}
}
if (logger.isDebugEnabled()) {
logger.debug("JXPathFilter accept object : " + accept);
}
return accept;
}
private boolean accept(Object obj) {
if (obj == null) {
logger.warn("Applying JXPathFilter to null object.");
return false;
}
if (pattern == null) {
logger.warn("Expression for JXPathFilter is not set.");
return false;
}
if (expectedValue == null) {
// Handle the special case where the expected value really is null.
if (pattern.endsWith("= null") || pattern.endsWith("=null")) {
expectedValue = "null";
pattern = pattern.substring(0, pattern.lastIndexOf("="));
} else {
if (logger.isInfoEnabled()) {
logger.info("Expected value for JXPathFilter is not set, using 'true' by default");
}
expectedValue = Boolean.TRUE.toString();
}
}
Object xpathResult = null;
boolean accept = false;
// Payload is a DOM Document
if (obj instanceof Document) {
if (namespaces == null) {
// no namespace defined, let's perform a direct evaluation
xpathResult = ((Document) obj).valueOf(pattern);
} else {
// create an xpath expression with namespaces and evaluate it
XPath xpath = DocumentHelper.createXPath(pattern);
xpath.setNamespaceURIs(namespaces);
xpathResult = xpath.valueOf(obj);
}
}
// Payload is a String of XML
else if (obj instanceof String) {
try {
return accept(DocumentHelper.parseText((String) obj));
} catch (DocumentException e) {
logger.warn("JXPathFilter unable to parse XML document: " + e.getMessage(), e);
if (logger.isDebugEnabled())
logger.debug("XML = " + StringMessageUtils.truncate((String) obj, 200, false));
return false;
}
}
// Payload is a Java object
else {
if (logger.isDebugEnabled()) {
logger.debug("Passing object of type " + obj.getClass().getName() + " to JXPathContext");
}
JXPathContext context = JXPathContext.newContext(obj);
initialise(context);
xpathResult = context.getValue(pattern);
}
if (logger.isDebugEnabled()) {
logger.debug(
"JXPathFilter Expression result = '"
+ xpathResult
+ "' - Expected value = '"
+ expectedValue
+ "'");
}
// Compare the XPath result with the expected result.
if (xpathResult != null) {
accept = xpathResult.toString().equals(expectedValue);
} else {
// A null result was actually expected.
if (expectedValue.equals("null")) {
accept = true;
}
// A null result was not expected, something probably went wrong.
else {
logger.warn("JXPathFilter expression evaluates to null: " + pattern);
}
}
if (logger.isDebugEnabled()) {
logger.debug("JXPathFilter accept object : " + accept);
}
return accept;
}