/*
verifies that each of our registered parameters has a value, either given or default
throws an exeption otherwise
*/
private void verify() throws Exception {
for (Argument parameter : parameters.values()) {
if (parameter.getValue() == null && parameter.getDefaultValue() == null) {
throw new Exception(
String.format("Argument '%s' is required. Please see usage.", parameter.name));
}
}
}
/**
* Goes through SynapsePath argument list, evaluating each by calling stringValueOf and returns a
* HashMap String, String array where each item will contain a hash map with key "evaluated
* expression" and value "SynapsePath type".
*
* @param synCtx
* @return
*/
private HashMap<String, String>[] getArgValues(MessageContext synCtx) {
HashMap<String, String>[] argValues = new HashMap[pathArgumentList.size()];
HashMap<String, String> valueMap;
String value = "";
for (int i = 0; i < pathArgumentList.size(); ++i) {
/*ToDo use foreach*/
Argument arg = pathArgumentList.get(i);
if (arg.getValue() != null) {
value = arg.getValue();
if (!isWellFormedXML(value)) {
value = StringEscapeUtils.escapeXml(value);
}
value = Matcher.quoteReplacement(value);
} else if (arg.getExpression() != null) {
value = arg.getExpression().stringValueOf(synCtx);
if (value != null) {
// XML escape the result of an expression that produces a literal, if the target format
// of the payload is XML.
if (!isWellFormedXML(value)
&& !arg.getExpression().getPathType().equals(SynapsePath.JSON_PATH)
&& XML_TYPE.equals(getType())) {
value = StringEscapeUtils.escapeXml(value);
}
value = Matcher.quoteReplacement(value);
} else {
value = "";
}
} else {
handleException("Unexpected arg type detected", synCtx);
}
// value = value.replace(String.valueOf((char) 160), " ").trim();
valueMap = new HashMap<String, String>();
if (null != arg.getExpression()) {
valueMap.put(value, arg.getExpression().getPathType());
} else {
valueMap.put(value, SynapsePath.X_PATH);
}
argValues[i] = valueMap;
}
return argValues;
}
public Object getValue(String argumentName) {
Object value = null;
argumentName = argumentName.toLowerCase();
if (parameters.containsKey(argumentName)) {
Argument argument = parameters.get(argumentName);
value = argument.getValue();
if (value == null) {
String defaultValue = argument.getDefaultValue();
try {
value = argument.getHandler().tryArgument(defaultValue);
} catch (Exception e) {
}
}
}
return value;
}
/*
Tries each handler for the given parameter and returns a success boolean
*/
private boolean parseKV(String key, String value) throws Exception {
boolean success = false;
// must have a registered handler; see registerArgumentHandler()
if (!parameters.containsKey(key)) {
throw new Exception(key + " is not a valid argument");
}
Argument arg = parameters.get(key);
// don't allow dupes
if (arg.getValue() != null) {
throw new Exception("Duplicate arguments: " + key);
}
try {
// handler returns null if it can't handle the argument
// it can throw an exception if the argument is an unacceptable value
Object param = arg.getHandler().tryArgument(value);
if (param != null) {
arg.setValue(param);
success = true;
}
} catch (Exception e) {
throw new Exception("Bad argument value for '" + key + "': " + e.getMessage());
}
return success;
}