use of org.camunda.bpm.engine.impl.scripting.ScriptValueProvider in project camunda-bpm-platform by camunda.
the class BpmnParseUtil method parseParamValueProvider.
/**
* @throws BpmnParseException if the parameter is invalid
*/
protected static ParameterValueProvider parseParamValueProvider(Element parameterElement) {
// LIST
if ("list".equals(parameterElement.getTagName())) {
List<ParameterValueProvider> providerList = new ArrayList<ParameterValueProvider>();
for (Element element : parameterElement.elements()) {
// parse nested provider
providerList.add(parseParamValueProvider(element));
}
return new ListValueProvider(providerList);
}
// MAP
if ("map".equals(parameterElement.getTagName())) {
TreeMap<ParameterValueProvider, ParameterValueProvider> providerMap = new TreeMap<ParameterValueProvider, ParameterValueProvider>();
for (Element entryElement : parameterElement.elements("entry")) {
// entry must provide key
String keyAttribute = entryElement.attribute("key");
if (keyAttribute == null || keyAttribute.isEmpty()) {
throw new BpmnParseException("Missing attribute 'key' for 'entry' element", entryElement);
}
// parse nested provider
providerMap.put(new ElValueProvider(getExpressionManager().createExpression(keyAttribute)), parseNestedParamValueProvider(entryElement));
}
return new MapValueProvider(providerMap);
}
// SCRIPT
if ("script".equals(parameterElement.getTagName())) {
ExecutableScript executableScript = parseCamundaScript(parameterElement);
if (executableScript != null) {
return new ScriptValueProvider(executableScript);
} else {
return new NullValueProvider();
}
}
String textContent = parameterElement.getText().trim();
if (!textContent.isEmpty()) {
// EL
return new ElValueProvider(getExpressionManager().createExpression(textContent));
} else {
// NULL value
return new NullValueProvider();
}
}
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