public class JbpmElFactoryImpl
extends JbpmElFactory {
private static Log log = Log.getLog(JbpmElFactoryImpl.
class.getName());
Class<?> functionClass = JstlFunction.
class;
/** create ElContext used during parsing time */ public ELContext createElContext() {
return createCompositeResolver(
null);
}
/** create ElContext used during evaluation time related to an execution */ public ELContext createElContext(ScopeInstanceImpl scopeInstance) {
return createCompositeResolver(scopeInstance);
}
protected ELContext createCompositeResolver(ScopeInstanceImpl scopeInstance) {
CompositeELResolver compositeELResolver =
new CompositeELResolver();
if (scopeInstance!=
null) {
compositeELResolver.add(
new JbpmConstantsElResolver(scopeInstance));
compositeELResolver.add(
new JbpmVariableElResolver(scopeInstance));
}
EnvironmentImpl environment = EnvironmentImpl.getCurrent();
if (environment!=
null) {
compositeELResolver.add(
new JbpmEnvironmentElResolver(environment));
}
addCdiResolver(compositeELResolver);
addBasicResolvers(compositeELResolver);
FunctionMapper functionMapper = createFunctionMapper();
return createElContext(compositeELResolver, functionMapper);
}
protected void addCdiResolver(CompositeELResolver compositeELResolver) {
BeanManager beanManager = getBeanManager();
if (beanManager!=
null) {
ELResolver cdiResolver = beanManager.getELResolver();
if (cdiResolver!=
null) {
compositeELResolver.add(cdiResolver);
log.debug("added cdi el resolver");
}
}
else {
log.debug("no cdi bean manager available in jndi");
}
}
protected BeanManager getBeanManager() {
try {
InitialContext initialContext =
new InitialContext();
return (BeanManager) initialContext.lookup("java:comp/BeanManager");
}
catch (NamingException e) {
return null;
}
}
public ExpressionFactory createExpressionFactory() {
ExpressionFactory expressionFactory;
try {
expressionFactory = ExpressionFactory.newInstance();
}
catch (NoSuchMethodError e) {
// to support previous version of el-api expressionFactory = (ExpressionFactory) FactoryFinder.find(ExpressionFactory.
class .getName(),"de.odysseus.el.ExpressionFactoryImpl",
null, "el.properties");
}
BeanManager beanManager = getBeanManager();
if (beanManager!=
null) {
expressionFactory = beanManager.wrapExpressionFactory(expressionFactory);
}
return expressionFactory;
}
protected void addBasicResolvers(CompositeELResolver compositeELResolver) {
compositeELResolver.add(
new ResourceBundleELResolver());
compositeELResolver.add(
new MapELResolver());
compositeELResolver.add(
new ListELResolver());
compositeELResolver.add(
new ArrayELResolver());
compositeELResolver.add(
new BeanELResolver());
}
protected FunctionMapper createFunctionMapper() {
return new JbpmFunctionMapper(functionClass);
}
protected JbpmElContext createElContext(CompositeELResolver compositeELResolver, FunctionMapper functionMapper) {
return new JbpmElContext(compositeELResolver, functionMapper);
}
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