private static final Node createNodeInternal(String expr) throws ELException {
if (expr == null) {
throw new ELException(MESSAGES.errorNullExpression());
}
Node n = (cache != null) ? cache.get(expr) : unlimitedCache.get(expr);
if (n == null) {
try {
n = (new ELParser(new StringReader(expr))).CompositeExpression();
// validate composite expression
int numChildren = n.jjtGetNumChildren();
if (numChildren == 1) {
n = n.jjtGetChild(0);
} else {
Class<?> type = null;
Node child = null;
for (int i = 0; i < numChildren; i++) {
child = n.jjtGetChild(i);
if (child instanceof AstLiteralExpression) continue;
if (type == null) type = child.getClass();
else {
if (!type.equals(child.getClass())) {
throw new ELException(MESSAGES.errorMixedExpression(expr));
}
}
}
}
if (n instanceof AstDeferredExpression || n instanceof AstDynamicExpression) {
n = n.jjtGetChild(0);
}
if (cache != null) {
cache.put(expr, n);
} else {
unlimitedCache.put(expr, n);
}
} catch (Exception e) {
throw new ELException(MESSAGES.errorParse(expr), e);
}
}
return n;
}
private static final Node createNodeInternal(String expr) throws ELException {
if (expr == null) {
throw new ELException(MessageFactory.get("error.null"));
}
Node n = cache.get(expr);
if (n == null) {
try {
n = (new ELParser(new StringReader(expr))).CompositeExpression();
// validate composite expression
if (n instanceof AstCompositeExpression) {
int numChildren = n.jjtGetNumChildren();
if (numChildren == 1) {
n = n.jjtGetChild(0);
} else {
Class type = null;
Node child = null;
for (int i = 0; i < numChildren; i++) {
child = n.jjtGetChild(i);
if (child instanceof AstLiteralExpression) continue;
if (type == null) type = child.getClass();
else {
if (!type.equals(child.getClass())) {
throw new ELException(MessageFactory.get("error.mixed", expr));
}
}
}
}
}
if (n instanceof AstDeferredExpression || n instanceof AstDynamicExpression) {
n = n.jjtGetChild(0);
}
cache.put(expr, n);
} catch (ParseException pe) {
throw new ELException("Error Parsing: " + expr, pe);
}
}
return n;
}