private T parseAnything()

in juneau-core/juneau-marshall-rdf/src/main/java/org/apache/juneau/jena/RdfParserSession.java [380:521]
131 lines of code
54 McCabe index (conditional complexity)

	private <T> T parseAnything(ClassMeta<?> eType, RDFNode n, Object outer, BeanPropertyMeta pMeta) throws ParseException {

		if (eType == null)
			eType = object();
		ObjectSwap<T,Object> swap = (ObjectSwap<T,Object>)eType.getSwap(this);
		BuilderSwap<T,Object> builder = (BuilderSwap<T,Object>)eType.getBuilderSwap(this);
		ClassMeta<?> sType = null;
		if (builder != null)
			sType = builder.getBuilderClassMeta(this);
		else if (swap != null)
			sType = swap.getSwapClassMeta(this);
		else
			sType = eType;

		if (sType.isOptional())
			return (T)optional(parseAnything(eType.getElementType(), n, outer, pMeta));

		setCurrentClass(sType);

		if (! sType.canCreateNewInstance(outer)) {
			if (n.isResource()) {
				Statement st = n.asResource().getProperty(pType);
				if (st != null) {
					String c = st.getLiteral().getString();
					ClassMeta tcm = getClassMeta(c, pMeta, eType);
					if (tcm != null)
						sType = eType = tcm;
				}
			}
		}

		Object o = null;
		if (n.isResource() && n.asResource().getURI() != null && n.asResource().getURI().equals(RDF_NIL)) {
			// Do nothing.  Leave o == null.
		} else if (sType.isObject()) {
			if (n.isLiteral()) {
				o = n.asLiteral().getValue();
				if (o instanceof String) {
					o = decodeString(o);
				}
			}
			else if (n.isResource()) {
				Resource r = n.asResource();
				if (! urisVisited.add(r))
					o = r.getURI();
				else if (r.getProperty(pValue) != null) {
					o = parseAnything(object(), n.asResource().getProperty(pValue).getObject(), outer, null);
				} else if (isSeq(r)) {
					o = new JsonList(this);
					parseIntoCollection(r.as(Seq.class), (Collection)o, sType, pMeta);
				} else if (isBag(r)) {
					o = new JsonList(this);
					parseIntoCollection(r.as(Bag.class), (Collection)o, sType, pMeta);
				} else if (r.canAs(RDFList.class)) {
					o = new JsonList(this);
					parseIntoCollection(r.as(RDFList.class), (Collection)o, sType, pMeta);
				} else {
					// If it has a URI and no child properties, we interpret this as an
					// external resource, and convert it to just a URL.
					String uri = r.getURI();
					if (uri != null && ! r.listProperties().hasNext()) {
						o = r.getURI();
					} else {
						JsonMap m2 = new JsonMap(this);
						parseIntoMap(r, m2, null, null, pMeta);
						o = cast(m2, pMeta, eType);
					}
				}
			} else {
				throw new ParseException(this, "Unrecognized node type ''{0}'' for object", n);
			}
		} else if (sType.isBoolean()) {
			o = convertToType(getValue(n, outer), boolean.class);
		} else if (sType.isCharSequence()) {
			o = decodeString(getValue(n, outer));
		} else if (sType.isChar()) {
			o = parseCharacter(decodeString(getValue(n, outer)));
		} else if (sType.isNumber()) {
			o = parseNumber(getValue(n, outer).toString(), (Class<? extends Number>)sType.getInnerClass());
		} else if (sType.isMap()) {
			Resource r = n.asResource();
			if (! urisVisited.add(r))
				return null;
			Map m = (sType.canCreateNewInstance(outer) ? (Map)sType.newInstance(outer) : newGenericMap(sType));
			o = parseIntoMap(r, m, eType.getKeyType(), eType.getValueType(), pMeta);
		} else if (sType.isCollectionOrArray() || sType.isArgs()) {
			if (sType.isArray() || sType.isArgs())
				o = list();
			else
				o = (sType.canCreateNewInstance(outer) ? (Collection<?>)sType.newInstance(outer) : new JsonList(this));
			Resource r = n.asResource();
			if (! urisVisited.add(r))
				return null;
			if (isSeq(r)) {
				parseIntoCollection(r.as(Seq.class), (Collection)o, sType, pMeta);
			} else if (isBag(r)) {
				parseIntoCollection(r.as(Bag.class), (Collection)o, sType, pMeta);
			} else if (r.canAs(RDFList.class)) {
				parseIntoCollection(r.as(RDFList.class), (Collection)o, sType, pMeta);
			} else {
				throw new ParseException(this, "Unrecognized node type ''{0}'' for collection", n);
			}
			if (sType.isArray() || sType.isArgs())
				o = toArray(sType, (Collection)o);
		} else if (builder != null) {
			Resource r = n.asResource();
			if (! urisVisited.add(r))
				return null;
			BeanMap<?> bm = toBeanMap(builder.create(this, eType));
			o = builder.build(this, parseIntoBeanMap(r, bm).getBean(), eType);
		} else if (sType.canCreateNewBean(outer)) {
			Resource r = n.asResource();
			if (! urisVisited.add(r))
				return null;
			BeanMap<?> bm = newBeanMap(outer, sType.getInnerClass());
			o = parseIntoBeanMap(r, bm).getBean();
		} else if (sType.isUri() && n.isResource()) {
			o = sType.newInstanceFromString(outer, decodeString(n.asResource().getURI()));
		} else if (sType.canCreateNewInstanceFromString(outer)) {
			o = sType.newInstanceFromString(outer, decodeString(getValue(n, outer)));
		} else if (n.isResource()) {
			Resource r = n.asResource();
			Map m = newGenericMap(sType);
			parseIntoMap(r, m, sType.getKeyType(), sType.getValueType(), pMeta);
			if (m.containsKey(getBeanTypePropertyName(eType)))
				o = cast((JsonMap)m, pMeta, eType);
			else if (sType.getProxyInvocationHandler() != null)
				o = newBeanMap(outer, sType.getInnerClass()).load(m).getBean();
			else
				throw new ParseException(this, "Class ''{0}'' could not be instantiated.  Reason: ''{1}''", sType.getInnerClass().getName(), sType.getNotABeanReason());
		} else {
			throw new ParseException(this, "Class ''{0}'' could not be instantiated.  Reason: ''{1}''", sType.getInnerClass().getName(), sType.getNotABeanReason());
		}

		if (swap != null && o != null)
			o = unswap(swap, o, eType);

		if (outer != null)
			setParent(eType, o, outer);

		return (T)o;
	}