private static ObjectWithGetAndSet getObjectWithGetAndSet()

in wicket-core/src/main/java/org/apache/wicket/core/util/lang/PropertyResolver.java [272:355]
77 lines of code
14 McCabe index (conditional complexity)

	private static ObjectWithGetAndSet getObjectWithGetAndSet(final String expression, final Object object, final int tryToCreateNull, Class<?> clz)
	{
		String expressionBracketsSeperated = Strings.replaceAll(expression, "[", ".[").toString();
		int index = getNextDotIndex(expressionBracketsSeperated, 0);
		while (index == 0 && expressionBracketsSeperated.startsWith("."))
		{
			// eat dots at the beginning of the expression since they will confuse
			// later steps
			expressionBracketsSeperated = expressionBracketsSeperated.substring(1);
			index = getNextDotIndex(expressionBracketsSeperated, 0);
		}
		int lastIndex = 0;
		Object value = object;
		String exp = expressionBracketsSeperated;
		while (index != -1)
		{
			exp = expressionBracketsSeperated.substring(lastIndex, index);
			if (exp.length() == 0)
			{
				exp = expressionBracketsSeperated.substring(index + 1);
				break;
			}

			IGetAndSet getAndSet;
			try
			{
				getAndSet = getGetAndSet(exp, clz);
			}
			catch (WicketRuntimeException ex)
			{
				// expression by itself can't be found. try combined with the following
				// expression (e.g. for a indexed property);
				int temp = getNextDotIndex(expressionBracketsSeperated, index + 1);
				if (temp == -1)
				{
					exp = expressionBracketsSeperated.substring(lastIndex);
					break;
				} else {
					index = temp;
					continue;
				}
			}
			Object nextValue = null;
			if (value != null)
			{
				nextValue = getAndSet.getValue(value);
			}
			if (nextValue == null)
			{
				if (tryToCreateNull == CREATE_NEW_VALUE)
				{
					nextValue = getAndSet.newValue(value);
					if (nextValue == null)
					{
						return null;
					}
				}
				else if (tryToCreateNull == RESOLVE_CLASS)
				{
					clz = getAndSet.getTargetClass();
				}
				else
				{
					return null;
				}
			}
			value = nextValue;
			if (value != null)
			{
				// value can be null if we are in the RESOLVE_CLASS
				clz = value.getClass();
			}

			lastIndex = index + 1;
			index = getNextDotIndex(expressionBracketsSeperated, lastIndex);
			if (index == -1)
			{
				exp = expressionBracketsSeperated.substring(lastIndex);
				break;
			}
		}
		IGetAndSet getAndSet = getGetAndSet(exp, clz);
		return new ObjectWithGetAndSet(getAndSet, value);
	}