Example usage for org.apache.commons.beanutils.expression Resolver next

Introduction

In this page you can find the example usage for org.apache.commons.beanutils.expression Resolver next.

Prototype

String next(String expression);

Source Link

Document

Extract the next property expression from the current expression.

Usage

From source file:nl.ucan.navigate.NestedPath.java

public PathContext acquirePathContext(Object bean, String path) throws IllegalAccessException,
        InvocationTargetException, InstantiationException, IntrospectionException, NoSuchMethodException {
    PathContext pathContext = new PathContext(ResolverImpl.getNested());
    Object instance = bean;/*w ww  .  ja  va 2  s  .  c  o m*/
    DynaBean dynaBean = getDynaBean(instance);
    pub.copyProperties(instance, bean);
    Resolver resolver = pub.getResolver();
    for (; StringUtils.isNotBlank(path); path = resolver.remove(path)) {
        String prop = resolver.getProperty(path);
        if (resolver.isIndexed(path)) {
            String undeterminedIdx = getUndeterminedIndex(path);
            int positionalIdx = getPositionalIndex(undeterminedIdx);
            if (positionalIdx == -1) {
                Object object = pub.getProperty(dynaBean, prop);
                int idx = indexPointer.firstIndexOf(object, undeterminedIdx);
                if (idx == -1) {
                    Object nestedBean = (pathContext.noPathSpecified() ? bean
                            : pub.getProperty(bean, pathContext.toString()));
                    instance = createInstanceOfCollection(instance.getClass(), prop);
                    indexPointer.setIndexAsProperty(instance, undeterminedIdx);
                    instance = propertyInstance.indexed(nestedBean, prop, indexPointer.size(object), instance);
                    String replace = namedToPositioned(resolver.next(path), indexPointer.size(object));
                    pub.setIndexedProperty(dynaBean, replace, instance); // create object at required position
                    pub.setProperty(bean, (StringUtils.isBlank(pathContext.toString()) ? prop
                            : pathContext.toString() + ResolverImpl.getNested() + prop), object);
                    pathContext.addPart(replace);
                } else {
                    String replace = namedToPositioned(resolver.next(path), idx);
                    pathContext.addPart(replace);
                    instance = indexPointer.get(object, idx);
                }
            } else {
                Object tmp = pub.getIndexedProperty(dynaBean, prop, positionalIdx); // create object at required position
                if (tmp == null) {
                    Object nestedBean = (pathContext.noPathSpecified() ? bean
                            : pub.getProperty(bean, pathContext.toString()));
                    growCollection(instance, prop, positionalIdx);
                    instance = createInstanceOfCollection(instance.getClass(), prop);
                    instance = propertyInstance.indexed(nestedBean, prop, positionalIdx, instance);
                    pathContext.addPart(resolver.next(path));
                    pub.setProperty(bean, pathContext.toString(), instance);
                } else {
                    pathContext.addPart(resolver.next(path));
                    instance = tmp;
                }
            }
        } else {
            instance = pub.getProperty(instance, prop);
            if (instance == null) {
                instance = pub.getProperty(dynaBean, prop);
                Object nestedBean = (pathContext.noPathSpecified() ? bean
                        : pub.getProperty(bean, pathContext.toString()));
                instance = propertyInstance.simple(nestedBean, prop, instance);
                pathContext.addPart(resolver.next(path));
                String tmp = pathContext.toString();
                pub.setProperty(bean, tmp, instance);
            } else {
                pathContext.addPart(resolver.next(path));
            }
        }
        if (resolver.hasNested(path))
            dynaBean = getDynaBean(instance);
    }
    pathContext.setBean(bean);
    return pathContext;
}

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