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javax.xml.xquery.XQSequence.getItem()方法的使用及代码示例

转载 作者:知者 更新时间:2024-03-19 16:02:40 24 4
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本文整理了Java中javax.xml.xquery.XQSequence.getItem()方法的一些代码示例,展示了XQSequence.getItem()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台,是从一些精选项目中提取出来的代码,具有较强的参考意义,能在一定程度帮忙到你。XQSequence.getItem()方法的具体详情如下:
包路径:javax.xml.xquery.XQSequence
类名称:XQSequence
方法名:getItem

XQSequence.getItem介绍

[英]Get the current item as an immutable XQItem object. In case of an XQResultSequence, the item is an XQResultItem. In the case of forward only sequences, this method or any other get or write method may only be called once on the curent item.

The XQItem object is dependent on the sequence from which it was created and is only valid for the duration of XQSequence lifetime. Thus, the XQSequence is closed, this XQItem object will be implicitly closed and it can no longer be used.
[中]将当前项作为不可变的XQItem对象获取。如果是XQResultSequence,则该项目为XQResultItem。在仅向前序列的情况下,此方法或任何其他get或write方法只能在当前项上调用一次。
XQItem对象依赖于创建它的序列,并且仅在XQSequence生存期内有效。因此,XQSequence被关闭,这个XQItem对象将被隐式关闭,不能再使用。

代码示例

代码示例来源:origin: dsukhoroslov/bagri

@SuppressWarnings({ "rawtypes", "unchecked" })
private List getList(XQSequence xqc) throws XQException {
  ArrayList list = new ArrayList();
  boolean hasNext = xqc.isOnItem();
  if (!hasNext) {
    hasNext = xqc.next();
  }
  while (hasNext) {
    list.add(xqc.getItem());
    hasNext = xqc.next();
  }
  return list;
}

代码示例来源:origin: dsukhoroslov/bagri

@Override
public Item next() throws XPathException {
  try {
    if (xqs.next()) {
      return convertXQItem(xqs.getItem(), config);
    }
  } catch (XQException ex) {
    throw new XPathException(ex);
  }
  return null;
}

代码示例来源:origin: dsukhoroslov/bagri

@Override
public void write(ObjectDataOutput out, XQSequence sequence) throws IOException {
  try {
    List<XQItemAccessor> items;
    synchronized (sequence) {
      if (sequence.isScrollable()) {
        sequence.beforeFirst();
        items = new ArrayList<>(sequence.count());
      } else {
        items = new ArrayList<>();
      }
      while (sequence.next()) {
        Object value = sequence.getObject();
        if (value instanceof XQItemAccessor) {
          items.add((XQItemAccessor) value);
        } else {
          items.add(sequence.getItem());
        }
      }
    }
    logger.trace("write; writing {} items", items.size());
    out.writeObject(items);
  } catch (XQException ex) {
    throw new IOException(ex);
  }
}

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