类 StaxEventItemReader<T>

构造器详细资料

• StaxEventItemReader

  public StaxEventItemReader()

方法详细资料

• setStrict

  public void setStrict​(boolean strict)

  In strict mode the reader will throw an exception on AbstractItemCountingItemStreamItemReader.open(org.springframework.batch.item.ExecutionContext) if the input resource does not exist.

  参数:

  strict - true by default

• setResource

  public void setResource​(org.springframework.core.io.Resource resource)

  指定者:

  setResource 在接口中 ResourceAwareItemReaderItemStream<T>

• setUnmarshaller

  public void setUnmarshaller​(org.springframework.oxm.Unmarshaller unmarshaller)

  参数:

  unmarshaller - maps xml fragments corresponding to records to objects

• setFragmentRootElementName

  public void setFragmentRootElementName​(java.lang.String fragmentRootElementName)

  参数:

  fragmentRootElementName - name of the root element of the fragment

• setFragmentRootElementNames

  public void setFragmentRootElementNames​(java.lang.String[] fragmentRootElementNames)

  参数:

  fragmentRootElementNames - list of the names of the root element of the fragment

• setXmlInputFactory

  public void setXmlInputFactory​(javax.xml.stream.XMLInputFactory xmlInputFactory)

  Set the XMLInputFactory.

  参数:

  xmlInputFactory - to use

• afterPropertiesSet

  public void afterPropertiesSet()
                          throws java.lang.Exception

  Ensure that all required dependencies for the ItemReader to run are provided after all properties have been set.

  指定者:

  afterPropertiesSet 在接口中 org.springframework.beans.factory.InitializingBean

  抛出:

  java.lang.IllegalArgumentException - if the Resource, FragmentDeserializer or FragmentRootElementName is null, or if the root element is empty.

  java.lang.IllegalStateException - if the Resource does not exist.

  java.lang.Exception

  另请参阅:

  InitializingBean.afterPropertiesSet()

• moveCursorToNextFragment

  protected boolean moveCursorToNextFragment​(javax.xml.stream.XMLEventReader reader)
                                      throws NonTransientResourceException

  Responsible for moving the cursor before the StartElement of the fragment root. This implementation simply looks for the next corresponding element, it does not care about element nesting. You will need to override this method to correctly handle composite fragments.

  参数:

  reader - the XMLEventReader to be used to find next fragment.

  返回:

  true if next fragment was found, false otherwise.

  抛出:

  NonTransientResourceException - if the cursor could not be moved. This will be treated as fatal and subsequent calls to read will return null.

• doClose

  protected void doClose()
                  throws java.lang.Exception

  从类复制的说明: AbstractItemCountingItemStreamItemReader
  Close the resources opened in AbstractItemCountingItemStreamItemReader.doOpen().

  指定者:

  doClose 在类中 AbstractItemCountingItemStreamItemReader<T>

  抛出:

  java.lang.Exception - Allows subclasses to throw checked exceptions for interpretation by the framework

• doOpen

  protected void doOpen()
                 throws java.lang.Exception

  从类复制的说明: AbstractItemCountingItemStreamItemReader
  Open resources necessary to start reading input.

  指定者:

  doOpen 在类中 AbstractItemCountingItemStreamItemReader<T>

  抛出:

  java.lang.Exception - Allows subclasses to throw checked exceptions for interpretation by the framework

• doRead

  protected T doRead()
              throws java.io.IOException,
                     javax.xml.stream.XMLStreamException

  Move to next fragment and map it to item.

  指定者:

  doRead 在类中 AbstractItemCountingItemStreamItemReader<T>

  返回:

  an item or null if the data source is exhausted

  抛出:

  java.io.IOException

  javax.xml.stream.XMLStreamException

• jumpToItem

  protected void jumpToItem​(int itemIndex)
                     throws java.lang.Exception

  从类复制的说明: AbstractItemCountingItemStreamItemReader
  Move to the given item index. Subclasses should override this method if there is a more efficient way of moving to given index than re-reading the input using AbstractItemCountingItemStreamItemReader.doRead().

  覆盖:

  jumpToItem 在类中 AbstractItemCountingItemStreamItemReader<T>

  参数:

  itemIndex - index of item (0 based) to jump to.

  抛出:

  java.lang.Exception - Allows subclasses to throw checked exceptions for interpretation by the framework