Interface XMLEventReader
- All Known Implementing Classes:
EventReaderDelegate
public interface XMLEventReader extends Iterator<Object>
This is the top level interface for parsing XML Events. It provides the ability to peek at the next event and returns configuration information through the property interface.
- Since:
- 1.6
- See Also:
-
XMLInputFactory
,XMLEventWriter
Method Summary
Modifier and Type | Method | Description |
---|---|---|
void | close() | Frees any resources associated with this Reader. |
String | getElementText() | Reads the content of a text-only element. |
Object | getProperty(String name) | Get the value of a feature/property from the underlying implementation |
boolean | hasNext() | Check if there are more events. |
XMLEvent | nextEvent() | Gets the next XMLEvent. |
XMLEvent | nextTag() | Skips any insignificant space events until a START_ELEMENT or END_ELEMENT is reached. |
XMLEvent | peek() | Check the next XMLEvent without reading it from the stream. |
Methods declared in interface java.util.Iterator
forEachRemaining, next, remove
Method Detail
nextEvent
XMLEvent nextEvent() throws XMLStreamException
Gets the next XMLEvent. The initial event is StartDocument
.
- Returns:
- the next XMLEvent
- Throws:
-
XMLStreamException
- if there is an error with the underlying XML. -
NoSuchElementException
- iteration has no more elements. - See Also:
XMLEvent
hasNext
boolean hasNext()
Check if there are more events. Returns true if there are more events and false otherwise.
- Specified by:
-
hasNext
in interfaceIterator<Object>
- Returns:
- true if the event reader has more events, false otherwise
peek
XMLEvent peek() throws XMLStreamException
Check the next XMLEvent without reading it from the stream. Returns null if the stream is at EOF or has no more XMLEvents. A call to peek() will be equal to the next return of next().
- Returns:
- the next XMLEvent
- Throws:
XMLStreamException
- See Also:
XMLEvent
getElementText
String getElementText() throws XMLStreamException
Reads the content of a text-only element. Precondition: the current event is START_ELEMENT. Postcondition: The current event is the corresponding END_ELEMENT.
- Returns:
- the text of the element
- Throws:
-
XMLStreamException
- if the current event is not a START_ELEMENT or if a non text element is encountered
nextTag
XMLEvent nextTag() throws XMLStreamException
Skips any insignificant space events until a START_ELEMENT or END_ELEMENT is reached. If anything other than space characters are encountered, an exception is thrown. This method should be used when processing element-only content because the parser is not able to recognize ignorable whitespace if the DTD is missing or not interpreted.
- Returns:
- a START_ELEMENT or END_ELEMENT
- Throws:
-
XMLStreamException
- if anything other than space characters are encountered
getProperty
Object getProperty(String name) throws IllegalArgumentException
Get the value of a feature/property from the underlying implementation
- Parameters:
-
name
- The name of the property - Returns:
- The value of the property
- Throws:
-
IllegalArgumentException
- if the property is not supported
close
void close() throws XMLStreamException
Frees any resources associated with this Reader. This method does not close the underlying input source.
- Throws:
-
XMLStreamException
- if there are errors freeing associated resources