EventReaderDelegate (Java EE 5)

java.lang.Object
  javax.xml.stream.util.EventReaderDelegate

该类是用于派生 XMLEventReader 过滤器的基类。 此类设计用于 XMLEventReader 和应用程序的 XMLEventReader 之间。默认情况下，每种方法除了调用父接口中的相应方法之外，不执行任何操作。

version	1.0
See also	javax.xml.stream.XMLEventReader, javax.xml.stream.util.StreamReaderDelegate

英文文档：

This is the base class for deriving an XMLEventReader filter. This class is designed to sit between an XMLEventReader and an application's XMLEventReader. By default each method does nothing but call the corresponding method on the parent interface.

Version:

1.0

Author:

Copyright (c) 2003 by BEA Systems. All Rights Reserved.

See Also:

XMLEventReader, StreamReaderDelegate

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Constructor Summary
EventReaderDelegate()           Construct an empty filter with no parent.
EventReaderDelegate(XMLEventReader reader)           Construct an filter with the specified parent.

 

Method Summary
void	close()           Frees any resources associated with this Reader.
String	getElementText()           Reads the content of a text-only element.
XMLEventReader	getParent()           Get the parent of this instance.
Object	getProperty(String name)           Get the value of a feature/property from the underlying implementation
boolean	hasNext()           Check if there are more events.
Object	next()
XMLEvent	nextEvent()           Get 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.
void	remove()
void	setParent(XMLEventReader reader)           Set the parent of this instance.

 

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Constructor Detail

public EventReaderDelegate()
构造没有父过滤器的空过滤器。

英文文档：

EventReaderDelegate

public EventReaderDelegate()

Construct an empty filter with no parent.

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public EventReaderDelegate(XMLEventReader reader)
用指定的父过滤器来构造一个过滤器。

reader

父级

英文文档：

EventReaderDelegate

public EventReaderDelegate(XMLEventReader reader)

Construct an filter with the specified parent.

Parameters:

reader - the parent

Method Detail

public void setParent(XMLEventReader reader)
设置此实例的父实例。

reader

新的父实例

英文文档：

setParent

public void setParent(XMLEventReader reader)

Set the parent of this instance.

Parameters:

reader - the new parent

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public XMLEventReader getParent()
获取此实例的父实例。

return

父实例；如果没有设置父实例，则返回 null

英文文档：

getParent

public XMLEventReader getParent()

Get the parent of this instance.

Returns:

the parent or null if none is set

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public XMLEvent nextEvent() throws XMLStreamException

英文文档：

nextEvent

public XMLEvent nextEvent()
                   throws XMLStreamException

Description copied from interface: XMLEventReader

Get the next XMLEvent

Specified by:

nextEvent in interface XMLEventReader

Throws:

XMLStreamException - if there is an error with the underlying XML.

See Also:

XMLEvent

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public Object next()

英文文档：

next

public Object next()

Specified by:

next in interface Iterator

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public boolean hasNext()

英文文档：

hasNext

public boolean hasNext()

Description copied from interface: XMLEventReader

Check if there are more events. Returns true if there are more events and false otherwise.

Specified by:

hasNext in interface Iterator

Specified by:

hasNext in interface XMLEventReader

Returns:

true if the event reader has more events, false otherwise

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public XMLEvent peek() throws XMLStreamException

英文文档：

peek

public XMLEvent peek()
              throws XMLStreamException

Description copied from interface: XMLEventReader

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().

Specified by:

peek in interface XMLEventReader

Throws:

XMLStreamException

See Also:

XMLEvent

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public void close() throws XMLStreamException

英文文档：

close

public void close()
           throws XMLStreamException

Description copied from interface: XMLEventReader

Frees any resources associated with this Reader. This method does not close the underlying input source.

Specified by:

close in interface XMLEventReader

Throws:

XMLStreamException - if there are errors freeing associated resources

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public String getElementText() throws XMLStreamException

英文文档：

getElementText

public String getElementText()
                      throws XMLStreamException

Description copied from interface: XMLEventReader

Reads the content of a text-only element. Precondition: the current event is START_ELEMENT. Postcondition: The current event is the corresponding END_ELEMENT.

Specified by:

getElementText in interface XMLEventReader

Throws:

XMLStreamException - if the current event is not a START_ELEMENT or if a non text element is encountered

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public XMLEvent nextTag() throws XMLStreamException

英文文档：

nextTag

public XMLEvent nextTag()
                 throws XMLStreamException

Description copied from interface: XMLEventReader

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.

Specified by:

nextTag in interface XMLEventReader

Throws:

XMLStreamException - if anything other than space characters are encountered

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public Object getProperty(String name) throws IllegalArgumentException

英文文档：

getProperty

public Object getProperty(String name)
                   throws IllegalArgumentException

Description copied from interface: XMLEventReader

Get the value of a feature/property from the underlying implementation

Specified by:

getProperty in interface XMLEventReader

Parameters:

name - The name of the property

Returns:

The value of the property

Throws:

IllegalArgumentException - if the property is not supported

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public void remove()

英文文档：

remove

public void remove()

Specified by:

remove in interface Iterator

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