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Java Source Code / Java Documentation » XML » xstream 1.3 » com.thoughtworks.xstream.io

Source Cross Reference

Class Diagram

Java Document (Java Doc)

com.thoughtworks.xstream.io .HierarchicalStreamReader

All known Subclasses:   com.thoughtworks.xstream.io.binary .BinaryStreamReader,  com.thoughtworks.xstream.io.xml .AbstractXmlReader,  com.thoughtworks.xstream.io .ReaderWrapper,
HierarchicalStreamReader
public interface HierarchicalStreamReader (Code)

author:
   Joe Walnes

Method Summary
void appendErrors(ErrorWriter errorWriter)
     If any errors are detected, allow the reader to add any additional information that can aid debugging (such as line numbers, XPath expressions, etc).
void close()
     Close the reader, if necessary.
String getAttribute(String name)
     Get the value of an attribute of the current node.
String getAttribute(int index)
     Get the value of an attribute of the current node, by index.
int getAttributeCount()
     Number of attributes in current node.
String getAttributeName(int index)
     Name of attribute in current node.
Iterator getAttributeNames()
     Names of attributes (as Strings).
String getNodeName()
     Get the name of the current node.
String getValue()
     Get the value (text content) of the current node.
boolean hasMoreChildren()

void moveDown()
     Select the current child as current node.
void moveUp()
     Select the parent node as current node.
HierarchicalStreamReader underlyingReader()
     Return the underlying HierarchicalStreamReader implementation.
If a Converter needs to access methods of a specific HierarchicalStreamReader implementation that are not defined in the HierarchicalStreamReader interface, it should call this method before casting.

Method Detail
appendErrors
void appendErrors(ErrorWriter errorWriter)(Code)
If any errors are detected, allow the reader to add any additional information that can aid debugging (such as line numbers, XPath expressions, etc).

close
void close()(Code)
Close the reader, if necessary.

getAttribute
String getAttribute(String name)(Code)
Get the value of an attribute of the current node.

getAttribute
String getAttribute(int index)(Code)
Get the value of an attribute of the current node, by index.

getAttributeCount
int getAttributeCount()(Code)
Number of attributes in current node.

getAttributeName
String getAttributeName(int index)(Code)
Name of attribute in current node.

getAttributeNames
Iterator getAttributeNames()(Code)
Names of attributes (as Strings).

getNodeName
String getNodeName()(Code)
Get the name of the current node.

getValue
String getValue()(Code)
Get the value (text content) of the current node.

hasMoreChildren
boolean hasMoreChildren()(Code)
Does the node have any more children remaining that have not yet been read?

moveDown
void moveDown()(Code)
Select the current child as current node. A call to this function must be balanced with a call to HierarchicalStreamReader.moveUp() .

moveUp
void moveUp()(Code)
Select the parent node as current node.

underlyingReader
HierarchicalStreamReader underlyingReader()(Code)
Return the underlying HierarchicalStreamReader implementation.
If a Converter needs to access methods of a specific HierarchicalStreamReader implementation that are not defined in the HierarchicalStreamReader interface, it should call this method before casting. This is because the reader passed to the Converter is often wrapped/decorated by another implementation to provide additional functionality (such as XPath tracking).

For example:

MySpecificReader mySpecificReader = (MySpecificReader)reader; // INCORRECT! mySpecificReader.doSomethingSpecific();

MySpecificReader mySpecificReader = (MySpecificReader)reader.underlyingReader(); // CORRECT! mySpecificReader.doSomethingSpecific();

Implementations of HierarchicalStreamReader should return 'this', unless they are a decorator, in which case they should delegate to whatever they are wrapping.

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