Class StatefulWriter

java.lang.Object

com.thoughtworks.xstream.io.WriterWrapper

com.thoughtworks.xstream.io.StatefulWriter

All Implemented Interfaces:

ExtendedHierarchicalStreamWriter, HierarchicalStreamWriter

public class StatefulWriter
extends WriterWrapper

An wrapper for all HierarchicalStreamWriter implementations, that keeps the state. Writing in a wrong state will throw a StreamException, that wraps either an IOException (writing to a closed writer) or an IllegalStateException. The implementation will also track unbalanced nodes or multiple attributes with the same name.

Since:

1.2

Field Summary

Fields

Modifier and Type	Field	Description
private FastStack	attributes
private int	balance
private int	state
static int	STATE_CLOSED	STATE_CLOSED is the state if the writer has been closed.
static int	STATE_NODE_END	STATE_NODE_END is the state if a node has ended
static int	STATE_NODE_START	STATE_NODE_START is the state of a new node has been started.
static int	STATE_OPEN	STATE_OPEN is the initial value of the writer.
static int	STATE_VALUE	STATE_VALUE is the state if the value of a node has been written.

Fields inherited from class WriterWrapper

wrapped

Constructor Summary

Constructors

Constructor	Description
StatefulWriter(HierarchicalStreamWriter wrapped)	Constructs a StatefulWriter.

Method Summary

Modifier and Type	Method	Description
void	addAttribute(String name, String value)
private void	checkClosed()
void	close()	Close the writer, if necessary.
void	endNode()
void	flush()	Flush the writer, if necessary.
private Object	readResolve()
void	setValue(String text)	Write the value (text content) of the current node.
void	startNode(String name)
void	startNode(String name, Class clazz)
private void	startNodeCommon()
int	state()	Retrieve the state of the writer.

Methods inherited from class WriterWrapper

underlyingWriter

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

STATE_OPEN

public static int STATE_OPEN

STATE_OPEN is the initial value of the writer.

Since:

1.2

STATE_NODE_START

public static int STATE_NODE_START

STATE_NODE_START is the state of a new node has been started.

Since:

1.2

STATE_VALUE

public static int STATE_VALUE

STATE_VALUE is the state if the value of a node has been written.

Since:

1.2

STATE_NODE_END

public static int STATE_NODE_END

STATE_NODE_END is the state if a node has ended

Since:

1.2

STATE_CLOSED

public static int STATE_CLOSED

STATE_CLOSED is the state if the writer has been closed.

Since:

1.2

state

private transient int state

balance

private transient int balance

attributes

private transient FastStack attributes

Constructor Details

StatefulWriter

public StatefulWriter(HierarchicalStreamWriter wrapped)

Constructs a StatefulWriter.

Parameters:

wrapped - the wrapped writer

Since:

1.2

Method Details

startNode

public void startNode(String name)

Specified by:

startNode in interface HierarchicalStreamWriter

Overrides:

startNode in class WriterWrapper

startNode

public void startNode(String name,
 Class clazz)

Specified by:

startNode in interface ExtendedHierarchicalStreamWriter

Overrides:

startNode in class WriterWrapper

startNodeCommon

private void startNodeCommon()

addAttribute

public void addAttribute(String name,
 String value)

Specified by:

addAttribute in interface HierarchicalStreamWriter

Overrides:

addAttribute in class WriterWrapper

setValue

public void setValue(String text)

Description copied from interface: HierarchicalStreamWriter

Write the value (text content) of the current node.

Specified by:

setValue in interface HierarchicalStreamWriter

Overrides:

setValue in class WriterWrapper

endNode

public void endNode()

Specified by:

endNode in interface HierarchicalStreamWriter

Overrides:

endNode in class WriterWrapper

flush

public void flush()

Description copied from interface: HierarchicalStreamWriter

Flush the writer, if necessary.

Specified by:

flush in interface HierarchicalStreamWriter

Overrides:

flush in class WriterWrapper

close

public void close()

Description copied from interface: HierarchicalStreamWriter

Close the writer, if necessary.

Specified by:

close in interface HierarchicalStreamWriter

Overrides:

close in class WriterWrapper

checkClosed

private void checkClosed()

state

public int state()

Retrieve the state of the writer.

Returns:

one of the states

Since:

1.2

See Also:

• STATE_OPEN
• STATE_NODE_START
• STATE_VALUE
• STATE_NODE_END
• STATE_CLOSED

readResolve

private Object readResolve()