org.jibx.runtime

Interface IMarshallingContext

All Known Implementing Classes:

MarshallingContext

public interface IMarshallingContext

User interface for serializer to XML. This provides methods used to set up and control the marshalling process, as well as access to the marshalling object stack while marshalling.

Author:

Dennis M. Sosnoski

Method Summary

Modifier and Type	Method and Description
void	endDocument() End document.
int	getIndent() Get current nesting indent spaces.
IMarshaller	getMarshaller(String mapname) Find the marshaller for a particular class in the current context.
int	getStackDepth() Get current marshalling object stack depth.
Object	getStackObject(int depth) Get object from marshalling stack.
Object	getStackTop() Get top object on marshalling stack.
Object	getUserContext() Get the user context object.
IXMLWriter	getXmlWriter() Get the writer being used for output.
void	marshalDocument(Object root) Marshal document from root object without XML declaration.
void	marshalDocument(Object root, String enc, Boolean alone) Marshal document from root object.
void	marshalDocument(Object root, String enc, Boolean alone, OutputStream outs) Marshal document from root object to output stream with encoding.
void	marshalDocument(Object root, String enc, Boolean alone, Writer outw) Marshal document from root object to writer.
void	popNamespaces() End use of namespace indexes from a separate binding.
void	popObject() Pop marshalled object from stack.
void	pushNamespaces(String factname) Use namespace indexes from a separate binding, as identified by that binding's factory class name.
void	pushObject(Object obj) Push created object to marshalling stack.
void	reset() Reset to initial state for reuse.
void	setIndent(int count) Set nesting indent spaces.
void	setIndent(int count, String newline, char indent) Set nesting indentation.
void	setOutput(OutputStream outs, String enc) Set output stream and encoding.
void	setOutput(OutputStream outs, String enc, ICharacterEscaper esc) Set output stream with encoding and escaper.
void	setOutput(Writer outw) Set output writer.
void	setOutput(Writer outw, ICharacterEscaper esc) Set output writer and escaper.
void	setUserContext(Object obj) Set a user context object.
void	setXmlWriter(IXMLWriter xwrite) Set the writer being used for output.
void	startDocument(String enc, Boolean alone) Start document, writing the XML declaration.
void	startDocument(String enc, Boolean alone, OutputStream outs) Start document with output stream and encoding.
void	startDocument(String enc, Boolean alone, Writer outw) Start document with writer.

Method Detail

setOutput

void setOutput(OutputStream outs,
               String enc,
               ICharacterEscaper esc)
        throws JiBXException

Set output stream with encoding and escaper. This forces handling of the output stream to use the Java character encoding support with the supplied escaper.

Parameters:

outs - stream for document data output

enc - document output encoding, or null uses UTF-8 default

esc - escaper for writing characters to stream

Throws:

JiBXException - if error setting output

setOutput

void setOutput(OutputStream outs,
               String enc)
        throws JiBXException

Set output stream and encoding.

Parameters:

outs - stream for document data output

enc - document output encoding, or null uses UTF-8 default

Throws:

JiBXException - if error setting output

setOutput

void setOutput(Writer outw,
               ICharacterEscaper esc)

Set output writer and escaper.

Parameters:

outw - writer for document data output

esc - escaper for writing characters

setOutput

void setOutput(Writer outw)

Set output writer. This assumes the standard UTF-8 encoding.

Parameters:

outw - writer for document data output

getXmlWriter

IXMLWriter getXmlWriter()

Get the writer being used for output.

Returns:

XML writer used for output

setXmlWriter

void setXmlWriter(IXMLWriter xwrite)

Set the writer being used for output.

Parameters:

xwrite - XML writer used for output

getIndent

int getIndent()

Get current nesting indent spaces. This returns the number of spaces used to show indenting, if used.

Returns:

number of spaces indented per level, or negative if indentation disabled

setIndent

void setIndent(int count)

Set nesting indent spaces. This is advisory only, and implementations of this interface are free to ignore it. The intent is to indicate that the generated output should use indenting to illustrate element nesting.

Parameters:

count - number of spaces to indent per level, or disable indentation if negative

setIndent

void setIndent(int count,
               String newline,
               char indent)

Set nesting indentation. This is advisory only, and implementations of this interface are free to ignore it. The intent is to indicate that the generated output should use indenting to illustrate element nesting.

Parameters:

count - number of character to indent per level, or disable indentation if negative (zero means new line only)

newline - sequence of characters used for a line ending (null means use the single character '\n')

indent - whitespace character used for indentation

reset

void reset()

Reset to initial state for reuse. The context is serially reusable, as long as this method is called to clear any retained state information between uses. It is automatically called when output is set.

startDocument

void startDocument(String enc,
                   Boolean alone)
            throws JiBXException

Start document, writing the XML declaration. This can only be validly called immediately following one of the set output methods; otherwise the output document will be corrupt.

Parameters:

enc - document encoding, null uses UTF-8 default

alone - standalone document flag, null if not specified

Throws:

JiBXException - on any error (possibly wrapping other exception)

startDocument

void startDocument(String enc,
                   Boolean alone,
                   OutputStream outs)
            throws JiBXException

Start document with output stream and encoding. The effect is the same as from first setting the output stream and encoding, then making the call to start document.

Parameters:

enc - document encoding, null uses UTF-8 default

alone - standalone document flag, null if not specified

outs - stream for document data output

Throws:

JiBXException - on any error (possibly wrapping other exception)

startDocument

void startDocument(String enc,
                   Boolean alone,
                   Writer outw)
            throws JiBXException

Start document with writer. The effect is the same as from first setting the writer, then making the call to start document.

Parameters:

enc - document encoding, null uses UTF-8 default

alone - standalone document flag, null if not specified

outw - writer for document data output

Throws:

JiBXException - on any error (possibly wrapping other exception)

endDocument

void endDocument()
          throws JiBXException

End document. Finishes all output and closes the document. Note that if this is called with an imcomplete marshalling the result will not be well-formed XML.

Throws:

JiBXException - on any error (possibly wrapping other exception)

marshalDocument

void marshalDocument(Object root)
              throws JiBXException

Marshal document from root object without XML declaration. This can only be validly called immediately following one of the set output methods; otherwise the output document will be corrupt. The effect of this method is the same as the sequence of a call to marshal the root object using this context followed by a call to endDocument().

Parameters:

root - object at root of structure to be marshalled, which must have a top-level mapping in the binding

Throws:

JiBXException - on any error (possibly wrapping other exception)

marshalDocument

void marshalDocument(Object root,
                     String enc,
                     Boolean alone)
              throws JiBXException

Marshal document from root object. This can only be validly called immediately following one of the set output methods; otherwise the output document will be corrupt. The effect of this method is the same as the sequence of a call to startDocument(String, Boolean), a call to marshal the root object using this context, and finally a call to endDocument().

Parameters:

root - object at root of structure to be marshalled, which must have a top-level mapping in the binding

enc - document encoding, null uses UTF-8 default

alone - standalone document flag, null if not specified

Throws:

JiBXException - on any error (possibly wrapping other exception)

marshalDocument

void marshalDocument(Object root,
                     String enc,
                     Boolean alone,
                     OutputStream outs)
              throws JiBXException

Marshal document from root object to output stream with encoding. The effect of this method is the same as the sequence of a call to startDocument(String, Boolean), a call to marshal the root object using this context, and finally a call to endDocument().

Parameters:

root - object at root of structure to be marshalled, which must have a top-level mapping in the binding

enc - document encoding, null uses UTF-8 default

alone - standalone document flag, null if not specified

outs - stream for document data output

Throws:

JiBXException - on any error (possibly wrapping other exception)

marshalDocument

void marshalDocument(Object root,
                     String enc,
                     Boolean alone,
                     Writer outw)
              throws JiBXException

Marshal document from root object to writer. The effect of this method is the same as the sequence of a call to startDocument(String, Boolean), a call to marshal the root object using this context, and finally a call to endDocument().

Parameters:

root - object at root of structure to be marshalled, which must have a top-level mapping in the binding

enc - document encoding, null uses UTF-8 default

alone - standalone document flag, null if not specified

outw - writer for document data output

Throws:

JiBXException - on any error (possibly wrapping other exception)

setUserContext

void setUserContext(Object obj)

Set a user context object. This context object is not used directly by JiBX, but can be accessed by all types of user extension methods. The context object is automatically cleared by the reset() method, so to make use of this you need to first call the appropriate version of the setOutput() method, then this method, and finally one of the marshalDocument methods which uses the previously-set output (not the ones which take a stream or writer as parameter, since they call setOutput() themselves).

Parameters:

obj - user context object, or null if clearing existing context object

See Also:

getUserContext()

getUserContext

Object getUserContext()

Get the user context object.

Returns:

user context object, or null if no context object set

See Also:

setUserContext(Object)

pushObject

void pushObject(Object obj)

Push created object to marshalling stack. This must be called before beginning the marshalling of the object. It is only called for objects with structure, not for those converted directly to and from text.

Parameters:

obj - object being marshalled

popObject

void popObject()
        throws JiBXException

Pop marshalled object from stack.

Throws:

JiBXException - if no object on stack

getStackDepth

int getStackDepth()

Get current marshalling object stack depth. This allows tracking nested calls to marshal one object while in the process of marshalling another object. The bottom item on the stack is always the root object of the marshalling.

Returns:

number of objects in marshalling stack

getStackObject

Object getStackObject(int depth)

Get object from marshalling stack. This stack allows tracking nested calls to marshal one object while in the process of marshalling another object. The bottom item on the stack is always the root object of the marshalling.

Parameters:

depth - object depth in stack to be retrieved (must be in the range of zero to the current depth minus one).

Returns:

object from marshalling stack

getStackTop

Object getStackTop()

Get top object on marshalling stack. This is safe to call even when no objects are on the stack.

Returns:

object from marshalling stack, or null if none

getMarshaller

IMarshaller getMarshaller(String mapname)
                   throws JiBXException

Find the marshaller for a particular class in the current context.

Parameters:

mapname - marshaller mapping name (generally the class name to be handled, or abstract mapping type name)

Returns:

marshalling handler for class

Throws:

JiBXException - on any error (possibly wrapping other exception)

pushNamespaces

void pushNamespaces(String factname)

Use namespace indexes from a separate binding, as identified by that binding's factory class name. The target binding must be a precompiled base binding of the binding used to create this marshalling context, either directly or by way of some other precompiled base binding(s).

Parameters:

factname - binding factory class name for binding defining namespaces

popNamespaces

void popNamespaces()

End use of namespace indexes from a separate binding. This will undo the effect of the most-recent call to pushNamespaces(String), restoring whatever namespace usage was in effect prior to that call.