org.beanio
Interface Marshaller

All Known Implementing Classes:

MarshallerImpl

public interface Marshaller

Interface for marshalling bean objects.

A Marshaller can be used to marshal a bean object bound to a record in a mapping file. Marshalling bean objects that span multiple records is not supported and will cause a BeanWriterException.

Depending on the stream format, a bean object can be marshalled to one or more formats. All stream formats support marshalling to a String value, as shown in the following example:

   marshaller.marshal(object).toString();

A Marshaller instance is stateful. If a BeanIO mapping file declares record ordering and expected occurrences, a BeanWriterException may be thrown for bean objects written out of sequence or that have exceeded a record's maximum occurrences.

There is some performance benefit for reusing the same Marshaller instance, but a Marshaller is not thread safe and should not be used to concurrently marshal multiple bean objects.

Since:

2.0

Author:

Kevin Seim

Method Summary

Marshaller	marshal(Object bean) Marshals a single bean object.
Marshaller	marshal(String recordName, Object bean) Marshals a single bean object.
String[]	toArray() Returns the most recent marshalled bean object as a String[] for csv and delimited formatted streams.
Document	toDocument() Returns the most recent marshalled bean object as a Document for xml formatted streams.
List<String>	toList() Returns the most recent marshalled bean object as a List for csv and delimited formatted streams.
String	toString() Returns the most recent marshalled bean object as a String.

Method Detail

marshal

Marshaller marshal(Object bean)
                   throws BeanWriterException

Marshals a single bean object.

Parameters:

bean - the bean object to marshal

Returns:

this Marshaller

Throws:

BeanWriterException - if a record is not matched for the given bean object, or in some other rare (but fatal) conditions

marshal

Marshaller marshal(String recordName,
                   Object bean)
                   throws BeanWriterException

Marshals a single bean object.

Parameters:

recordName - the name of the record to marshal

bean - the bean object to marshal

Returns:

this Marshaller

Throws:

BeanWriterException - if a record is not matched for the given record name and bean object, or in some other rare (but fatal) conditions

toString

String toString()
                throws BeanWriterException

Returns the most recent marshalled bean object as a String. This method is supported by all stream formats.

Overrides:

toString in class Object

Returns:

the record text

Throws:

BeanWriterException - if a fatal error occurs

toArray

String[] toArray()
                 throws BeanWriterException

Returns the most recent marshalled bean object as a String[] for csv and delimited formatted streams.

Returns:

the String array of fields

Throws:

BeanWriterException - if an array is not supported by the stream format

toList

List<String> toList()
                    throws BeanWriterException

Returns the most recent marshalled bean object as a List for csv and delimited formatted streams.

Returns:

the List of fields

Throws:

BeanWriterException - if an array is not supported by the stream format

toDocument

Document toDocument()
                    throws BeanWriterException

Returns the most recent marshalled bean object as a Document for xml formatted streams.

Returns:

the Document

Throws:

BeanWriterException - if Document is not supported by the stream format