Unmarshaller (Java Platform SE 6)

       JAXBContext jc = JAXBContext.newInstance( "com.acme.foo" );
       Unmarshaller u = jc.createUnmarshaller();
       Object o = u.unmarshal( new File( "nosferatu.xml" ) );

InputStream から非整列化します。

       InputStream is = new FileInputStream( "nosferatu.xml" );
       JAXBContext jc = JAXBContext.newInstance( "com.acme.foo" );
       Unmarshaller u = jc.createUnmarshaller();
       Object o = u.unmarshal( is );

URL から非整列化します。

       JAXBContext jc = JAXBContext.newInstance( "com.acme.foo" );
       Unmarshaller u = jc.createUnmarshaller();
       URL url = new URL( "http://beaker.east/nosferatu.xml" );
       Object o = u.unmarshal( url );

javax.xml.transform.stream.StreamSource を使用して StringBuffer から非整列化します。

       JAXBContext jc = JAXBContext.newInstance( "com.acme.foo" );
       Unmarshaller u = jc.createUnmarshaller();
       StringBuffer xmlStr = new StringBuffer( "<?xml version="1.0"?>..." );
       Object o = u.unmarshal( new StreamSource( new StringReader( xmlStr.toString() ) ) );

org.w3c.dom.Node から非整列化します。

       JAXBContext jc = JAXBContext.newInstance( "com.acme.foo" );
       Unmarshaller u = jc.createUnmarshaller();
 
       DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
       dbf.setNamespaceAware(true);
       DocumentBuilder db = dbf.newDocumentBuilder();
       Document doc = db.parse(new File( "nosferatu.xml"));

       Object o = u.unmarshal( doc );

クライアントが指定した検証 SAX2.0 パーサーを使用して javax.xml.transform.sax.SAXSource から非整列化します。

       // configure a validating SAX2.0 parser (Xerces2)
       static final String JAXP_SCHEMA_LANGUAGE =
           "http://java.sun.com/xml/jaxp/properties/schemaLanguage";
       static final String JAXP_SCHEMA_LOCATION =
           "http://java.sun.com/xml/jaxp/properties/schemaSource";
       static final String W3C_XML_SCHEMA =
           "http://www.w3.org/2001/XMLSchema";

       System.setProperty( "javax.xml.parsers.SAXParserFactory",
                           "org.apache.xerces.jaxp.SAXParserFactoryImpl" );

       SAXParserFactory spf = SAXParserFactory.newInstance();
       spf.setNamespaceAware(true);
       spf.setValidating(true);
       SAXParser saxParser = spf.newSAXParser();
       
       try {
           saxParser.setProperty(JAXP_SCHEMA_LANGUAGE, W3C_XML_SCHEMA);
           saxParser.setProperty(JAXP_SCHEMA_LOCATION, "http://....");
       } catch (SAXNotRecognizedException x) {
           // exception handling omitted
       }

       XMLReader xmlReader = saxParser.getXMLReader();
       SAXSource source = 
           new SAXSource( xmlReader, new InputSource( "http://..." ) );

       // Setup JAXB to unmarshal
       JAXBContext jc = JAXBContext.newInstance( "com.acme.foo" );
       Unmarshaller u = jc.createUnmarshaller();
       ValidationEventCollector vec = new ValidationEventCollector();
       u.setEventHandler( vec );
       
       // turn off the JAXB provider's default validation mechanism to 
       // avoid duplicate validation
       u.setValidating( false )

       // unmarshal
       Object o = u.unmarshal( source );

       // check for events
       if( vec.hasEvents() ) {
          // iterate over events
       }

StAX XMLStreamReader から非整列化します。

       JAXBContext jc = JAXBContext.newInstance( "com.acme.foo" );
       Unmarshaller u = jc.createUnmarshaller();
 
       javax.xml.stream.XMLStreamReader xmlStreamReader = 
           javax.xml.stream.XMLInputFactory().newInstance().createXMLStreamReader( ... );
 
       Object o = u.unmarshal( xmlStreamReader );

StAX XMLEventReader から非整列化します。

       JAXBContext jc = JAXBContext.newInstance( "com.acme.foo" );
       Unmarshaller u = jc.createUnmarshaller();
 
       javax.xml.stream.XMLEventReader xmlEventReader = 
           javax.xml.stream.XMLInputFactory().newInstance().createXMLEventReader( ... );
 
       Object o = u.unmarshal( xmlEventReader );

XML データの非整列化

非整列化では、XML 文書全体または XML 文書のサブツリーを表す XML データを直列化復元できます。通常は、「グローバルに宣言されたルート要素の非整列化」で説明されている非整列化メソッドを使用すれば十分です。これらの非整列化メソッドは、グローバル XML 要素宣言および型宣言から JAXB マップクラスへの JAXBContext のマッピングを利用して、XML データのルート要素の非整列化処理を初期化します。JAXBContext のマッピングが XML データのルート要素を非整列化するのに不十分である場合、アプリケーションは declaredType による非整列化メソッドを使用して非整列化プロセスを支援することができます。これらのメソッドは、ルート要素がスキーマのローカル要素宣言に対応する XML データを非整列化するときに役立ちます。

非整列化メソッドは null を返しません。非整列化プロセスが XML コンテンツのルートを JAXB マップオブジェクトのルートに非整列化できない場合、JAXBException をスローすることによって致命的なエラーが報告され、処理が中止されます。

グローバルに宣言されたルート要素の非整列化

declaredType パラメータを含まない非整列化メソッドは、JAXBContext を使用して XML データのルート要素を非整列化します。JAXBContext インスタンスは、この Unmarshaller の作成に使用されたインスタンスです。JAXBContext インスタンスは、グローバルに宣言された XML 要素および型定義名から JAXB マップクラスへのマッピングを保持しています。非整列化メソッドは、ルート要素の XML 名または @xsi:type、あるいはその両方から JAXB マップクラスへのマッピングが JAXBContext に含まれるかどうかをチェックします。これを含む場合、適切な JAXB マップクラスを使用して XML データを非整列化します。ルート要素名が不明で、ルート要素に @xsi:type が含まれる場合、JAXBElement の値として JAXB マップクラスを使用して XML データは非整列化されます。JAXBContext オブジェクトに、ルート要素の名前またはその @xsi:type (これが存在する場合) に対するマッピングが含まれない場合、非整列化操作は UnmarshalException をスローすることによって直ちに強制終了されます。次のサブセクションで説明する declaredType による非整列化を使用することによって、この例外シナリオを回避することができます。

宣言型による非整列化

The unmarshal methods with a declaredType parameter enable an application to deserialize a root element of XML data, even when there is no mapping in JAXBContext of the root element's XML name. The unmarshaller unmarshals the root element using the application provided mapping specified as the declaredType parameter. Note that even when the root element's element name is mapped by JAXBContext, the declaredType parameter overrides that mapping for deserializing the root element when using these unmarshal methods. Additionally, when the root element of XML data has an xsi:type attribute and that attribute's value references a type definition that is mapped to a JAXB mapped class by JAXBContext, that the root element's xsi:type attribute takes precedence over the unmarshal methods declaredType parameter. These methods always return a JAXBElement<declaredType> instance. The table below shows how the properties of the returned JAXBElement instance are set.

Unmarshal By Declared Type returned JAXBElement

JAXBElement Property Value

name xml element name

value instanceof declaredType

declaredType unmarshal method declaredType parameter

scope null (actual scope is unknown)

Unmarshal By Declared Type returned JAXBElement
value	`instanceof declaredType`
declaredType	unmarshal method `declaredType` parameter
scope	`null` (actual scope is unknown)

The following is an example of unmarshal by declaredType method.

Unmarshal by declaredType from a org.w3c.dom.Node:

       Schema fragment for example
       <xs:schema>
          <xs:complexType name="FooType">...<\xs:complexType>
          <!-- global element declaration "PurchaseOrder" -->
          <xs:element name="PurchaseOrder">
              <xs:complexType>
                 <xs:sequence>
                    <!-- local element declaration "foo" -->
                    <xs:element name="foo" type="FooType"/>
                    ...
                 </xs:sequence>
              </xs:complexType>
          </xs:element>
       </xs:schema>

       JAXBContext jc = JAXBContext.newInstance( "com.acme.foo" );
       Unmarshaller u = jc.createUnmarshaller();
 
       DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
       dbf.setNamespaceAware(true);
       DocumentBuilder db = dbf.newDocumentBuilder();
       Document doc = db.parse(new File( "nosferatu.xml"));
       Element  fooSubtree = ...; // traverse DOM till reach xml element foo, constrained by a 
                                  // local element declaration in schema.
 
       // FooType is the JAXB mapping of the type of local element declaration foo.
       JAXBElement<FooType> foo = u.unmarshal( fooSubtree, FooType.class);

Support for SAX2.0 Compliant Parsers

A client application has the ability to select the SAX2.0 compliant parser of their choice. If a SAX parser is not selected, then the JAXB Provider's default parser will be used. Even though the JAXB Provider's default parser is not required to be SAX2.0 compliant, all providers are required to allow a client application to specify their own SAX2.0 parser. Some providers may require the client application to specify the SAX2.0 parser at schema compile time. See unmarshal(Source) for more detail.

Validation and Well-Formedness

A client application can enable or disable JAXP 1.3 validation mechanism via the setSchema(javax.xml.validation.Schema) API. Sophisticated clients can specify their own validating SAX 2.0 compliant parser and bypass the JAXP 1.3 validation mechanism using the unmarshal(Source) API.
Since unmarshalling invalid XML content is defined in JAXB 2.0, the Unmarshaller default validation event handler was made more lenient than in JAXB 1.0. When schema-derived code generated by JAXB 1.0 binding compiler is registered with JAXBContext, the default unmarshal validation handler is DefaultValidationEventHandler and it terminates the marshal operation after encountering either a fatal error or an error. For a JAXB 2.0 client application, there is no explicitly defined default validation handler and the default event handling only terminates the marshal operation after encountering a fatal error.

Supported Properties

There currently are not any properties required to be supported by all JAXB Providers on Unmarshaller. However, some providers may support their own set of provider specific properties.

Unmarshal Event Callbacks

The Unmarshaller provides two styles of callback mechanisms that allow application specific processing during key points in the unmarshalling process. In 'class defined' event callbacks, application specific code placed in JAXB mapped classes is triggered during unmarshalling. 'External listeners' allow for centralized processing of unmarshal events in one callback method rather than by type event callbacks.
'Class defined' event callback methods allow any JAXB mapped class to specify its own specific callback methods by defining methods with the following method signature:
   // This method is called immediately after the object is created and before the unmarshalling of this 
   // object begins. The callback provides an opportunity to initialize JavaBean properties prior to unmarshalling.
   void beforeUnmarshal(Unmarshaller, Object parent);
 
   //This method is called after all the properties (except IDREF) are unmarshalled for this object, 
   //but before this object is set to the parent object.
   void afterUnmarshal(Unmarshaller, Object parent);
 
The class defined callback methods should be used when the callback method requires access to non-public methods and/or fields of the class.
The external listener callback mechanism enables the registration of a Unmarshaller.Listener instance with an setListener(Listener). The external listener receives all callback events, allowing for more centralized processing than per class defined callback methods. The external listener receives events when unmarshalling proces is marshalling to a JAXB element or to JAXB mapped class.
The 'class defined' and external listener event callback methods are independent of each other, both can be called for one event. The invocation ordering when both listener callback methods exist is defined in Unmarshaller.Listener.beforeUnmarshal(Object, Object) and Unmarshaller.Listener.afterUnmarshal(Object, Object).
An event callback method throwing an exception terminates the current unmarshal process.

導入されたバージョン:: JAXB1.0
関連項目:: JAXBContext, Marshaller, Validator

入れ子のクラスの概要
`static class`	`Unmarshaller.Listener` `Unmarshaller` にこのクラスの実装のインスタンスを登録し、非整列化イベントを外部的に待機します。

メソッドの概要





<A extends XmlAdapter> 


A

getAdapter(Class<A> type)
Gets the adapter associated with the specified type.

AttachmentUnmarshaller getAttachmentUnmarshaller()

ValidationEventHandler getEventHandler()
Return the current event handler or the default event handler if one hasn't been set.

Unmarshaller.Listener getListener()

Object getProperty(String name)
Get the particular property in the underlying implementation of Unmarshaller.

Schema getSchema()
Get the JAXP 1.3 Schema object being used to perform unmarshal-time validation.

UnmarshallerHandler getUnmarshallerHandler()
Get an unmarshaller handler object that can be used as a component in an XML pipeline.

boolean isValidating()
推奨されていません。 since JAXB2.0, please see getSchema()





<A extends XmlAdapter> 


void

setAdapter(Class<A> type,
           A adapter)

Associates a configured instance of XmlAdapter with this unmarshaller.

void setAdapter(XmlAdapter adapter)
Associates a configured instance of XmlAdapter with this unmarshaller.

void setAttachmentUnmarshaller(AttachmentUnmarshaller au)

void setEventHandler(ValidationEventHandler handler)
Allow an application to register a ValidationEventHandler.

void setListener(Unmarshaller.Listener listener)
Register unmarshal event callback Unmarshaller.Listener with this Unmarshaller.

void setProperty(String name, Object value)
Set the particular property in the underlying implementation of Unmarshaller.

void setSchema(Schema schema)
Specify the JAXP 1.3 Schema object that should be used to validate subsequent unmarshal operations against.

void setValidating(boolean validating)
推奨されていません。 since JAXB2.0, please see setSchema(javax.xml.validation.Schema)

Object unmarshal(File f)
Unmarshal XML data from the specified file and return the resulting content tree.

Object unmarshal(InputSource source)
Unmarshal XML data from the specified SAX InputSource and return the resulting content tree.

Object unmarshal(InputStream is)
Unmarshal XML data from the specified InputStream and return the resulting content tree.

Object unmarshal(Node node)
Unmarshal global XML data from the specified DOM tree and return the resulting content tree.





<T> JAXBElement<T>

unmarshal(Node node,
          Class<T> declaredType)

Unmarshal XML data by JAXB mapped declaredType and return the resulting content tree.

Object unmarshal(Reader reader)
Unmarshal XML data from the specified Reader and return the resulting content tree.

Object unmarshal(Source source)
Unmarshal XML data from the specified XML Source and return the resulting content tree.





<T> JAXBElement<T>

unmarshal(Source source,
          Class<T> declaredType)

Unmarshal XML data from the specified XML Source by declaredType and return the resulting content tree.

Object unmarshal(URL url)
Unmarshal XML data from the specified URL and return the resulting content tree.

Object unmarshal(XMLEventReader reader)
Unmarshal XML data from the specified pull parser and return the resulting content tree.





<T> JAXBElement<T>

unmarshal(XMLEventReader reader,
          Class<T> declaredType)

Unmarshal root element to JAXB mapped declaredType and return the resulting content tree.

Object unmarshal(XMLStreamReader reader)
Unmarshal XML data from the specified pull parser and return the resulting content tree.





<T> JAXBElement<T>

unmarshal(XMLStreamReader reader,
          Class<T> declaredType)

Unmarshal root element to JAXB mapped declaredType and return the resulting content tree.

メソッドの詳細

unmarshal

Object unmarshal(File f)
                 throws JAXBException

Unmarshal XML data from the specified file and return the resulting content tree.

Implements Unmarshal Global Root Element.

パラメータ:: f - the file to unmarshal XML data from
戻り値:: the newly created root object of the java content tree
例外:: JAXBException - If any unexpected errors occur while unmarshalling; UnmarshalException - If the ValidationEventHandler returns false from its handleEvent method or the Unmarshaller is unable to perform the XML to Java binding. See Unmarshalling XML Data; IllegalArgumentException - If the file parameter is null

unmarshal

Object unmarshal(InputStream is)
                 throws JAXBException

Unmarshal XML data from the specified InputStream and return the resulting content tree. Validation event location information may be incomplete when using this form of the unmarshal API.

Implements Unmarshal Global Root Element.

パラメータ:: is - the InputStream to unmarshal XML data from
戻り値:: the newly created root object of the java content tree
例外:: JAXBException - If any unexpected errors occur while unmarshalling; UnmarshalException - If the ValidationEventHandler returns false from its handleEvent method or the Unmarshaller is unable to perform the XML to Java binding. See Unmarshalling XML Data; IllegalArgumentException - If the InputStream parameter is null

unmarshal

Object unmarshal(Reader reader)
                 throws JAXBException

Unmarshal XML data from the specified Reader and return the resulting content tree. Validation event location information may be incomplete when using this form of the unmarshal API, because a Reader does not provide the system ID.

Implements Unmarshal Global Root Element.

パラメータ:: reader - the Reader to unmarshal XML data from
戻り値:: the newly created root object of the java content tree
例外:: JAXBException - If any unexpected errors occur while unmarshalling; UnmarshalException - If the ValidationEventHandler returns false from its handleEvent method or the Unmarshaller is unable to perform the XML to Java binding. See Unmarshalling XML Data; IllegalArgumentException - If the InputStream parameter is null
導入されたバージョン:: JAXB2.0

unmarshal

Object unmarshal(URL url)
                 throws JAXBException

Unmarshal XML data from the specified URL and return the resulting content tree.

Implements Unmarshal Global Root Element.

パラメータ:: url - the url to unmarshal XML data from
戻り値:: the newly created root object of the java content tree
例外:: JAXBException - If any unexpected errors occur while unmarshalling; UnmarshalException - If the ValidationEventHandler returns false from its handleEvent method or the Unmarshaller is unable to perform the XML to Java binding. See Unmarshalling XML Data; IllegalArgumentException - If the URL parameter is null

unmarshal

Object unmarshal(InputSource source)
                 throws JAXBException

Unmarshal XML data from the specified SAX InputSource and return the resulting content tree.

Implements Unmarshal Global Root Element.

パラメータ:: source - the input source to unmarshal XML data from
戻り値:: the newly created root object of the java content tree
例外:: JAXBException - If any unexpected errors occur while unmarshalling; UnmarshalException - If the ValidationEventHandler returns false from its handleEvent method or the Unmarshaller is unable to perform the XML to Java binding. See Unmarshalling XML Data; IllegalArgumentException - If the InputSource parameter is null

unmarshal

Object unmarshal(Node node)
                 throws JAXBException

Unmarshal global XML data from the specified DOM tree and return the resulting content tree.

Implements Unmarshal Global Root Element.

パラメータ:: node - the document/element to unmarshal XML data from. The caller must support at least Document and Element.
戻り値:: the newly created root object of the java content tree
例外:: JAXBException - If any unexpected errors occur while unmarshalling; UnmarshalException - If the ValidationEventHandler returns false from its handleEvent method or the Unmarshaller is unable to perform the XML to Java binding. See Unmarshalling XML Data; IllegalArgumentException - If the Node parameter is null
関連項目:: unmarshal(org.w3c.dom.Node, Class)

unmarshal

<T> JAXBElement<T> unmarshal(Node node,
                             Class<T> declaredType)
                         throws JAXBException

Unmarshal XML data by JAXB mapped declaredType and return the resulting content tree.

Implements Unmarshal by Declared Type

パラメータ:: node - the document/element to unmarshal XML data from. The caller must support at least Document and Element.; declaredType - appropriate JAXB mapped class to hold node's XML data.
戻り値:: JAXB Element representation of node
例外:: JAXBException - If any unexpected errors occur while unmarshalling; UnmarshalException - If the ValidationEventHandler returns false from its handleEvent method or the Unmarshaller is unable to perform the XML to Java binding. See Unmarshalling XML Data; IllegalArgumentException - If any parameter is null
導入されたバージョン:: JAXB2.0

unmarshal

Object unmarshal(Source source)
                 throws JAXBException

Unmarshal XML data from the specified XML Source and return the resulting content tree.

Implements Unmarshal Global Root Element.

SAX 2.0 Parser Pluggability

A client application can choose not to use the default parser mechanism supplied with their JAXB provider. Any SAX 2.0 compliant parser can be substituted for the JAXB provider's default mechanism. To do so, the client application must properly configure a SAXSource containing an XMLReader implemented by the SAX 2.0 parser provider. If the XMLReader has an org.xml.sax.ErrorHandler registered on it, it will be replaced by the JAXB Provider so that validation errors can be reported via the ValidationEventHandler mechanism of JAXB. If the SAXSource does not contain an XMLReader, then the JAXB provider's default parser mechanism will be used.

This parser replacement mechanism can also be used to replace the JAXB provider's unmarshal-time validation engine. The client application must properly configure their SAX 2.0 compliant parser to perform validation (as shown in the example above). Any SAXParserExceptions encountered by the parser during the unmarshal operation will be processed by the JAXB provider and converted into JAXB ValidationEvent objects which will be reported back to the client via the ValidationEventHandler registered with the Unmarshaller. Note: specifying a substitute validating SAX 2.0 parser for unmarshalling does not necessarily replace the validation engine used by the JAXB provider for performing on-demand validation.

The only way for a client application to specify an alternate parser mechanism to be used during unmarshal is via the unmarshal(SAXSource) API. All other forms of the unmarshal method (File, URL, Node, etc) will use the JAXB provider's default parser and validator mechanisms.

パラメータ:: source - the XML Source to unmarshal XML data from (providers are only required to support SAXSource, DOMSource, and StreamSource)
戻り値:: the newly created root object of the java content tree
例外:: JAXBException - If any unexpected errors occur while unmarshalling; UnmarshalException - If the ValidationEventHandler returns false from its handleEvent method or the Unmarshaller is unable to perform the XML to Java binding. See Unmarshalling XML Data; IllegalArgumentException - If the Source parameter is null
関連項目:: unmarshal(javax.xml.transform.Source, Class)

unmarshal

<T> JAXBElement<T> unmarshal(Source source,
                             Class<T> declaredType)
                         throws JAXBException

Unmarshal XML data from the specified XML Source by declaredType and return the resulting content tree.

Implements Unmarshal by Declared Type

See SAX 2.0 Parser Pluggability

パラメータ:: source - the XML Source to unmarshal XML data from (providers are only required to support SAXSource, DOMSource, and StreamSource); declaredType - appropriate JAXB mapped class to hold source's xml root element
戻り値:: Java content rooted by JAXB Element
例外:: JAXBException - If any unexpected errors occur while unmarshalling; UnmarshalException - If the ValidationEventHandler returns false from its handleEvent method or the Unmarshaller is unable to perform the XML to Java binding. See Unmarshalling XML Data; IllegalArgumentException - If any parameter is null
導入されたバージョン:: JAXB2.0

unmarshal

Object unmarshal(XMLStreamReader reader)
                 throws JAXBException

Unmarshal XML data from the specified pull parser and return the resulting content tree.

Implements Unmarshal Global Root Element.

This method assumes that the parser is on a START_DOCUMENT or START_ELEMENT event. Unmarshalling will be done from this start event to the corresponding end event. If this method returns successfully, the reader will be pointing at the token right after the end event.

パラメータ:: reader - The parser to be read.
戻り値:: the newly created root object of the java content tree.
例外:: JAXBException - If any unexpected errors occur while unmarshalling; UnmarshalException - If the ValidationEventHandler returns false from its handleEvent method or the Unmarshaller is unable to perform the XML to Java binding. See Unmarshalling XML Data; IllegalArgumentException - If the reader parameter is null; IllegalStateException - If reader is not pointing to a START_DOCUMENT or START_ELEMENT event.
導入されたバージョン:: JAXB2.0
関連項目:: unmarshal(javax.xml.stream.XMLStreamReader, Class)

unmarshal

<T> JAXBElement<T> unmarshal(XMLStreamReader reader,
                             Class<T> declaredType)
                         throws JAXBException

Unmarshal root element to JAXB mapped declaredType and return the resulting content tree.

This method implements unmarshal by declaredType.

パラメータ:: reader - The parser to be read.; declaredType - appropriate JAXB mapped class to hold reader's START_ELEMENT XML data.
戻り値:: content tree rooted by JAXB Element representation
例外:: JAXBException - If any unexpected errors occur while unmarshalling; UnmarshalException - If the ValidationEventHandler returns false from its handleEvent method or the Unmarshaller is unable to perform the XML to Java binding. See Unmarshalling XML Data; IllegalArgumentException - If any parameter is null
導入されたバージョン:: JAXB2.0

unmarshal

Object unmarshal(XMLEventReader reader)
                 throws JAXBException

Unmarshal XML data from the specified pull parser and return the resulting content tree.

This method is an Unmarshal Global Root method.

パラメータ:: reader - The parser to be read.
戻り値:: the newly created root object of the java content tree.
例外:: JAXBException - If any unexpected errors occur while unmarshalling; UnmarshalException - If the ValidationEventHandler returns false from its handleEvent method or the Unmarshaller is unable to perform the XML to Java binding. See Unmarshalling XML Data; IllegalArgumentException - If the reader parameter is null; IllegalStateException - If reader is not pointing to a START_DOCUMENT or START_ELEMENT event.
導入されたバージョン:: JAXB2.0
関連項目:: unmarshal(javax.xml.stream.XMLEventReader, Class)

unmarshal

<T> JAXBElement<T> unmarshal(XMLEventReader reader,
                             Class<T> declaredType)
                         throws JAXBException

Unmarshal root element to JAXB mapped declaredType and return the resulting content tree.

This method implements unmarshal by declaredType.

パラメータ:: reader - The parser to be read.; declaredType - appropriate JAXB mapped class to hold reader's START_ELEMENT XML data.
戻り値:: content tree rooted by JAXB Element representation
例外:: JAXBException - If any unexpected errors occur while unmarshalling; UnmarshalException - If the ValidationEventHandler returns false from its handleEvent method or the Unmarshaller is unable to perform the XML to Java binding. See Unmarshalling XML Data; IllegalArgumentException - If any parameter is null
導入されたバージョン:: JAXB2.0

getUnmarshallerHandler

UnmarshallerHandler getUnmarshallerHandler()

Get an unmarshaller handler object that can be used as a component in an XML pipeline.

The JAXB Provider can return the same handler object for multiple invocations of this method. In other words, this method does not necessarily create a new instance of UnmarshallerHandler. If the application needs to use more than one UnmarshallerHandler, it should create more than one Unmarshaller.

戻り値:: the unmarshaller handler object
関連項目:: UnmarshallerHandler

setValidating

void setValidating(boolean validating)
                   throws JAXBException

推奨されていません。 since JAXB2.0, please see setSchema(javax.xml.validation.Schema)

Specifies whether or not the default validation mechanism of the Unmarshaller should validate during unmarshal operations. By default, the Unmarshaller does not validate.

This method may only be invoked before or after calling one of the unmarshal methods.

This method only controls the JAXB Provider's default unmarshal-time validation mechanism - it has no impact on clients that specify their own validating SAX 2.0 compliant parser. Clients that specify their own unmarshal-time validation mechanism may wish to turn off the JAXB Provider's default validation mechanism via this API to avoid "double validation".

This method is deprecated as of JAXB 2.0 - please use the new setSchema(javax.xml.validation.Schema) API.

パラメータ:: validating - true if the Unmarshaller should validate during unmarshal, false otherwise
例外:: JAXBException - if an error occurred while enabling or disabling validation at unmarshal time; UnsupportedOperationException - could be thrown if this method is invoked on an Unmarshaller created from a JAXBContext referencing JAXB 2.0 mapped classes

isValidating

boolean isValidating()
                     throws JAXBException

推奨されていません。 since JAXB2.0, please see getSchema()

Indicates whether or not the Unmarshaller is configured to validate during unmarshal operations.

This API returns the state of the JAXB Provider's default unmarshal-time validation mechanism.

This method is deprecated as of JAXB 2.0 - please use the new getSchema() API.

戻り値:: true if the Unmarshaller is configured to validate during unmarshal operations, false otherwise
例外:: JAXBException - if an error occurs while retrieving the validating flag; UnsupportedOperationException - could be thrown if this method is invoked on an Unmarshaller created from a JAXBContext referencing JAXB 2.0 mapped classes

setEventHandler

void setEventHandler(ValidationEventHandler handler)
                     throws JAXBException

Allow an application to register a ValidationEventHandler.

The ValidationEventHandler will be called by the JAXB Provider if any validation errors are encountered during calls to any of the unmarshal methods. If the client application does not register a ValidationEventHandler before invoking the unmarshal methods, then ValidationEvents will be handled by the default event handler which will terminate the unmarshal operation after the first error or fatal error is encountered.

Calling this method with a null parameter will cause the Unmarshaller to revert back to the default event handler.

パラメータ:: handler - the validation event handler
例外:: JAXBException - if an error was encountered while setting the event handler

getEventHandler

ValidationEventHandler getEventHandler()
                                       throws JAXBException

Return the current event handler or the default event handler if one hasn't been set.

戻り値:: the current ValidationEventHandler or the default event handler if it hasn't been set
例外:: JAXBException - if an error was encountered while getting the current event handler

setProperty

void setProperty(String name,
                 Object value)
                 throws PropertyException

Set the particular property in the underlying implementation of Unmarshaller. This method can only be used to set one of the standard JAXB defined properties above or a provider specific property. Attempting to set an undefined property will result in a PropertyException being thrown. See Supported Properties.

パラメータ:: name - the name of the property to be set. This value can either be specified using one of the constant fields or a user supplied string.; value - the value of the property to be set
例外:: PropertyException - when there is an error processing the given property or value; IllegalArgumentException - If the name parameter is null

getProperty

Object getProperty(String name)
                   throws PropertyException

Get the particular property in the underlying implementation of Unmarshaller. This method can only be used to get one of the standard JAXB defined properties above or a provider specific property. Attempting to get an undefined property will result in a PropertyException being thrown. See Supported Properties.

パラメータ:: name - the name of the property to retrieve
戻り値:: the value of the requested property
例外:: PropertyException - when there is an error retrieving the given property or value property name; IllegalArgumentException - If the name parameter is null

setSchema

void setSchema(Schema schema)

Specify the JAXP 1.3 Schema object that should be used to validate subsequent unmarshal operations against. Passing null into this method will disable validation.

This method replaces the deprecated setValidating(boolean) API.

Initially this property is set to null.

パラメータ:: schema - Schema object to validate unmarshal operations against or null to disable validation
例外:: UnsupportedOperationException - could be thrown if this method is invoked on an Unmarshaller created from a JAXBContext referencing JAXB 1.0 mapped classes
導入されたバージョン:: JAXB2.0

getSchema

Schema getSchema()

Get the JAXP 1.3 Schema object being used to perform unmarshal-time validation. If there is no Schema set on the unmarshaller, then this method will return null indicating that unmarshal-time validation will not be performed.

This method provides replacement functionality for the deprecated isValidating() API as well as access to the Schema object. To determine if the Unmarshaller has validation enabled, simply test the return type for null:

boolean isValidating = u.getSchema()!=null;

戻り値:: the Schema object being used to perform unmarshal-time validation or null if not present
例外:: UnsupportedOperationException - could be thrown if this method is invoked on an Unmarshaller created from a JAXBContext referencing JAXB 1.0 mapped classes
導入されたバージョン:: JAXB2.0

setAdapter

void setAdapter(XmlAdapter adapter)

Associates a configured instance of XmlAdapter with this unmarshaller.

This is a convenience method that invokes setAdapter(adapter.getClass(),adapter);.

例外:: IllegalArgumentException - if the adapter parameter is null.; UnsupportedOperationException - if invoked agains a JAXB 1.0 implementation.
導入されたバージョン:: JAXB2.0
関連項目:: setAdapter(Class,XmlAdapter)

setAdapter

<A extends XmlAdapter> void setAdapter(Class<A> type,
                                       A adapter)

Associates a configured instance of XmlAdapter with this unmarshaller.

Every unmarshaller internally maintains a Map<Class,XmlAdapter>, which it uses for unmarshalling classes whose fields/methods are annotated with XmlJavaTypeAdapter.

This method allows applications to use a configured instance of XmlAdapter. When an instance of an adapter is not given, an unmarshaller will create one by invoking its default constructor.

パラメータ:: type - The type of the adapter. The specified instance will be used when XmlJavaTypeAdapter.value() refers to this type.; adapter - The instance of the adapter to be used. If null, it will un-register the current adapter set for this type.
例外:: IllegalArgumentException - if the type parameter is null.; UnsupportedOperationException - if invoked agains a JAXB 1.0 implementation.
導入されたバージョン:: JAXB2.0

getAdapter

<A extends XmlAdapter> A getAdapter(Class<A> type)

Gets the adapter associated with the specified type. This is the reverse operation of the setAdapter(javax.xml.bind.annotation.adapters.XmlAdapter) method.

例外:: IllegalArgumentException - if the type parameter is null.; UnsupportedOperationException - if invoked agains a JAXB 1.0 implementation.
導入されたバージョン:: JAXB2.0

setAttachmentUnmarshaller

void setAttachmentUnmarshaller(AttachmentUnmarshaller au)

Associate a context that resolves cid's, content-id URIs, to binary data passed as attachments.

Unmarshal time validation, enabled via setSchema(Schema), must be supported even when unmarshaller is performing XOP processing.

例外:: IllegalStateException - if attempt to concurrently call this method during a unmarshal operation.

getAttachmentUnmarshaller

AttachmentUnmarshaller getAttachmentUnmarshaller()

setListener

void setListener(Unmarshaller.Listener listener)

There is only one Listener per Unmarshaller. Setting a Listener replaces the previous set Listener. One can unregister current Listener by setting listener to null.

パラメータ:: listener - provides unmarshal event callbacks for this Unmarshaller
導入されたバージョン:: JAXB2.0

getListener

Unmarshaller.Listener getListener()

Return Unmarshaller.Listener registered with this Unmarshaller.

戻り値:: registered Unmarshaller.Listener or null if no Listener is registered with this Unmarshaller.
導入されたバージョン:: JAXB2.0

概要

パッケージ

クラス

使用

階層ツリー

非推奨 API

索引

ヘルプ

Java^TM Platform
Standard Ed. 6

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Unmarshal By Declared Type returned JAXBElement
JAXBElement Property	Value
name	`xml element name`
value	`instanceof declaredType`
declaredType	unmarshal method `declaredType` parameter
scope	`null` (actual scope is unknown)

javax.xml.bind インタフェース Unmarshaller

unmarshal

unmarshal

unmarshal

unmarshal

unmarshal

unmarshal

unmarshal

unmarshal

unmarshal

unmarshal

unmarshal

unmarshal

unmarshal

getUnmarshallerHandler

setValidating

isValidating

setEventHandler

getEventHandler

setProperty

getProperty

setSchema

getSchema

setAdapter

setAdapter

getAdapter

setAttachmentUnmarshaller

getAttachmentUnmarshaller

setListener

getListener

javax.xml.bind
インタフェース Unmarshaller