Конспект(слайды) лекций (4 сем)

Listener	event
	handlers
	delegation

Source

•Java API for XML Processing (JAXP) –

XML ,

•Java Architecture for XML Binding (JAXB) –

XML

Java

•Java API for XML Messaging (JAXM) –

SOAP (Simple Object Access Protocol) Internet

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•Java API for XML Registries (JAXR) –

•Java API for XML-based RPC (JAX-RPC) –

SOAP

Internet

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SAXParserFactory factory =

SAXParserFactory.newInstance( );

SAXParser saxParser = factory.newSAXParser(); saxParser.parse( "priceList.xml" , handler);

1

3 / / 4 1

public void startElement(..., String elementName,...)

{

if(elementName.equals("name" )){

inName = true;

} else if(elementName.equals("price" ) && inMochaJava) {

inPrice = true; inName = false;

}

}

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import org.apache.xerces.parsers.*;

import org.xml.sax.*; // Xerces DOM runs on top of SAX import org.w3c.dom.*;

public class SomeClass {

…

DOMParser parser = new DOMParser();

…

}

3 / / 4 1

public void characters(char [] buf, int offset, int len) {

String s = new String(buf, offset, len); if (inName && s.equals("Mocha Java")) {

inMochaJava = true; inName = false;

} else if (inPrice) {

System.out.println("The price is: " + s); inMochaJava = false; inPrice = false;

}

}

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NodeList list = document.getElementsByTagName("name" );

Node thisNode = list.item(0); // loop through list Node thisChild = thisNode.getChildNode(); if(thisNode.getFirstChild() instanceof org.w3c.dom.TextNode){

String data = thisNode.getFirstChild().getData();

}

if (data. equals("Mocha Java")) {

// Mocha Java

Node newNode = document.createElement("coffee");

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22.05.2007

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Node nameNode = document.createElement("name"); TextNode textNode = document.createTextNode("Kona"); nameNode.appendChild(textNode);

Node priceNode = document.createElement("price");

TextNode tpNode = document.createTextNode("13.50");

priceNode.appendChild(tpNode);

newNode.appendChild(nameNode);

newNode.appendChild(priceNode);

thisNode.InsertBefore(newNode, thisNode);

h ] 1 S J

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<orders-list>

<order>

<number>1001</number> <date>2005-01-01</date> <description>First Order</description> <amount>10</amount>

</order>

<order>

<number>1002</number> <date>2005-01-02</date> <description>Second Order</description> <amount>20.2</amount>

</order>

</orders-list>

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<xsd:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"> <xsd:element name="orders-list">

<xsd:complexType>

<xsd:sequence>

<xsd:element ref="order" maxOccurs="unbounded"/> </xsd:sequence>

</xsd:complexType>

</xsd:element>

<xsd:element name="order"> <xsd:complexType>

<xsd:sequence>

<xsd:element name="number" type="xsd:long"/> <xsd:element name="date" type="xsd:date"/> <xsd:element name="description" type="xsd:string"/> <xsd:element name="amount" type="xsd:double"/>

</xsd:sequence>

</xsd:complexType>

</xsd:element>

</xsd:schema>

22.05.2007

M i 1

OrdersListType.java

public interface OrdersListType {

java.util.List getOrder();

}

OrderType.java public interface OrderType {

double getAmount();

void setAmount(double value);

java.lang.String getDescription();

void setDescription(java.lang.String value);

java.util.Calendar getDate();

void setDate(java.util.Calendar value);

long getNumber();

void setNumber(long value);

}

M / J

XML

JAXBContext jaxbCtx = JAXBContext.newInstance("generated");

Unmarshaller unmarshaller = jaxbCtx.createUnmarshaller();

OrdersListType orders

= (OrdersListType)unmarshaller.unmarshal( new File("simple-order.xml"));

List ordersList = orders.getOrder();

for (int i = 0; i < ordersList.size(); i++) { OrderType order = (OrderType)ordersList.get(i);

System.out.println("Number = " + order.getNumber() + ", amount = " + order.getAmount());

}

...

M / J

XML

...

ObjectFactory objectFactory = new ObjectFactory();

Order newOrder = objectFactory.createOrder(); newOrder.setNumber(2006); newOrder.setDate(Calendar.getInstance()); newOrder.setDescription("New Order"); newOrder.setAmount(100);

orders.getOrder().add(newOrder);

Marshaller marshaller = jaxbCtx.createMarshaller(); marshaller.marshal(orders,

new FileOutputStream(new File("simple-order.xml")));

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javax.xml.bind.JAXBContext - " " JAXB API

public abstract class JAXBContext {

static JAXBContext newInstance(String contextPath) static JAXBContext newInstance(String contextPath,

ClassLoader contextPathCL)

abstract Unmarshaller createUnmarshaller(); abstract Marshaller createMarshaller(); abstract Validator createValidator();

}

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Validator

public interface Validator {

ValidationEventHandler getEventHandler()

void setEventHandler(ValidationEventHandler handler)

boolean validate(java.lang.Object subrootObject) boolean validateRoot(java.lang.Object rootObject)

}

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Unmarshaller XML ,

!

public interface Unmarshaller {

boolean isValidating() throws JAXBException;

void setValidating(boolean b) throws JAXBException;

ValidationEventHandler getEventHandler() throws JAXBException;

void setEventHandler(ValidationEventHandler handler) throws JAXBException;

Object unmarshal(File file) throws JAXBException; Object unmarshal(InputStream is) throws JAXBException; Object unmarshal(URL url) throws JAXBException; Object unmarshal(Source source) throws JAXBException; Object unmarshal(Node node) throws JAXBException; Object unmarshal(InputSource is) throws JAXBException;

}

22.05.2007

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Marshaller ! XML

public interface Marshaller {

ValidationEventHandler getEventHandler() throws JAXBException; void setEventHandler(ValidationEventHandler handler)

throws JAXBException;

void marshal(Object o, OutputStream os) throws JAXBException; void marshal(Object o, Writer writer) throws JAXBException; void marshal(Object o, Result result) throws JAXBException; void marshal(Object o, Node node) throws JAXBException;

void marshal(Object o, ContentHandler ch) throws JAXBException; Node getNode(Object o) throws JAXBException;

Object getProperty(String s) throws PropertyException;

void setProperty(String s, Object o) throws PropertyException;

String JAXB_ENCODING = "jaxb.encoding";

String JAXB_FORMATTED_OUTPUT = "jaxb.formatted.output";

}

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5 ] 2 . ]

" XML Java

<xsd:complexType name="personType"> <xsd:sequence>

<xsd:element name="name" type="xsd:string"/> <xsd:element name="departmentId" type="xsd:long"/>

</xsd:sequence>

<xsd:attribute name="id" type="xsd:long"/> </xsd:complexType>

public interface PersonType

{

long getDepartmentId();

void setDepartmentId(long value); java.lang.String getName();

void setName(java.lang.String value); long getId();

void setId(long value);

}

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#$ XML Java

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<xsd:element name="name" type="xsd:string"/>

java.lang.String getName();

void setName(java.lang.String value);

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<xsd:element name="item" type="xsd:string" maxOccurs="unbounded"/>

java.util.List getItem();

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<xsd:simpleType name="countryType">

<xsd:restriction base="xsd:NCName">

<xsd:enumeration value="FRANCE"/>

<xsd:enumeration value="SWITZERLAND"/>

</xsd:restriction>

</xsd:simpleType>

public class CountryType { private final String value;

protected CountryType(String v) { value = v; } public final static CountryType FRANCE

= new CountryType("FRANCE");

public final static CountryType SWITZERLAND

= new generated.CountryType("SWITZERLAND");

...

}

5 ] 2 . ]

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XML	Java
xsd:string	java.lang.String
xsd:integer	java.math.BigInteger
xsd:int	int
xsd:long	long
xsd:decimal	java.math.BigDecimal
xsd:float	float
xsd:double	double
xsd:boolean	boolean
xsd:byte	byte
xsd:dateTime	java.util.Calendar
xsd:anySimpleType	java.lang.String

22.05.2007

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<xsd:complexType name="Address"> <xsd:sequence>

<xsd:element name="name" type="xsd:string"/> <xsd:element name="street" type="xsd:string"/> <xsd:element name="city" type="xsd:string"/>

</xsd:sequence>

</xsd:complexType> <xsd:complexType name="USAddress">

<xsd:complexContent> <xsd:extension base="Address">

<xsd:sequence>

<xsd:element name="state" type="xsd:string"/> <xsd:element name="zip" type="xsd:integer"/>

</xsd:sequence>

</xsd:extension>

</xsd:complexContent>

</xsd:complexType>

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		public interface Address			•	R&N4,',:P &>S)5:%() *+)4$:,'2)%.; 4,%%(J 8			. 1S
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		java.lang.String	getCity();
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		java.lang.String	getStreet();
		void setStreet(java.lang.String value);
		java.lang.String	getName();		JAXP $ :
		void setName(java.lang.String value);
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}
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		public interface USAddress extends Address
{						& XSLT
		java.lang.String	getState();
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		void setState(java.lang.String value);
		long getZip();
		void setZip(long value);
}

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<list>

<listElement id=“1” next=“2”/> <listElement id=“2” next=“3” prev=“1”/> <listElement id=“3” prev=“2”/>

</list>

<!ELEMENT list listElement* > <!ELEMENT listElement EMPTY> <!ATTLIST listElement

id ID #REQUIRED next ID #IMPLIED prev ID #IMPLIED >

22.05.2007

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<e t=“c”/>
		<xsl:value-of select=“name()”/>
</d>
		</xsl:attribute>
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		</xsl:element>
<d>		</xsl:for-each>
<a t=“e”/>		</xsl:template>
<b t=“e”/>		</xsl:stylesheet>
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