Apache sdo学习笔记（二）——通过Shema创建DataObject对象

1：schema文件po.xsd

<?xml version="1.0" encoding="UTF-8"?><xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"    xmlns="http://www.example.com/PO" targetNamespace="http://www.example.com/PO">    <xsd:element name="purchaseOrder" type="PurchaseOrderType"/>    <xsd:element name="comment" type="xsd:string"/>    <xsd:complexType name="PurchaseOrderType">        <xsd:sequence>            <xsd:element name="shipTo" type="USAddress"/>            <xsd:element name="billTo" type="USAddress"/>            <xsd:element ref="comment" minOccurs="0"/>            <xsd:element name="items"  type="Items"/>        </xsd:sequence>        <xsd:attribute name="orderDate" type="xsd:date"/>    </xsd:complexType>    <xsd:complexType name="USAddress">        <xsd:sequence>            <xsd:element name="name"   type="xsd:string"/>            <xsd:element name="street" type="xsd:string"/>            <xsd:element name="city"   type="xsd:string"/>            <xsd:element name="state"  type="xsd:string"/>            <xsd:element name="zip"    type="xsd:decimal"/>        </xsd:sequence>        <xsd:attribute name="country" type="xsd:NMTOKEN" fixed="US"/>    </xsd:complexType>    <xsd:complexType name="Items">        <xsd:sequence>            <xsd:element name="item" minOccurs="0" maxOccurs="unbounded">                <xsd:complexType>                    <xsd:sequence>                        <xsd:element name="productName" type="xsd:string"/>                        <xsd:element name="price"  type="xsd:decimal"/>                        <xsd:element name="quantity">                            <xsd:simpleType>                                <xsd:restriction base="xsd:positiveInteger">                                    <xsd:maxExclusive value="100"/>                                </xsd:restriction>                            </xsd:simpleType>                        </xsd:element>                        <xsd:element ref="comment"   minOccurs="0"/>                        <xsd:element name="shipDate" type="xsd:date" minOccurs="0"/>                    </xsd:sequence>                    <xsd:attribute name="partNum" type="SKU" use="required"/>                </xsd:complexType>            </xsd:element>        </xsd:sequence>    </xsd:complexType>        <xsd:simpleType name="SKU">        <xsd:restriction base="xsd:string">            <xsd:pattern value="\d{3}-[A-Z]{2}"/>        </xsd:restriction>    </xsd:simpleType>     </xsd:schema>

2:java代码

package com.waysoft.intergration.dao;import java.io.File;import java.io.IOException;import java.io.InputStream;import java.net.URL;import org.apache.tuscany.sdo.api.SDOUtil;import commonj.sdo.DataObject;import commonj.sdo.helper.HelperContext;import commonj.sdo.helper.XSDHelper;public class Test1 {/** * @param args */public static void main(String[] args) {try {// create HelperContextHelperContext scope = SDOUtil.createHelperContext();// load .xsd documentloadTypesFromXMLSchemaFile(scope, Test1.class.getResource("/").getPath().substring(1)+"po.xsd");// create DataObjectDataObject po = scope.getDataFactory().create("http://www.example.com/PO","PurchaseOrderType");// 设置属性值po.setString("orderDate", "2010-07-07");DataObject shipTo = po.createDataObject("shipTo");             // 设置属性值shipTo.setString("country", "中国");            // 设置简易子元素的值 [与设置属性值的方式相同,二者的区别由类型决定]shipTo.setString("name", "张三");shipTo.setString("street", "东岳大街");shipTo.setString("city", "泰安市");shipTo.setString("state", "山东省");shipTo.setString("zip", "27100");DataObject billTo = po.createDataObject("billTo");billTo.setString("country", "中国");billTo.setString("name", "李四");billTo.setString("street", "长乐街");billTo.setString("city", "杭州");billTo.setString("state", "浙江省");billTo.setString("zip", "310000");po.set("comment", "This is a test comment.");DataObject items = po.createDataObject("items");DataObject item1 = items.createDataObject("item");item1.setString("partNum", "123-AB");item1.setString("productName", "apple");item1.setString("price","1.2");item1.setString("quantity", "12");item1.setString("comment", "empty comment.");item1.setString("shipDate", "2010-06-30");DataObject item2 = items.createDataObject("item");item2.setString("partNum", "456-CD");item2.setString("productName", "pear");item2.setString("price","2.1");item2.setString("quantity", "21");item2.set("comment", "empty comment.");// -- savescope.getXMLHelper().save(po, "http://www.example.com/PO", "purchaseOrder",System.out);} catch(Exception e){e.printStackTrace();}}public static void loadTypesFromXMLSchemaFile(HelperContext helperContext,String filename)throws IOException{XSDHelper xsdHelper = helperContext.getXSDHelper();InputStream in = null;try {URL url = new File(filename).toURI().toURL();in = url.openStream();xsdHelper.define(in, url.toString());} catch (IOException e){System.err.print("[错误]:");System.out.println("无法加载 " + filename + " .");throw e;} finally {try { if (in != null) in.close();} catch (Exception e){}}}}

3：运行结果

<?xml version="1.0" encoding="UTF-8"?><po:purchaseOrder xmlns:po="http://www.example.com/PO" orderDate="2010-07-07">  <shipTo country="中国">    <name>张三</name>    <street>东岳大街</street>    <city>泰安市</city>    <state>山东省</state>    <zip>27100</zip>  </shipTo>  <billTo country="中国">    <name>李四</name>    <street>长乐街</street>    <city>杭州</city>    <state>浙江省</state>    <zip>310000</zip>  </billTo>  <po:comment>This is a test comment.</po:comment>  <items>    <item partNum="123-AB">      <productName>apple</productName>      <price>1.2</price>      <quantity>12</quantity>      <po:comment>empty comment.</po:comment>      <shipDate>2010-06-30</shipDate>    </item>    <item partNum="456-CD">      <productName>pear</productName>      <price>2.1</price>      <quantity>21</quantity>      <po:comment>empty comment.</po:comment>    </item>  </items></po:purchaseOrder>