datatype2test.java

解决如何把XML应用到JAVA里问题

/*
 * Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
 *
 * This software is open source.
 * See the bottom of this file for the licence.
 */

package org.dom4j.datatype;

import junit.textui.TestRunner;

import java.io.StringReader;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.SimpleTimeZone;
import java.util.TimeZone;

import org.dom4j.Attribute;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;

/**
 * Test harness for XML Schema Datatypes support
 * 
 * @author Yuxin Ruan
 * @version $Revision: 1.3 $
 */
public class Datatype2Test extends AbstractDataTypeTestCase {
    public static final int YEAR = 2001;

    public static final int MONTH = 10;

    public static final int DATE = 31;

    public static void main(String[] args) {
        TestRunner.run(Datatype2Test.class);
    }

    public void testSchema() throws Exception {
        Document schema = getSchema();
        validateDocumentWithSchema(schema);
    }

    public void testSchemaWithNamedComplexType() throws Exception {
        Document schema = getSchemaWithNamedComplexType();
        validateDocumentWithSchema(schema);
    }

    public void testSchemaWithReference() throws Exception {
        Document schema = getSchemaWithReference();
        validateDocumentWithSchema(schema);
    }

    public void testSchemaWithNamedSimpleType() throws Exception {
        Document schema = getSchemaWithNamedSimpleType();
        validateDocumentWithSchema(schema);
    }

    private void validateDocumentWithSchema(Document schema) throws Exception {
        Document doc = getSource(schema);
        Element root = doc.getRootElement();
        validateLongAttribute(root);
        validateFloatElement(root);
        validateDateElement(root);
    }

    private void validateLongAttribute(Element root) throws Exception {
        Attribute attr = root.attribute("longAttribute");
        Object attrData = attr.getData();
        validateData("testLongAttribute", attrData, new Long(123));
        System.out.println("retrieved attribute " + attrData);
    }

    private void validateFloatElement(Element root) throws Exception {
        Element elem = root.element("floatElement");
        Object elemData = elem.getData();
        validateData("testFloatElement", elemData, new Float(1.23));
        System.out.println("retrieved element:" + elemData);
    }

    private void validateDateElement(Element root) throws Exception {
        Element elem = root.element("dateElement");
        Object elemData = elem.getData();
        Calendar expected = getDate();

        System.out.println("retrieved element:" + elemData);

        // don't compare the Calendar instances, compare their strings instead!
        assertTrue(elemData instanceof Calendar);

        Calendar elemCal = (Calendar) elemData;

        DateFormat format = new SimpleDateFormat("MM/dd/yyyyZ");
        format.setTimeZone(elemCal.getTimeZone());

        String elemStr = format.format(elemCal.getTime());

        format.setTimeZone(expected.getTimeZone());

        String expectedStr = format.format(expected.getTime());

        assertEquals("testDateElement", expectedStr, elemStr);
    }

    private void validateData(String test, Object retrieved, Object expected)
            throws Exception {
        Class retrievedClass = retrieved.getClass();
        Class expectedClass = expected.getClass();

        // compare class
        if (!expectedClass.equals(retrievedClass)) {
            String msg = "class mismatch in " + test + ":expected "
                    + expectedClass + ", retrieved " + retrievedClass;
            throw new Exception(msg);
        }

        // compare value
        if (!expected.equals(retrieved)) {
            String msg = "value mismatch in " + test + ":expected " + expected
                    + ", retrieved " + retrieved;
            throw new Exception(msg);
        }
    }

    private Document getSource(Document schema) throws Exception {
        StringBuffer b = new StringBuffer();
        b.append("<?xml version='1.0' ?>");
        b.append("<test xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'");
        b.append("        xsi:noNamespaceSchemaLocation='long.xsd'");
        b.append("        longAttribute='123' >");
        b.append("    <floatElement>1.23</floatElement>");
        b.append("    <dateElement>" + getDateString() + "</dateElement>");
        b.append("</test>");

        StringReader in = new StringReader(b.toString());
        DatatypeDocumentFactory docFactory = new DatatypeDocumentFactory();
        docFactory.loadSchema(schema);

        SAXReader parser = new SAXReader(docFactory);

        return parser.read(in);
    }

    private Document getSchema() throws Exception {
        StringBuffer b = new StringBuffer();
        b.append("<?xml version='1.0' encoding='UTF-8'?>");
        b.append("<xsd:schema xmlns:xsd='http://www.w3.org/2001/XMLSchema'>");
        b.append(" <xsd:element name='test'>");
        b.append("  <xsd:complexType>");
        b.append("   <xsd:sequence>");
        b.append("    <xsd:element name='floatElement' type='xsd:float' />");
        b.append("    <xsd:element name='dateElement' type='xsd:date' />");
        b.append("   </xsd:sequence>");
        b.append("   <xsd:attribute name='longAttribute' type='xsd:long' />");
        b.append("  </xsd:complexType>");
        b.append(" </xsd:element>");
        b.append("</xsd:schema>");

        StringReader in = new StringReader(b.toString());
        SAXReader parser = new SAXReader();

        return parser.read(in);
    }

    private Document getSchemaWithNamedComplexType() throws Exception {
        StringBuffer b = new StringBuffer();
        b.append("<?xml version='1.0' encoding='UTF-8'?>");
        b.append("<xsd:schema xmlns:xsd='http://www.w3.org/2001/XMLSchema'>");
        b.append(" <xsd:element name='test' type='TimePeriodType' />");
        b.append(" <xsd:complexType name='TimePeriodType'>");
        b.append("  <xsd:sequence>");
        b.append("   <xsd:element name='floatElement' type='xsd:float' />");
        b.append("   <xsd:element name='dateElement' type='xsd:date' />");
        b.append("  </xsd:sequence>");
        b.append("  <xsd:attribute name='longAttribute' type='xsd:long' />");
        b.append(" </xsd:complexType>");
        b.append("</xsd:schema>");

        StringReader in = new StringReader(b.toString());
        SAXReader parser = new SAXReader();

        return parser.read(in);
    }

    private Document getSchemaWithReference() throws Exception {
        StringBuffer b = new StringBuffer();
        b.append("<?xml version='1.0' encoding='UTF-8'?>");
        b.append("<xsd:schema xmlns:xsd='http://www.w3.org/2001/XMLSchema'>");
        b.append(" <xsd:element name='test' type='TimePeriodType' />");
        b.append(" <xsd:complexType name='TimePeriodType'>");
        b.append("  <xsd:sequence>");
        b.append("   <xsd:element name='floatElement' type='xsd:float' />");
        b.append("   <xsd:element ref='dateElement' />");
        b.append("  </xsd:sequence>");
        b.append("  <xsd:attribute name='longAttribute' type='xsd:long' />");
        b.append(" </xsd:complexType>");
        b.append(" <xsd:element name='dateElement' type='xsd:date' />");
        b.append("</xsd:schema>");

        StringReader in = new StringReader(b.toString());
        SAXReader parser = new SAXReader();

        return parser.read(in);
    }

    private Document getSchemaWithNamedSimpleType() throws Exception {
        StringBuffer b = new StringBuffer();
        b.append("<?xml version='1.0' encoding='UTF-8'?>");
        b.append("<xsd:schema xmlns:xsd='http://www.w3.org/2001/XMLSchema'>");
        b.append(" <xsd:element name='test'>");
        b.append("  <xsd:complexType>");
        b.append("   <xsd:sequence>");
        b.append("    <xsd:element name='floatElement' type='xsd:float' />");
        b.append("    <xsd:element name='dateElement' type='dateType' />");
        b.append("   </xsd:sequence>");
        b.append("   <xsd:attribute name='longAttribute' type='xsd:long' />");
        b.append("  </xsd:complexType>");
        b.append(" </xsd:element>");
        b.append(" <xsd:simpleType name='dateType'>");
        b.append("  <xsd:restriction base='xsd:date'>");
        b.append("  </xsd:restriction>");
        b.append(" </xsd:simpleType>");
        b.append("</xsd:schema>");

        StringReader in = new StringReader(b.toString());
        SAXReader parser = new SAXReader();

        return parser.read(in);
    }

    private static String getDateString() {
        // return dateTime in ISO8601 format
        String yyyy = Integer.toString(YEAR);
        String mm = Integer.toString(MONTH);
        String dd = Integer.toString(DATE);

        return yyyy + "-" + mm + "-" + dd + "Z";
    }

    private static Calendar getDate() {
        Calendar calendar = new GregorianCalendar();
        calendar.clear();
        calendar.set(Calendar.YEAR, YEAR);
        calendar.set(Calendar.MONTH, MONTH - 1);
        calendar.set(Calendar.DAY_OF_MONTH, DATE);
        calendar.setTimeZone(TimeZone.getTimeZone("UTC"));
        calendar.setTimeZone(new SimpleTimeZone(0, "XSD 'Z' timezone"));

        return calendar;
    }
}

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 * following conditions are met:
 * 
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 * notices. Redistributions must also contain a copy of this document.
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 * written permission, please contact [e-mail].
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 * Ltd. DOM4J is a registered trademark of MetaStuff, Ltd.
 * 
 * 5. Due credit should be given to the DOM4J Project - http://www.dom4j.org
 * 
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 * POSSIBILITY OF SUCH DAMAGE.
 * 
 * Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
 */