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author | lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68> | 2009-11-10 19:19:03 +0000 |
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committer | lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68> | 2009-11-10 19:19:03 +0000 |
commit | dc741421e88c3e4210b00f39877159c5117b99d3 (patch) | |
tree | 68ae372d3c8a7fee11f44a4701585db55d24369d /sdo-java/branches/sdo-java-M2/sdo/sample/src/main/java/org/apache/tuscany/samples/sdo/specExampleSection/SerializingDesearializingADataObject.java | |
parent | 9833a542bb75c2008c71809e4fdfebc41e67fb46 (diff) |
moving SDO branches
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@834611 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'sdo-java/branches/sdo-java-M2/sdo/sample/src/main/java/org/apache/tuscany/samples/sdo/specExampleSection/SerializingDesearializingADataObject.java')
-rw-r--r-- | sdo-java/branches/sdo-java-M2/sdo/sample/src/main/java/org/apache/tuscany/samples/sdo/specExampleSection/SerializingDesearializingADataObject.java | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/sdo-java/branches/sdo-java-M2/sdo/sample/src/main/java/org/apache/tuscany/samples/sdo/specExampleSection/SerializingDesearializingADataObject.java b/sdo-java/branches/sdo-java-M2/sdo/sample/src/main/java/org/apache/tuscany/samples/sdo/specExampleSection/SerializingDesearializingADataObject.java new file mode 100644 index 0000000000..97772eaf33 --- /dev/null +++ b/sdo-java/branches/sdo-java-M2/sdo/sample/src/main/java/org/apache/tuscany/samples/sdo/specExampleSection/SerializingDesearializingADataObject.java @@ -0,0 +1,183 @@ +/** + * + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.samples.sdo.specExampleSection; + +import commonj.sdo.helper.XMLHelper; +import commonj.sdo.helper.XSDHelper; +import commonj.sdo.helper.EqualityHelper; +import commonj.sdo.DataObject; + +import java.io.BufferedReader; +import java.io.FileInputStream; +import java.io.InputStreamReader; +import java.io.ObjectInputStream; +import java.io.FileOutputStream; +import java.io.ObjectOutputStream; +import java.io.IOException; + + +import org.apache.tuscany.samples.sdo.SdoSampleConstants; + +/** + * Demonstrates serializing and deserializing a DataObject to disk. + * + * The following sample is from the <a href="http://incubator.apache.org/tuscany" + * target="_blank"> Apache Tuscany</a> project. It was written to help users + * understand and experiement with SDO. It is based upon example code contained + * within, and is meant for use with, and reference to the <a + * href="http://www.osoa.org/download/attachments/791/SDO_Specification_Java_V2.01.pdf?version=1" + * target="_bank">SDO Specification</a>. In general this sample attempts to use the + * code and comments contained within the specification, exceptions to this are noted + * in comments.<br> + * <br> + * The following sample is based upon the 'Serializing/Deserializing a DataGraph or DataObject' example from the Examples section of the SDO + * specification. <br> + * <br> + * The DataObject and DataGraph interfaces extend java.io.Serializable, so any DataObject + * or DataGraph be serialized. The following code serializes the company dataObject to a file + * of the user's choosing. The file is not deleted after execution.<br> + * <br><br> + * <b>Usage:</b> <br> + * This sample can easily be run from within Eclipse as a Java Application if tuscany or + * the sample-sdo project is imported into Eclipse as an existing project. + * <br><br> + * If executing as a standalone application please do the following: + * <br> + * <UL> + * <LI>Include the following jar files on your classpath : + * <UL> + * <LI>SDO API and Tuscany Implementation + * <UL> + * <LI>sdo-api-{version}.jar - SDO API + * <LI>tuscany-sdo-impl-{version}.jar - Tuscany SDO implementation + * </UL> + * </LI> + * <LI>EMF dependencies. + * <UL> + * <LI>emf-common-{version}.jar - some common framework utility and base classes + * <LI>emf-ecore-{version}.jar - the EMF core runtime implementation classes (the Ecore metamodel) + * <LI>emf-ecore-change-{version}.jar - the EMF change recorder and framework + * <LI>emf-ecore-xmi-{version}.jar - EMF's default XML (and XMI) serializer and loader + * <LI>xsd-{version}.jar - the XML Schema model + * </UL> + * </LI> + * </UL> + * + * These jar files can be obtained from directly from Tuscany and EMF projects or from <a + * href="http://wiki.apache.org/ws-data/attachments/Tuscany(2f)TuscanyJava(2f)SDO_Java_Overview/attachments/SDO%20Execution%20Dependencies" + * target="_bank">SDO Execution Dependancies </a> </LI> + * <LI>Execute: <br> + * java org.apache.tuscany.samples.sdo.specExampleSection.SerializingDesearializingADataObject</LI> + * </UL> + * + * @author Robbie Minshall + */ + +public class SerializingDesearializingADataObject { + + /** + * Default fileName to serialize DataObject to + */ + public static final String DEFAULT_FILE_NAME = "temporarySerializedDataObject.xml"; + + public static void serializeDO(DataObject DataObject, String fileName) throws IOException { + // serialize data object + FileOutputStream fos = new FileOutputStream(fileName); + ObjectOutputStream out = new ObjectOutputStream(fos); + out.writeObject(DataObject); + out.close(); + } + + /** + * Execute this method in order to run the sample. + * + * @param args + */ + public static void main(String[] args) { + System.out.println("***************************************"); + System.out.println("SDO Sample AccessingTheContentsOfASequence"); + System.out.println("***************************************"); + System.out.println("Demonstrates serializing and deserializing a DataObject to disk."); + System.out.println("***************************************"); + + + try { + // define Types using XSDHelper and predefined xsd file + System.out.println("Defining Types using XSD"); + XSDHelper.INSTANCE.define(ClassLoader.getSystemResourceAsStream(SdoSampleConstants.COMPANY_XSD), null); + System.out.println("Type definition completed"); + + // create company DataObject using XMLHelper which is an example of a XML DAS + System.out.println("Creating company DataObject"); + DataObject company = XMLHelper.INSTANCE.load(ClassLoader.getSystemResourceAsStream(SdoSampleConstants.COMPANY_DATAOBJECT_XML)) + .getRootObject(); + + // prompt user for a fileName + BufferedReader in = new BufferedReader(new InputStreamReader(System.in)); + System.out.print("Please enter file name, enter for default :"); + String fileName = in.readLine(); + if ( (fileName == null) || (fileName.equals(""))){ + fileName = DEFAULT_FILE_NAME; + } + + // serialize dataObject out + System.out.println("Serializing DataObject to " + fileName); + FileOutputStream fos = new FileOutputStream(fileName); + ObjectOutputStream out = new ObjectOutputStream(fos); + out.writeObject(company); + out.close(); + + // read in DataObject + System.out.println("Deserialize DataObject from file"); + FileInputStream fis = new FileInputStream(fileName); + ObjectInputStream input = new ObjectInputStream(fis); + DataObject newDataObject = (DataObject) input.readObject(); + input.close(); + + /** + * Compare DataObjects + */ + + System.out.println("Comparing original and deserialized DataObject"); + //determine if two graphs of DataObjects are equal + System.out.println("DataObjects are equal: " + EqualityHelper.INSTANCE.equal(company, newDataObject)); + + //determine if two DataObjects have the same values for their datatype properties + System.out.println("DataObjects have same values for their datatype properties : " + EqualityHelper.INSTANCE.equalShallow(company, newDataObject)); + + //print out xml representation + System.out.println(); + System.out.println("Original company DataObject:"); + System.out.println(XMLHelper.INSTANCE.save(company, SdoSampleConstants.COMPANY_NAMESPACE, "company")); + + System.out.println(); + System.out.println("Deserialized company DataObject:"); + System.out.println(XMLHelper.INSTANCE.save(newDataObject, SdoSampleConstants.COMPANY_NAMESPACE, "company")); + + } catch (Exception e) { + System.out.println("Sorry there was an error encountered " + e.toString()); + e.printStackTrace(); + } + + System.out.println("GoodBye"); + + } +} |