EDIT

/**

* Copyright (C) 2008 EDIT

* European Distributed Institute of Taxonomy 

* http://www.e-taxonomy.eu

*/

package eu.etaxonomy.cdm.app.util;

import java.util.List;

import java.util.UUID;

import org.apache.log4j.Logger;

import org.springframework.transaction.TransactionStatus;

import eu.etaxonomy.cdm.api.application.CdmApplicationDefaultController;

import eu.etaxonomy.cdm.database.DbSchemaValidation;

import eu.etaxonomy.cdm.database.ICdmDataSource;

import eu.etaxonomy.cdm.model.agent.AgentBase;

import eu.etaxonomy.cdm.model.agent.TeamOrPersonBase;

import eu.etaxonomy.cdm.model.name.BotanicalName;

import eu.etaxonomy.cdm.model.name.Rank;

import eu.etaxonomy.cdm.model.reference.Reference;

import eu.etaxonomy.cdm.model.taxon.Taxon;

import eu.etaxonomy.cdm.model.taxon.TaxonBase;

/**

 * @author a.babadshanjan

 * @created 27.10.2008

 */

public class TestTransaction {

	private static final String dbName = "cdm_test_jaxb";

    private static final int MAX_ENTRIES = 20;

	private static final ICdmDataSource db = TestDatabase.CDM_DB(dbName);

    private static final Logger logger = Logger.getLogger(TestTransaction.class);

    /** Modifies disjunct objects within two transactions of one application context.

     *  Flow:

     *  Start transaction #1. Modify and save taxon #1.

     *  Start transaction #2. Modify taxon #2.

     *  Commit transaction #1.

     *  Save taxon #2.

     *  Commit transaction #2.

     *  

     *  It is possible to commit transaction #2 before committing transaction #1

     *  but it is not possible to modify data after transaction #2 has been committed

     *  (LazyInitializationException). However, it is possible to save data after 

     *  transaction #2 has been committed.

     */    

	private void modifyDisjunctObjects() {

		CdmApplicationDefaultController appCtr = null;

		logger.info("Test modifying disjunct objects");

		try {

			appCtr = CdmApplicationDefaultController.NewInstance(db, DbSchemaValidation.VALIDATE, true);

		} catch (Exception e) {

			logger.error("Error creating application controller");

			e.printStackTrace();

			System.exit(1);

		}

		BotanicalName name1, name2;

		Rank rankSpecies = Rank.SPECIES();

		Taxon taxon1, taxon2, child1, child2;

		try {

			/* ************** Start Transaction #1 ******************************** */

	    	TransactionStatus txStatOne = appCtr.startTransaction();

	    	List<? extends AgentBase> agents = appCtr.getAgentService().list(null, MAX_ENTRIES, 0, null, null);

	    	//List<TeamOrPersonBase> agents = appCtr.getAgentService().getAllAgents(MAX_ENTRIES, 0);

	    	TeamOrPersonBase author = (TeamOrPersonBase) agents.get(0);

	    	List<Reference> references = appCtr.getReferenceService().list(null, MAX_ENTRIES, 0, null, null);

	    	Reference sec = references.get(0);

	    	List<Taxon> taxa = appCtr.getTaxonService().getAllTaxa(MAX_ENTRIES, 0);

			name1 = 

				BotanicalName.NewInstance(rankSpecies, "Hyoseris", null, "lucida", null, author, null, "1", null);

            // Calendula L.

			taxon1 = taxa.get(0);

			child1 = Taxon.NewInstance(name1, sec);

			taxon1.addTaxonomicChild(child1, sec, "D#t1-c1");

			appCtr.getTaxonService().saveOrUpdate(taxon1);

			/* ************** Start Transaction #2 ******************************** */

			TransactionStatus txStatTwo = appCtr.startTransaction();

			name2 = 

				BotanicalName.NewInstance(rankSpecies, "Hyoseris", null, "scabra", null, author, null, "2", null);

            // Sonchus L.

	    	taxon2 = taxa.get(1);

			child2 = Taxon.NewInstance(name2, sec);

			taxon2.addTaxonomicChild(child2, sec, "D#t2-c2");

			/* ************** Commit Transaction #1 ******************************** */

	    	appCtr.commitTransaction(txStatOne);

			UUID t2uuid = appCtr.getTaxonService().saveOrUpdate(taxon2);

			/* ************** Commit Transaction #2 ******************************** */

	    	appCtr.commitTransaction(txStatTwo);

	    	appCtr.close();

			logger.info("End test modifying disjunct objects"); 

		} catch (Exception e) {

    		logger.error("Error");

    		e.printStackTrace();

		}

	}

    /** Modifies shared objects within two transactions of one application context.

     *  Flow:

     *  Start transaction #1. Modify and save taxon #1.

     *  Start transaction #2. Modify taxon #1.

     *  Commit transaction #1.

     *  Save taxon #1.

     *  Commit transaction #2.

     */    

	private void modifySharedObjects() {

		CdmApplicationDefaultController appCtr = null;

		logger.info("Test modifying shared objects");

		try {

			appCtr = CdmApplicationDefaultController.NewInstance(db, DbSchemaValidation.VALIDATE, true);

		} catch (Exception e) {

			logger.error("Error creating application controller");

			e.printStackTrace();

			System.exit(1);

		}

		BotanicalName name1, name2;

		Rank rankSpecies = Rank.SPECIES();

		Taxon taxon1, taxon2, child1, child2;

		try {

			/* ************** Start Transaction #1 ******************************** */

	    	TransactionStatus txStatOne = appCtr.startTransaction();

	    	List<? extends AgentBase> agents = appCtr.getAgentService().list(null, MAX_ENTRIES, 0, null, null);

	    	//List<TeamOrPersonBase> agents = appCtr.getAgentService().getAllAgents(MAX_ENTRIES, 0);

	    	TeamOrPersonBase author = (TeamOrPersonBase) agents.get(0);

	    	List<Reference> references = appCtr.getReferenceService().list(null, MAX_ENTRIES, 0, null, null);

	    	Reference sec = references.get(0);

	    	List<Taxon> taxa = appCtr.getTaxonService().getAllTaxa(MAX_ENTRIES, 0);

			name1 = 

				BotanicalName.NewInstance(rankSpecies, "Launaea", null, "child1", null, author, null, "1", null);

			// Cichorium intybus L.

	    	taxon1 = taxa.get(5);

			child1 = Taxon.NewInstance(name1, sec);

			taxon1.addTaxonomicChild(child1, sec, "S#t1-c1");

			appCtr.getTaxonService().saveOrUpdate(taxon1);

			/* ************** Start Transaction #2 ******************************** */

			TransactionStatus txStatTwo = appCtr.startTransaction();

			name2 = 

				BotanicalName.NewInstance(rankSpecies, "Reichardia", null, "child2", null, author, null, "2", null);

			// Cichorium intybus L.

	    	taxon2 = taxa.get(5);

			child2 = Taxon.NewInstance(name2, sec);

			taxon2.addTaxonomicChild(child2, sec, "S#t1-c2");

			/* ************** Commit Transaction #1 ******************************** */

	    	appCtr.commitTransaction(txStatOne);

			UUID t2uuid = appCtr.getTaxonService().saveOrUpdate(taxon2);

			/* ************** Commit Transaction #2 ******************************** */

	    	appCtr.commitTransaction(txStatTwo);

	    	appCtr.close();

			logger.info("End test modifying shared objects"); 

		} catch (Exception e) {

    		logger.error("Error");

    		e.printStackTrace();

		}

	}

	private void checkTransactionFacets() {

		CdmApplicationDefaultController appCtr = null;

		logger.info("Test checking transaction facets");

		try {

			appCtr = CdmApplicationDefaultController.NewInstance(db, DbSchemaValidation.VALIDATE, true);

		} catch (Exception e) {

			logger.error("Error creating application controller");

			e.printStackTrace();

			System.exit(1);

		}

		try {

			/* ************** Start Transaction #1 ******************************** */

	    	TransactionStatus txStatOne = appCtr.startTransaction();

	    	appCtr.commitTransaction(txStatOne);

	    	// set CdmApplicationDefaultController = debug in log4j.properties to see the transaction properties

	    	appCtr.close();

			logger.info("End test ask session for objects"); 

		} catch (Exception e) {

    		logger.error("Error");

    		e.printStackTrace();

		}

	}

	private void askSessionForObjects() {

		CdmApplicationDefaultController appCtr = null;

		logger.info("Test asking session for objects");

		try {

			appCtr = CdmApplicationDefaultController.NewInstance(db, DbSchemaValidation.VALIDATE, true);

		} catch (Exception e) {

			logger.error("Error creating application controller");

			e.printStackTrace();

			System.exit(1);

		}

		BotanicalName name1, name1_;

		Rank rankSpecies = Rank.SPECIES();

		Taxon taxon1;

		TaxonBase taxon1_;

		UUID t1uuid;

		try {

			/* ************** Start Transaction #1 ******************************** */

	    	TransactionStatus txStatOne = appCtr.startTransaction();

	    	List<? extends AgentBase> agents = appCtr.getAgentService().list(null, MAX_ENTRIES, 0, null, null);

	    	//List<TeamOrPersonBase> agents = appCtr.getAgentService().getAllAgents(MAX_ENTRIES, 0);

	    	//Agent author = agents.get(0);

	    	TeamOrPersonBase author = (TeamOrPersonBase) agents.get(0);

	    	List<Reference> references = appCtr.getReferenceService().list(null, MAX_ENTRIES, 0, null, null);

	    	Reference sec = references.get(0);

			name1 = 

				BotanicalName.NewInstance(rankSpecies, "NewTaxon1", null, "taxon1", null, author, null, "1", null);

	    	taxon1 = Taxon.NewInstance(name1, sec);

			t1uuid = appCtr.getTaxonService().saveOrUpdate(taxon1);

			//t1uuid = appCtr.getTaxonService().saveTaxon(taxon1, txStatOne);

			/* ************** Start Transaction #2 ******************************** */

			TransactionStatus txStatTwo = appCtr.startTransaction();

			// ask whether object taxon1 is known

			//getSession().

			name1_ = 

				BotanicalName.NewInstance(rankSpecies, "NewTaxon1_", null, "taxon1_", null, author, null, "1_", null);

	    	taxon1_ = appCtr.getTaxonService().find(t1uuid);

			/* ************** Commit Transaction #1 ******************************** */

	    	appCtr.commitTransaction(txStatOne);

			//UUID t2uuid = appCtr.getTaxonService().saveTaxon(taxon2);

			/* ************** Commit Transaction #2 ******************************** */

	    	appCtr.commitTransaction(txStatTwo);

	    	appCtr.close();

			logger.info("End test ask session for objects"); 

		} catch (Exception e) {

    		logger.error("Error");

    		e.printStackTrace();

		}

	}

	private void test() { 

    	/* Init DB */

		// initDb(ICdmDataSource db, DbSchemaValidation dbSchemaValidation, boolean omitTermLoading)

		CdmApplicationDefaultController appCtrInit = TestDatabase.initDb(db, DbSchemaValidation.CREATE, false);

		/* Load test data into DB */

//    	TestDatabase.loadTestData(dbName, appCtrInit);

//		checkTransactionFacets();

//		modifyDisjunctObjects();

//		modifySharedObjects();

	}

	/**

	 * @param args

	 */

	public static void  main(String[] args) {

		TestTransaction ta = new TestTransaction();

    	ta.test();

	}

}