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/**
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* Copyright (C) 2007 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*
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* @author n.hoffmann
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* @version $Id: $
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*/
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package eu.etaxonomy.taxeditor.datasource;
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import java.io.File;
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import java.io.FileNotFoundException;
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import java.util.ArrayList;
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import java.util.List;
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import org.eclipse.core.runtime.IPath;
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import org.eclipse.ui.IMemento;
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import org.eclipse.ui.XMLMemento;
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import eu.etaxonomy.cdm.database.CdmDataSource;
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import eu.etaxonomy.cdm.database.CdmPersistentDataSource;
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import eu.etaxonomy.cdm.database.DataSourceNotFoundException;
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import eu.etaxonomy.cdm.database.ICdmDataSource;
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import eu.etaxonomy.cdm.model.name.NomenclaturalCode;
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import eu.etaxonomy.taxeditor.model.MementoHelper;
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import eu.etaxonomy.taxeditor.preference.PreferencesUtil;
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import eu.etaxonomy.taxeditor.store.CdmStore;
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import eu.etaxonomy.taxeditor.store.StoreUtil;
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import eu.etaxonomy.taxeditor.store.internal.TaxeditorStorePlugin;
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public class CdmDataSourceRepository{;
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/** Constant <code>TAG_DATASOURCE="tagDataSource"</code> */
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public static final String TAG_DATASOURCE = "tagDataSource";
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private static final String CURRENT_DATASOURCE = "currentDataSource";
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private static final String DEFAULT_DATASOURCE_STATE_FILENAME = "datasource.xml";
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private static final String DEFAULT_DATASOURCE_NAME = "cdm";
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private static ICdmDataSource currentDataSource;
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private static IMemento memento;
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private static String lastUsedDataSourceName;
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/**
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* <p>Getter for the field <code>lastUsedDataSourceName</code>.</p>
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*
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* @return a {@link java.lang.String} object.
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*/
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public static String getLastUsedDataSourceName(){
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if(lastUsedDataSourceName == null){
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memento = readMemento();
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lastUsedDataSourceName = memento != null ? memento.getString(CURRENT_DATASOURCE) : DEFAULT_DATASOURCE_NAME;
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}
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return lastUsedDataSourceName;
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}
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/**
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* <p>delete</p>
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*
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* @param dataSource a {@link eu.etaxonomy.cdm.database.CdmPersistentDataSource} object.
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* @return a boolean.
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*/
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public static boolean delete(CdmPersistentDataSource dataSource) {
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CdmPersistentDataSource.delete(dataSource);
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return true;
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}
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/**
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* <p>getAll</p>
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*
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* @return a {@link java.util.List} object.
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*/
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public static List<ICdmDataSource> getAll() {
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List<ICdmDataSource> dataSources = new ArrayList<ICdmDataSource>();
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for(ICdmDataSource dataSource : CdmPersistentDataSource.getAllDataSources()){
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try {
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dataSources.add(CdmPersistentDataSource.NewInstance(dataSource.getName()));
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} catch (DataSourceNotFoundException e) {
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StoreUtil.error(CdmDataSourceRepository.class, "Could not find dataSource", e);
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}
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}
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// TODO sort by database name
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return dataSources;
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}
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/**
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* <p>getDataSource</p>
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*
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* @param name a {@link java.lang.String} object.
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* @return a {@link eu.etaxonomy.cdm.database.ICdmDataSource} object.
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*/
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public static ICdmDataSource getDataSource(String name){
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for(ICdmDataSource dataSource : CdmPersistentDataSource.getAllDataSources()){
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try {
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if(dataSource.getName().equals(name)){
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return CdmPersistentDataSource.NewInstance(dataSource.getName());
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}
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} catch (DataSourceNotFoundException e) {
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StoreUtil.error(CdmDataSourceRepository.class, "Could not find dataSource", e);
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}
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}
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return null;
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}
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/**
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* <p>Getter for the field <code>currentDataSource</code>.</p>
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*
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* @return a {@link eu.etaxonomy.cdm.database.ICdmDataSource} object.
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*/
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public static ICdmDataSource getCurrentDataSource() {
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if (currentDataSource == null) {
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try {
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currentDataSource = CdmPersistentDataSource.NewInstance(getLastUsedDataSourceName());
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} catch (DataSourceNotFoundException e) {
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// fallback creates a new default
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ICdmDataSource h2DataSource = CdmDataSource.NewH2EmbeddedInstance(
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DEFAULT_DATASOURCE_NAME, "sa", "", PreferencesUtil.getPreferredNomenclaturalCode());
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save(h2DataSource.getName(), h2DataSource);
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setCurrentDataSource(h2DataSource);
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}
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}
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return currentDataSource;
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}
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/**
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* <p>Setter for the field <code>currentDataSource</code>.</p>
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*
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* @param dataSource a {@link eu.etaxonomy.cdm.database.ICdmDataSource} object.
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* @return a boolean.
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*/
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public static boolean setCurrentDataSource(ICdmDataSource dataSource) {
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currentDataSource = dataSource;
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NomenclaturalCode dataSourceNomenclaturalCode = dataSource.getNomenclaturalCode();
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NomenclaturalCode applicationNomenclaturalCode = PreferencesUtil.getPreferredNomenclaturalCode();
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if( dataSourceNomenclaturalCode != null && ! dataSourceNomenclaturalCode.equals(applicationNomenclaturalCode)){
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PreferencesUtil.setPreferredNomenclaturalCode(dataSourceNomenclaturalCode);
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StoreUtil.informationDialog("Nomenclatural Code Change", "The Datasource that was just " +
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"loaded has a different nomenclatural code than the one stored in Preferences. " +
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"The nomenclatural code was changed in the application.");
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}
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return true;
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}
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/**
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* <p>changeDataSource</p>
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*
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* @param dataSource a {@link eu.etaxonomy.cdm.database.ICdmDataSource} object.
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* @return a boolean.
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*/
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public static boolean changeDataSource(final ICdmDataSource dataSource) {
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saveAsCurrentDatabaseToMemento(dataSource);
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CdmStore.connect(dataSource);
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return true;
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}
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/**
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* <p>save</p>
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*
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* @param dataSource a {@link eu.etaxonomy.cdm.database.ICdmDataSource} object.
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* @param strDataSourceName a {@link java.lang.String} object.
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* @return a {@link eu.etaxonomy.cdm.database.CdmPersistentDataSource} object.
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*/
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public static CdmPersistentDataSource save(String strDataSourceName, ICdmDataSource dataSource) {
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return CdmPersistentDataSource.save(strDataSourceName, dataSource);
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}
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/**
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* <p>update</p>
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*
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* @param strDataSourceName a {@link java.lang.String} object.
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* @param dataSource a {@link eu.etaxonomy.cdm.database.ICdmDataSource} object.
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* @return a {@link eu.etaxonomy.cdm.database.CdmPersistentDataSource} object.
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*/
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public static CdmPersistentDataSource update(String strDataSourceName, ICdmDataSource dataSource){
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try {
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return CdmPersistentDataSource.update(strDataSourceName, dataSource);
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} catch (Exception e) {
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StoreUtil.error(CdmDataSourceRepository.class, "Error updating datasource", e);
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}
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return null;
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}
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/*********************************************************
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* Memento Handling *
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*********************************************************/
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private static void saveAsCurrentDatabaseToMemento(ICdmDataSource dataSource){
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if(memento == null)
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memento = readMemento();
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memento.putString(CURRENT_DATASOURCE, dataSource.getName());
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saveMementoToFile(memento);
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}
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/*
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* Answer the workbench state file.
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*/
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private static File getDataSourceStateFile() {
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IPath path = TaxeditorStorePlugin.getDefault().getStateLocation();
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if (path == null) {
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return null;
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}
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path = path.append(DEFAULT_DATASOURCE_STATE_FILENAME);
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return path.toFile();
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}
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private static IMemento readMemento(){
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try {
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return MementoHelper.readMementoFromFile(getDataSourceStateFile());
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} catch (FileNotFoundException e) {
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return initializeMemento();
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}
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}
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private static IMemento initializeMemento() {
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XMLMemento memento = XMLMemento.createWriteRoot(TAG_DATASOURCE);
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memento.putString(CURRENT_DATASOURCE, DEFAULT_DATASOURCE_NAME);
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saveMementoToFile(memento);
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return readMemento();
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}
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/*
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* Save the workbench UI in a persistence file.
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*/
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private static IMemento saveMementoToFile(IMemento memento) {
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return MementoHelper.saveMementoToFile(memento, getDataSourceStateFile());
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}
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}
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