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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.config.CdmPersistentSourceUtils;
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import eu.etaxonomy.cdm.config.ICdmPersistentSource;
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import eu.etaxonomy.cdm.config.ICdmSource;
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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.model.MessagingUtils;
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import eu.etaxonomy.taxeditor.preference.PreferencesUtil;
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import eu.etaxonomy.taxeditor.remoting.source.CdmPersistentRemoteSource;
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import eu.etaxonomy.taxeditor.remoting.source.CdmRemoteSourceException;
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import eu.etaxonomy.taxeditor.remoting.source.ICdmRemoteSource;
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import eu.etaxonomy.taxeditor.store.CdmStore;
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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 CURRENT_DATASOURCE_POSTFIX = "currentDataSourcePostFix";
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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 final String DEFAULT_DATASOURCE_POSTFIX = CdmPersistentDataSource.DATASOURCE_BEAN_POSTFIX;
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private static ICdmSource currentCdmSource;
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private static IMemento memento;
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private static String lastUsedCdmSourceName;
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private static String lastUsedCdmSourcePostFix;
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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 void updateLastUsedDataSource(){
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if(lastUsedCdmSourceName == null){
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memento = readMemento();
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lastUsedCdmSourceName = memento != null ? memento.getString(CURRENT_DATASOURCE) : DEFAULT_DATASOURCE_NAME;
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lastUsedCdmSourcePostFix = memento != null ? memento.getString(CURRENT_DATASOURCE_POSTFIX) : DEFAULT_DATASOURCE_POSTFIX;
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}
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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(ICdmPersistentSource cdmPersistentSource) {
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CdmPersistentSourceUtils.delete(cdmPersistentSource);
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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<ICdmSource> getAll() {
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List<ICdmSource> remoteSources = new ArrayList<ICdmSource>();
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for(ICdmDataSource dataSource : CdmPersistentDataSource.getAllDataSources()){
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try {
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remoteSources.add(CdmPersistentDataSource.NewInstance(dataSource.getName()));
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} catch (DataSourceNotFoundException e) {
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MessagingUtils.error(CdmDataSourceRepository.class, "Could not find dataSource", e);
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}
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}
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try {
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for(ICdmRemoteSource remoteSource : CdmPersistentRemoteSource.getAllRemoteSources()){
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remoteSources.add(remoteSource);
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}
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} catch (CdmRemoteSourceException e) {
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MessagingUtils.error(CdmDataSourceRepository.class, "Error retrieving remote sources", e);
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}
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// TODO sort by database name
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return remoteSources;
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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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MessagingUtils.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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* @throws CdmRemoteSourceException
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*/
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public static ICdmSource getCurrentCdmSource() throws CdmRemoteSourceException {
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if (currentCdmSource == null) {
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updateLastUsedDataSource();
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if(lastUsedCdmSourceName == null) {
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return null;
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}
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// for post fix = null , source is by default a data source
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if(lastUsedCdmSourcePostFix == null || lastUsedCdmSourcePostFix.equals(CdmPersistentDataSource.DATASOURCE_BEAN_POSTFIX)) {
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try {
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currentCdmSource = CdmPersistentDataSource.NewInstance(lastUsedCdmSourceName);
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} catch (DataSourceNotFoundException e) {
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// fallback creates a new default
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setCurrentCdmSource(createDefaultH2DataSource());
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}
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} else if (lastUsedCdmSourcePostFix.equals(CdmPersistentRemoteSource.REMOTESOURCE_BEAN_POSTFIX)) {
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currentCdmSource = CdmPersistentRemoteSource.NewInstance(lastUsedCdmSourceName);
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} else {
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throw new CdmRemoteSourceException("Unkown Cdm Source Type");
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}
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}
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return currentCdmSource;
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}
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/**
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* Creates a default H2 CDM Data Source
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*
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* @return the newly created data source
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*/
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public static ICdmDataSource createDefaultH2DataSource() {
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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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return h2DataSource;
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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 setCurrentCdmSource(ICdmSource cdmSource) {
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currentCdmSource = cdmSource;
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NomenclaturalCode dataSourceNomenclaturalCode = cdmSource.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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MessagingUtils.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 ICdmSource cdmSource) {
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saveAsCurrentDatabaseToMemento(cdmSource);
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CdmStore.connect(cdmSource);
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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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* @throws CdmRemoteSourceException
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*/
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public static ICdmPersistentSource save(String strCdmSourceName, ICdmRemoteSource cdmSource) throws CdmRemoteSourceException {
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return CdmPersistentRemoteSource.save(strCdmSourceName, cdmSource);
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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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* @throws CdmRemoteSourceException
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*/
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public static ICdmPersistentSource save(String strCdmSourceName, ICdmDataSource cdmSource) {
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return CdmPersistentDataSource.save(strCdmSourceName, cdmSource);
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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 ICdmPersistentSource update(String strCdmSourceName, ICdmDataSource cdmSource){
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try {
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return CdmPersistentDataSource.update(strCdmSourceName, cdmSource);
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} catch (Exception e) {
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MessagingUtils.error(CdmDataSourceRepository.class, "Error updating CDM Source", e);
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}
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return null;
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}
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public static ICdmPersistentSource replace(String strCdmSourceName, ICdmDataSource cdmSource){
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try {
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return CdmPersistentDataSource.replace(strCdmSourceName, cdmSource);
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} catch (Exception e) {
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MessagingUtils.error(CdmDataSourceRepository.class, "Error updating CDM Source", e);
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}
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return null;
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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 ICdmPersistentSource update(String strCdmSourceName, ICdmRemoteSource cdmSource){
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try {
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return CdmPersistentRemoteSource.update(strCdmSourceName, cdmSource);
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} catch (Exception e) {
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MessagingUtils.error(CdmDataSourceRepository.class, "Error updating CDM Source", 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(ICdmSource cdmSource){
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if(memento == null) {
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memento = readMemento();
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}
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memento.putString(CURRENT_DATASOURCE, cdmSource.getName());
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// Set postfix to distinguish between data and remote sources
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if(cdmSource instanceof CdmPersistentRemoteSource) {
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memento.putString(CURRENT_DATASOURCE_POSTFIX, CdmPersistentRemoteSource.REMOTESOURCE_BEAN_POSTFIX);
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} else {
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memento.putString(CURRENT_DATASOURCE_POSTFIX, CdmPersistentDataSource.DATASOURCE_BEAN_POSTFIX);
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}
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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 getCdmSourceStateFile() {
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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(getCdmSourceStateFile());
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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, getCdmSourceStateFile());
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}
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}
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