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/*******************************************************************************
* Copyright (c) 2004, 2007 Boeing.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.orcs.db.internal.exchange.handler;
import java.sql.DatabaseMetaData;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.osee.framework.jdk.core.type.OseeCoreException;
import org.eclipse.osee.framework.jdk.core.type.PropertyStore;
import org.eclipse.osee.jdbc.JdbcClient;
import org.eclipse.osee.jdbc.JdbcConnection;
import org.eclipse.osee.logger.Log;
import org.eclipse.osee.orcs.db.internal.exchange.TranslationManager;
/**
* @author Roberto E. Escobar
*/
public abstract class BaseDbSaxHandler extends BaseExportImportSaxHandler {
private final List<Object[]> data;
private final int cacheLimit;
private final boolean isCacheAll;
private MetaData metadata;
private TranslationManager translator;
private PropertyStore options;
private final JdbcClient service;
private final Log logger;
protected BaseDbSaxHandler(Log logger, JdbcClient service, boolean isCacheAll, int cacheLimit) {
super();
if (cacheLimit < 0) {
throw new IllegalArgumentException(String.format("Cache limit cannot be less than zero - cacheLimit=[%d]",
cacheLimit));
}
this.logger = logger;
this.service = service;
this.options = new PropertyStore();
this.translator = null;
this.metadata = null;
this.isCacheAll = isCacheAll;
this.cacheLimit = cacheLimit;
this.data = new ArrayList<Object[]>();
}
protected Log getLogger() {
return logger;
}
public void setOptions(PropertyStore options) {
if (options != null) {
this.options = options;
}
}
protected PropertyStore getOptions() {
return this.options;
}
public void setMetaData(MetaData metadata) {
this.metadata = metadata;
}
public void setTranslator(TranslationManager translator) {
this.translator = translator;
}
protected MetaData getMetaData() {
return this.metadata;
}
protected TranslationManager getTranslator() {
return this.translator;
}
public boolean isStorageNeeded() {
return !isCacheAll && data.size() > cacheLimit;
}
protected void addData(Object[] objects) {
this.data.add(objects);
}
public void store() throws OseeCoreException {
store(null);
}
public void store(JdbcConnection connection) throws OseeCoreException {
if (!data.isEmpty()) {
getDatabaseService().runBatchUpdate(connection, getMetaData().getQuery(), data);
data.clear();
}
}
private boolean isTruncateSupported() throws OseeCoreException {
boolean isTruncateSupported = false;
JdbcConnection connection = service.getConnection();
try {
DatabaseMetaData metaData = connection.getMetaData();
ResultSet resultSet = null;
try {
resultSet = metaData.getTablePrivileges(null, null, getMetaData().getTableName().toUpperCase());
while (resultSet.next()) {
String value = resultSet.getString("PRIVILEGE");
if ("TRUNCATE".equalsIgnoreCase(value)) {
isTruncateSupported = true;
break;
}
}
} catch (SQLException ex1) {
logger.info(ex1, "Error determining truncate support");
} finally {
if (resultSet != null) {
try {
resultSet.close();
} catch (SQLException ex) {
// Do Nothing
}
}
}
} finally {
connection.close();
}
return isTruncateSupported;
}
public void clearDataTable() throws OseeCoreException {
String cmd = isTruncateSupported() ? "TRUNCATE TABLE" : "DELETE FROM";
String deleteSql = String.format("%s %s", cmd, getMetaData().getTableName());
try {
getDatabaseService().runPreparedUpdate(deleteSql);
} catch (OseeCoreException ex) {
logger.info(ex, "Error clearing: %s", deleteSql);
throw ex;
}
}
protected JdbcClient getDatabaseService() {
return service;
}
public void reset() {
this.translator = null;
this.options = null;
this.metadata = null;
this.data.clear();
}
}
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