org.plasma.sdo.access.client.EJBDataAccessClient Maven / Gradle / Ivy
/**
* PlasmaSDO™ License
*
* This is a community release of PlasmaSDO™, a dual-license
* Service Data Object (SDO) 2.1 implementation.
* This particular copy of the software is released under the
* version 2 of the GNU General Public License. PlasmaSDO™ was developed by
* TerraMeta Software, Inc.
*
* Copyright (c) 2013, TerraMeta Software, Inc. All rights reserved.
*
* General License information can be found below.
*
* This distribution may include materials developed by third
* parties. For license and attribution notices for these
* materials, please refer to the documentation that accompanies
* this distribution (see the "Licenses for Third-Party Components"
* appendix) or view the online documentation at
* .
*
*/
package org.plasma.sdo.access.client;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.plasma.common.naming.ServiceLocator;
import org.plasma.query.Query;
import org.plasma.sdo.PlasmaNode;
import org.plasma.sdo.access.DataAccessException;
import org.plasma.sdo.access.DataAccessService;
import org.plasma.sdo.core.SnapshotMap;
import commonj.sdo.DataGraph;
import commonj.sdo.DataObject;
/**
*/
public class EJBDataAccessClient implements DataAccessClient
{
private static Log log = LogFactory.getLog(EJBDataAccessClient.class);
private static DataAccessService service;
public DataGraph[] find(Query query)
{
try {
log.debug("calling local persistence service...");
DataAccessService service = locateService();
DataGraph[] results = service.find(query.getModel());
if (log.isDebugEnabled()) {
log.debug("returned " + String.valueOf(results.length) + " results roots");
}
return results;
}
catch (Exception e) {
throw new DataAccessException(e);
}
}
public DataGraph[] find(Query query, int maxResults)
{
try {
log.debug("calling persistence service...");
DataAccessService service = locateService();
DataGraph[] results = service.find(query.getModel(), maxResults);
if (log.isDebugEnabled()) {
log.debug("returned " + String.valueOf(results.length) + " results roots");
}
return results;
}
catch (Exception e) {
throw new DataAccessException(e);
}
}
public List find(Query[] queries)
{
try {
log.debug("calling persistence service...");
org.plasma.query.model.Query[] queryModels = new org.plasma.query.model.Query[queries.length];
for (int i = 0; i < queries.length; i++)
queryModels[i] = (org.plasma.query.model.Query)queries[i].getModel();
DataAccessService service = locateService();
List results = service.find(queryModels);
if (log.isDebugEnabled()) {
log.debug("returned " + String.valueOf(results.size()) + " results roots");
}
return results;
}
catch (Exception e) {
throw new DataAccessException(e);
}
}
public int count(Query query)
{
try {
log.debug("calling persistence service...");
DataAccessService service = locateService();
return service.count(query.getModel());
}
catch (Exception e) {
throw new DataAccessException(e);
}
}
public int[] count(Query[] queries)
{
try {
log.debug("calling persistence service...");
DataAccessService service = locateService();
org.plasma.query.model.Query[] queryModels = new org.plasma.query.model.Query[queries.length];
for (int i = 0; i < queries.length; i++)
queryModels[i] = (org.plasma.query.model.Query)queries[i].getModel();
return service.count(queryModels);
}
catch (Exception e) {
log.info("caught4: " + e.getClass().getName());
throw new DataAccessException(e);
}
}
public void commit(DataGraph dataGraph, String username) {
SnapshotMap idMap = service.commit(dataGraph, username);
List changedObjects = dataGraph.getChangeSummary().getChangedDataObjects();
for (DataObject dataObject : changedObjects)
if (!dataGraph.getChangeSummary().isDeleted(dataObject))
((PlasmaNode)dataObject).getDataObject().reset(idMap, username);
dataGraph.getChangeSummary().endLogging();
dataGraph.getChangeSummary().beginLogging();
if (log.isDebugEnabled()) {
log.debug("committed 1 data-graph");
}
}
public void commit(DataGraph[] dataGraphs, String username) {
SnapshotMap idMap = service.commit(dataGraphs, username);
for (int i = 0; i < dataGraphs.length; i++) {
DataGraph dataGraph = dataGraphs[i];
List changedObjects = dataGraph.getChangeSummary().getChangedDataObjects();
for (DataObject dataObject : changedObjects)
if (!dataGraph.getChangeSummary().isDeleted(dataObject))
((PlasmaNode)dataObject).getDataObject().reset(idMap, username);
dataGraph.getChangeSummary().endLogging();
dataGraph.getChangeSummary().beginLogging();
}
if (log.isDebugEnabled()) {
log.debug("committed 1 data-graph");
}
}
private DataAccessService locateService() throws Exception
{
if (service == null) {
service = (DataAccessService)ServiceLocator.getInstance().getStub(DataAccessService.class);
}
return service;
}
}
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