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/*
* Copyright 2003 - 2011 The eFaps Team
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Revision: $Rev: 6961 $
* Last Changed: $Date: 2011-08-18 12:11:27 -0500 (Thu, 18 Aug 2011) $
* Last Changed By: $Author: [email protected] $
*/
package org.efaps.db.store;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Calendar;
import javax.jcr.AccessDeniedException;
import javax.jcr.Binary;
import javax.jcr.InvalidItemStateException;
import javax.jcr.ItemExistsException;
import javax.jcr.LoginException;
import javax.jcr.NoSuchWorkspaceException;
import javax.jcr.Node;
import javax.jcr.Property;
import javax.jcr.ReferentialIntegrityException;
import javax.jcr.Repository;
import javax.jcr.RepositoryException;
import javax.jcr.Session;
import javax.jcr.SimpleCredentials;
import javax.jcr.lock.LockException;
import javax.jcr.nodetype.ConstraintViolationException;
import javax.jcr.nodetype.NoSuchNodeTypeException;
import javax.jcr.nodetype.NodeType;
import javax.jcr.version.VersionException;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.transaction.xa.XAException;
import javax.transaction.xa.Xid;
import org.efaps.db.Context;
import org.efaps.db.Instance;
import org.efaps.db.transaction.ConnectionResource;
import org.efaps.db.wrapper.SQLSelect;
import org.efaps.util.EFapsException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Store Resource that uses the Content Repository for Java Technology API (JCR).
*
* @author The eFaps Team
* @version $Id: JCRStoreResource.java 6961 2011-08-18 17:11:27Z [email protected] $
*/
public class JCRStoreResource
extends AbstractStoreResource
{
/**
* Name of the table the content is stored in.
*/
public static final String TABLENAME_STORE = "T_CMGENSTOREJCR";
/**
* Name of the column the content is stored in.
*/
public static final String COLNAME_IDENTIFIER = "IDENTIFIER";
/**
* Logging instance used in this class.
*/
private static final Logger LOG = LoggerFactory.getLogger(JCRStoreResource.class);
/**
* Property Name to define if the type if is used to define a sub
* directory.
*/
private static final String PROPERTY_WORKSPACENAME = "JCRWorkSpaceName";
/**
* Property Name to define if the file will be deleted on deletion of the related object.
*/
private static final String PROPERTY_ENABLEDELETION = "JCREnableDeletion";
/**
* Property Name to define if the file will be deleted on deletion of the related object.
*/
private static final String PROPERTY_USERNAME = "JCRUserName";
/**
* Property Name to define if the file will be deleted on deletion of the related object.
*/
private static final String PROPERTY_PASSWORD = "JCRPassword";
/**
* The repository for this JCR Store Resource.
*/
private Repository repository;
/**
* Identifier for the node to be accessed.
*/
private String identifier;
/**
* Session for JCR access.
*/
private Session session;
/**
* {@inheritDoc}
*/
@Override
public void initialize(final Instance _instance,
final Store _store)
throws EFapsException
{
super.initialize(_instance, _store);
try {
final InitialContext ctx = new InitialContext();
this.repository = (Repository) ctx.lookup(getStore().getProperty(Store.PROPERTY_JNDINAME));
if (JCRStoreResource.LOG.isDebugEnabled()) {
final String name = this.repository.getDescriptor(Repository.REP_NAME_DESC);
JCRStoreResource.LOG.debug("Successfully retrieved '%s' repository from JNDI", new Object[]{ name });
}
String username = getProperties().get(JCRStoreResource.PROPERTY_USERNAME);
if (username == null) {
username = Context.getThreadContext().getPerson().getName();
}
String passwd = getProperties().get(JCRStoreResource.PROPERTY_PASSWORD);
if (passwd == null) {
passwd = "efaps";
}
this.session = this.repository.login(new SimpleCredentials(username, passwd.toCharArray()),
getProperties().get(JCRStoreResource.PROPERTY_WORKSPACENAME));
} catch (final NamingException e) {
throw new EFapsException(JCRStoreResource.class, "initialize.NamingException", e);
} catch (final LoginException e) {
throw new EFapsException(JCRStoreResource.class, "initialize.LoginException", e);
} catch (final NoSuchWorkspaceException e) {
throw new EFapsException(JCRStoreResource.class, "initialize.NoSuchWorkspaceException", e);
} catch (final RepositoryException e) {
throw new EFapsException(JCRStoreResource.class, "initialize.RepositoryException", e);
}
}
/**
* {@inheritDoc}
*/
@Override
protected int add2Select(final SQLSelect _select)
{
_select.column(2, "ID").column(2, JCRStoreResource.COLNAME_IDENTIFIER)
.leftJoin(JCRStoreResource.TABLENAME_STORE, 2, "ID", 0, "ID");
return 1;
}
/**
* {@inheritDoc}
*/
@Override
protected void getAdditionalInfo(final ResultSet _rs)
throws SQLException
{
final String identiferTmp = _rs.getString(6);
if (identiferTmp != null && !identiferTmp.isEmpty()) {
this.identifier = identiferTmp.trim();
}
}
/**
* {@inheritDoc}
*/
@Override
protected void insertDefaults()
throws EFapsException
{
super.insertDefaults();
if (!getExist()[1] && getGeneralID() != null) {
try {
final ConnectionResource res = Context.getThreadContext().getConnectionResource();
final Connection con = res.getConnection();
Context.getDbType().newInsert(JCRStoreResource.TABLENAME_STORE, "ID", false)
.column("ID", getGeneralID())
.column(JCRStoreResource.COLNAME_IDENTIFIER, "NEW")
.execute(con);
res.commit();
} catch (final SQLException e) {
throw new EFapsException(JCRStoreResource.class, "insertDefaults", e);
}
}
}
/**
* {@inheritDoc}
*/
@Override
public long write(final InputStream _in,
final long _size,
final String _fileName)
throws EFapsException
{
final JCRBinary bin = new JCRBinary(_in);
long size = _size;
try {
final Node rootNode = this.session.getRootNode();
final Node fileNode = rootNode.addNode(getInstance().getOid(), NodeType.NT_FILE);
final Node resNode = fileNode.addNode(Property.JCR_CONTENT, NodeType.NT_RESOURCE);
resNode.setProperty(Property.JCR_DATA, bin);
resNode.setProperty(Property.JCR_LAST_MODIFIED, Calendar.getInstance());
resNode.setProperty(Property.JCR_LAST_MODIFIED_BY, Context.getThreadContext().getPerson().getName());
setIdentifer(fileNode.getIdentifier());
// if size is unkown!
if (size < 0) {
final byte[] buffer = new byte[1024];
int length = 1;
size = 0;
final OutputStream out = new ByteArrayOutputStream();
while (length > 0) {
length = _in.read(buffer);
if (length > 0) {
out.write(buffer, 0, length);
size += length;
}
}
}
} catch (final RepositoryException e) {
throw new EFapsException(JCRStoreResource.class, "write.RepositoryException", e);
} catch (final IOException e) {
throw new EFapsException(JCRStoreResource.class, "write.IOException", e);
}
setFileInfo(_fileName, size);
return size;
}
/**
* Set the identifier in the eFaps DataBase.
* @param _identifier identifer to set
* @throws EFapsException on error
*/
protected void setIdentifer(final String _identifier)
throws EFapsException
{
if (!_identifier.equals(this.identifier)) {
ConnectionResource res = null;
try {
res = Context.getThreadContext().getConnectionResource();
final StringBuffer cmd = new StringBuffer().append("update ")
.append(JCRStoreResource.TABLENAME_STORE).append(" set ")
.append(JCRStoreResource.COLNAME_IDENTIFIER).append("=? ")
.append("where ID =").append(getGeneralID());
final PreparedStatement stmt = res.getConnection().prepareStatement(cmd.toString());
try {
stmt.setString(1, _identifier);
stmt.execute();
} finally {
stmt.close();
}
res.commit();
this.identifier = _identifier;
} catch (final EFapsException e) {
res.abort();
throw e;
} catch (final SQLException e) {
res.abort();
throw new EFapsException(JDBCStoreResource.class, "write.SQLException", e);
}
}
}
/**
* A JCR Store resource does not use compression from eFaps Side.
* @return Compress.NONE
*/
@Override
protected Compress getCompress()
{
return Compress.NONE;
}
/**
* {@inheritDoc}
*/
@Override
public InputStream read()
throws EFapsException
{
InputStream input = null;
try {
final Node fileNode = this.session.getNodeByIdentifier(this.identifier);
final Node resNode = fileNode.getNode(Property.JCR_CONTENT);
final Property data = resNode.getProperty(Property.JCR_DATA);
final Binary bin = data.getBinary();
input = new JCRStoreResourceInputStream(this, bin);
} catch (final RepositoryException e) {
throw new EFapsException(JCRStoreResource.class, "read.RepositoryException", e);
} catch (final IOException e) {
throw new EFapsException(JCRStoreResource.class, "read.IOException", e);
}
return input;
}
/**
* {@inheritDoc}
*/
@Override
public void delete()
throws EFapsException
{
if ("TRUE".equalsIgnoreCase(getProperties().get(JCRStoreResource.PROPERTY_ENABLEDELETION))) {
try {
final Node fileNode = this.session.getNodeByIdentifier(this.identifier);
fileNode.remove();
} catch (final RepositoryException e) {
throw new EFapsException(JCRStoreResource.class, "delete.RepositoryException", e);
}
}
}
/**
* The method is called from the transaction manager if the complete
* transaction is completed.
*
* @param _xid global transaction identifier (not used, because each
* file with the file id gets a new VFS store resource
* instance)
* @param _onePhase true if it is a one phase commitment transaction
* (not used)
* @throws XAException if any exception occurs (catch on
* {@link java.lang.Throwable})
*/
@Override
public void commit(final Xid _xid,
final boolean _onePhase)
throws XAException
{
try {
if (this.session.hasPendingChanges()) {
this.session.save();
}
this.session.logout();
} catch (final AccessDeniedException e) {
throw new XAException("AccessDeniedException");
} catch (final ItemExistsException e) {
throw new XAException("ItemExistsException");
} catch (final ReferentialIntegrityException e) {
throw new XAException("ReferentialIntegrityException");
} catch (final ConstraintViolationException e) {
throw new XAException("AccessDeniedException");
} catch (final InvalidItemStateException e) {
throw new XAException("InvalidItemStateException");
} catch (final VersionException e) {
throw new XAException("VersionException");
} catch (final LockException e) {
throw new XAException(XAException.XA_RBDEADLOCK);
} catch (final NoSuchNodeTypeException e) {
throw new XAException("NoSuchNodeTypeException");
} catch (final RepositoryException e) {
throw new XAException("RepositoryException");
}
}
/**
* Tells the resource manager to forget about a heuristically completed
* transaction branch.
*
* @param _xid global transaction identifier (not used, because each file
* with the file id gets a new VFS store resource instance)
*/
@Override
public void forget(final Xid _xid)
{
if (JCRStoreResource.LOG.isDebugEnabled()) {
JCRStoreResource.LOG.debug("forget (xid = " + _xid + ")");
}
}
/**
* Obtains the current transaction timeout value set for this XAResource
* instance.
*
* @return always 0
*/
public int getTransactionTimeout()
{
if (JCRStoreResource.LOG.isDebugEnabled()) {
JCRStoreResource.LOG.debug("getTransactionTimeout");
}
return 0;
}
/**
* Ask the resource manager to prepare for a transaction commit of the
* transaction specified in xid (used for 2-phase commits).
*
* @param _xid Xid
* @return always 0, because not 2 phase commit
*/
public int prepare(final Xid _xid)
{
if (JCRStoreResource.LOG.isDebugEnabled()) {
JCRStoreResource.LOG.debug("prepare (xid=" + _xid + ")");
}
return 0;
}
/**
* Obtains a list of prepared transaction branches from a resource manager.
*
* @param _flag flag
* @return always null
*/
public Xid[] recover(final int _flag)
{
if (JCRStoreResource.LOG.isDebugEnabled()) {
JCRStoreResource.LOG.debug("recover (flag = " + _flag + ")");
}
return null;
}
/**
* On rollback no save is send to the session..
*
* @param _xid global transaction identifier (not used, because each
* file with the file id gets a new VFS store resource
* instance)
* @throws XAException if any exception occurs (catch on
* {@link java.lang.Throwable})
*/
@Override
public void rollback(final Xid _xid)
throws XAException
{
this.session.logout();
}
/**
* Sets the current transaction timeout value for this XAResource instance.
*
* @param _seconds number of seconds
* @return always true
*/
public boolean setTransactionTimeout(final int _seconds)
{
if (JCRStoreResource.LOG.isDebugEnabled()) {
JCRStoreResource.LOG.debug("setTransactionTimeout (seconds = " + _seconds + ")");
}
return true;
}
/**
* Implementation of Binary from JCR.
*/
private static class JCRBinary
implements Binary
{
/**
* The InpuStrema this Binary belongs to.
*/
private InputStream stream;
/**
* @param _in InputStream
*/
public JCRBinary(final InputStream _in)
{
this.stream = _in;
}
/**
* Returns an {@link InputStream} representation of this value. Each call to
* getStream() returns a new stream. The API consumer is
* responsible for calling close() on the returned stream.
*
* If {@link #dispose()} has been called on this Binary
* object, then this method will throw the runtime exception
* {@link java.lang.IllegalStateException}.
*
* @return A stream representation of this value.
* @throws RepositoryException if an error occurs.
*/
@Override
public InputStream getStream()
throws RepositoryException
{
return this.stream;
}
/**
* Reads successive bytes from the specified position in this
* Binary into the passed byte array until either the byte
* array is full or the end of the Binary is encountered.
*
* If {@link #dispose()} has been called on this Binary
* object, then this method will throw the runtime exception
* {@link java.lang.IllegalStateException}.
*
* @param _b the buffer into which the data is read.
* @param _position the position in this Binary from which to start reading
* bytes.
* @return the number of bytes read into the buffer, or -1 if there is no
* more data because the end of the Binary has been reached.
* @throws IOException if an I/O error occurs.
* @throws NullPointerException if b is null.
* @throws IllegalArgumentException if offset is negative.
* @throws RepositoryException if another error occurs.
*/
@Override
public int read(final byte[] _b,
final long _position)
throws IOException, RepositoryException
{
return this.stream.read(_b);
}
/**
* Returns the size of this Binary value in bytes.
*
* If {@link #dispose()} has been called on this Binary
* object, then this method will throw the runtime exception
* {@link java.lang.IllegalStateException}.
*
* @return the size of this value in bytes.
* @throws RepositoryException if an error occurs.
*/
@Override
public long getSize()
throws RepositoryException
{
return 0;
}
/**
* Releases all resources associated with this Binary object
* and informs the repository that these resources may now be reclaimed.
* An application should call this method when it is finished with the
* Binary object.
*/
@Override
public void dispose()
{
try {
this.stream.close();
} catch (final IOException e) {
JCRStoreResource.LOG.error("Error on disposal of inpustream.", e);
}
}
}
/**
* ResourceInputStream implementation.
*/
private class JCRStoreResourceInputStream
extends StoreResourceInputStream
{
/**
* @param _store Strore this InputStream belongs to
* @param _bin Binary
* @throws IOException on error
* @throws RepositoryException on error
*/
protected JCRStoreResourceInputStream(final AbstractStoreResource _store,
final Binary _bin)
throws IOException, RepositoryException
{
super(_store, _bin.getStream());
}
}
}