Package org.pentaho.reporting.engine.classic.extensions.datasources.pmd.loader

Source Code of org.pentaho.reporting.engine.classic.extensions.datasources.pmd.loader.MetadataModelResourceFactory

/*!
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* Copyright (c) 2002-2013 Pentaho Corporation..  All rights reserved.
*/

package org.pentaho.reporting.engine.classic.extensions.datasources.pmd.loader;

import java.io.IOException;
import java.io.InputStream;

import org.pentaho.metadata.model.Domain;
import org.pentaho.metadata.repository.IMetadataDomainRepository;
import org.pentaho.metadata.repository.InMemoryMetadataDomainRepository;
import org.pentaho.metadata.util.XmiParser;
import org.pentaho.reporting.libraries.resourceloader.FactoryParameterKey;
import org.pentaho.reporting.libraries.resourceloader.Resource;
import org.pentaho.reporting.libraries.resourceloader.ResourceCreationException;
import org.pentaho.reporting.libraries.resourceloader.ResourceData;
import org.pentaho.reporting.libraries.resourceloader.ResourceFactory;
import org.pentaho.reporting.libraries.resourceloader.ResourceKey;
import org.pentaho.reporting.libraries.resourceloader.ResourceLoadingException;
import org.pentaho.reporting.libraries.resourceloader.ResourceManager;
import org.pentaho.reporting.libraries.resourceloader.SimpleResource;

public class MetadataModelResourceFactory implements ResourceFactory
{
  public static final FactoryParameterKey DOMAIN_ID = new FactoryParameterKey("domain-id");

  public MetadataModelResourceFactory()
  {
  }

  public Resource create(final ResourceManager manager,
                         final ResourceData data,
                         final ResourceKey context) throws ResourceCreationException, ResourceLoadingException
  {
    final InputStream stream = data.getResourceAsStream(manager);
    final long version = data.getVersion(manager);
    final ResourceKey key = data.getKey();
    final Object o = key.getFactoryParameters().get(DOMAIN_ID);
    if (o == null)
    {
      throw new ResourceLoadingException("Your resource-key must have a domain-id factory key defined.");
    }
    try
    {
      final InMemoryMetadataDomainRepository repo = new InMemoryMetadataDomainRepository();
      final XmiParser parser = new XmiParser();
      final Domain domain = parser.parseXmi(stream);
      domain.setId(String.valueOf(o));
      repo.storeDomain(domain, true);
      return new SimpleResource(key, repo, IMetadataDomainRepository.class, version);
    }
    catch (ResourceCreationException e)
    {
      throw e;
    }
    catch (ResourceLoadingException e)
    {
      throw e;
    }
    catch (IOException ioe)
    {
      throw new ResourceLoadingException("IOError", ioe);
    }
    catch (Exception e)
    {
      throw new ResourceCreationException("Generic Error", e);
    }
    finally
    {
      try
      {
        stream.close();
      }
      catch (IOException e)
      {
        // ignore ..
      }
    }
  }

  public Class getFactoryType()
  {
    return IMetadataDomainRepository.class;
  }

  public void initializeDefaults()
  {

  }
}
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