org.deegree.console.metadata.ResourceManagerMetadata.java Source code

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Here is the source code for org.deegree.console.metadata.ResourceManagerMetadata.java

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//$HeadURL$
/*----------------------------------------------------------------------------
 This file is part of deegree, http://deegree.org/
 Copyright (C) 2001-2011 by:
 - Department of Geography, University of Bonn -
 and
 - lat/lon GmbH -
    
 This library is free software; you can redistribute it and/or modify it under
 the terms of the GNU Lesser General Public License as published by the Free
 Software Foundation; either version 2.1 of the License, or (at your option)
 any later version.
 This library 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.
 You should have received a copy of the GNU Lesser General Public License
 along with this library; if not, write to the Free Software Foundation, Inc.,
 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
    
 Contact information:
    
 lat/lon GmbH
 Aennchenstr. 19, 53177 Bonn
 Germany
 http://lat-lon.de/
    
 Department of Geography, University of Bonn
 Prof. Dr. Klaus Greve
 Postfach 1147, 53001 Bonn
 Germany
 http://www.geographie.uni-bonn.de/deegree/
    
 e-mail: info@deegree.org
 ----------------------------------------------------------------------------*/
package org.deegree.console.metadata;

import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;

import org.apache.commons.io.IOUtils;
import org.deegree.workspace.ResourceManager;
import org.deegree.workspace.ResourceProvider;
import org.deegree.workspace.Workspace;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * 
 * @author <a href="mailto:schmitz@lat-lon.de">Andreas Schmitz</a>
 * @author last edited by: $Author$
 * 
 * @version $Revision$, $Date$
 */
public class ResourceManagerMetadata implements Comparable<ResourceManagerMetadata> {

    private static Logger LOG = LoggerFactory.getLogger(ResourceManagerMetadata.class);

    private String name, category;

    private String startView = "/console/jsf/resources";

    private final ResourceManager<?> mgr;

    private final Map<String, ResourceProvider<?>> nameToProvider = new HashMap<String, ResourceProvider<?>>();

    private List<ResourceProvider<?>> providers = new ArrayList<ResourceProvider<?>>();

    private final List<String> providerNames = new ArrayList<String>();

    private final Workspace workspace;

    private ResourceManagerMetadata(ResourceManager<?> mgr, Workspace workspace) {
        this.workspace = workspace;
        if (mgr.getMetadata() != null) {
            for (ResourceProvider<?> provider : mgr.getProviders()) {
                ResourceProviderMetadata providerMd = ResourceProviderMetadata.getMetadata(provider);
                if ("LockDbProviderProvider".equals(providerMd.getName())) {
                    continue;
                }
                providers.add(provider);
                providerNames.add(providerMd.getName());
                nameToProvider.put(providerMd.getName(), provider);
            }
        } else {
            providers = Collections.emptyList();
        }

        String className = mgr.getClass().getName();
        String metadataUrl = "/META-INF/console/resourcemanager/" + className;
        URL url = ResourceManagerMetadata.class.getResource(metadataUrl);
        if (url != null) {
            LOG.debug("Loading resource manager metadata from '" + url + "'");
            Properties props = new Properties();
            InputStream is = null;
            try {
                is = url.openStream();
                props.load(is);
                name = props.getProperty("name");
                if (name != null) {
                    name = name.trim();
                }
                category = props.getProperty("category");
                if (props.containsKey("start_view")) {
                    startView = props.getProperty("start_view").trim();
                }
            } catch (IOException e) {
                LOG.error(e.getMessage(), e);
            } finally {
                IOUtils.closeQuietly(is);
            }
        } else {
            throw new RuntimeException("Internal error: File '" + metadataUrl + "' missing on classpath.");
        }
        this.mgr = mgr;
    }

    public static synchronized ResourceManagerMetadata getMetadata(ResourceManager<?> rm, Workspace workspace) {
        ResourceManagerMetadata md = new ResourceManagerMetadata(rm, workspace);
        if (md.name == null) {
            return null;
        }
        return md;
    }

    public String getName() {
        return name;
    }

    public String getCategory() {
        return category;
    }

    public String getStartView() {
        return startView;
    }

    public ResourceManager<?> getManager() {
        return mgr;
    }

    public String getManagerClass() {
        return mgr.getClass().getName();
    }

    public ResourceProvider<?> getProvider(String name) {
        return nameToProvider.get(name);
    }

    public List<ResourceProvider<?>> getProviders() {
        return providers;
    }

    public List<String> getProviderNames() {
        return providerNames;
    }

    public boolean getMultipleProviders() {
        return providers.size() > 1;
    }

    public boolean getHasErrors() {
        return workspace.getErrorHandler().hasErrors();
    }

    @Override
    public int compareTo(ResourceManagerMetadata o) {
        return this.name.compareTo(o.name);
    }
}