org.obiba.onyx.engine.variable.export.OnyxDataExportReader.java Source code

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Here is the source code for org.obiba.onyx.engine.variable.export.OnyxDataExportReader.java

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/*******************************************************************************
 * Copyright 2008(c) The OBiBa Consortium. All rights reserved.
 * 
 * This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/
package org.obiba.onyx.engine.variable.export;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.obiba.magma.filter.ExcludeAllFilter;
import org.obiba.magma.filter.JavaScriptFilter;
import org.obiba.magma.filter.VariableAttributeFilter;
import org.obiba.magma.filter.VariableNameFilter;
import org.springframework.core.io.Resource;

import com.thoughtworks.xstream.XStream;

/**
 * Reads the {@link OnyxDataExport} XML configuration file.
 */
public class OnyxDataExportReader {
    private XStream xstream;

    private Resource[] resources;

    public OnyxDataExportReader() {
        xstream = new XStream();
        xstream.alias("destinations", List.class);
        xstream.alias("destination", OnyxDataExportDestination.class);
        xstream.alias("excludeAll", ExcludeAllFilter.class);
        xstream.alias("script", JavaScriptFilter.class);
        xstream.alias("variableName", VariableNameFilter.class);
        xstream.alias("variableAttribute", VariableAttributeFilter.class);
        xstream.autodetectAnnotations(true);
    }

    public void setResources(Resource[] resources) {
        this.resources = resources;
    }

    @SuppressWarnings("unchecked")
    public List<OnyxDataExportDestination> read() throws IOException {
        List<OnyxDataExportDestination> onyxDestinations = new ArrayList<OnyxDataExportDestination>();
        for (int i = 0; i < this.resources.length; i++) {
            Resource resource = this.resources[i];

            if (resource.exists()) {
                onyxDestinations
                        .addAll((List<OnyxDataExportDestination>) xstream.fromXML(resource.getInputStream()));
            }
        }

        return onyxDestinations;
    }
}