annis.gui.exporter.CSVExporter.java Source code

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Here is the source code for annis.gui.exporter.CSVExporter.java

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/*
 * Copyright 2009-2011 Collaborative Research Centre SFB 632 
 *
 * 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.
 */
package annis.gui.exporter;

import annis.libgui.Helper;
import com.google.common.eventbus.EventBus;
import com.sun.jersey.api.client.ClientHandlerException;
import com.sun.jersey.api.client.UniformInterfaceException;
import com.sun.jersey.api.client.WebResource;
import com.vaadin.server.Page;
import com.vaadin.ui.Notification;
import java.io.IOException;
import java.io.InputStream;
import java.io.Serializable;
import java.io.Writer;
import java.util.List;
import java.util.Set;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.LoggerFactory;

public class CSVExporter implements Exporter, Serializable {

    private static final org.slf4j.Logger log = LoggerFactory.getLogger(CSVExporter.class);

    @Override
    public boolean convertText(String queryAnnisQL, int contextLeft, int contextRight, Set<String> corpora,
            List<String> keys, String argsAsString, WebResource annisResource, Writer out, EventBus eventBus) {
        //this is a full result export

        try {
            WebResource res = annisResource.path("search").path("matrix").queryParam("csv", "true")
                    .queryParam("corpora", StringUtils.join(corpora, ","))
                    .queryParam("q", Helper.encodeJersey(queryAnnisQL));

            if (argsAsString.startsWith("metakeys=")) {
                res = res.queryParam("metakeys", argsAsString.substring("metakeys".length() + 1));
            }

            try (InputStream result = res.get(InputStream.class)) {
                IOUtils.copy(result, out);
            }

            out.flush();

            return true;
        } catch (UniformInterfaceException ex) {
            log.error(null, ex);
            Notification n = new Notification("Service exception", ex.getResponse().getEntity(String.class),
                    Notification.Type.WARNING_MESSAGE, true);
            n.show(Page.getCurrent());
        } catch (ClientHandlerException ex) {
            log.error(null, ex);
        } catch (IOException ex) {
            log.error(null, ex);
        }
        return false;
    }

    @Override
    public boolean isCancelable() {
        return false;
    }

}