annis.gui.controller.FrequencyBackgroundJob.java Source code

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Here is the source code for annis.gui.controller.FrequencyBackgroundJob.java

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/*
 * Copyright 2014 Corpuslinguistic working group Humboldt University Berlin.
 *
 * 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.controller;

import annis.gui.frequency.FrequencyQueryPanel;
import annis.gui.objects.FrequencyQuery;
import annis.libgui.Helper;
import annis.service.objects.FrequencyTable;
import com.sun.jersey.api.client.ClientHandlerException;
import com.sun.jersey.api.client.UniformInterfaceException;
import com.sun.jersey.api.client.WebResource;
import com.vaadin.ui.Notification;
import com.vaadin.ui.UI;
import java.util.concurrent.Callable;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 *
 * @author Thomas Krause <krauseto@hu-berlin.de>
 */
public class FrequencyBackgroundJob implements Callable<FrequencyTable> {
    private static final Logger log = LoggerFactory.getLogger(FrequencyBackgroundJob.class);

    private final UI ui;

    private final FrequencyQuery query;

    private final FrequencyQueryPanel panel;

    public FrequencyBackgroundJob(UI ui, FrequencyQuery query, FrequencyQueryPanel panel) {
        this.ui = ui;
        this.query = query;
        this.panel = panel;
    }

    @Override
    public FrequencyTable call() throws Exception {
        final FrequencyTable t = loadBeans();
        ui.access(new Runnable() {
            @Override
            public void run() {
                panel.showResult(t, query);
            }
        });
        return t;
    }

    private FrequencyTable loadBeans() {
        FrequencyTable result = new FrequencyTable();
        WebResource annisResource = Helper.getAnnisWebResource();
        try {
            annisResource = annisResource.path("query").path("search").path("frequency")
                    .queryParam("q", Helper.encodeJersey(query.getQuery()))
                    .queryParam("corpora", StringUtils.join(query.getCorpora(), ","))
                    .queryParam("fields", query.getFrequencyDefinition().toString());
            result = annisResource.get(FrequencyTable.class);
        } catch (UniformInterfaceException ex) {
            String message;
            if (ex.getResponse().getStatus() == 400) {
                message = ex.getResponse().getEntity(String.class);
            } else if (ex.getResponse().getStatus() == 504) {
                message = "Timeout: query exeuction took too long";
            } else {
                message = "unknown error: " + ex;
                log.error(ex.getResponse().getEntity(String.class), ex);
            }
            Notification.show(message, Notification.Type.WARNING_MESSAGE);
        } catch (ClientHandlerException ex) {
            log.error("could not execute REST call to query frequency", ex);
        }
        return result;
    }

}