io.mapzone.arena.csw.GetProposalsRequest.java Source code

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Here is the source code for io.mapzone.arena.csw.GetProposalsRequest.java

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/* 
 * polymap.org
 * Copyright (C) 2016, the @authors. All rights reserved.
 *
 * This 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 3.0 of
 * the License, or (at your option) any later version.
 *
 * This software 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.
 */
package io.mapzone.arena.csw;

import static io.mapzone.arena.csw.Namespaces.CSW;
import static io.mapzone.arena.csw.Namespaces.OGC;

import java.util.List;

import java.io.InputStream;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.google.common.collect.FluentIterable;

import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.NullProgressMonitor;

import org.polymap.core.runtime.config.Config2;
import org.polymap.core.runtime.config.DefaultInt;
import org.polymap.core.runtime.config.Mandatory;

import io.mapzone.arena.csw.jaxb.ElementSetXML;
import io.mapzone.arena.csw.jaxb.GetRecordsResponseXML;
import io.mapzone.arena.csw.jaxb.SearchResultsXML;

/**
 * Non-CSW request to get fulltext proposals. Basically this is a "GetRecords"
 * request outputSchema "csw:Proposals", the constraint is send as CqlText.
 * 
 * @author Falko Brutigam
 */
public class GetProposalsRequest extends CswRequest<List<String>> {

    private static final Log log = LogFactory.getLog(GetProposalsRequest.class);

    /**
     * Inbound: 
     */
    @Mandatory
    public Config2<GetProposalsRequest, String> constraint;

    /**
     * Inbound: Maximum number of records in result set.
     */
    @Mandatory
    @DefaultInt(50)
    public Config2<GetProposalsRequest, Integer> maxRecords;

    public GetProposalsRequest() {
        request.set("GetRecords");
    }

    @Override
    protected void prepare(IProgressMonitor monitor) throws Exception {
        out().writeAttribute("resultType", "results");
        out().writeAttribute("maxRecords", maxRecords.get().toString());
        out().writeAttribute("startPosition", "1");
        out().writeAttribute("outputFormat", "application/xml");
        out().writeAttribute("outputSchema", "csw:Proposals");

        writeElement(CSW, "Query", () -> {
            writeElement(CSW, "ElementSetName", () -> out().writeCharacters(ElementSetXML.SUMMARY.value()));

            writeElement(CSW, "Constraint", () -> {
                out().writeAttribute("version", "1.1.0");
                out().writeNamespace("ogc", OGC);
                writeElement(OGC, "CqlText", () -> out().writeCharacters(constraint.get()));
            });
        });
    }

    @Override
    protected List<String> handleResponse(InputStream in, IProgressMonitor monitor) throws Exception {
        GetRecordsResponseXML response = readObject(in, GetRecordsResponseXML.class);

        SearchResultsXML results = response.searchResults;
        return FluentIterable.from(results.records).transform(r -> r.subject.stream().findAny().get()).toList();
    }

    // test ***********************************************

    /**
     * Test.
     */
    public static void main(String[] args) throws Exception {
        GetProposalsRequest getProposals = new GetProposalsRequest().constraint.put("test").baseUrl
                .put("http://localhost:8090/csw");

        List<String> rs = getProposals.execute(new NullProgressMonitor());
        System.out.println("Results:" + rs.size());
        System.out.println(rs);
    }

}