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Signed-off-by: Bart Hanssens <[email protected]>
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116 changes: 116 additions & 0 deletions
116
scrapers/src/main/java/be/gov/data/scrapers/metawal/GeonetMetawal.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,116 @@ | ||
| /* | ||
| * Copyright (c) 2024, FPS BOSA DG SD | ||
| * All rights reserved. | ||
| * | ||
| * Redistribution and use in source and binary forms, with or without | ||
| * modification, are permitted provided that the following conditions are met: | ||
| * | ||
| * * Redistributions of source code must retain the above copyright notice, this | ||
| * list of conditions and the following disclaimer. | ||
| * * Redistributions in binary form must reproduce the above copyright notice, | ||
| * this list of conditions and the following disclaimer in the documentation | ||
| * and/or other materials provided with the distribution. | ||
| * | ||
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | ||
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | ||
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | ||
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | ||
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | ||
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | ||
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | ||
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | ||
| * POSSIBILITY OF SUCH DAMAGE. | ||
| */ | ||
| package be.gov.data.scrapers.metawal; | ||
|
|
||
| import be.gov.data.helpers.Storage; | ||
| import be.gov.data.scrapers.Cache; | ||
| import be.gov.data.scrapers.Dcat; | ||
| import be.gov.data.scrapers.Page; | ||
| import java.io.ByteArrayInputStream; | ||
| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.net.MalformedURLException; | ||
| import java.net.URL; | ||
| import java.nio.charset.StandardCharsets; | ||
| import java.util.Properties; | ||
| import java.util.Set; | ||
| import org.eclipse.rdf4j.repository.RepositoryException; | ||
| import org.eclipse.rdf4j.rio.RDFFormat; | ||
| import org.eclipse.rdf4j.rio.RDFParseException; | ||
|
|
||
| /** | ||
| * MetaWal via DCAT-AP catalog. | ||
| * | ||
| * @see https://metawal.wallonie.be/ | ||
| * @author Bart Hanssens | ||
| */ | ||
| public class GeonetMetawal extends Dcat { | ||
| @Override | ||
| public void generateDcat(Cache cache, Storage store) throws RepositoryException, MalformedURLException { | ||
| Set<URL> urls = cache.retrievePageList(); | ||
| for (URL url: urls) { | ||
| Page page = cache.retrievePage(url).get("all"); | ||
| // fix buggy input | ||
| String content = page.getContent(); | ||
| content = content.replace(" xsi:type=\"xs:string\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xs=\"http://www.w3.org/2001/XMLSchema\"", ""); | ||
| try (InputStream in = new ByteArrayInputStream(content.getBytes(StandardCharsets.UTF_8))) { | ||
| store.add(in, RDFFormat.RDFXML); | ||
| } catch (RDFParseException | IOException ex) { | ||
| if (ex.getMessage().contains("Premature end")) { | ||
| LOG.warn("Premature end of file in {}", url); | ||
| } else { | ||
| throw new RepositoryException(url.toString(), ex); | ||
| } | ||
| } | ||
| } | ||
| generateCatalog(store); | ||
| } | ||
|
|
||
| /** | ||
| * Scrape DCAT catalog. | ||
| * | ||
| * @param cache | ||
| * @throws IOException | ||
| */ | ||
| @Override | ||
| protected void scrapeCat(Cache cache) throws IOException { | ||
| int size = 20; | ||
|
|
||
| for(int start = 0; ;start += size) { | ||
| URL url = new URL(getBase().toString() + "?startindex=" + start + "&limit=" + size + "&f=dcat"); | ||
| String xml = makeRequest(url); | ||
| if (!xml.contains("Dataset") && !xml.contains("DataService")) { | ||
| LOG.info("Last (empty) page"); | ||
| break; | ||
| } | ||
| cache.storePage(url, "all", new Page(url, xml)); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public void scrape() throws IOException { | ||
| LOG.info("Start scraping"); | ||
| Cache cache = getCache(); | ||
|
|
||
| Set<URL> urls = cache.retrievePageList(); | ||
| if (urls.isEmpty()) { | ||
| scrapeCat(cache); | ||
| } | ||
| LOG.info("Done scraping"); | ||
| } | ||
|
|
||
| /** | ||
| * Constructor. | ||
| * | ||
| * @param prop | ||
| * @throws IOException | ||
| */ | ||
| public GeonetMetawal(Properties prop) throws IOException { | ||
| super(prop); | ||
| setName("metawal"); | ||
| } | ||
|
|
||
| } |
11 changes: 6 additions & 5 deletions
11
scrapers/src/main/resources/be/gov/data/scrapers/bira/sparql-downloadURL.qry
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,11 +1,12 @@ | ||
| # Fix temporal resolution | ||
| # Move accessURL to downloadURL | ||
|
|
||
| PREFIX dcat: <http://www.w3.org/ns/dcat#> | ||
| PREFIX xsd: <http://www.w3.org/2001/XMLSchema#> | ||
|
|
||
| DELETE | ||
| { ?s dcat:temporalResolution "P1H"^^xsd:duration } | ||
| { ?s dcat:accessURL ?url } | ||
| INSERT | ||
| { ?s dcat:temporalResolution "PT1H"^^xsd:duration } | ||
| { ?s dcat:downloadURL ?url } | ||
| WHERE | ||
| { ?s dcat:temporalResolution "P1H"^^xsd:duration } | ||
| { ?s dcat:accessURL ?url . | ||
| FILTER CONTAINS(STR(?url), "download") | ||
| } |
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