Mercurial > dive4elements > river
view flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/FixingsOverviewService.java @ 2566:8bacd0ce3704
Partial fix flys/issue637 (wording).
flys-artifacts/trunk@4092 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Mon, 27 Feb 2012 09:09:54 +0000 |
parents | 3f038d54bc87 |
children | 938e2f6c0c9a |
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package de.intevation.flys.artifacts.services; import de.intevation.artifacts.CallMeta; import de.intevation.artifacts.GlobalContext; import de.intevation.artifacts.common.utils.XMLUtils; import de.intevation.flys.artifacts.model.FixingsOverview.Fixing.Filter; import de.intevation.flys.artifacts.model.FixingsOverview.AndFilter; import de.intevation.flys.artifacts.model.FixingsOverview.DateFilter; import de.intevation.flys.artifacts.model.FixingsOverview.DateRangeFilter; import de.intevation.flys.artifacts.model.FixingsOverview.IdFilter; import de.intevation.flys.artifacts.model.FixingsOverview.NotFilter; import de.intevation.flys.artifacts.model.FixingsOverview.OrFilter; import de.intevation.flys.artifacts.model.FixingsOverview.Range; import de.intevation.flys.artifacts.model.FixingsOverview.SectorRangeFilter; import de.intevation.flys.artifacts.model.FixingsOverview; import de.intevation.flys.artifacts.model.FixingsOverviewFactory; import java.text.ParsePosition; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.List; import org.apache.log4j.Logger; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.Node; import org.w3c.dom.NodeList; public class FixingsOverviewService extends FLYSService { private static Logger log = Logger.getLogger(FixingsOverviewService.class); public FixingsOverviewService() { } @Override public Document doProcess( Document data, GlobalContext globalContext, CallMeta callMeta ) { log.debug("FixingsOverviewService.doProcess"); Document document = XMLUtils.newDocument(); NodeList nodes = data.getElementsByTagName("river"); String river = nodes.getLength() > 0 ? ((Element)nodes.item(0)).getAttribute("name") : ""; FixingsOverview overview = FixingsOverviewFactory.getOverview(river); if (overview != null) { Range range = getRange(data); Filter filter = getFilter(data); overview.generateOverview(document, range, filter); } else { log.warn("No overview for river '" + river + "' available."); } return document; } public static Range getRange(Document data) { NodeList ranges = data.getElementsByTagName("range"); if (ranges.getLength() < 1) { return FixingsOverview.FULL_EXTENT; } Element range = (Element)ranges.item(0); String from = range.getAttribute("from").trim(); String to = range.getAttribute("to" ).trim(); double start = -Double.MAX_VALUE; double end = Double.MAX_VALUE; if (from.length() > 0) { try { start = Double.parseDouble(from); } catch (NumberFormatException nfe) { log.warn("Invalid from value: " + from); } } if (to.length() > 0) { try { end = Double.parseDouble(to); } catch (NumberFormatException nfe) { log.warn("Invalid to value: " + to); } } if (start > end) { double t = start; start = end; end = t; } return new Range(start, end); } public static Filter getFilter(Document data) { NodeList filters = data.getElementsByTagName("filter"); return filters.getLength() < 1 ? FixingsOverview.ACCEPT : buildFilter((Element)filters.item(0)); } public static Filter buildFilter(Element root) { List<Filter> filters = buildRecursiveFilter(root); switch (filters.size()) { case 0: return FixingsOverview.ACCEPT; case 1: return filters.get(0); default: return new AndFilter(filters); } } private static final Date parseDate(String text) { SimpleDateFormat format = new SimpleDateFormat(FixingsOverview.DATE_FORMAT); return format.parse(text, new ParsePosition(0)); } public static List<Filter> buildRecursiveFilter(Element root) { List<Filter> filters = new ArrayList<Filter>(); NodeList children = root.getChildNodes(); for (int i = 0, N = children.getLength(); i < N; ++i) { Node child = children.item(i); if (child.getNodeType() != Node.ELEMENT_NODE) { continue; } Element element = (Element)child; String name = element.getLocalName(); if ("and".equals(name)) { filters.add(new AndFilter(buildRecursiveFilter(element))); } else if ("or".equals(name)) { filters.add(new OrFilter(buildRecursiveFilter(element))); } else if ("not".equals(name)) { List<Filter> childrenFilters = buildRecursiveFilter(element); if (!childrenFilters.isEmpty()) { filters.add(new NotFilter(childrenFilters.get(0))); } } else if ("column".equals(name)) { String cid = element.getAttribute("cid").trim(); if (cid.length() > 0) { try { filters.add(new IdFilter(Integer.parseInt(cid))); } catch (NumberFormatException nfe) { } } } else if ("date".equals(name)) { String when = element.getAttribute("when").trim(); if (when.length() > 0) { Date date = parseDate(when); if (date != null) { filters.add(new DateFilter(date)); } } } else if ("date-range".equals(name)) { String from = element.getAttribute("from").trim(); String to = element.getAttribute("to" ).trim(); if (from.length() > 0 && to.length() > 0) { Date start = parseDate(from); Date end = parseDate(to); if (start != null && end != null) { filters.add(new DateRangeFilter(start, end)); } } } else if ("sector-range".equals(name)) { String from = element.getAttribute("from").trim(); String to = element.getAttribute("to" ).trim(); if (from.length() > 0 && to.length() > 0) { try { filters.add(new SectorRangeFilter( Integer.parseInt(from), Integer.parseInt(to))); } catch (NumberFormatException nfe) { } } } } return filters; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :