Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/artifacts/states/DGMSelect.java @ 7471:fff862f4ef76
Experimental caching of datacage recommendations. The respective hook is called a lot and running the datacage over and over again when loading data can be expensive. So the generated recommendations are cached for some time.
Hopefully this improves the overall speed of loading data from the datacage.
author | Sascha L. Teichmann <teichmann@intevation.de> |
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date | Wed, 30 Oct 2013 15:26:21 +0100 |
parents | af13ceeba52a |
children | e4606eae8ea5 |
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/* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde * Software engineering by Intevation GmbH * * This file is Free Software under the GNU AGPL (>=v3) * and comes with ABSOLUTELY NO WARRANTY! Check out the * documentation coming with Dive4Elements River for details. */ package org.dive4elements.river.artifacts.states; import java.io.File; import org.w3c.dom.Element; import org.apache.log4j.Logger; import org.dive4elements.artifacts.Artifact; import org.dive4elements.artifacts.CallContext; import org.dive4elements.artifacts.common.utils.XMLUtils.ElementCreator; import org.dive4elements.river.model.DGM; import org.dive4elements.river.model.River; import org.dive4elements.river.artifacts.D4EArtifact; import org.dive4elements.river.utils.RiverUtils; /** * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> */ public class DGMSelect extends DefaultState { private static final Logger logger = Logger.getLogger(DGMSelect.class); public static final String ERR_EMPTY = "error_no_dgm_selected"; public static final String ERR_INVALID_DGM = "error_invalid_dgm_selected"; public static final String ERR_BAD_DGM_RANGE = "error_bad_dgm_range"; public static final String ERR_BAD_DGM_RIVER = "error_bad_dgm_river"; @Override protected String getUIProvider() { return "dgm_datacage_panel"; } @Override protected Element createStaticData( D4EArtifact flys, ElementCreator creator, CallContext cc, String name, String value, String type ) { Element dataElement = creator.create("data"); creator.addAttr(dataElement, "name", name, true); creator.addAttr(dataElement, "type", type, true); Element itemElement = creator.create("item"); creator.addAttr(itemElement, "value", value, true); creator.addAttr(itemElement, "label", getLabel(cc, value), true); dataElement.appendChild(itemElement); return dataElement; } public static String getLabel(CallContext cc, String value) { logger.debug("Create label for value: " + value); try { DGM dgm = DGM.getDGM(Integer.parseInt(value)); File file = new File(dgm.getPath()); return file.getName(); } catch (NumberFormatException nfe) { logger.warn("Cannot parse int value: '" + value + "'"); } return ""; } @Override public boolean validate(Artifact artifact) throws IllegalArgumentException { D4EArtifact flys = (D4EArtifact) artifact; DGM dgm = getDGM(flys); if (dgm == null) { throw new IllegalArgumentException(ERR_INVALID_DGM); } double l = dgm.getRange().getA().doubleValue(); double u = dgm.getRange().getB().doubleValue(); double[] range = RiverUtils.getKmFromTo(flys); if (range[0] < l || range[0] > u || range[1] < l || range[1] > u) { throw new IllegalArgumentException(ERR_BAD_DGM_RANGE); } River selectedRiver = RiverUtils.getRiver(flys); River dgmRiver = dgm.getRiver(); if (selectedRiver != dgmRiver) { throw new IllegalArgumentException(ERR_BAD_DGM_RIVER); } return true; } /** * Returns the DGM specified in the parameters of <i>flys</i>. * * @param flys The D4EArtifact that knows the ID of a DGM. * * @throws IllegalArgumentException If the D4EArtifact doesn't know the ID * of a DGM. * * @return the DGM specified by D4EArtifact's parameters. */ public static DGM getDGM(D4EArtifact flys) throws IllegalArgumentException { try { Integer dgmId = flys.getDataAsInteger("dgm"); if (dgmId == null) { throw new IllegalArgumentException(ERR_EMPTY); } logger.debug("Found selected dgm: '" + dgmId + "'"); return DGM.getDGM(dgmId); } catch (NumberFormatException nfe) { throw new IllegalArgumentException(ERR_INVALID_DGM); } } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :