ingo@2190: package de.intevation.flys.artifacts.states;
ingo@2190: 
ingo@2190: import org.w3c.dom.Element;
ingo@2190: 
ingo@2202: import org.apache.log4j.Logger;
ingo@2202: 
ingo@2190: import de.intevation.artifacts.Artifact;
ingo@2190: import de.intevation.artifacts.CallContext;
ingo@2190: 
ingo@2190: import de.intevation.artifacts.common.ArtifactNamespaceContext;
ingo@2190: import de.intevation.artifacts.common.utils.XMLUtils.ElementCreator;
ingo@2190: 
ingo@2190: import de.intevation.artifactdatabase.ProtocolUtils;
ingo@2190: 
ingo@2190: import de.intevation.flys.artifacts.FLYSArtifact;
ingo@2190: 
ingo@2190: 
ingo@2190: /**
ingo@2190:  * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
ingo@2190:  */
ingo@2190: public abstract class MinMaxState extends DefaultState {
ingo@2190: 
ingo@2202:     private static final Logger logger = Logger.getLogger(MinMaxState.class);
ingo@2202: 
ingo@2190:     @Override
ingo@2190:     protected void appendItems(
ingo@2190:         Artifact       artifact,
ingo@2190:         ElementCreator creator,
ingo@2190:         String         name,
ingo@2190:         CallContext    context,
ingo@2190:         Element        select
ingo@2190:     ) {
ingo@2190:         FLYSArtifact flys = (FLYSArtifact) artifact;
ingo@2190: 
ingo@2190:         select.setAttributeNS(
ingo@2190:             ArtifactNamespaceContext.NAMESPACE_URI,
ingo@2190:             "art:type",
ingo@2190:             getType());
ingo@2190: 
ingo@2202:         String[] defMinMax = getDefaults(artifact, name);
ingo@2202: 
ingo@2190:         Element min = ProtocolUtils.createArtNode(
ingo@2190:             creator,
ingo@2190:             "min",
ingo@2202:             new String[] { "value", "default" },
ingo@2202:             new String[] { String.valueOf(getLower(flys)), defMinMax[0] });
ingo@2190: 
ingo@2190:         Element max = ProtocolUtils.createArtNode(
ingo@2190:             creator,
ingo@2190:             "max",
ingo@2202:             new String[] { "value", "default" },
ingo@2202:             new String[] { String.valueOf(getUpper(flys)), defMinMax[1] });
ingo@2190: 
ingo@2190:         select.appendChild(min);
ingo@2190:         select.appendChild(max);
ingo@2190:     }
ingo@2190: 
ingo@2190: 
ingo@2202:     /**
ingo@2202:      * This method returns the default values for min and max. If the static
ingo@2202:      * field DefaultState.USE_DEFAULTS is set, the minimum and maximum inserted
ingo@2202:      * by the user is returned as string. Otherwise, the absolute minimum and
ingo@2202:      * maximum are returned.
ingo@2202:      *
ingo@2202:      * @param artifact The FLYSArtifact.
ingo@2202:      * @param name The name of the parameter.
ingo@2202:      *
ingo@2202:      * @return a string array [min,max] that contains the minimum and maximum
ingo@2202:      * values for the parameter <i>name</i>.
ingo@2202:      */
ingo@2202:     protected String[] getDefaults(Artifact artifact, String name) {
ingo@2202:         if (DefaultState.USE_DEFAULTS) {
ingo@2202:             String[] tmp = getMinMaxByParameter(artifact, name);
ingo@2202: 
ingo@2202:             return tmp != null ? tmp : getMinMaxDefaults(artifact, name);
ingo@2202:         }
ingo@2202:         else {
ingo@2202:             return getMinMaxDefaults(artifact, name);
ingo@2202:         }
ingo@2202:     }
ingo@2202: 
ingo@2202: 
ingo@2202:     /**
ingo@2202:      * Returns a string array with minimum and maximum inserted by the user as
ingo@2202:      * [min,max].
ingo@2202:      *
ingo@2202:      * @param artifact The FLYSArtifact that stores the parameter.
ingo@2202:      * @param name The name of the parameter for raw min/max value string.
ingo@2202:      *
ingo@2202:      * @return a string array [min,max].
ingo@2202:      */
ingo@2202:     protected String[] getMinMaxByParameter(Artifact artifact, String name) {
ingo@2202:         FLYSArtifact flys     = (FLYSArtifact) artifact;
ingo@2202:         String       rawValue = flys.getDataAsString(name);
ingo@2202: 
ingo@2202:         if (rawValue == null) {
ingo@2202:             logger.debug("No value for '" + rawValue + "' existing.");
ingo@2202:             return null;
ingo@2202:         }
ingo@2202: 
ingo@2202:         logger.debug("Raw value for '" + name + "' = " + rawValue);
ingo@2202: 
ingo@2202:         return rawValue.split(";");
ingo@2202:     }
ingo@2202: 
ingo@2202: 
ingo@2202:     /**
ingo@2202:      * Returns a string array with absolute minimum and maximum as [min,max].
ingo@2202:      *
ingo@2202:      * @param artifact The FLYSArtifact (not used in this implementation).
ingo@2202:      * @param name The parameter name (not used in this implementation).
ingo@2202:      *
ingo@2202:      * @return a string array [min,max].
ingo@2202:      */
ingo@2202:     protected String[] getMinMaxDefaults(Artifact artifact, String name) {
ingo@2202:         FLYSArtifact flys = (FLYSArtifact) artifact;
ingo@2202: 
ingo@2202:         Object lower = getLower(flys);
ingo@2202:         Object upper = getUpper(flys);
ingo@2202: 
ingo@2202:         return new String[] { String.valueOf(lower), String.valueOf(upper) };
ingo@2202:     }
ingo@2202: 
ingo@2202: 
ingo@2190:     protected abstract Object getLower(FLYSArtifact flys);
ingo@2190: 
ingo@2190:     protected abstract Object getUpper(FLYSArtifact flys);
ingo@2190: 
ingo@2190:     protected abstract String getType();
ingo@2190: }
ingo@2190: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :