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svn-gvsig-desktop / trunk / libraries / libFMap / src / com / iver / cit / gvsig / fmap / layers / FLyrVectLinkProperties.java @ 20701

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package com.iver.cit.gvsig.fmap.layers;
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import java.awt.geom.Point2D;
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import java.io.File;
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import java.net.URI;
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import java.net.URISyntaxException;
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import java.util.BitSet;
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import com.hardcode.gdbms.driver.exceptions.ReadDriverException;
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import com.hardcode.gdbms.engine.data.DataSource;
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import com.iver.cit.gvsig.exceptions.visitors.VisitorException;
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import com.iver.cit.gvsig.fmap.layers.layerOperations.AlphanumericData;
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/**
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 * This class extends AbstractLinkProperties and implements the method to get an array of URI
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 * using a point2D and a tolerance. This class extends AstractLinkProperties to add HyperLink
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 * to Vectorial Layer(FLyrVect) 
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 */
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public class FLyrVectLinkProperties extends AbstractLinkProperties{
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    /**
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     * Default Constructor. Costructs a LinkProperties with the necessary information
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     *
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     */
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    public FLyrVectLinkProperties(){
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        setType(0);
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        setField(null);
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        setExt(null);
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    }
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    /**
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     * Constructor. Constructs a LinkProperties with the information that receives 
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     * @param tipo
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     * @param fieldName
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     * @param extension
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     */
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    public FLyrVectLinkProperties(int tipo, String fieldName, String extension){
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        setType(tipo);
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        setField(fieldName);
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        setExt(extension);
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    }
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    /**
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     * Creates an array of URI. With the point and the tolerance makes a query to the layer
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     * and gets the geometries that contains the point with a certain error (tolerance).
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     * For each one of this geometries creates one URI and adds it to the array
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     * @param layer 
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     * @param point
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     * @param tolerance
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     * @return Array of URI 
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     */
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    public URI[] getLink(FLayer layer, Point2D point, double tolerance)  {
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        //Sacado de la clase LinkListener
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        FLyrVect lyrVect = (FLyrVect) layer;
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        FBitSet newBitSet;
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        BitSet bitset;
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        URI uri[]=null;
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        //Construimos el BitSet (V?ctor con componentes BOOLEAN) con la consulta que
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        //hacemos a la capa.
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        try {
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            newBitSet = lyrVect.queryByPoint(point, tolerance);
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            bitset = newBitSet;
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        } catch (ReadDriverException e) {
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            return null;
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        } catch (VisitorException e) {
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            return null;
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        }
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        //Si el bitset creado no est? vac?o creamos el vector de URLS correspondientes
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        //a la consulta que hemos hecho.
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        if (bitset!=null){
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            try {
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                if (layer instanceof AlphanumericData) {
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                    DataSource ds = ((AlphanumericData) layer).getRecordset();
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                    ds.start();
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                    //boolean exist=false;
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                    int idField;
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                    //Creo el vector de URL?s con la misma longitud que el bitset
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                    uri = new URI[bitset.length()];
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                    //Consigo el identificador del campo pasandole como par?metro el
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                    //nombre del campo del ?nlace
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                    idField = ds.getFieldIndexByName(this.getField());
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                    if (idField != -1){
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                        //Recorremos el BitSet siguiendo el ejmplo de la clase que se
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                        //proporciona en la API
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                        for (int j = bitset.nextSetBit(0); j >= 0;
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                            j = bitset.nextSetBit(j + 1)){
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                            //TODO
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                            //Sacado de la clase LinkPanel, decidir como pintar la URL le
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                            //corresponde a LinkPanel, aqu? solo creamos el vector de URL?s
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                            String auxext="";
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                            if (!super.getExt().equals("")){
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                                auxext="."+this.getExt();
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                            }
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//                                                ds.start();
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                            //Creamos el fichero con el nombre del campo y la extensi?n.
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                            String auxField=ds.getFieldValue(j, idField).toString();
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                            if(auxField.startsWith("http:/")){
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                                    try {
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                                                                        uri[j]=new URI(auxField);
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                                                                } catch (URISyntaxException e) {
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                                                                        // TODO Auto-generated catch block
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                                                                        e.printStackTrace();
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                                                                }
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                            }
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                            else{
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                                    File file =new File(ds.getFieldValue(j, idField).toString()+auxext);
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                                    uri[j]= file.toURI();
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                            }
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                            System.out.println(uri[j].toString());
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                            //System.out.println(uri[j]);
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                        }
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                        return uri;
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                    }
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                    ds.stop();
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                }else {
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                    //Posible error
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                    System.out.println("Error");
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                }
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            } catch (ReadDriverException e) {
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                //Posible error
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                System.out.println("Error");
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            }
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            }
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            return null;
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     }
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        public String getClassName() {
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                // TODO Auto-generated method stub
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                return null;
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        }
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}