Package org.locationtech.udig.catalog.jgrass.core

Source Code of org.locationtech.udig.catalog.jgrass.core.JGrassConnectionFactory

/*
* uDig - User Friendly Desktop Internet GIS client
* (C) HydroloGIS - www.hydrologis.com
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* (http://www.eclipse.org/legal/epl-v10.html), and the HydroloGIS BSD
* License v1.0 (http://udig.refractions.net/files/hsd3-v10.html).
*/
package org.locationtech.udig.catalog.jgrass.core;

import java.io.File;
import java.io.IOException;
import java.io.Serializable;
import java.net.URL;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

import org.locationtech.udig.catalog.IResolve;
import org.locationtech.udig.catalog.ui.UDIGConnectionFactory;

/**
* TODO Purpose of
* <p>
* connection factory to the JGrass database service
* </p>
* <p>
* <i>Note: based on the WMS plugin</i>
* </p>
*
* @author Andrea Antonello - www.hydrologis.com
* @since 1.1.0
*/
public class JGrassConnectionFactory extends UDIGConnectionFactory {

    public boolean canProcess(Object context) {
        if (context instanceof IResolve) {
            IResolve resolve = (IResolve) context;
            try {
                // what enters should be a JGrassService, which resolves to a
                // folder
                return (resolve.canResolve(File.class) && resolve.resolve(
                        File.class, null).isDirectory());
            } catch (IOException e) {
                throw (RuntimeException) new RuntimeException().initCause(e);
            }
        }
        return false;
    }

    @SuppressWarnings("unchecked")
    public Map<String, Serializable> createConnectionParameters(Object context) {
        if (context instanceof IResolve) {
            Map<String, Serializable> params = createParams((IResolve) context);
            if (!params.isEmpty())
                return params;
        }
        return Collections.EMPTY_MAP;
    }

    @SuppressWarnings("unchecked")
    static public Map<String, Serializable> createParams(IResolve handle) {
        if (handle instanceof JGrassService) {
            // got a hit!
            JGrassService jgrassService = (JGrassService) handle;
            return jgrassService.getConnectionParams();
        }
        return Collections.EMPTY_MAP;
    }

    /** 'Create' params given the provided url, no magic occurs */
    static public Map<String, Serializable> createParams(URL url) {
        JGrassServiceExtension factory = new JGrassServiceExtension();
        Map<String, Serializable> params = factory.createParams(url);
        if (params != null)
            return params;

        Map<String, Serializable> params2 = new HashMap<String, Serializable>();
        params2.put(JGrassServiceExtension.KEY, url);
        return params2;
    }

    public URL createConnectionURL(Object context) {
        return null;
    }

}
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