Application: gvSIG desktop

package org.gvsig.expressionevaluator.impl.function.foldersmanager;

import java.io.File;

import org.apache.commons.lang3.Range;

import org.gvsig.expressionevaluator.Interpreter;

import org.gvsig.expressionevaluator.spi.AbstractFunction;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.folders.FoldersManager;

public class GetFolderFunction extends AbstractFunction {

    public static final String NAME = "GETFOLDER";

    public GetFolderFunction() {

        super(

            "Folders", 

            NAME, 

            Range.between(1,2),

            "Get a folder by id", 

            NAME+"({{folderid}}, defaultValue)", 

            new String[] {

                "folderid - Identifier of the folder to retrieve",

                "defaultValue - Optional. value to get if the folder with id 'folderid' is not defined."

            }, 

            "File", 

            false

        );

    }

    @Override

    public boolean allowConstantFolding() {

        return false;

    }

    @Override

    public Object call(Interpreter interpreter, Object[] args) {

        FoldersManager folderManager = ToolsLocator.getFoldersManager();

        String id = getStr(args, 0);

        File defaultValue = null;

        if( args.length==2 ) {

            defaultValue = getFile(args,1);

        }

        File f = folderManager.get(id, defaultValue);

        return f;

    }

}