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/* |
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$Id$ |
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3 |
|
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Copyright (C) 2005 Nicklas Nordborg |
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Copyright (C) 2006 Jari Häkkinen, Nicklas Nordborg |
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Copyright (C) 2007 Nicklas Nordborg |
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|
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This file is part of BASE - BioArray Software Environment. |
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Available at http://base.thep.lu.se/ |
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|
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BASE is free software; you can redistribute it and/or |
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modify it under the terms of the GNU General Public License |
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as published by the Free Software Foundation; either version 3 |
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of the License, or (at your option) any later version. |
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|
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BASE is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with BASE. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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package net.sf.basedb.util; |
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|
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import net.sf.basedb.core.SessionControl; |
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import net.sf.basedb.core.DbControl; |
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import net.sf.basedb.core.BaseException; |
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import net.sf.basedb.core.InvalidDataException; |
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import net.sf.basedb.core.InvalidUseOfNullException; |
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import net.sf.basedb.core.File; |
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import net.sf.basedb.core.Include; |
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import net.sf.basedb.core.Location; |
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import net.sf.basedb.core.ItemQuery; |
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import net.sf.basedb.core.PluginConfiguration; |
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import net.sf.basedb.core.PluginDefinition; |
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import net.sf.basedb.core.query.Expressions; |
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import net.sf.basedb.core.query.Orders; |
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import net.sf.basedb.core.query.Hql; |
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import net.sf.basedb.core.query.Restrictions; |
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import net.sf.basedb.core.plugin.AutoDetectingImporter; |
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import net.sf.basedb.core.plugin.GuiContext; |
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import net.sf.basedb.core.plugin.InteractivePlugin; |
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import net.sf.basedb.util.ContextUtil.ContextResult; |
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import net.sf.basedb.util.filter.Filter; |
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|
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import java.util.List; |
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import java.util.LinkedList; |
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import java.util.Map; |
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import java.util.LinkedHashMap; |
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import java.util.Collections; |
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import java.io.InputStream; |
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|
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/** |
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This class has methods for autodetecting file formats. |
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|
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@author Nicklas |
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@version 2.0 |
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@base.modified $Date$ |
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*/ |
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public class AutoDetectFileFormat |
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{ |
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|
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/** |
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Find all plugins with configurations which can import the specified file. |
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This method will check all plugins implementing the {@link |
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AutoDetectingImporter} interface if they can import the specified file. |
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|
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@param dc The <code>DbControl</code> object to use for database access |
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@param context A required context for the plugins (ie. what items to import) |
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@param file The file to import |
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@param charset If given, overrides the character set specified by the file |
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{@link File#getCharacterSet()} |
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@param pluginDef Check only the configurations of this plugin definition, or |
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null if all plugin definitions should be checked |
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@return A map which for each plugin definition contains a list |
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of mathching configurations |
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@throws InvalidDataException If the file parameter is null or if |
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the file isn't located in {@link Location#PRIMARY} storage |
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@throws BaseException If there is another error |
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@since 2.9 |
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*/ |
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public static Map<PluginDefinition, List<PluginConfiguration>> findPlugins(DbControl dc, |
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GuiContext context, File file, String charset, PluginDefinition pluginDef) |
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throws InvalidDataException, BaseException |
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{ |
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if (file == null) throw new InvalidUseOfNullException("file"); |
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if (!file.getLocation().isDownloadable()) |
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{ |
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throw new InvalidDataException("Can't download file data for file '" + |
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file.getName() + "'; location=" + file.getLocation()); |
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} |
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SessionControl sc = dc.getSessionControl(); |
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Object currentItem = null; |
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if (context.getType() == GuiContext.Type.ITEM) |
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{ |
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currentItem = context.getItem().getById(dc, sc.getCurrentContext(context.getItem()).getId()); |
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} |
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|
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Map<PluginDefinition, List<PluginConfiguration>> plugins = |
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new LinkedHashMap<PluginDefinition, List<PluginConfiguration>>(); |
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|
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List<PluginDefinition> pluginDefs = null; |
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if (pluginDef == null) |
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{ |
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ItemQuery<PluginDefinition> pluginQuery = |
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PluginDefinition.getQuery(context, AutoDetectingImporter.class.getName()); |
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pluginQuery.order(Orders.asc(Hql.property("name"))); |
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pluginQuery.restrict(Restrictions.eq(Hql.property("disabled"), Expressions.parameter("isDisabled", false))); |
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pluginQuery.include(Include.MINE, Include.SHARED, Include.IN_PROJECT, Include.OTHERS); |
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pluginDefs = pluginQuery.list(dc); |
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} |
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else |
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{ |
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pluginDefs = Collections.singletonList(pluginDef); |
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} |
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|
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for (PluginDefinition plugin : pluginDefs) |
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{ |
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List<PluginConfiguration> configs = new LinkedList<PluginConfiguration>(); |
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if (!plugin.requiresConfiguration()) |
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{ |
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if (checkImportable(sc, plugin, null, file, charset, context, currentItem)) |
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{ |
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configs.add(null); |
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} |
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} |
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if (plugin.supportsConfigurations()) |
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{ |
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ItemQuery<PluginConfiguration> configQuery = plugin.getPluginConfigurations(); |
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configQuery.restrict(Restrictions.gt(Hql.property("parameterVersion"), Expressions.integer(0))); |
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configQuery.restrict(Restrictions.eq(Hql.property("disabled"), Expressions.parameter("isDisabled", false))); |
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configQuery.order(Orders.asc(Hql.property("name"))); |
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configQuery.include(Include.MINE, Include.SHARED, Include.IN_PROJECT, Include.OTHERS); |
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for (PluginConfiguration config : configQuery.list(dc)) |
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{ |
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if (checkImportable(sc, plugin, config, file, charset, context, currentItem)) |
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{ |
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configs.add(config); |
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} |
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} |
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} |
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if (configs.size() > 0) plugins.put(plugin, configs); |
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} |
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return plugins; |
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} |
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|
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private static boolean checkImportable(SessionControl sc, PluginDefinition plugin, |
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PluginConfiguration config, File file, String charset, GuiContext context, Object currentItem) |
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{ |
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AutoDetectingImporter importer = null; |
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boolean canBeUsed = false; |
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try |
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{ |
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importer = plugin.newInstance(AutoDetectingImporter.class, sc, config, null); |
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boolean isInContext = true; |
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if (plugin.isInteractive() && context != null) |
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{ |
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try |
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{ |
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InteractivePlugin ip = (InteractivePlugin)importer; |
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isInContext = ip.isInContext(context, currentItem) == null; |
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} |
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catch (Throwable t) |
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{ |
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isInContext = false; |
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} |
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} |
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if (isInContext) |
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{ |
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InputStream in = new FileImportInputStream(file, 0, charset); |
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try |
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{ |
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canBeUsed = importer.isImportable(in); |
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} |
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catch (Throwable t) |
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{ |
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canBeUsed = false; |
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} |
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finally |
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{ |
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try |
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{ |
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in.close(); |
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} |
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catch (Throwable t) |
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{} |
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} |
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} |
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} |
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finally |
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{ |
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if (importer != null) importer.done(); |
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} |
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return canBeUsed; |
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} |
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|
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/** |
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Filter implementation that filters a collection of |
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{@link ContextResult}:s by checking each plug-ins ability to |
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21 Oct 08 |
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import a given file. Eg. the ContextResult is accepted if the |
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{@link AutoDetectingImporter#isImportable(InputStream)} returns |
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true. It is assumed that the collection of ContextResult:s only |
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contains import plug-ins that implements the AutoDetectingImporter |
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interface. |
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|
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@author Nicklas |
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@version 2.9 |
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@base.modified $Date$ |
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*/ |
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public static class IsImportableFilter |
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implements Filter<ContextResult> |
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{ |
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private File file; |
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private Filter<? super ContextResult> parent; |
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|
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public IsImportableFilter(File file, Filter<? super ContextResult> parent) |
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{ |
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this.file = file; |
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this.parent = parent; |
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} |
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|
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@Override |
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public boolean evaluate(ContextResult result) |
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225 |
{ |
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if (result == null) return false; |
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227 |
if (parent != null && !parent.evaluate(result)) return false; |
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if (!result.isInContext()) return false; |
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21 Oct 08 |
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229 |
return checkImportable(file.getSessionControl(), |
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21 Oct 08 |
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230 |
result.getPluginDefinition(), result.getPluginConfiguration(), file, |
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21 Oct 08 |
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null, null, null); |
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232 |
} |
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233 |
} |
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|
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} |