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/* InvariantValuesLoader.java
* =========================================================================
* This file is part of the GrInvIn project - http://www.grinvin.org
*
* Copyright (C) 2005-2008 Universiteit Gent
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* A copy of the GNU General Public License can be found in the file
* LICENSE.txt provided with the source distribution of this program (see
* the META-INF directory in the source jar). This license can also be
* found on the GNU website at http://www.gnu.org/licenses/gpl.html.
*
* If you did not receive a copy of the GNU General Public License along
* with this program, contact the lead developer, or write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
package org.grinvin.io;
import java.io.InputStream;
import org.grinvin.graphs.GraphBundle;
import org.grinvin.invariants.values.AbstractInvariantValueDelegate;
import org.grinvin.invariants.InvariantValue;
import org.grinvin.invariants.UnknownInvariantException;
import org.grinvin.invariants.UnknownInvariantTypeException;
import org.jdom.Document;
import org.jdom.Element;
/**
* Loader for the computed values of a saved GraphBundle
*/
public class InvariantValuesLoader {
//
private static final String PUBLIC_ID = "-//GrInvIn IO//Invariant Values 1.1//EN";
//
private InvariantValuesLoader() { }
//TODO: check exceptions
/**
* Load the values of the invariants to the given graphbundle
* @param element The Element containing the invariant values
*/
private static void toInvariantValues(GraphBundle bundle, Element element) throws IOFormatException {
for (Object obj : element.getChildren ("invariantvalue")) {
try {
InvariantValue value = AbstractInvariantValueDelegate.fromElement((Element)obj);
if (value != null)
bundle.addInvariantValue(value);
//TODO: log this
} catch (UnknownInvariantException e) {
// ignore
// TODO: please log this
} catch (UnknownInvariantTypeException e) {
// ignore
// TODO: please log this
}
}
}
private static void toInvariantValues_1_0(GraphBundle bundle, Element element) throws IOFormatException {
for (Object obj : element.getChildren ("invariantvalue")) {
try {
InvariantValue value = AbstractInvariantValueDelegate.fromElement_1_0((Element)obj);
if (value != null)
bundle.addInvariantValue(value);
//TODO: log this
} catch (UnknownInvariantException e) {
// ignore
// TODO: please log this
} catch (UnknownInvariantTypeException e) {
// ignore
// TODO: please log this
}
}
}
/**
* Load the invariant values from the given InputStream
* @param input the InputStream
*/
public static void load(GraphBundle bundle, InputStream input) throws IOFormatException {
try {
Document document = LoaderSaverHelper.loadDocument(input);
if (!PUBLIC_ID.equals(document.getDocType().getPublicID()))
throw new IOFormatException("Unkown document type: " + document.getDocType().getPublicID() + " expects " + PUBLIC_ID);
toInvariantValues(bundle, document.getRootElement());
} catch (Exception ex) {
//TODO: check this
throw new IOFormatException("Missing invariant", ex);
}
}
public static void load_1_0(GraphBundle bundle, InputStream input) throws IOFormatException {
try {
toInvariantValues_1_0(bundle, LoaderSaverHelper.loadElementNonValidating(input, "invariantvalues"));
} catch (Exception ex) {
//TODO: check this
throw new IOFormatException("Missing invariant", ex);
}
}
}
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