/*
* Copyright 2010 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.workbench.models.guided.dtable.backend;
import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.DomDriver;
import org.drools.workbench.models.guided.dtable.backend.util.GuidedDecisionTableUpgradeHelper1;
import org.drools.workbench.models.guided.dtable.backend.util.GuidedDecisionTableUpgradeHelper2;
import org.drools.workbench.models.guided.dtable.backend.util.GuidedDecisionTableUpgradeHelper3;
import org.drools.workbench.models.guided.dtable.shared.model.ActionInsertFactCol52;
import org.drools.workbench.models.guided.dtable.shared.model.ActionRetractFactCol52;
import org.drools.workbench.models.guided.dtable.shared.model.ActionSetFieldCol52;
import org.drools.workbench.models.guided.dtable.shared.model.AttributeCol52;
import org.drools.workbench.models.guided.dtable.shared.model.ConditionCol52;
import org.drools.workbench.models.guided.dtable.shared.model.DTCellValue52;
import org.drools.workbench.models.guided.dtable.shared.model.GuidedDecisionTable52;
import org.drools.workbench.models.guided.dtable.shared.model.MetadataCol52;
import org.drools.workbench.models.guided.dtable.shared.model.Pattern52;
import org.drools.workbench.models.guided.dtable.shared.model.legacy.ActionInsertFactCol;
import org.drools.workbench.models.guided.dtable.shared.model.legacy.ActionRetractFactCol;
import org.drools.workbench.models.guided.dtable.shared.model.legacy.ActionSetFieldCol;
import org.drools.workbench.models.guided.dtable.shared.model.legacy.AttributeCol;
import org.drools.workbench.models.guided.dtable.shared.model.legacy.ConditionCol;
import org.drools.workbench.models.guided.dtable.shared.model.legacy.GuidedDecisionTable;
import org.drools.workbench.models.guided.dtable.shared.model.legacy.MetadataCol;
import java.math.BigDecimal;
@SuppressWarnings("deprecation")
public class GuidedDTXMLPersistence {
private XStream xt;
private static final GuidedDecisionTableUpgradeHelper1 upgrader1 = new GuidedDecisionTableUpgradeHelper1();
private static final GuidedDecisionTableUpgradeHelper2 upgrader2 = new GuidedDecisionTableUpgradeHelper2();
private static final GuidedDecisionTableUpgradeHelper3 upgrader3 = new GuidedDecisionTableUpgradeHelper3();
private static final GuidedDTXMLPersistence INSTANCE = new GuidedDTXMLPersistence();
private GuidedDTXMLPersistence() {
xt = new XStream( new DomDriver() );
//Legacy model
xt.alias( "decision-table",
GuidedDecisionTable.class );
xt.alias( "metadata-column",
MetadataCol.class );
xt.alias( "attribute-column",
AttributeCol.class );
xt.alias( "condition-column",
ConditionCol.class );
xt.alias( "set-field-col",
ActionSetFieldCol.class );
xt.alias( "retract-fact-column",
ActionRetractFactCol.class );
xt.alias( "insert-fact-column",
ActionInsertFactCol.class );
//Post 5.2 model
xt.alias( "decision-table52",
GuidedDecisionTable52.class );
xt.alias( "metadata-column52",
MetadataCol52.class );
xt.alias( "attribute-column52",
AttributeCol52.class );
xt.alias( "condition-column52",
ConditionCol52.class );
xt.alias( "set-field-col52",
ActionSetFieldCol52.class );
xt.alias( "retract-fact-column52",
ActionRetractFactCol52.class );
xt.alias( "insert-fact-column52",
ActionInsertFactCol52.class );
xt.alias( "value",
DTCellValue52.class );
xt.alias( "Pattern52",
Pattern52.class );
//See https://issues.jboss.org/browse/GUVNOR-1115
xt.aliasPackage( "org.drools.guvnor.client",
"org.drools.ide.common.client");
//this is for migrating org.drools.ide.common.client.modeldriven.auditlog.AuditLog to org.drools.workbench.models.datamodel.auditlog.AuditLog
xt.aliasPackage("org.drools.guvnor.client.modeldriven.dt52.auditlog",
"org.drools.workbench.models.guided.dtable.shared.auditlog");
//this is for migrating org.drools.ide.common.client.modeldriven.dt52.auditlog.DecisionTableAuditLogFilter
//to org.drools.workbench.models.guided.dtable.shared.auditlog.DecisionTableAuditLogFilter
xt.aliasPackage("org.drools.guvnor.client.modeldriven.dt52",
" org.drools.workbench.models.guided.dtable.shared.model");
//All numerical values are historically BigDecimal
xt.alias( "valueNumeric",
Number.class,
BigDecimal.class );
// this is needed for OSGi as XStream needs to be able to load classes from the guided-dtable module
// and the default classloader for XStream bundle in OSGi does not have access to those classes
xt.setClassLoader( getClass().getClassLoader() );
}
public static GuidedDTXMLPersistence getInstance() {
return INSTANCE;
}
public String marshal( GuidedDecisionTable52 dt ) {
return xt.toXML( dt );
}
public GuidedDecisionTable52 unmarshal( String xml ) {
if ( xml == null || xml.trim().equals( "" ) ) {
return new GuidedDecisionTable52();
}
//Upgrade DTModel to new class
Object model = xt.fromXML( xml );
GuidedDecisionTable52 newDTModel;
if ( model instanceof GuidedDecisionTable ) {
GuidedDecisionTable legacyDTModel = (GuidedDecisionTable) model;
newDTModel = upgrader1.upgrade( legacyDTModel );
} else {
newDTModel = (GuidedDecisionTable52) model;
}
//Upgrade RowNumber, Salience and Duration data-types are correct
newDTModel = upgrader2.upgrade( newDTModel );
//Upgrade Default Values to typed equivalents
newDTModel = upgrader3.upgrade( newDTModel );
return newDTModel;
}
}