/*
* Copyright 2014 JBoss Inc
*
* 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.datamodel.rule.visitors;
import java.util.HashMap;
import java.util.Map;
import org.drools.workbench.models.datamodel.rule.ExpressionCollection;
import org.drools.workbench.models.datamodel.rule.ExpressionCollectionIndex;
import org.drools.workbench.models.datamodel.rule.ExpressionField;
import org.drools.workbench.models.datamodel.rule.ExpressionFormLine;
import org.drools.workbench.models.datamodel.rule.ExpressionGlobalVariable;
import org.drools.workbench.models.datamodel.rule.ExpressionMethod;
import org.drools.workbench.models.datamodel.rule.ExpressionMethodParameter;
import org.drools.workbench.models.datamodel.rule.ExpressionPart;
import org.drools.workbench.models.datamodel.rule.ExpressionText;
import org.drools.workbench.models.datamodel.rule.ExpressionUnboundFact;
import org.drools.workbench.models.datamodel.rule.ExpressionVariable;
import org.drools.workbench.models.datamodel.rule.ExpressionVisitor;
public class CopyExpressionVisitor implements ExpressionVisitor {
private ExpressionPart root;
private ExpressionPart curr;
public CopyExpressionVisitor() {
}
public ExpressionPart copy( ExpressionPart part ) {
root = null;
curr = null;
part.accept( this );
return root;
}
public void visit( ExpressionPart part ) {
throw new RuntimeException( "Can't copy an abstract class: " + ExpressionPart.class.getName() );
}
public void visit( ExpressionField part ) {
add( new ExpressionField( part.getName(),
part.getClassType(),
part.getGenericType(),
part.getParametricType() ) );
moveNext( part );
}
public void visit( ExpressionMethod part ) {
ExpressionMethod method = new ExpressionMethod( part.getName(),
part.getClassType(),
part.getGenericType(),
part.getParametricType() );
copyMethodParams( part,
method );
add( method );
moveNext( part );
}
public void visit( ExpressionVariable part ) {
add( new ExpressionVariable( part.getFact() ) );
moveNext( part );
}
public void visit( ExpressionUnboundFact part ) {
add( new ExpressionUnboundFact( part.getFact() ) );
moveNext( part );
}
public void visit( ExpressionCollection part ) {
add( new ExpressionCollection( part.getName(),
part.getClassType(),
part.getGenericType(),
part.getParametricType() ) );
moveNext( part );
}
public void visit( ExpressionCollectionIndex part ) {
ExpressionCollectionIndex method = new ExpressionCollectionIndex( part.getName(),
part.getClassType(),
part.getGenericType(),
part.getParametricType() );
copyMethodParams( part,
method );
add( method );
moveNext( part );
}
public void visit( ExpressionText part ) {
add( new ExpressionText( part.getName(),
part.getClassType(),
part.getGenericType() ) );
moveNext( part );
}
@Override
public void visit( ExpressionMethodParameter part ) {
add( new ExpressionMethodParameter( part.getName(),
part.getClassType(),
part.getGenericType() ) );
moveNext( part );
}
public void visit( ExpressionGlobalVariable part ) {
add( new ExpressionGlobalVariable( part.getName(),
part.getClassType(),
part.getGenericType(),
part.getParametricType() ) );
moveNext( part );
}
private void copyMethodParams( ExpressionMethod part,
ExpressionMethod method ) {
Map<String, ExpressionFormLine> params = new HashMap<String, ExpressionFormLine>();
for ( Map.Entry<String, ExpressionFormLine> entry : part.getParams().entrySet() ) {
params.put( entry.getKey(), new ExpressionFormLine( entry.getValue() ) );
}
method.setParams( params );
}
private void moveNext( ExpressionPart ep ) {
if ( ep.getNext() != null ) {
ep.getNext().accept( this );
}
}
private void add( ExpressionPart p ) {
if ( root == null ) {
root = p;
curr = p;
} else {
curr.setNext( p );
curr = p;
}
}
}