/*
* JBoss, Home of Professional Open Source
* Copyright 2010, Red Hat, Inc. and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.richfaces.model.iterators;
import javax.faces.component.UIComponent;
import org.richfaces.model.DeclarativeModelKey;
import org.richfaces.model.DeclarativeTreeDataModelTuple;
import org.richfaces.model.SequenceRowKey;
import org.richfaces.model.TreeDataModelTuple;
import com.google.common.collect.UnmodifiableIterator;
/**
* @author Nick Belaevski
*
*/
public abstract class BaseTupleIterator extends UnmodifiableIterator<TreeDataModelTuple> {
private SequenceRowKey baseKey;
private UIComponent component;
private Object rowKey;
private Object data;
public BaseTupleIterator(SequenceRowKey baseKey) {
this(baseKey, null);
}
public BaseTupleIterator(SequenceRowKey baseKey, UIComponent component) {
super();
this.baseKey = baseKey;
this.component = component;
}
protected abstract void proceedToNext();
protected UIComponent getComponent() {
return component;
}
protected SequenceRowKey getBaseKey() {
return baseKey;
}
protected void setKeyAndData(Object rowKey, Object data) {
this.rowKey = rowKey;
this.data = data;
}
protected Object getKey() {
return rowKey;
}
public final TreeDataModelTuple next() {
proceedToNext();
Object modelKey = getWrappedKey();
SequenceRowKey nextKey = getCompositeKey(modelKey);
return createTuple(nextKey);
}
protected TreeDataModelTuple createTuple(SequenceRowKey key) {
TreeDataModelTuple result;
if (component != null) {
result = new DeclarativeTreeDataModelTuple(key, data, component);
} else {
result = new TreeDataModelTuple(key, data);
}
return result;
}
protected Object getWrappedKey() {
Object modelKey;
if (getComponent() != null) {
modelKey = new DeclarativeModelKey(getComponent().getId(), getKey());
} else {
modelKey = getKey();
}
return modelKey;
}
protected SequenceRowKey getCompositeKey(Object modelKey) {
SequenceRowKey result;
if (getBaseKey() != null) {
result = getBaseKey().append(modelKey);
} else {
result = new SequenceRowKey(modelKey);
}
return result;
}
}