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/**
*
* Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
*
* 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.apache.tuscany.das.rdb.impl;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
/**
* DeleteList will sort delete operations so that child objects are deleted
* before their parents
*
*
*/
public class DeleteList {
private HashMap opsByTableName = new HashMap();
private ArrayList order;
private ArrayList deleteOperations = new ArrayList();
public DeleteList() {
super();
}
public void add(ChangeOperation op) {
if (( order == null ) || ( op.getTableName() == null ) ) {
deleteOperations.add(op);
} else {
String name = op.getTableName();
ArrayList ops = (ArrayList) opsByTableName.get(name);
if (ops == null)
ops = new ArrayList();
ops.add(op);
opsByTableName.put(name, ops);
}
}
public Collection getSortedList() {
if (( order != null ) && ( opsByTableName.keySet().size() > 0) ) {
Iterator i = this.order.iterator();
while (i.hasNext()) {
String name = (String) i.next();
deleteOperations.addAll((Collection) opsByTableName.get(name));
}
}
return deleteOperations;
}
public void setOrder(ArrayList deleteOrder) {
this.order = deleteOrder;
}
}
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