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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;
import org.apache.tuscany.das.rdb.util.DebugUtil;
/**
* InsertList will sort ChangeOperation objects so that parents are inserted
* before children
*
*
*/
public class InsertList {
private HashMap opsByTableName = new HashMap();
private ArrayList insertOperations = new ArrayList();
private ArrayList order;
private static final boolean debug = false;
public void add(ChangeOperation op) {
DebugUtil.debugln(getClass(), debug, "Adding insert operation ");
// If nothing has been added yet, or this is no ordering, simply
// add the operation to the list
if ((order.size() == 0) || (op.getTableName() == null)) {
insertOperations.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() {
DebugUtil.debugln(getClass(), debug, "Getting sorted insert list");
if ((order.size() > 0) && opsByTableName.keySet().size() > 0) {
Iterator i = this.order.iterator();
while (i.hasNext()) {
String name = (String) i.next();
DebugUtil.debugln(getClass(), debug,
"Adding operations for table " + name);
// A null here means a table is in the config but hasn't been changed here
if (opsByTableName.get(name) != null)
insertOperations.addAll((Collection) opsByTableName
.get(name));
}
}
DebugUtil.debugln(getClass(), debug, "Returning "
+ insertOperations.size() + " insert operations");
return insertOperations;
}
public void setOrder(ArrayList insertOrder) {
this.order = insertOrder;
}
}
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