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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.graphbuilder.impl;
import java.util.Iterator;
import org.apache.tuscany.das.rdb.util.DebugUtil;
import commonj.sdo.DataObject;
import commonj.sdo.Property;
import commonj.sdo.Type;
import commonj.sdo.helper.DataFactory;
public class DataObjectMaker {
private final DataObject rootObject;
private boolean debug = false;
public DataObjectMaker(DataObject root) {
this.rootObject = root;
}
/**
* @param tableData
* @return
*/
public DataObject createAndAddDataObject(TableData tableData,
ResultMetadata resultMetadata) {
// Get a Type from the package and create a standalone DataObject
DebugUtil.debugln(getClass(), this.debug, "Looking for Type for "
+ tableData.getTableName());
Type tableClass = findTableTypeByPropertyName(tableData.getTableName());
if (tableClass == null)
throw new RuntimeException("An SDO Type with name "
+ tableData.getTableName() + " was not found");
DataObject obj = DataFactory.INSTANCE.create(tableClass);
// Now, check to see if the root data object has a containment reference
// to this EClass. If so, add it to the graph. If not, it will be taken
// care
// of when we process relationships
Iterator i = this.rootObject.getType().getProperties().iterator();
while (i.hasNext()) {
Property p = (Property) i.next();
if (p.isContainment() && p.getType().equals(tableClass)) {
if (p.isMany())
rootObject.getList(p).add(obj);
// TODO This was a performance optimization for EMF in SDO 1.1,
// check to see if there is
// something equivalent in SDO 2.0
// ((InternalEList) this.dataGraph.eGet(ref)).addUnique(obj);
else
this.rootObject.set(p, obj);
}
}
Iterator columnNames = resultMetadata.getColumnNames(
tableData.getTableName()).iterator();
while (columnNames.hasNext()) {
String columnName = (String) columnNames.next();
DataObject dataObject = (DataObject) obj;
Property p = findProperty(dataObject.getType(), columnName);
Object value = tableData.getColumnData(columnName);
dataObject.set(p, value);
}
return obj;
}
// temporary, ignoring case
private Property findProperty(Type type, String columnName) {
Iterator properties = type.getProperties().iterator();
while (properties.hasNext()) {
Property p = (Property) properties.next();
if (columnName.equalsIgnoreCase(p.getName()))
return p;
}
return null;
}
private Type findTableTypeByPropertyName(String tableName) {
Iterator i = rootObject.getType().getProperties().iterator();
while (i.hasNext()) {
Property p = (Property) i.next();
// System.out.println(p.getType().getName());
if (tableName.equals(p.getType().getName()))
return p.getType();
}
return null;
}
private Type findTableTypeByRootReference(String refName) {
return rootObject.getProperty(refName).getType();
}
}
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