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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.schema;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import org.apache.tuscany.das.rdb.config.Relationship;
import org.apache.tuscany.das.rdb.config.wrapper.MappingWrapper;
import org.apache.tuscany.das.rdb.graphbuilder.impl.GraphBuilderMetadata;
import org.apache.tuscany.das.rdb.graphbuilder.impl.ResultMetadata;
import org.apache.tuscany.das.rdb.util.DebugUtil;
import org.apache.tuscany.sdo.util.DataObjectUtil;
import org.apache.tuscany.sdo.util.SDOUtil;
import commonj.sdo.Property;
import commonj.sdo.Type;
import commonj.sdo.helper.TypeHelper;
/**
*
* An ESchemaMaker is used to create an EMF Schema from an instance of JDBC
* Mediator Metadata.
*
*/
public class ESchemaMaker {
private final GraphBuilderMetadata metadata;
private boolean debug = false;
/**
* Constructor for ESchemaMaker. Creates an SDO model based on the metadata
* passed in.
*
* @param metadata
*/
public ESchemaMaker(GraphBuilderMetadata metadata) {
this.metadata = metadata;
}
/**
* Creates an EMF Schema by using the
*
* @link TableMaker and
* @link RelationshipMaker to transform
* @link Metadata elements into EMF Schema elements.
*/
public Type createTypes() {
TypeHelper types = SDOUtil.createTypeHelper();
DataObjectUtil.initRuntime();
SDOUtil.createDataGraph();
Type rootType = SDOUtil.createType(types, getURI(), "DataGraphRoot", false);
Iterator iter = metadata.getResultMetadata().iterator();
while (iter.hasNext()) {
ResultMetadata resultMetadata = (ResultMetadata) iter.next();
Iterator names = resultMetadata.getAllTablePropertyNames()
.iterator();
while (names.hasNext()) {
String tableName = (String) names.next();
Type tableType = SDOUtil.createType(types, getURI(), tableName, false);
Property property = SDOUtil.createProperty(rootType, tableName, tableType);
SDOUtil.setMany(property,true);
SDOUtil.setContainment(property, true);
}
// TODO tablePropertyMap is temporary until Tuscany-203 is fixed
HashMap tablePropertyMap = new HashMap();
for (int i = 1; i <= resultMetadata.getColumnNames().size(); i++) {
Property ref = rootType.getProperty(resultMetadata.getTablePropertyName(i));
// TODO Temporary code to check to see if a property has already been added.
// Replace when Tuscany-203 is fixed
ArrayList addedProperties = (ArrayList) tablePropertyMap.get(ref.getName());
if ( addedProperties == null ) {
addedProperties = new ArrayList();
tablePropertyMap.put(ref.getName(), addedProperties);
}
if (ref == null)
throw new RuntimeException("Could not find table "
+ resultMetadata.getTablePropertyName(i)
+ " in the SDO model");
String columnName = resultMetadata.getColumnPropertyName(i);
// TODO temporary check until Tuscany-203 is fixed
if ( !addedProperties.contains(columnName)) {
addedProperties.add(columnName);
Type atype = (Type) resultMetadata.getDataType(i);
SDOUtil.createProperty(ref.getType(), columnName, atype);
DebugUtil.debugln(getClass(), debug, "Adding column "
+ columnName + " to "
+ resultMetadata.getTablePropertyName(i));
}
}
}
if (metadata.hasMappingModel()) {
MappingWrapper wrapper = new MappingWrapper(metadata.getMapping());
Iterator i = metadata.getRelationships().iterator();
while (i.hasNext()) {
Relationship r = (Relationship) i.next();
Type parent = rootType.getProperty(
wrapper.getTablePropertyName(r.getPrimaryKeyTable())).getType();
Type child = rootType.getProperty(
wrapper.getTablePropertyName(r.getForeignKeyTable())).getType();
if (parent == null) {
throw new RuntimeException("The parent table ("
+ r.getPrimaryKeyTable() + ") in relationship "
+ r.getName()
+ " was not found in the mapping information.");
} else if (child == null) {
throw new RuntimeException("The child table ("
+ r.getForeignKeyTable() + ") in relationship "
+ r.getName()
+ " was not found in the mapping information.");
}
// ReferenceImpl ref = refMaker.createReference(r, parent, child);
Property parentProp = SDOUtil.createProperty(parent, r.getName(), child);
Property childProp = SDOUtil.createProperty(child, r.getName() + "_opposite", parent);
SDOUtil.setOpposite(parentProp, childProp);
SDOUtil.setOpposite(childProp, parentProp);
SDOUtil.setMany(parentProp, r.isMany());
}
}
return rootType;
}
private String getURI() {
return "http:///org.apache.tuscany.das.rdb/das";
}
}
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