/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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
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*/
package org.apache.isis.objectstore.sql.jdbc;
import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
import org.apache.isis.core.metamodel.adapter.oid.Oid;
import org.apache.isis.core.metamodel.adapter.oid.RootOid;
import org.apache.isis.core.metamodel.spec.ObjectSpecification;
import org.apache.isis.objectstore.sql.DatabaseConnector;
import org.apache.isis.objectstore.sql.IdMappingAbstract;
import org.apache.isis.objectstore.sql.Results;
import org.apache.isis.objectstore.sql.Sql;
import org.apache.isis.objectstore.sql.SqlObjectStoreException;
import org.apache.isis.objectstore.sql.mapping.ObjectReferenceMapping;
public class JdbcPolymorphicObjectReferenceMapping extends IdMappingAbstract implements ObjectReferenceMapping {
private ObjectSpecification specification;
public JdbcPolymorphicObjectReferenceMapping(final String columnName) {
final String idColumn = Sql.sqlName(columnName);
setColumn(idColumn);
}
public void setObjectSpecification(final ObjectSpecification specification) {
this.specification = specification;
}
@Override
public void appendUpdateValues(final DatabaseConnector connector, final StringBuffer sql, final ObjectAdapter adapter) {
sql.append(getColumn());
if (adapter == null) {
sql.append("= NULL ");
} else {
sql.append("= ?");
// sql.append(primaryKey(object.getOid()));
final RootOid oid = (RootOid) adapter.getOid();
connector.addToQueryValues(primaryKey(oid));
}
}
public ObjectAdapter initializeField(final Results rs) {
final Oid oid = recreateOid(rs, specification);
if (oid != null) {
if (specification.isAbstract()) {
throw new SqlObjectStoreException("NOT DEALING WITH POLYMORPHIC ASSOCIATIONS");
} else {
return getAdapter(specification, oid);
}
} else {
return null;
}
}
}