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* 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.cayenne.access.trans;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.apache.cayenne.dba.DbAdapter;
import org.apache.cayenne.map.DbAttribute;
import org.apache.cayenne.query.BatchQuery;
import org.apache.cayenne.query.UpdateBatchQuery;
public class LOBUpdateBatchQueryBuilder extends LOBBatchQueryBuilder {
public LOBUpdateBatchQueryBuilder(DbAdapter adapter) {
super(adapter);
}
@Override
public List getValuesForLOBUpdateParameters(BatchQuery query) {
int len = query.getDbAttributes().size();
UpdateBatchQuery updateBatch = (UpdateBatchQuery) query;
List values = new ArrayList(len);
List<DbAttribute> qualifierAttributes = updateBatch.getQualifierAttributes();
List<DbAttribute> updatedDbAttributes = updateBatch.getUpdatedAttributes();
int updatedLen = updatedDbAttributes.size();
int qualifierLen = qualifierAttributes.size();
for (int i = 0; i < updatedLen; i++) {
DbAttribute attribute = updatedDbAttributes.get(i);
Object value = query.getValue(i);
if(isUpdateableColumn(value, attribute.getType())) {
values.add(value);
}
}
for (int i = 0; i < qualifierLen; i++) {
values.add(query.getValue(updatedLen + i));
}
return values;
}
@Override
public String createSqlString(BatchQuery batch) {
UpdateBatchQuery updateBatch = (UpdateBatchQuery) batch;
String table = batch.getDbEntity().getFullyQualifiedName();
List<DbAttribute> idDbAttributes = updateBatch.getQualifierAttributes();
List<DbAttribute> updatedDbAttributes = updateBatch.getUpdatedAttributes();
StringBuffer query = new StringBuffer("UPDATE ");
query.append(table).append(" SET ");
int len = updatedDbAttributes.size();
for (int i = 0; i < len; i++) {
if (i > 0) {
query.append(", ");
}
DbAttribute attribute = updatedDbAttributes.get(i);
query.append(attribute.getName()).append(" = ");
appendUpdatedParameter(query, attribute, batch.getValue(i));
}
query.append(" WHERE ");
Iterator<DbAttribute> i = idDbAttributes.iterator();
while (i.hasNext()) {
DbAttribute attribute = i.next();
appendDbAttribute(query, attribute);
query.append(" = ?");
if (i.hasNext()) {
query.append(" AND ");
}
}
return query.toString();
}
}