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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
* under the License.
*/
#include "apache/das/rdb/RelationshipStatement.h"
#include "apache/das/rdb/Relationship.h"
namespace apache {
namespace das {
namespace rdb {
RelationshipStatement::RelationshipStatement(const Relationship& relationship, const KeyDataList* keyDataList) {
this->relationship = &relationship;
this->keyDataList = keyDataList;
executed = false;
}
void RelationshipStatement::setDASDataObject(DASDataObject& dataObject) {
this->dataObject = &dataObject;
}
RelationshipStatement::~RelationshipStatement(void) {}
bool RelationshipStatement::isUnset(void) const {
return keyDataList == 0;
}
DASDataObject& RelationshipStatement::getDASDataObject(void) const {
return *dataObject;
}
void RelationshipStatement::setFKList(const KeyDataList* keyDataList) {
this->keyDataList = keyDataList;
}
void RelationshipStatement::execute(StatementPtr statement) {
if (!executed) {
const std::map<std::string, const KeyPair*>& keyPairs = relationship->getKeyPairs();
std::string stmt;
stmt.append("update ").append(relationship->getFKTableName()).append(" set");
unsigned int i = 1;
for (std::map<std::string, const KeyPair*>::const_iterator it = keyPairs.begin() ; it != keyPairs.end() ; it++) {
stmt.append(" ").append(it->second->getFKColumnName()).append("=");
if (keyDataList == 0) {
stmt.append(SQL_NULL_VALUE);
} else {
KeyDataList::const_iterator pkIt = keyDataList->find(it->second->getPKColumnName());
if (pkIt == keyDataList->end()) {
//throw exception
}
stmt.append(pkIt->second->toSQL());
}
if (i != keyPairs.size()) {
stmt.append(",");
}
i++;
}
const Column* occCol = 0;
if (!dataObject->isOCCChecked()) {
occCol = dataObject->getTable().getOCCColumn();
if (occCol != 0 && occCol->isManaged()) {
stmt.append(occCol->getName()).append("=").append(StringWrapper::toString(dataObject->getNewOCC() + 1));
}
}
stmt.append(" ").append(dataObject->getWhereStmt()).append(";");
bool noData = false;
ResultSetPtr rs;
try {
rs = statement->executeQuery(stmt);
} catch (SQLException& ex) {
if (ex.getODBCReturnCode() == SQL_NO_DATA) {
noData = true;
} else {
throw;
}
}
if (!dataObject->isOCCChecked()) {
if (occCol != 0 && (noData || rs->getRowCount() == 0)) {
throw DASOptimisticConcurrencyControlException();
} else {
dataObject->setOCCChecked(true);
}
}
executed = true;
}
}
};
};
};
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