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/*
* Copyright (c) 1998, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0,
* or the Eclipse Distribution License v. 1.0 which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
*/
// Contributors:
// Oracle - initial API and implementation from Oracle TopLink
package org.eclipse.persistence.platform.database.oracle;
import java.sql.Statement;
import org.eclipse.persistence.internal.databaseaccess.DatabaseCall;
import oracle.jdbc.OraclePreparedStatement;
/**
* <p><b>Purpose:</b>
* Supports usage of certain Oracle JDBC specific APIs.
*/
public class Oracle10Platform extends Oracle9Platform {
public Oracle10Platform(){
super();
}
/**
* Build the hint string used for first rows.
*
* Allows it to be overridden
* @param max
* @return
*/
@Override
protected String buildFirstRowsHint(int max){
//bug 374136: override setting the FIRST_ROWS hint as this is not needed on Oracle10g
return "";
}
/**
* Internal: This gets called on each batch statement execution
* Needs to be implemented so that it returns the number of rows successfully modified
* by this statement for optimistic locking purposes (if useNativeBatchWriting is enabled, and
* the call uses optimistic locking).
*
* @param isStatementPrepared - flag is set to true if this statement is prepared
* @return - number of rows modified/deleted by this statement
*/
@Override
public int executeBatch(Statement statement, boolean isStatementPrepared) throws java.sql.SQLException {
if (usesNativeBatchWriting() && isStatementPrepared) {
int rowCount = 0;
try {
rowCount = ((OraclePreparedStatement)statement).sendBatch();
} finally {
((OraclePreparedStatement) statement).setExecuteBatch(1);
}
return rowCount;
} else {
@SuppressWarnings("unused")
int[] results = statement.executeBatch();
return statement.getUpdateCount();
}
}
/**
* INTERNAL:
* Indicate whether app. server should unwrap connection
* to use lob locator.
* No need to unwrap connection because
* writeLob method doesn't use oracle proprietary classes.
*/
@Override
public boolean isNativeConnectionRequiredForLobLocator() {
return false;
}
/**
* INTERNAL:
* Supports Batch Writing with Optimistic Locking.
*/
@Override
public boolean canBatchWriteWithOptimisticLocking(DatabaseCall call){
return true;//usesNativeBatchWriting || !call.hasParameters();
}
}
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