org.apache.openjpa.lib.rop.BatchedResultObjectProvider Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* 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
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* KIND, either express or implied. See the License for the
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*/
package org.apache.openjpa.lib.rop;
/**
* A provider for multiple result sets.
* This provider acts as a container of other result providers. The underlying providers
* contain the actual data and are {@link ResultObjectProvider#getResultObject() iterated}
* for the results, while this provider iterates over its underlying providers.
*
* Designed for the specific purpose of getting results from the execution of Stored Procedures
* that can produce more than one result set and an optional update count. Few methods related
* to iterating multiple results and update count mirror the methods in JDBC {@link java.sql.Statement}.
*
*
* @see org.apache.openjpa.kernel.QueryResultCallback
*
* @author Pinaki Poddar
*
*/
public interface BatchedResultObjectProvider extends ResultObjectProvider {
/**
* Gets the next result object provider from its batch.
*/
ResultObjectProvider getResultObject() throws Exception;
/**
* Affirms if this batch contains more results.
*/
boolean hasMoreResults();
/**
* Gets the result of executing the underlying JDBC statement.
* @return a boolean value whose semantics is same as {@link java.sql.PreparedStatement#execute()}.
*/
boolean getExecutionResult();
/**
* Gets the count of records updated by the underlying JDBC statement.
* @return an integer value whose semantics is same as {@link java.sql.CallableStatement#getUpdateCount()}.
*/
int getUpdateCount();
Object getOut(String name);
Object getOut(int position);
}