/*
* Copyright 2002-2007 the original author or authors.
*
* Licensed 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.
*/
package org.springframework.jdbc.core.support;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import org.springframework.jdbc.core.InterruptibleBatchPreparedStatementSetter;
/**
* Abstract implementation of the {@link InterruptibleBatchPreparedStatementSetter}
* interface, combining the check for available values and setting of those
* into a single callback method {@link #setValuesIfAvailable}.
*
* @author Juergen Hoeller
* @since 2.0
* @see #setValuesIfAvailable
*/
public abstract class AbstractInterruptibleBatchPreparedStatementSetter
implements InterruptibleBatchPreparedStatementSetter {
private boolean exhausted;
/**
* This implementation calls {@link #setValuesIfAvailable}
* and sets this instance's exhaustion flag accordingly.
*/
public final void setValues(PreparedStatement ps, int i) throws SQLException {
this.exhausted = !setValuesIfAvailable(ps, i);
}
/**
* This implementation return this instance's current exhaustion flag.
*/
public final boolean isBatchExhausted(int i) {
return this.exhausted;
}
/**
* This implementation returns <code>Integer.MAX_VALUE</code>.
* Can be overridden in subclasses to lower the maximum batch size.
*/
public int getBatchSize() {
return Integer.MAX_VALUE;
}
/**
* Check for available values and set them on the given PreparedStatement.
* If no values are available anymore, return <code>false</code>.
* @param ps PreparedStatement we'll invoke setter methods on
* @param i index of the statement we're issuing in the batch, starting from 0
* @return whether there were values to apply (that is, whether the applied
* parameters should be added to the batch and this method should be called
* for a further iteration)
* @throws SQLException if a SQLException is encountered
* (i.e. there is no need to catch SQLException)
*/
protected abstract boolean setValuesIfAvailable(PreparedStatement ps, int i) throws SQLException;
}
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