io.ebean.config.dbplatform.SequenceStepIdGenerator Maven / Gradle / Ivy
package io.ebean.config.dbplatform;
import io.ebean.BackgroundExecutor;
import javax.sql.DataSource;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
/**
* Database sequence based IdGenerator using Sequence Step (e.g. step 50).
*/
public abstract class SequenceStepIdGenerator extends SequenceIdGenerator {
/**
* Construct with stepSize (typically 50).
*/
protected SequenceStepIdGenerator(BackgroundExecutor be, DataSource ds, String seqName, int stepSize) {
super(be, ds, seqName, stepSize);
}
/**
* Add the next set of Ids as the next value plus all the following numbers up to the step size.
*/
@Override
protected List readIds(ResultSet resultSet, int ignoreRequestSize) throws SQLException {
List newIds = new ArrayList<>(allocationSize);
if (resultSet.next()) {
long start = resultSet.getLong(1);
for (int i = 0; i < allocationSize; i++) {
newIds.add(start + i);
}
}
return newIds;
}
}
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