org.hibernate.dialect.pagination.LegacyLimitHandler Maven / Gradle / Ivy
package org.hibernate.dialect.pagination;
import org.hibernate.dialect.Dialect;
import org.hibernate.engine.spi.RowSelection;
/**
* Limit handler that delegates all operations to the underlying dialect.
*
* @author Lukasz Antoniak (lukasz dot antoniak at gmail dot com)
*/
public class LegacyLimitHandler extends AbstractLimitHandler {
private final Dialect dialect;
public LegacyLimitHandler(Dialect dialect, String sql, RowSelection selection) {
super( sql, selection );
this.dialect = dialect;
}
public boolean supportsLimit() {
return dialect.supportsLimit();
}
public boolean supportsLimitOffset() {
return dialect.supportsLimitOffset();
}
public boolean supportsVariableLimit() {
return dialect.supportsVariableLimit();
}
public boolean bindLimitParametersInReverseOrder() {
return dialect.bindLimitParametersInReverseOrder();
}
public boolean bindLimitParametersFirst() {
return dialect.bindLimitParametersFirst();
}
public boolean useMaxForLimit() {
return dialect.useMaxForLimit();
}
public boolean forceLimitUsage() {
return dialect.forceLimitUsage();
}
public int convertToFirstRowValue(int zeroBasedFirstResult) {
return dialect.convertToFirstRowValue( zeroBasedFirstResult );
}
public String getProcessedSql() {
boolean useLimitOffset = supportsLimit() && supportsLimitOffset()
&& LimitHelper.hasFirstRow( selection ) && LimitHelper.hasMaxRows( selection );
return dialect.getLimitString(
sql, useLimitOffset ? LimitHelper.getFirstRow( selection ) : 0, getMaxOrLimit()
);
}
}