com.wavemaker.runtime.data.export.hqlquery.HqlQueryExtractor Maven / Gradle / Ivy
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* Copyright (C) 2022-2023 WaveMaker, Inc.
*
* 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
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package com.wavemaker.runtime.data.export.hqlquery;
import org.hibernate.ScrollableResults;
import com.wavemaker.runtime.data.export.QueryExtractor;
/**
* @author Anusha Dharmasagar
* @since 22/5/17
*/
public class HqlQueryExtractor implements QueryExtractor {
private ScrollableResults results;
private int currentIndex;
public HqlQueryExtractor(final ScrollableResults results) {
this.results = results;
}
@Override
public boolean next() throws Exception {
final boolean hasNext = results.next();
this.currentIndex++;
return hasNext;
}
@Override
public boolean isFirstRow() {
//since isFirst() or getRow() methods in org.hibernate.ScrollableResults are not supported in few DBs.
return currentIndex == 1;
}
@Override
public Object getCurrentRow() throws Exception {
return results.get(0);
}
}