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Data types package for Neo4j Procedures
package apoc.export.util;
import org.neo4j.graphdb.GraphDatabaseService;
import org.neo4j.graphdb.Transaction;
/**
* @author mh
* @since 16.01.14
*/
public class BatchTransaction implements AutoCloseable {
private final GraphDatabaseService gdb;
private final int batchSize;
private final Reporter reporter;
Transaction tx;
int count = 0;
int batchCount = 0;
public BatchTransaction(GraphDatabaseService gdb, int batchSize, Reporter reporter) {
this.gdb = gdb;
this.batchSize = batchSize;
this.reporter = reporter;
tx = beginTx();
}
public void increment() {
count++;batchCount++;
if (batchCount >= batchSize) {
doCommit();
}
}
private void doCommit() {
tx.commit();
tx.close();
if (reporter!=null) reporter.progress("commit after " + count + " row(s) ");
tx = beginTx();
batchCount = 0;
}
private Transaction beginTx() {
return gdb.beginTx();
}
@Override
public void close() {
if (tx!=null) {
tx.commit();
tx.close();
if (reporter!=null) reporter.progress("finish after " + count + " row(s) ");
}
}
public Transaction getTransaction() {
return tx;
}
}
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