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fix(bqjdbc): pass rowsInPage with TableResult #13238

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fix(bqjdbc): pass rowsInPage with TableResult
Neenu1995 May 20, 2026
9c142bf
chore: add local skills
Neenu1995 May 20, 2026
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Compare string with Objects.equals
Neenu1995 May 20, 2026
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get page size for all pages
Neenu1995 May 20, 2026
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4 changes: 3 additions & 1 deletion ...e-cloud-bigquery-jdbc/src/main/java/com/google/cloud/bigquery/jdbc/BigQueryStatement.java
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Original file line number Diff line number Diff line change
Expand Up @@ -981,7 +981,9 @@ private boolean meetsReadRatio(TableResult results) {
return false;
}

long pageSize = querySettings.getMaxResultPerPage();
Long rowsInPage = results.getRowsInPage();
long pageSize =
(rowsInPage != null && rowsInPage > 0) ? rowsInPage : querySettings.getMaxResultPerPage();

// Prevent division by zero due to potential overflows/empty sets:
if (pageSize <= 0) {
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3 changes: 3 additions & 0 deletions ...-bigquery/google-cloud-bigquery/src/main/java/com/google/cloud/bigquery/BigQueryImpl.java
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Expand Up @@ -1685,6 +1685,7 @@ && getOptions().getOpenTelemetryTracer() != null) {
.setSchema(schema)
.setTotalRows(data.y())
.setPageNoSchema(data.x())
.setRowsInPage(data.x() != null ? (long) Iterables.size(data.x().getValues()) : 0L)
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@logachev logachev May 21, 2026

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Can we guarantee somehow that it would be using .size() to avoid O(N) here?

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@Neenu1995 Neenu1995 May 21, 2026 •
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We can guarantee $O(1)$ performance because the row values in TableResult pages are always materialized into an ImmutableList under the hood. Since ImmutableList implements Collection, any size check—whether through our explicit instanceof check or Guava's Iterables.size—calls the list's size() method directly. This allows Java to look up the count instantly instead of looping through each row one by one.

But if we want we can add an explicit instanceof check here. Should I add it?

.build();
} finally {
if (tableDataList != null) {
Expand Down Expand Up @@ -2016,6 +2017,7 @@ public com.google.api.services.bigquery.model.QueryResponse call()
.setJobId(jobId)
.setQueryId(results.getQueryId())
.setJobCreationReason(JobCreationReason.fromPb(results.getJobCreationReason()))
.setRowsInPage(results.getRows() != null ? (long) results.getRows().size() : 0L)
.build();
}
// only 1 page of result
Expand All @@ -2035,6 +2037,7 @@ public com.google.api.services.bigquery.model.QueryResponse call()
results.getJobReference() != null ? JobId.fromPb(results.getJobReference()) : null)
.setQueryId(results.getQueryId())
.setJobCreationReason(JobCreationReason.fromPb(results.getJobCreationReason()))
.setRowsInPage(results.getRows() != null ? (long) results.getRows().size() : 0L)
.build();
}

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1 change: 1 addition & 0 deletions java-bigquery/google-cloud-bigquery/src/main/java/com/google/cloud/bigquery/Job.java
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Expand Up @@ -424,6 +424,7 @@ public TableResult getQueryResults(QueryResultsOption... options)
.setJobId(job.getJobId())
.setTotalRows(0L)
.setPageNoSchema(new PageImpl<FieldValueList>(null, "", null))
.setRowsInPage(0L)
.build();
return emptyTableResult;
}
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13 changes: 11 additions & 2 deletions java-bigquery/google-cloud-bigquery/src/main/java/com/google/cloud/bigquery/TableResult.java
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Expand Up @@ -49,6 +49,8 @@ public abstract static class Builder {

public abstract TableResult.Builder setJobCreationReason(JobCreationReason jobCreationReason);

public abstract TableResult.Builder setRowsInPage(Long rowsInPage);

/** Creates a @code TableResult} object. */
public abstract TableResult build();
}
Expand Down Expand Up @@ -81,6 +83,10 @@ public static Builder newBuilder() {
@Nullable
public abstract JobCreationReason getJobCreationReason();

/** Returns the number of rows in the current page of results. */
@Nullable
public abstract Long getRowsInPage();

@Override
public boolean hasNextPage() {
return getPageNoSchema().hasNextPage();
Expand Down Expand Up @@ -137,12 +143,14 @@ public String toString() {
.add("totalRows", getTotalRows())
.add("cursor", getNextPageToken())
.add("queryId", getQueryId())
.add("rowsInPage", getRowsInPage())
.toString();
}

@Override
public final int hashCode() {
return Objects.hash(getPageNoSchema(), getSchema(), getTotalRows(), getQueryId());
return Objects.hash(
getPageNoSchema(), getSchema(), getTotalRows(), getQueryId(), getRowsInPage());
}

@Override
Expand All @@ -158,6 +166,7 @@ public final boolean equals(Object obj) {
&& Iterators.elementsEqual(getValues().iterator(), response.getValues().iterator())
&& Objects.equals(getSchema(), response.getSchema())
&& getTotalRows() == response.getTotalRows()
&& getQueryId() == response.getQueryId();
&& getQueryId() == response.getQueryId()
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&& Objects.equals(getRowsInPage(), response.getRowsInPage());
}
}
1 change: 1 addition & 0 deletions ...uery/google-cloud-bigquery/src/test/java/com/google/cloud/bigquery/SerializationTest.java
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Expand Up @@ -210,6 +210,7 @@ public class SerializationTest extends BaseSerializationTest {
.setSchema(Schema.of())
.setTotalRows(0L)
.setPageNoSchema(new PageImpl(null, "", ImmutableList.of()))
.setRowsInPage(0L)
.build();
private static final BigQuery BIGQUERY =
BigQueryOptions.newBuilder().setProjectId("p1").build().getService();
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11 changes: 10 additions & 1 deletion ...gquery/google-cloud-bigquery/src/test/java/com/google/cloud/bigquery/TableResultTest.java
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Expand Up @@ -54,10 +54,15 @@ private static FieldValueList newFieldValueList(String s) {
@Test
void testNullSchema() {
TableResult result =
TableResult.newBuilder().setTotalRows(3L).setPageNoSchema(INNER_PAGE_0).build();
TableResult.newBuilder()
.setTotalRows(3L)
.setPageNoSchema(INNER_PAGE_0)
.setRowsInPage(2L)
.build();
assertThat(result.getSchema()).isNull();
assertThat(result.hasNextPage()).isTrue();
assertThat(result.getNextPageToken()).isNotNull();
assertThat(result.getRowsInPage()).isEqualTo(2L);
assertThat(result.getValues())
.containsExactly(newFieldValueList("0"), newFieldValueList("1"))
.inOrder();
Expand All @@ -66,6 +71,7 @@ void testNullSchema() {
assertThat(next.getSchema()).isNull();
assertThat(next.hasNextPage()).isFalse();
assertThat(next.getNextPageToken()).isNull();
assertThat(next.getRowsInPage()).isNull();
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assertThat(next.getValues()).containsExactly(newFieldValueList("2"));
assertThat(next.getNextPage()).isNull();

Expand All @@ -81,10 +87,12 @@ void testSchema() {
.setSchema(SCHEMA)
.setTotalRows(3L)
.setPageNoSchema(INNER_PAGE_0)
.setRowsInPage(2L)
.build();
assertThat(result.getSchema()).isEqualTo(SCHEMA);
assertThat(result.hasNextPage()).isTrue();
assertThat(result.getNextPageToken()).isNotNull();
assertThat(result.getRowsInPage()).isEqualTo(2L);
assertThat(result.getValues())
.containsExactly(
newFieldValueList("0").withSchema(SCHEMA.getFields()),
Expand All @@ -95,6 +103,7 @@ void testSchema() {
assertThat(next.getSchema()).isEqualTo(SCHEMA);
assertThat(next.hasNextPage()).isFalse();
assertThat(next.getNextPageToken()).isNull();
assertThat(next.getRowsInPage()).isNull();
assertThat(next.getValues())
.containsExactly(newFieldValueList("2").withSchema(SCHEMA.getFields()));
assertThat(next.getNextPage()).isNull();
Expand Down
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