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remove processContext usage across examples (java and kotlin) #37937

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2853484
remove processContext usage across examples (java and kotlin)
stankiewicz Mar 24, 2026
c0fbb81
spotless
stankiewicz Mar 24, 2026
dccb795
fix compilation issues
stankiewicz Mar 24, 2026
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16 changes: 9 additions & 7 deletions ...java/iceberg/src/main/java/org/apache/beam/examples/iceberg/IcebergBatchWriteExample.java
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Expand Up @@ -28,6 +28,8 @@
import org.apache.beam.sdk.options.Validation;
import org.apache.beam.sdk.schemas.Schema;
import org.apache.beam.sdk.transforms.DoFn;
import org.apache.beam.sdk.transforms.DoFn.Element;
import org.apache.beam.sdk.transforms.DoFn.OutputReceiver;
import org.apache.beam.sdk.transforms.MapElements;
import org.apache.beam.sdk.transforms.PTransform;
import org.apache.beam.sdk.transforms.ParDo;
Expand Down Expand Up @@ -74,9 +76,9 @@ private static Row flattenAnalyticsRow(Row row) {

static class ExtractBrowserTransactionsFn extends DoFn<Row, KV<String, Long>> {
@ProcessElement
public void processElement(ProcessContext c) {
Row row = c.element();
c.output(
public void processElement(@Element Row element, OutputReceiver<KV<String, Long>> receiver) {
Row row = element;
receiver.output(
KV.of(
Preconditions.checkStateNotNull(row.getString("browser")),
Preconditions.checkStateNotNull(row.getInt64("transactions"))));
Expand All @@ -85,13 +87,13 @@ public void processElement(ProcessContext c) {

static class FormatCountsFn extends DoFn<KV<String, Long>, Row> {
@ProcessElement
public void processElement(ProcessContext c) {
public void processElement(@Element KV<String, Long> element, OutputReceiver<Row> receiver) {
Row row =
Row.withSchema(AGGREGATED_SCHEMA)
.withFieldValue("browser", c.element().getKey())
.withFieldValue("transaction_count", c.element().getValue())
.withFieldValue("browser", element.getKey())
.withFieldValue("transaction_count", element.getValue())
.build();
c.output(row);
receiver.output(row);
}
}

Expand Down
8 changes: 5 additions & 3 deletions examples/java/sql/src/main/java/org/apache/beam/examples/SchemaTransformExample.java
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Expand Up @@ -42,6 +42,8 @@
import org.apache.beam.sdk.schemas.transforms.Select;
import org.apache.beam.sdk.transforms.Create;
import org.apache.beam.sdk.transforms.DoFn;
import org.apache.beam.sdk.transforms.DoFn.Element;
import org.apache.beam.sdk.transforms.DoFn.OutputReceiver;
import org.apache.beam.sdk.transforms.Max;
import org.apache.beam.sdk.transforms.Min;
import org.apache.beam.sdk.transforms.ParDo;
Expand Down Expand Up @@ -101,9 +103,9 @@ public LogOutput(String prefix) {
}

@ProcessElement
public void processElement(ProcessContext c) throws Exception {
LOG.info("{}{}", prefix, c.element());
c.output(c.element());
public void processElement(@Element T element, OutputReceiver<T> receiver) throws Exception {
LOG.info("{}{}", prefix, element);
receiver.output(element);
}
}
}
8 changes: 5 additions & 3 deletions examples/java/sql/src/main/java/org/apache/beam/examples/SqlTransformExample.java
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Expand Up @@ -41,6 +41,8 @@
import org.apache.beam.sdk.schemas.Schema;
import org.apache.beam.sdk.transforms.Create;
import org.apache.beam.sdk.transforms.DoFn;
import org.apache.beam.sdk.transforms.DoFn.Element;
import org.apache.beam.sdk.transforms.DoFn.OutputReceiver;
import org.apache.beam.sdk.transforms.ParDo;
import org.apache.beam.sdk.values.PCollection;
import org.apache.beam.sdk.values.Row;
Expand Down Expand Up @@ -95,9 +97,9 @@ public LogOutput(String prefix) {
}

@ProcessElement
public void processElement(ProcessContext c) throws Exception {
LOG.info("{}{}", prefix, c.element());
c.output(c.element());
public void processElement(@Element T element, OutputReceiver<T> receiver) throws Exception {
LOG.info("{}{}", prefix, element);
receiver.output(element);
}
}
}
8 changes: 5 additions & 3 deletions examples/java/src/main/java/org/apache/beam/examples/ApproximateQuantilesExample.java
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Expand Up @@ -24,6 +24,8 @@
import org.apache.beam.sdk.transforms.ApproximateQuantiles;
import org.apache.beam.sdk.transforms.Create;
import org.apache.beam.sdk.transforms.DoFn;
import org.apache.beam.sdk.transforms.DoFn.Element;
import org.apache.beam.sdk.transforms.DoFn.OutputReceiver;
import org.apache.beam.sdk.transforms.ParDo;
import org.apache.beam.sdk.values.PCollection;
import org.slf4j.Logger;
Expand Down Expand Up @@ -70,9 +72,9 @@ public LogOutput(String prefix) {
}

@ProcessElement
public void processElement(ProcessContext c) throws Exception {
LOG.info("{}{}", prefix, c.element());
c.output(c.element());
public void processElement(@Element T element, OutputReceiver<T> receiver) throws Exception {
LOG.info("{}{}", prefix, element);
receiver.output(element);
}
}
}
17 changes: 11 additions & 6 deletions examples/java/src/main/java/org/apache/beam/examples/CoCombineTransformExample.java
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Expand Up @@ -46,6 +46,8 @@
import org.apache.beam.sdk.transforms.CombineFns;
import org.apache.beam.sdk.transforms.Create;
import org.apache.beam.sdk.transforms.DoFn;
import org.apache.beam.sdk.transforms.DoFn.Element;
import org.apache.beam.sdk.transforms.DoFn.OutputReceiver;
import org.apache.beam.sdk.transforms.Max;
import org.apache.beam.sdk.transforms.Min;
import org.apache.beam.sdk.transforms.ParDo;
Expand Down Expand Up @@ -185,13 +187,16 @@ public Long apply(Long input) {
new DoFn<
KV<Long, CombineFns.CoCombineResult>, KV<Long, Iterable<KV<String, Long>>>>() {
@ProcessElement
public void processElement(ProcessContext c) throws Exception {
CombineFns.CoCombineResult e = c.element().getValue();
public void processElement(
@Element KV<Long, CombineFns.CoCombineResult> element,
OutputReceiver<KV<Long, Iterable<KV<String, Long>>>> receiver)
throws Exception {
CombineFns.CoCombineResult e = element.getValue();
ArrayList<KV<String, Long>> o = new ArrayList<KV<String, Long>>();
o.add(KV.of(minTag.getId(), e.get(minTag)));
o.add(KV.of(maxTag.getId(), e.get(maxTag)));
o.add(KV.of(sumTag.getId(), e.get(sumTag)));
c.output(KV.of(c.element().getKey(), o));
receiver.output(KV.of(element.getKey(), o));
}
}));

Expand All @@ -210,9 +215,9 @@ public LogOutput(String prefix) {
}

@ProcessElement
public void processElement(ProcessContext c) throws Exception {
LOG.info("{}{}", prefix, c.element());
c.output(c.element());
public void processElement(@Element T element, OutputReceiver<T> receiver) throws Exception {
LOG.info("{}{}", prefix, element);
receiver.output(element);
}
}
}
8 changes: 5 additions & 3 deletions examples/java/src/main/java/org/apache/beam/examples/CoGroupByKeyExample.java
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Expand Up @@ -22,6 +22,8 @@
import org.apache.beam.sdk.options.PipelineOptionsFactory;
import org.apache.beam.sdk.transforms.Create;
import org.apache.beam.sdk.transforms.DoFn;
import org.apache.beam.sdk.transforms.DoFn.Element;
import org.apache.beam.sdk.transforms.DoFn.OutputReceiver;
import org.apache.beam.sdk.transforms.ParDo;
import org.apache.beam.sdk.transforms.join.CoGbkResult;
import org.apache.beam.sdk.transforms.join.CoGroupByKey;
Expand Down Expand Up @@ -84,9 +86,9 @@ public LogOutput(String prefix) {
}

@ProcessElement
public void processElement(ProcessContext c) throws Exception {
LOG.info("{}{}", prefix, c.element());
c.output(c.element());
public void processElement(@Element T element, OutputReceiver<T> receiver) throws Exception {
LOG.info("{}{}", prefix, element);
receiver.output(element);
}
}
}
8 changes: 5 additions & 3 deletions examples/java/src/main/java/org/apache/beam/examples/CombineExample.java
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Expand Up @@ -23,6 +23,8 @@
import org.apache.beam.sdk.transforms.Combine;
import org.apache.beam.sdk.transforms.Create;
import org.apache.beam.sdk.transforms.DoFn;
import org.apache.beam.sdk.transforms.DoFn.Element;
import org.apache.beam.sdk.transforms.DoFn.OutputReceiver;
import org.apache.beam.sdk.transforms.ParDo;
import org.apache.beam.sdk.transforms.Sum;
import org.apache.beam.sdk.values.PCollection;
Expand Down Expand Up @@ -68,9 +70,9 @@ public LogOutput(String prefix) {
}

@ProcessElement
public void processElement(ProcessContext c) throws Exception {
LOG.info("{}{}", prefix, c.element());
c.output(c.element());
public void processElement(@Element T element, OutputReceiver<T> receiver) throws Exception {
LOG.info("{}{}", prefix, element);
receiver.output(element);
}
}
}
8 changes: 5 additions & 3 deletions examples/java/src/main/java/org/apache/beam/examples/CountExample.java
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Expand Up @@ -23,6 +23,8 @@
import org.apache.beam.sdk.transforms.Count;
import org.apache.beam.sdk.transforms.Create;
import org.apache.beam.sdk.transforms.DoFn;
import org.apache.beam.sdk.transforms.DoFn.Element;
import org.apache.beam.sdk.transforms.DoFn.OutputReceiver;
import org.apache.beam.sdk.transforms.ParDo;
import org.apache.beam.sdk.values.PCollection;
import org.slf4j.Logger;
Expand Down Expand Up @@ -63,9 +65,9 @@ public LogOutput(String prefix) {
}

@ProcessElement
public void processElement(ProcessContext c) throws Exception {
LOG.info("{}{}", prefix, c.element());
c.output(c.element());
public void processElement(@Element T element, OutputReceiver<T> receiver) throws Exception {
LOG.info("{}{}", prefix, element);
receiver.output(element);
}
}
}
8 changes: 5 additions & 3 deletions examples/java/src/main/java/org/apache/beam/examples/CountPerKeyExample.java
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Expand Up @@ -23,6 +23,8 @@
import org.apache.beam.sdk.transforms.Count;
import org.apache.beam.sdk.transforms.Create;
import org.apache.beam.sdk.transforms.DoFn;
import org.apache.beam.sdk.transforms.DoFn.Element;
import org.apache.beam.sdk.transforms.DoFn.OutputReceiver;
import org.apache.beam.sdk.transforms.ParDo;
import org.apache.beam.sdk.values.KV;
import org.apache.beam.sdk.values.PCollection;
Expand Down Expand Up @@ -67,9 +69,9 @@ public LogOutput(String prefix) {
}

@ProcessElement
public void processElement(ProcessContext c) throws Exception {
LOG.info("{}{}", prefix, c.element());
c.output(c.element());
public void processElement(@Element T element, OutputReceiver<T> receiver) throws Exception {
LOG.info("{}{}", prefix, element);
receiver.output(element);
}
}
}
8 changes: 5 additions & 3 deletions examples/java/src/main/java/org/apache/beam/examples/CreateExample.java
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Expand Up @@ -27,6 +27,8 @@
import org.apache.beam.sdk.options.PipelineOptionsFactory;
import org.apache.beam.sdk.transforms.Create;
import org.apache.beam.sdk.transforms.DoFn;
import org.apache.beam.sdk.transforms.DoFn.Element;
import org.apache.beam.sdk.transforms.DoFn.OutputReceiver;
import org.apache.beam.sdk.transforms.ParDo;
import org.apache.beam.sdk.values.KV;
import org.apache.beam.sdk.values.PCollection;
Expand Down Expand Up @@ -79,9 +81,9 @@ public LogOutput(String prefix) {
}

@ProcessElement
public void processElement(ProcessContext c) throws Exception {
LOG.info("{}{}", prefix, c.element());
c.output(c.element());
public void processElement(@Element T element, OutputReceiver<T> receiver) throws Exception {
LOG.info("{}{}", prefix, element);
receiver.output(element);
}
}
}
13 changes: 8 additions & 5 deletions examples/java/src/main/java/org/apache/beam/examples/DebuggingWordCount.java
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Expand Up @@ -46,6 +46,8 @@
import org.apache.beam.sdk.options.PipelineOptionsFactory;
import org.apache.beam.sdk.testing.PAssert;
import org.apache.beam.sdk.transforms.DoFn;
import org.apache.beam.sdk.transforms.DoFn.Element;
import org.apache.beam.sdk.transforms.DoFn.OutputReceiver;
import org.apache.beam.sdk.transforms.ParDo;
import org.apache.beam.sdk.values.KV;
import org.apache.beam.sdk.values.PCollection;
Expand Down Expand Up @@ -115,18 +117,19 @@ public FilterTextFn(String pattern) {
private final Counter unmatchedWords = Metrics.counter(FilterTextFn.class, "unmatchedWords");

@ProcessElement
public void processElement(ProcessContext c) {
if (filter.matcher(c.element().getKey()).matches()) {
public void processElement(
@Element KV<String, Long> element, OutputReceiver<KV<String, Long>> receiver) {
if (filter.matcher(element.getKey()).matches()) {
// Log at the "DEBUG" level each element that we match. When executing this pipeline
// these log lines will appear only if the log level is set to "DEBUG" or lower.
LOG.debug("Matched: {}", c.element().getKey());
LOG.debug("Matched: {}", element.getKey());
matchedWords.inc();
c.output(c.element());
receiver.output(element);
} else {
// Log at the "TRACE" level each element that is not matched. Different log levels
// can be used to control the verbosity of logging providing an effective mechanism
// to filter less important information.
LOG.trace("Did not match: {}", c.element().getKey());
LOG.trace("Did not match: {}", element.getKey());
unmatchedWords.inc();
}
}
Expand Down
8 changes: 5 additions & 3 deletions examples/java/src/main/java/org/apache/beam/examples/DistinctExample.java
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Expand Up @@ -23,6 +23,8 @@
import org.apache.beam.sdk.transforms.Create;
import org.apache.beam.sdk.transforms.Distinct;
import org.apache.beam.sdk.transforms.DoFn;
import org.apache.beam.sdk.transforms.DoFn.Element;
import org.apache.beam.sdk.transforms.DoFn.OutputReceiver;
import org.apache.beam.sdk.transforms.ParDo;
import org.apache.beam.sdk.values.PCollection;
import org.slf4j.Logger;
Expand Down Expand Up @@ -68,9 +70,9 @@ public LogOutput(String prefix) {
}

@ProcessElement
public void processElement(ProcessContext c) throws Exception {
LOG.info("{}{}", prefix, c.element());
c.output(c.element());
public void processElement(@Element T element, OutputReceiver<T> receiver) throws Exception {
LOG.info("{}{}", prefix, element);
receiver.output(element);
}
}
}
8 changes: 5 additions & 3 deletions examples/java/src/main/java/org/apache/beam/examples/FlatMapElementsExample.java
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Expand Up @@ -24,6 +24,8 @@
import org.apache.beam.sdk.options.PipelineOptionsFactory;
import org.apache.beam.sdk.transforms.Create;
import org.apache.beam.sdk.transforms.DoFn;
import org.apache.beam.sdk.transforms.DoFn.Element;
import org.apache.beam.sdk.transforms.DoFn.OutputReceiver;
import org.apache.beam.sdk.transforms.FlatMapElements;
import org.apache.beam.sdk.transforms.InferableFunction;
import org.apache.beam.sdk.transforms.ParDo;
Expand Down Expand Up @@ -78,9 +80,9 @@ public LogOutput(String prefix) {
}

@ProcessElement
public void processElement(ProcessContext c) throws Exception {
LOG.info("{}{}", prefix, c.element());
c.output(c.element());
public void processElement(@Element T element, OutputReceiver<T> receiver) throws Exception {
LOG.info("{}{}", prefix, element);
receiver.output(element);
}
}
}
8 changes: 5 additions & 3 deletions examples/java/src/main/java/org/apache/beam/examples/GroupIntoBatchesExample.java
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Expand Up @@ -22,6 +22,8 @@
import org.apache.beam.sdk.options.PipelineOptionsFactory;
import org.apache.beam.sdk.transforms.Create;
import org.apache.beam.sdk.transforms.DoFn;
import org.apache.beam.sdk.transforms.DoFn.Element;
import org.apache.beam.sdk.transforms.DoFn.OutputReceiver;
import org.apache.beam.sdk.transforms.GroupIntoBatches;
import org.apache.beam.sdk.transforms.ParDo;
import org.apache.beam.sdk.values.KV;
Expand Down Expand Up @@ -74,9 +76,9 @@ public LogOutput(String prefix) {
}

@ProcessElement
public void processElement(ProcessContext c) throws Exception {
LOG.info("{}{}", prefix, c.element());
c.output(c.element());
public void processElement(@Element T element, OutputReceiver<T> receiver) throws Exception {
LOG.info("{}{}", prefix, element);
receiver.output(element);
}
}
}
19 changes: 12 additions & 7 deletions examples/java/src/main/java/org/apache/beam/examples/KafkaPassengerCountJson.java
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Expand Up @@ -55,6 +55,8 @@
import org.apache.beam.sdk.options.PipelineOptionsFactory;
import org.apache.beam.sdk.transforms.Combine;
import org.apache.beam.sdk.transforms.DoFn;
import org.apache.beam.sdk.transforms.DoFn.Element;
import org.apache.beam.sdk.transforms.DoFn.OutputReceiver;
import org.apache.beam.sdk.transforms.ParDo;
import org.apache.beam.sdk.transforms.Sum;
import org.apache.beam.sdk.transforms.Values;
Expand Down Expand Up @@ -109,10 +111,13 @@ public static void main(String[] args) {
ParDo.of(
new DoFn<String, KV<Integer, Integer>>() {
@ProcessElement
public void processElement(ProcessContext c) throws JsonProcessingException {
public void processElement(
@Element String element, OutputReceiver<KV<Integer, Integer>> receiver)
throws JsonProcessingException {
final VendorToPassengerDTO result =
om.readValue(c.element(), new TypeReference<VendorToPassengerDTO>() {});
c.output(KV.of(result.getVendorIdField(), result.getPassengerCountField()));
om.readValue(element, new TypeReference<VendorToPassengerDTO>() {});
receiver.output(
KV.of(result.getVendorIdField(), result.getPassengerCountField()));
}
}))
.apply(
Expand All @@ -124,11 +129,11 @@ public void processElement(ProcessContext c) throws JsonProcessingException {
new DoFn<KV<Integer, Integer>, KV<Integer, Integer>>() {
@ProcessElement
public void processElement(
ProcessContext c, OutputReceiver<KV<Integer, Integer>> out) {
OutputReceiver<KV<Integer, Integer>> out,
@Element KV<Integer, Integer> element) {
System.out.printf(
"Vendor: %s, Passengers: %s%n",
c.element().getKey(), c.element().getValue());
out.output(c.element());
"Vendor: %s, Passengers: %s%n", element.getKey(), element.getValue());
out.output(element);
}
}));
p.run().waitUntilFinish();
Expand Down
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