(sedona) branch master updated: [GH-1886] Create EnvelopeAccumulator class (#1885)

[jiayu]

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The following commit(s) were added to refs/heads/master by this push:
     new 05d8a36849 [GH-1886] Create EnvelopeAccumulator class (#1885)
05d8a36849 is described below

commit 05d8a3684950d1d2e91bba87a4c0cfca142999ce
Author: James Willis <james-wil...@users.noreply.github.com>
AuthorDate: Sun Mar 30 20:26:28 2025 -0700

    [GH-1886] Create EnvelopeAccumulator class (#1885)
    
    Co-authored-by: jameswillis <ja...@wherobots.com>
---
 .../core/monitoring/EnvelopeAccumulator.java       | 66 ++++++++++++++++++++++
 1 file changed, 66 insertions(+)

diff --git 
a/spark/common/src/main/java/org/apache/sedona/core/monitoring/EnvelopeAccumulator.java
 
b/spark/common/src/main/java/org/apache/sedona/core/monitoring/EnvelopeAccumulator.java
new file mode 100644
index 0000000000..408088653d
--- /dev/null
+++ 
b/spark/common/src/main/java/org/apache/sedona/core/monitoring/EnvelopeAccumulator.java
@@ -0,0 +1,66 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.sedona.core.monitoring;
+
+import org.apache.spark.util.AccumulatorV2;
+import org.locationtech.jts.geom.Envelope;
+import org.locationtech.jts.geom.Geometry;
+import org.locationtech.jts.geom.GeometryFactory;
+
+/**
+ * An accumulator that accumulates the envelope of geometries.
+ *
+ * <p>Useful to determine the spatial extent of data in the task and stage.
+ */
+public class EnvelopeAccumulator extends AccumulatorV2<Envelope, Geometry> {
+  private final GeometryFactory gf = new GeometryFactory();
+  private Envelope env = new Envelope();
+
+  @Override
+  public boolean isZero() {
+    return env.isNull();
+  }
+
+  @Override
+  public AccumulatorV2<Envelope, Geometry> copy() {
+    EnvelopeAccumulator newAcc = new EnvelopeAccumulator();
+    newAcc.env = new Envelope(this.env);
+    return newAcc;
+  }
+
+  @Override
+  public void reset() {
+    env = new Envelope();
+  }
+
+  @Override
+  public void add(Envelope v) {
+    env.expandToInclude(v);
+  }
+
+  @Override
+  public void merge(AccumulatorV2<Envelope, Geometry> other) {
+    env.expandToInclude(other.value().getEnvelopeInternal());
+  }
+
+  @Override
+  public Geometry value() {
+    return gf.toGeometry(env);
+  }
+}