jiayuasu commented on code in PR #910:
URL: https://github.com/apache/sedona/pull/910#discussion_r1268817929
##########
docs/api/flink/Function.md:
##########
@@ -1087,6 +1087,20 @@ Example:
SELECT ST_IsClosed(ST_GeomFromText('LINESTRING(0 0, 1 1, 1 0)'))
```
+## ST_IsCollection
+
+Introduction: Returns `TRUE` if the argument type is a geometry collection
type.
+
+Format: `ST_IsCollection(geom: geometry)`
+
+Since: `v1.5.0`
+
+Example:
+
+```sql
Review Comment:
Please provide two examples of the output. One is `true` and another one is
`false`
##########
docs/api/sql/Function.md:
##########
@@ -1082,6 +1082,20 @@ SELECT ST_IsClosed(ST_GeomFromText('LINESTRING(0 0, 1 1,
1 0)'))
Output: `false`
+## ST_IsCollection
+
+Introduction: Returns `TRUE` if the argument type is a geometry collection
type.
+
+Format: `ST_IsCollection(geom: geometry)`
+
+Since: `v1.5.0`
+
+Example:
+
+```sql
+SELECT ST_IsCollection(ST_GeomFromText('MULTIPOINT(0 0), (6 6)'))
Review Comment:
Same here
##########
sql/common/src/main/scala/org/apache/spark/sql/sedona_sql/expressions/st_functions.scala:
##########
@@ -384,5 +384,9 @@ object st_functions extends DataFrameAPI {
def ST_CoordDim(geometry: String): Column =
wrapExpression[ST_CoordDim](geometry)
+ def ST_IsCollection(geometry: Column): Column =
wrapExpression[ST_IsCollection](geometry)
Review Comment:
Spark DataFrame style API is not tested. Please add test cases.
##########
common/src/main/java/org/apache/sedona/common/Functions.java:
##########
@@ -988,6 +988,14 @@ public static double frechetDistance(Geometry g1, Geometry
g2) {
return GeomUtils.getFrechetDistance(g1, g2);
}
+ public static boolean isCollection(Geometry geometry) {
+ String geoType = geometry.getGeometryType();
Review Comment:
Please implement test cases in Sedona common
##########
flink/src/main/java/org/apache/sedona/flink/expressions/Functions.java:
##########
@@ -13,6 +13,7 @@
*/
package org.apache.sedona.flink.expressions;
+import org.apache.calcite.interpreter.Scalar;
Review Comment:
Why is the calcite class introduced here?
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