1 files changed, 62 insertions, 0 deletions
diff --git a/contrib/udfs/src/main/java/org/apache/drill/exec/udfs/gis/STEquals.java b/contrib/udfs/src/main/java/org/apache/drill/exec/udfs/gis/STEquals.java
new file mode 100644
index 000000000..81895a855
--- /dev/null
+++ b/contrib/udfs/src/main/java/org/apache/drill/exec/udfs/gis/STEquals.java
@@ -0,0 +1,62 @@
+/*
+ * 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.drill.exec.udfs.gis;
+
+import io.netty.buffer.DrillBuf;
+import org.apache.drill.exec.expr.DrillSimpleFunc;
+import org.apache.drill.exec.expr.annotations.FunctionTemplate;
+import org.apache.drill.exec.expr.annotations.Output;
+import org.apache.drill.exec.expr.annotations.Param;
+import org.apache.drill.exec.expr.holders.BitHolder;
+import org.apache.drill.exec.expr.holders.VarBinaryHolder;
+
+import javax.inject.Inject;
+
+/**
+ * Returns true if the given geometries represent the same geometry. Directionality is ignored
+ */
+@FunctionTemplate(name = "st_equals", scope = FunctionTemplate.FunctionScope.SIMPLE,
+  nulls = FunctionTemplate.NullHandling.NULL_IF_NULL)
+public class STEquals implements DrillSimpleFunc {
+  @Param
+  VarBinaryHolder geom1Param;
+
+  @Param
+  VarBinaryHolder geom2Param;
+
+  @Output
+  BitHolder out;
+
+  @Inject
+  DrillBuf buffer;
+
+  public void setup() {
+  }
+
+  public void eval() {
+    com.esri.core.geometry.ogc.OGCGeometry geom1;
+    com.esri.core.geometry.ogc.OGCGeometry geom2;
+
+    geom1 = com.esri.core.geometry.ogc.OGCGeometry
+        .fromBinary(geom1Param.buffer.nioBuffer(geom1Param.start, geom1Param.end - geom1Param.start));
+    geom2 = com.esri.core.geometry.ogc.OGCGeometry
+        .fromBinary(geom2Param.buffer.nioBuffer(geom2Param.start, geom2Param.end - geom2Param.start));
+
+    out.value = geom1.Equals(geom2) ? 1 : 0;
+  }
+}