package com.esri.hadoop.hive;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hive.ql.exec.Description;
import org.apache.hadoop.io.BooleanWritable;
import org.apache.hadoop.io.BytesWritable;
import org.apache.hive.pdk.HivePdkUnitTest;
import org.apache.hive.pdk.HivePdkUnitTests;
import com.esri.core.geometry.ogc.OGCGeometry;
@Description(
name = "ST_Is3D",
value = "_FUNC_(geometry) - return true if the geometry object is three-dimensional",
extended = "Example:\n"
+ " > SELECT _FUNC_(ST_Polygon(1,1, 1,4, 4,4, 4,1)) FROM src LIMIT 1; -- false\n"
+ " > SELECT _FUNC_(ST_LineString(0.,0., 3.,4., 0.,4., 0.,0.)) FROM src LIMIT 1; -- false\n"
+ " > SELECT _FUNC_(ST_Point(3., 4.)) FROM src LIMIT 1; -- false\n"
+ " > SELECT _FUNC_(ST_PointZ(3., 4., 2)) FROM src LIMIT 1; -- true\n"
)
@HivePdkUnitTests(
cases = {
@HivePdkUnitTest(
query = "select ST_Is3D(ST_Point(0., 3.)) from onerow",
result = "false"
),
@HivePdkUnitTest(
query = "select ST_Is3D(ST_PointZ(0., 3., 1)) from onerow",
result = "true"
),
@HivePdkUnitTest(
query = "select ST_Is3D(ST_Point('pointzm (0. 3. 1. 2.)')) from onerow",
result = "true"
),
@HivePdkUnitTest(
query = "select ST_Is3D(null) from onerow",
result = "null"
)
}
)
public class ST_Is3D extends ST_GeometryAccessor {
public static final BooleanWritable resultBoolean = new BooleanWritable();
static final Log LOG = LogFactory.getLog(ST_Is3D.class.getName());
public BooleanWritable evaluate(BytesWritable geomref) {
if (geomref == null || geomref.getLength() == 0) {
LogUtils.Log_ArgumentsNull(LOG);
return null;
}
OGCGeometry ogcGeometry = GeometryUtils.geometryFromEsriShape(geomref);
if (ogcGeometry == null) {
LogUtils.Log_ArgumentsNull(LOG);
return null;
}
resultBoolean.set(ogcGeometry.is3D());
return resultBoolean;
}
}