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.hive.ql.exec.UDFArgumentException;
import org.apache.hadoop.hive.serde2.io.DoubleWritable;
import org.apache.hadoop.io.BytesWritable;
import org.apache.hadoop.io.Text;
import org.apache.hive.pdk.HivePdkUnitTest;
import org.apache.hive.pdk.HivePdkUnitTests;
import com.esri.core.geometry.Point;
import com.esri.core.geometry.ogc.OGCGeometry;
@Description(
name = "ST_Point",
value = "_FUNC_(x, y) - constructor for 2D point\n" +
"_FUNC_('point (x y)') - constructor for 2D point",
extended = "Example:\n" +
" SELECT _FUNC_(longitude, latitude) from src LIMIT 1;\n" +
" SELECT _FUNC_('point (0 0)') from src LIMIT 1;")
@HivePdkUnitTests(
cases = {
@HivePdkUnitTest(
query = "select ST_GeometryType(ST_Point('point (10.02 20.01)')) from onerow",
result = "ST_POINT"
),
@HivePdkUnitTest(
query = "select ST_Equals(ST_Point('point (10.02 20.01)'), ST_GeomFromText('point (10.02 20.01)')) from onerow",
result = "true"
)
}
)
class ST_Point extends ST_Geometry {
static final Log LOG = LogFactory.getLog(ST_Point.class.getName());
// Number-pair constructor - 2D
public BytesWritable evaluate(DoubleWritable x, DoubleWritable y) {
return evaluate(x, y, null, null);
}
// Number-triplet constructor - 3D
public BytesWritable evaluate(DoubleWritable x, DoubleWritable y, DoubleWritable z) {
return evaluate(x, y, z, null);
}
// Number-list constructor - ZM
public BytesWritable evaluate(DoubleWritable x, DoubleWritable y, DoubleWritable z, DoubleWritable m) {
if (x == null || y == null) {
LogUtils.Log_ArgumentsNull(LOG);
return null;
}
try {
Point stPt = new Point(x.get(), y.get());
if (z != null)
stPt.setZ(z.get());
if (m != null)
stPt.setM(m.get());
return GeometryUtils.geometryToEsriShapeBytesWritable(OGCGeometry.createFromEsriGeometry(stPt, null));
} catch (Exception e) {
LogUtils.Log_InternalError(LOG, "ST_Point: " + e);
return null;
}
}
// WKT constructor - can use SetSRID on constructed point
public BytesWritable evaluate(Text wkwrap) throws UDFArgumentException {
String wkt = wkwrap.toString();
try {
OGCGeometry ogcObj = OGCGeometry.fromText(wkt);
ogcObj.setSpatialReference(null);
if (ogcObj.geometryType().equals("Point")) {
return GeometryUtils.geometryToEsriShapeBytesWritable(ogcObj);
} else {
LogUtils.Log_InvalidType(LOG, GeometryUtils.OGCType.ST_POINT, GeometryUtils.OGCType.UNKNOWN);
return null;
}
} catch (Exception e) { // IllegalArgumentException, GeometryException
LogUtils.Log_InvalidText(LOG, wkt);
return null;
}
}
}