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 com.esri.core.geometry.ogc.OGCGeometry;
@Description(
name = "ST_Touches",
value = "_FUNC_(geometry1, geometry2) - return true if geometry1 touches geometry2",
extended = "Example:\n" +
"SELECT _FUNC_(st_point(1, 2), st_polygon(1, 1, 1, 4, 4, 4, 4, 1)) from src LIMIT 1; -- return true\n" +
"SELECT _FUNC_(st_point(8, 8), st_polygon(1, 1, 1, 4, 4, 4, 4, 1)) from src LIMIT 1; -- return false"
)
public class ST_Touches extends ST_GeometryRelational {
static final Log LOG = LogFactory.getLog(ST_Touches.class.getName());
public static final BooleanWritable resultBoolean = new BooleanWritable();
public BooleanWritable evaluate(BytesWritable geometryref1, BytesWritable geometryref2)
{
if (geometryref1 == null || geometryref2 == null ||
geometryref1.getLength() == 0 || geometryref2.getLength() == 0) {
LogUtils.Log_ArgumentsNull(LOG);
return null;
}
if (!GeometryUtils.compareSpatialReferences(geometryref1, geometryref2)) {
LogUtils.Log_SRIDMismatch(LOG, geometryref1, geometryref2);
return null;
}
OGCGeometry ogcGeom1 = GeometryUtils.geometryFromEsriShape(geometryref1);
OGCGeometry ogcGeom2 = GeometryUtils.geometryFromEsriShape(geometryref2);
if (ogcGeom1 == null || ogcGeom2 == null){
LogUtils.Log_ArgumentsNull(LOG);
return null;
}
resultBoolean.set(ogcGeom1.touches(ogcGeom2));
return resultBoolean;
}
}