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/*
* 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 supplied geometries have some, but not all, interior points in common
*/
@FunctionTemplate(name = "st_crosses", scope = FunctionTemplate.FunctionScope.SIMPLE,
nulls = FunctionTemplate.NullHandling.NULL_IF_NULL)
public class STCrosses 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.crosses(geom2) ? 1 : 0;
}
}
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