diff options
Diffstat (limited to 'contrib/udfs/src/main/java/org/apache/drill/exec/udfs/gis/STXMin.java')
-rw-r--r-- | contrib/udfs/src/main/java/org/apache/drill/exec/udfs/gis/STXMin.java | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/contrib/udfs/src/main/java/org/apache/drill/exec/udfs/gis/STXMin.java b/contrib/udfs/src/main/java/org/apache/drill/exec/udfs/gis/STXMin.java new file mode 100644 index 000000000..3119c8755 --- /dev/null +++ b/contrib/udfs/src/main/java/org/apache/drill/exec/udfs/gis/STXMin.java @@ -0,0 +1,61 @@ +/* + * 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.Float8Holder; +import org.apache.drill.exec.expr.holders.VarBinaryHolder; + +import javax.inject.Inject; + +/** + * Returns X minima of a bounding box 2d or 3d or a geometry + */ +@FunctionTemplate(name = "st_xmin", scope = FunctionTemplate.FunctionScope.SIMPLE, + nulls = FunctionTemplate.NullHandling.NULL_IF_NULL) +public class STXMin implements DrillSimpleFunc { + @Param + VarBinaryHolder geom1Param; + + @Output + Float8Holder out; + + @Inject + DrillBuf buffer; + + public void setup() { + } + + public void eval() { + com.esri.core.geometry.ogc.OGCGeometry geom1; + geom1 = com.esri.core.geometry.ogc.OGCGeometry + .fromBinary(geom1Param.buffer.nioBuffer(geom1Param.start, geom1Param.end - geom1Param.start)); + + if (geom1.geometryType().equals("Point")) { + out.value = ((com.esri.core.geometry.ogc.OGCPoint) geom1).X(); + } else { + com.esri.core.geometry.Envelope envelope = new com.esri.core.geometry.Envelope(); + geom1.getEsriGeometry().queryEnvelope(envelope); + out.value = envelope.getXMin(); + } + } +} |