| /* |
| * 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. |
| */ |
| <@pp.dropOutputFile /> |
| |
| |
| |
| <#list aggrtypes4.aggrtypes as aggrtype> |
| <@pp.changeOutputFile name="/org/apache/drill/exec/expr/fn/impl/gaggr/${aggrtype.className}Functions.java" /> |
| |
| <#include "/@includes/license.ftl" /> |
| |
| /* |
| * This class is generated using freemarker and the ${.template_name} template. |
| */ |
| |
| <#-- A utility class that is used to generate java code for median functions --> |
| |
| package org.apache.drill.exec.expr.fn.impl.gaggr; |
| |
| import org.apache.drill.exec.expr.DrillAggFunc; |
| import org.apache.drill.exec.expr.annotations.FunctionTemplate; |
| import org.apache.drill.exec.expr.annotations.FunctionTemplate.NullHandling; |
| import org.apache.drill.exec.expr.annotations.FunctionTemplate.FunctionScope; |
| import org.apache.drill.exec.expr.annotations.Output; |
| import org.apache.drill.exec.expr.annotations.Param; |
| import org.apache.drill.exec.expr.annotations.Workspace; |
| import org.apache.drill.exec.expr.holders.*; |
| import org.apache.drill.exec.expr.fn.impl.StreamingMedianHelpers.StreamingMedianHelper; |
| import org.apache.drill.exec.expr.fn.impl.StreamingMedianHelpers.StreamingIntMedianHelper; |
| import org.apache.drill.exec.expr.fn.impl.StreamingMedianHelpers.StreamingDoubleMedianHelper; |
| |
| @SuppressWarnings("unused") |
| |
| public class ${aggrtype.className}Functions { |
| static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(${aggrtype.className}Functions.class); |
| |
| <#list aggrtype.types as type> |
| |
| <#if aggrtype.aliasName == ""> |
| @FunctionTemplate(name = "${aggrtype.funcName}", scope = FunctionTemplate.FunctionScope.POINT_AGGREGATE) |
| <#else> |
| @FunctionTemplate(names = {"${aggrtype.funcName}", "${aggrtype.aliasName}"}, scope = FunctionTemplate.FunctionScope.POINT_AGGREGATE) |
| </#if> |
| |
| public static class ${type.inputType}${aggrtype.className} implements DrillAggFunc { |
| |
| @Param ${type.inputType}Holder input; |
| @Output ${type.outputType}Holder median; |
| @Workspace ObjectHolder utils; |
| |
| public void setup() { |
| // Initialize the ObjectHolder |
| utils = new ObjectHolder(); |
| utils.obj = new org.apache.drill.exec.expr.fn.impl.StreamingMedianHelpers.${type.medianHelper}(); |
| } |
| |
| @Override |
| public void add() { |
| org.apache.drill.exec.expr.fn.impl.StreamingMedianHelpers.${type.medianHelper} medianHelper = (org.apache.drill.exec.expr.fn.impl.StreamingMedianHelpers.${type.medianHelper}) utils.obj; |
| <#if type.inputType?starts_with("Nullable")> |
| sout: { |
| if (input.isSet == 0) { |
| // processing nullable input and the value is null, so don't do anything... |
| break sout; |
| } |
| </#if> |
| medianHelper.addNextNumber(input.value); |
| |
| <#if type.inputType?starts_with("Nullable")> |
| } // end of sout block |
| </#if> |
| } |
| |
| @Override |
| public void output() { |
| org.apache.drill.exec.expr.fn.impl.StreamingMedianHelpers.${type.medianHelper} medianHelper = (org.apache.drill.exec.expr.fn.impl.StreamingMedianHelpers.${type.medianHelper}) utils.obj; |
| median.value = medianHelper.getMedian(); |
| median.isSet = 1; |
| } |
| |
| @Override |
| public void reset() { |
| org.apache.drill.exec.expr.fn.impl.StreamingMedianHelpers.StreamingMedianHelper medianHelper = (org.apache.drill.exec.expr.fn.impl.StreamingMedianHelpers.${type.medianHelper}) utils.obj; |
| medianHelper.reset(); |
| } |
| } |
| |
| |
| </#list> |
| } |
| </#list> |