| /* |
| * 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. |
| */ |
| import org.apache.drill.exec.expr.annotations.Workspace; |
| |
| <@pp.dropOutputFile /> |
| |
| |
| |
| <#list decimalaggrtypes2.aggrtypes as aggrtype> |
| <@pp.changeOutputFile name="/org/apache/drill/exec/expr/fn/impl/gaggr/Decimal${aggrtype.className}Functions.java" /> |
| |
| <#include "/@includes/license.ftl" /> |
| |
| <#-- A utility class that is used to generate java code for aggr functions for decimal data type that maintain a single --> |
| <#-- running counter to hold the result. This includes: AVG. --> |
| |
| /* |
| * This class is automatically generated from AggrTypeFunctions1.tdd using FreeMarker. |
| */ |
| |
| package org.apache.drill.exec.expr.fn.impl.gaggr; |
| |
| <#include "/@includes/vv_imports.ftl" /> |
| |
| import org.apache.drill.exec.expr.DrillAggFunc; |
| import org.apache.drill.exec.expr.annotations.FunctionTemplate; |
| 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 javax.inject.Inject; |
| import io.netty.buffer.DrillBuf; |
| import org.apache.drill.exec.record.RecordBatch; |
| import io.netty.buffer.ByteBuf; |
| |
| /* |
| * This class is generated using freemarker and the ${.template_name} template. |
| */ |
| |
| @SuppressWarnings("unused") |
| |
| public class Decimal${aggrtype.className}Functions { |
| <#list aggrtype.types as type> |
| |
| @FunctionTemplate(name = "${aggrtype.funcName}", |
| scope = FunctionTemplate.FunctionScope.POINT_AGGREGATE, |
| returnType = FunctionTemplate.ReturnType.DECIMAL_AVG_AGGREGATE) |
| public static class ${type.inputType}${aggrtype.className} implements DrillAggFunc { |
| |
| @Param ${type.inputType}Holder in; |
| @Inject DrillBuf buffer; |
| @Workspace ObjectHolder value; |
| @Workspace ${type.countRunningType}Holder count; |
| @Workspace IntHolder outputScale; |
| @Output ${type.outputType}Holder out; |
| |
| public void setup() { |
| value = new ObjectHolder(); |
| value.obj = java.math.BigDecimal.ZERO; |
| count = new ${type.countRunningType}Holder(); |
| count.value = 0; |
| outputScale = new IntHolder(); |
| outputScale.value = Integer.MIN_VALUE; |
| } |
| |
| @Override |
| public void add() { |
| <#if type.inputType?starts_with("Nullable")> |
| sout: { |
| if (in.isSet == 0) { |
| // processing nullable input and the value is null, so don't do anything... |
| break sout; |
| } |
| </#if> |
| count.value++; |
| java.math.BigDecimal currentValue = org.apache.drill.exec.util.DecimalUtility |
| .getBigDecimalFromDrillBuf(in.buffer, in.start, in.end - in.start, in.scale); |
| value.obj = ((java.math.BigDecimal)(value.obj)).add(currentValue); |
| if (outputScale.value == Integer.MIN_VALUE) { |
| outputScale.value = in.scale; |
| } |
| <#if type.inputType?starts_with("Nullable")> |
| } // end of sout block |
| </#if> |
| } |
| |
| @Override |
| public void output() { |
| if (count.value > 0) { |
| out.isSet = 1; |
| out.start = 0; |
| out.scale = Math.max(outputScale.value, 6); |
| java.math.BigDecimal average = ((java.math.BigDecimal) value.obj) |
| .divide(java.math.BigDecimal.valueOf(count.value), out.scale, java.math.BigDecimal.ROUND_HALF_UP); |
| out.precision = org.apache.drill.exec.planner.types.DrillRelDataTypeSystem.DRILL_REL_DATATYPE_SYSTEM.getMaxNumericPrecision(); |
| byte[] bytes = average.unscaledValue().toByteArray(); |
| int len = bytes.length; |
| out.buffer = buffer = buffer.reallocIfNeeded(len); |
| out.buffer.setBytes(0, bytes); |
| out.end = len; |
| } else { |
| out.isSet = 0; |
| } |
| } |
| |
| @Override |
| public void reset() { |
| value = new ObjectHolder(); |
| value.obj = java.math.BigDecimal.ZERO; |
| count = new ${type.countRunningType}Holder(); |
| count.value = 0; |
| outputScale = new IntHolder(); |
| outputScale.value = Integer.MIN_VALUE; |
| } |
| } |
| |
| </#list> |
| } |
| </#list> |
| |