| /* |
| * 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.expr.fn.impl; |
| |
| import javax.inject.Inject; |
| |
| import org.apache.drill.common.types.TypeProtos.MinorType; |
| import org.apache.drill.exec.expr.DrillSimpleFunc; |
| import org.apache.drill.exec.expr.annotations.FunctionTemplate; |
| import org.apache.drill.exec.expr.annotations.FunctionTemplate.NullHandling; |
| 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.IntHolder; |
| import org.apache.drill.exec.expr.holders.UnionHolder; |
| import org.apache.drill.exec.expr.holders.VarCharHolder; |
| import org.apache.drill.exec.resolver.TypeCastRules; |
| import org.apache.drill.exec.vector.complex.reader.FieldReader; |
| |
| import io.netty.buffer.DrillBuf; |
| |
| /** |
| * Contains additional functions for union types in addition to those in |
| * GUnionFunctions |
| */ |
| public class UnionFunctions { |
| |
| /** |
| * Returns zero if the inputs have equivalent types. Two numeric types are |
| * considered equivalent, as are a combination of date/timestamp. If not |
| * equivalent, returns a value determined by the numeric value of the |
| * MinorType enum |
| */ |
| @FunctionTemplate(names = {"compareType"}, |
| scope = FunctionTemplate.FunctionScope.SIMPLE, |
| nulls = NullHandling.INTERNAL) |
| public static class CompareType implements DrillSimpleFunc { |
| |
| @Param |
| FieldReader input1; |
| @Param |
| FieldReader input2; |
| @Output |
| IntHolder out; |
| |
| @Override |
| public void setup() {} |
| |
| @Override |
| public void eval() { |
| org.apache.drill.common.types.TypeProtos.MinorType type1; |
| if (input1.isSet()) { |
| type1 = input1.getType().getMinorType(); |
| } else { |
| type1 = org.apache.drill.common.types.TypeProtos.MinorType.NULL; |
| } |
| org.apache.drill.common.types.TypeProtos.MinorType type2; |
| if (input2.isSet()) { |
| type2 = input2.getType().getMinorType(); |
| } else { |
| type2 = org.apache.drill.common.types.TypeProtos.MinorType.NULL; |
| } |
| |
| out.value = org.apache.drill.exec.expr.fn.impl.UnionFunctions.compareTypes(type1, type2); |
| } |
| } |
| |
| public static int compareTypes(MinorType type1, MinorType type2) { |
| int typeValue1 = getTypeValue(type1); |
| int typeValue2 = getTypeValue(type2); |
| return typeValue1 - typeValue2; |
| } |
| |
| /** |
| * Gives a type ordering modeled after the behavior of MongoDB Numeric types |
| * are first, followed by string types, followed by binary, then boolean, then |
| * date, then timestamp Any other times will be sorted after that |
| */ |
| private static int getTypeValue(MinorType type) { |
| if (TypeCastRules.isNumericType(type)) { |
| return 0; |
| } |
| switch (type) { |
| case TINYINT: |
| case SMALLINT: |
| case INT: |
| case BIGINT: |
| case UINT1: |
| case UINT2: |
| case UINT4: |
| case UINT8: |
| case DECIMAL9: |
| case DECIMAL18: |
| case DECIMAL28SPARSE: |
| case DECIMAL38SPARSE: |
| case VARDECIMAL: |
| case FLOAT4: |
| case FLOAT8: |
| return 0; |
| case VARCHAR: |
| case VAR16CHAR: |
| return 1; |
| case VARBINARY: |
| return 2; |
| case BIT: |
| return 3; |
| case DATE: |
| return 4; |
| case TIMESTAMP: |
| return 5; |
| default: |
| return 6 + type.getNumber(); |
| } |
| } |
| |
| @FunctionTemplate(names = {"typeOf"}, |
| scope = FunctionTemplate.FunctionScope.SIMPLE, |
| nulls = NullHandling.INTERNAL) |
| public static class GetType implements DrillSimpleFunc { |
| |
| @Param |
| FieldReader input; |
| @Output |
| VarCharHolder out; |
| @Inject |
| DrillBuf buf; |
| |
| @Override |
| public void setup() {} |
| |
| @Override |
| public void eval() { |
| String typeName = input.getTypeString(); |
| byte[] type = typeName.getBytes(java.nio.charset.StandardCharsets.UTF_8); |
| buf = buf.reallocIfNeeded(type.length); |
| buf.setBytes(0, type); |
| out.buffer = buf; |
| out.start = 0; |
| out.end = type.length; |
| } |
| } |
| |
| @FunctionTemplate(names = {"castUNION", "castToUnion"}, |
| scope = FunctionTemplate.FunctionScope.SIMPLE, nulls=NullHandling.NULL_IF_NULL) |
| public static class CastUnionToUnion implements DrillSimpleFunc{ |
| |
| @Param FieldReader in; |
| @Output |
| UnionHolder out; |
| |
| @Override |
| public void setup() {} |
| |
| @Override |
| public void eval() { |
| out.reader = in; |
| out.isSet = in.isSet() ? 1 : 0; |
| } |
| } |
| |
| @FunctionTemplate(name = "ASSERT_LIST", scope = FunctionTemplate.FunctionScope.SIMPLE, |
| nulls=NullHandling.INTERNAL) |
| public static class CastUnionList implements DrillSimpleFunc { |
| |
| @Param UnionHolder in; |
| @Output UnionHolder out; |
| |
| @Override |
| public void setup() {} |
| |
| @Override |
| public void eval() { |
| if (in.isSet == 1) { |
| if (in.reader.getType().getMinorType() != org.apache.drill.common.types.TypeProtos.MinorType.LIST) { |
| throw new UnsupportedOperationException("The input is not a LIST type"); |
| } |
| out.reader = in.reader; |
| } else { |
| out.isSet = 0; |
| } |
| } |
| } |
| |
| @FunctionTemplate(name = "IS_LIST", scope = FunctionTemplate.FunctionScope.SIMPLE, |
| nulls=NullHandling.INTERNAL) |
| public static class UnionIsList implements DrillSimpleFunc { |
| |
| @Param UnionHolder in; |
| @Output BitHolder out; |
| |
| @Override |
| public void setup() {} |
| |
| @Override |
| public void eval() { |
| if (in.isSet == 1) { |
| out.value = in.getType().getMinorType() == org.apache.drill.common.types.TypeProtos.MinorType.LIST ? 1 : 0; |
| } else { |
| out.value = 0; |
| } |
| } |
| } |
| |
| @FunctionTemplate(name = "ASSERT_MAP", scope = FunctionTemplate.FunctionScope.SIMPLE, |
| nulls=NullHandling.INTERNAL) |
| public static class CastUnionMap implements DrillSimpleFunc { |
| |
| @Param UnionHolder in; |
| @Output UnionHolder out; |
| |
| @Override |
| public void setup() {} |
| |
| @Override |
| public void eval() { |
| if (in.isSet == 1) { |
| if (in.reader.getType().getMinorType() != org.apache.drill.common.types.TypeProtos.MinorType.MAP) { |
| throw new UnsupportedOperationException("The input is not a MAP type"); |
| } |
| out.reader = in.reader; |
| } else { |
| out.isSet = 0; |
| } |
| } |
| } |
| |
| @FunctionTemplate(names = {"IS_MAP", "IS_STRUCT"}, |
| scope = FunctionTemplate.FunctionScope.SIMPLE, nulls=NullHandling.INTERNAL) |
| public static class UnionIsMap implements DrillSimpleFunc { |
| |
| @Param UnionHolder in; |
| @Output BitHolder out; |
| |
| @Override |
| public void setup() {} |
| |
| @Override |
| public void eval() { |
| if (in.isSet == 1) { |
| out.value = in.getType().getMinorType() == org.apache.drill.common.types.TypeProtos.MinorType.MAP ? 1 : 0; |
| } else { |
| out.value = 0; |
| } |
| } |
| } |
| |
| @FunctionTemplate(names = {"isnotnull", "is not null"}, |
| scope = FunctionTemplate.FunctionScope.SIMPLE, nulls = FunctionTemplate.NullHandling.INTERNAL) |
| public static class IsNotNull implements DrillSimpleFunc { |
| |
| @Param UnionHolder input; |
| @Output BitHolder out; |
| |
| @Override |
| public void setup() { } |
| |
| @Override |
| public void eval() { |
| out.value = input.isSet == 1 ? 1 : 0; |
| } |
| } |
| |
| @FunctionTemplate(names = {"isnull", "is null"}, |
| scope = FunctionTemplate.FunctionScope.SIMPLE, |
| nulls = FunctionTemplate.NullHandling.INTERNAL) |
| public static class IsNull implements DrillSimpleFunc { |
| |
| @Param UnionHolder input; |
| @Output BitHolder out; |
| |
| @Override |
| public void setup() { } |
| |
| @Override |
| public void eval() { |
| out.value = input.isSet == 1 ? 0 : 1; |
| } |
| } |
| } |