| /* |
| * 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. |
| */ |
| /* |
| * Numeric round half to even |
| * Author : Xiaoyu Ma@UC Irvine |
| * 01/30/2012 |
| */ |
| package org.apache.asterix.om.typecomputer.impl; |
| |
| import org.apache.asterix.om.exceptions.TypeMismatchException; |
| import org.apache.asterix.om.typecomputer.base.AbstractResultTypeComputer; |
| import org.apache.asterix.om.types.ATypeTag; |
| import org.apache.asterix.om.types.IAType; |
| import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException; |
| import org.apache.hyracks.algebricks.core.algebra.base.ILogicalExpression; |
| import org.apache.hyracks.algebricks.core.algebra.functions.FunctionIdentifier; |
| import org.apache.hyracks.api.exceptions.SourceLocation; |
| |
| public class NumericRound2TypeComputer extends AbstractResultTypeComputer { |
| |
| public static final NumericRound2TypeComputer INSTANCE = new NumericRound2TypeComputer(); |
| |
| private NumericRound2TypeComputer() { |
| |
| } |
| |
| @Override |
| protected void checkArgType(FunctionIdentifier funcId, int argIndex, IAType type, SourceLocation sourceLoc) |
| throws AlgebricksException { |
| ATypeTag tag = type.getTypeTag(); |
| if (argIndex == 0) { |
| switch (tag) { |
| case TINYINT: |
| case SMALLINT: |
| case INTEGER: |
| case BIGINT: |
| case FLOAT: |
| case DOUBLE: |
| break; |
| default: |
| throw new TypeMismatchException(sourceLoc, funcId, argIndex, tag, ATypeTag.TINYINT, |
| ATypeTag.SMALLINT, ATypeTag.INTEGER, ATypeTag.BIGINT, ATypeTag.FLOAT, ATypeTag.DOUBLE); |
| } |
| } |
| if (argIndex == 1) { |
| switch (tag) { |
| case TINYINT: |
| case SMALLINT: |
| case INTEGER: |
| case BIGINT: |
| break; |
| default: |
| throw new TypeMismatchException(sourceLoc, funcId, argIndex, tag, ATypeTag.TINYINT, |
| ATypeTag.SMALLINT, ATypeTag.INTEGER, ATypeTag.BIGINT); |
| } |
| } |
| } |
| |
| @Override |
| protected IAType getResultType(ILogicalExpression expr, IAType... strippedInputTypes) throws AlgebricksException { |
| ATypeTag tag = strippedInputTypes[0].getTypeTag(); |
| switch (tag) { |
| case TINYINT: |
| case SMALLINT: |
| case INTEGER: |
| case BIGINT: |
| case FLOAT: |
| case DOUBLE: |
| case ANY: |
| return strippedInputTypes[0]; |
| default: |
| return null; |
| } |
| } |
| } |