FrankChen021 commented on a change in pull request #10635: URL: https://github.com/apache/druid/pull/10635#discussion_r537243778
########## File path: sql/src/main/java/org/apache/druid/sql/calcite/expression/builtin/SizeFormatOperatorConversion.java ########## @@ -0,0 +1,117 @@ +/* + * 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.druid.sql.calcite.expression.builtin; + +import org.apache.calcite.rel.type.RelDataType; +import org.apache.calcite.rex.RexNode; +import org.apache.calcite.sql.SqlCallBinding; +import org.apache.calcite.sql.SqlFunction; +import org.apache.calcite.sql.SqlFunctionCategory; +import org.apache.calcite.sql.SqlOperandCountRange; +import org.apache.calcite.sql.SqlOperator; +import org.apache.calcite.sql.type.SqlOperandCountRanges; +import org.apache.calcite.sql.type.SqlOperandTypeChecker; +import org.apache.calcite.sql.type.SqlTypeName; +import org.apache.druid.java.util.common.StringUtils; +import org.apache.druid.segment.column.RowSignature; +import org.apache.druid.sql.calcite.expression.DruidExpression; +import org.apache.druid.sql.calcite.expression.OperatorConversions; +import org.apache.druid.sql.calcite.expression.SqlOperatorConversion; +import org.apache.druid.sql.calcite.planner.PlannerContext; + +public class SizeFormatOperatorConversion implements SqlOperatorConversion +{ + public static final SqlOperatorConversion BINARY_BYTE_FORMAT = new SizeFormatOperatorConversion("binary_byte_format"); + public static final SqlOperatorConversion DECIMAL_BYTE_FORMAT = new SizeFormatOperatorConversion("decimal_byte_format"); + public static final SqlOperatorConversion DECIMAL_FORMAT = new SizeFormatOperatorConversion("decimal_format"); + + private final String name; + private final SqlFunction sqlFunction; + + private SizeFormatOperatorConversion(String name) + { + this.sqlFunction = OperatorConversions + .operatorBuilder(StringUtils.toUpperCase(name)) + .operandTypeChecker(new StringFormatOperandTypeChecker()) + .functionCategory(SqlFunctionCategory.STRING) + .returnTypeNonNull(SqlTypeName.VARCHAR) + .build(); + + this.name = name; + } + + @Override + public SqlOperator calciteOperator() + { + return sqlFunction; + } + + @Override + public DruidExpression toDruidExpression( + final PlannerContext plannerContext, + final RowSignature rowSignature, + final RexNode rexNode + ) + { + return OperatorConversions.convertCall(plannerContext, rowSignature, rexNode, name); + } + + private static class StringFormatOperandTypeChecker implements SqlOperandTypeChecker + { + @Override + public boolean checkOperandTypes(SqlCallBinding callBinding, boolean throwOnFailure) + { + final RelDataType firstArgType = callBinding.getOperandType(0); Review comment: Fixed ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
