vvysotskyi commented on a change in pull request #1763: DRILL-6974: Add possibility to view option value via SET command URL: https://github.com/apache/drill/pull/1763#discussion_r277785713
########## File path: exec/java-exec/src/main/java/org/apache/drill/exec/planner/sql/parser/DrillSqlSetOption.java ########## @@ -0,0 +1,114 @@ +/* + * 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.planner.sql.parser; + +import java.util.ArrayList; +import java.util.List; + +import org.apache.calcite.sql.SqlCall; +import org.apache.calcite.sql.SqlIdentifier; +import org.apache.calcite.sql.SqlKind; +import org.apache.calcite.sql.SqlLiteral; +import org.apache.calcite.sql.SqlNode; +import org.apache.calcite.sql.SqlOperator; +import org.apache.calcite.sql.SqlSetOption; +import org.apache.calcite.sql.SqlSpecialOperator; +import org.apache.calcite.sql.SqlWriter; +import org.apache.calcite.sql.parser.SqlParserPos; +import org.apache.calcite.util.ImmutableNullableList; +import org.apache.drill.exec.planner.sql.handlers.SetOptionHandler; + +/** + * Sql parse tree node to represent statement: {@code SET <NAME> [ = VALUE ]}. + * Statement handled in: {@link SetOptionHandler} + */ +public final class DrillSqlSetOption extends SqlSetOption { + + public static final SqlSpecialOperator OPERATOR = new SqlSpecialOperator("SET_OPTION", SqlKind.SET_OPTION) { + @Override + public SqlCall createCall(SqlLiteral functionQualifier, SqlParserPos pos, SqlNode... operands) { + SqlNode scopeNode = operands[0]; + String scope = scopeNode == null ? null : scopeNode.toString(); + return new DrillSqlSetOption(pos, scope, (SqlIdentifier) operands[1], operands[2]); + } + }; + + public DrillSqlSetOption(SqlParserPos pos, String scope, SqlIdentifier name, SqlNode value) { + super(pos, scope, name, value); + } + + @Override + public SqlKind getKind() { + return SqlKind.SET_OPTION; + } + + @Override + public SqlOperator getOperator() { + return OPERATOR; + } + + @Override + public List<SqlNode> getOperandList() { + List<SqlNode> operandList = new ArrayList<>(); + if (this.getScope() == null) { + operandList.add(null); + } else { + operandList.add(new SqlIdentifier(this.getScope(), SqlParserPos.ZERO)); + } + + operandList.add(this.getName()); + operandList.add(this.getValue()); + return ImmutableNullableList.copyOf(operandList); + } + + @Override + public void setOperand(int i, SqlNode operand) { Review comment: Are there any differences in logic between this method and method from the parent class `SqlSetOption`? ---------------------------------------------------------------- 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: us...@infra.apache.org With regards, Apache Git Services
