| /* |
| * 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.calcite.sql.fun; |
| |
| import org.apache.calcite.sql.SqlCall; |
| import org.apache.calcite.sql.SqlKind; |
| import org.apache.calcite.sql.SqlNode; |
| import org.apache.calcite.sql.SqlPrefixOperator; |
| import org.apache.calcite.sql.validate.SqlValidator; |
| |
| /** |
| * SqlNewOperator represents an SQL <code>new specification</code> such as |
| * <code>NEW UDT(1, 2)</code>. When used in an SqlCall, SqlNewOperator takes a |
| * single operand, which is an invocation of the constructor method; but when |
| * used in a RexCall, the operands are the initial values to be used for the new |
| * instance. |
| */ |
| public class SqlNewOperator extends SqlPrefixOperator { |
| //~ Constructors ----------------------------------------------------------- |
| |
| public SqlNewOperator() { |
| super("NEW", SqlKind.NEW_SPECIFICATION, 0, null, null, null); |
| } |
| |
| //~ Methods ---------------------------------------------------------------- |
| |
| // override SqlOperator |
| @Override public SqlNode rewriteCall(SqlValidator validator, SqlCall call) { |
| // New specification is purely syntactic, so we rewrite it as a |
| // direct call to the constructor method. |
| return call.operand(0); |
| } |
| |
| // override SqlOperator |
| @Override public boolean requiresDecimalExpansion() { |
| return false; |
| } |
| } |