chucheng92 commented on code in PR #3355: URL: https://github.com/apache/calcite/pull/3355#discussion_r1507004052
########## core/src/main/java/org/apache/calcite/sql/type/NullOperandTypeChecker.java: ########## @@ -0,0 +1,57 @@ +/* + * 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.type; + +import org.apache.calcite.sql.SqlCallBinding; +import org.apache.calcite.sql.SqlNode; +import org.apache.calcite.sql.SqlUtil; + +import static org.apache.calcite.util.Static.RESOURCE; + +/** + * Parameter type-checking strategy type must not be a NULL (including <code>NULL</code>, + * <code>CAST(NULL as ...)</code> but not <code>CAST(CAST(NULL as ...) AS ...)</code>). + */ +public class NullOperandTypeChecker extends SameOperandTypeChecker { + //~ Instance fields -------------------------------------------------------- + + private final boolean allowCast; + + //~ Constructors ----------------------------------------------------------- + + public NullOperandTypeChecker(final int nOperands, final boolean allowCast) { + super(nOperands); + this.allowCast = allowCast; + } + + //~ Methods ---------------------------------------------------------------- + + @Override public boolean checkOperandTypes(final SqlCallBinding callBinding, + final boolean throwOnFailure) { + // all operands can't be null Review Comment: yes, updated it. -- 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. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
