Github user hsuanyi commented on a diff in the pull request:
https://github.com/apache/drill/pull/377#discussion_r53756134
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/planner/sql/TypeInferenceUtils.java
---
@@ -0,0 +1,196 @@
+/**
+ * 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;
+
+import com.google.common.collect.Lists;
+import com.google.common.collect.Sets;
+import org.apache.calcite.avatica.util.TimeUnit;
+import org.apache.calcite.rel.type.RelDataType;
+import org.apache.calcite.rel.type.RelDataTypeFactory;
+import org.apache.calcite.sql.SqlIntervalQualifier;
+import org.apache.calcite.sql.SqlOperatorBinding;
+import org.apache.calcite.sql.parser.SqlParserPos;
+import org.apache.calcite.sql.type.SqlTypeName;
+import org.apache.drill.common.expression.DumbLogicalExpression;
+import org.apache.drill.common.expression.ExpressionPosition;
+import org.apache.drill.common.expression.FunctionCall;
+import org.apache.drill.common.expression.LogicalExpression;
+import org.apache.drill.common.types.TypeProtos;
+import org.apache.drill.common.types.Types;
+import org.apache.drill.exec.expr.fn.DrillFuncHolder;
+import org.apache.drill.exec.planner.logical.DrillConstExecutor;
+import org.apache.drill.exec.resolver.FunctionResolver;
+import org.apache.drill.exec.resolver.FunctionResolverFactory;
+
+import java.util.List;
+import java.util.Set;
+
+public class TypeInferenceUtils {
+ public static final TypeProtos.MajorType NONE =
TypeProtos.MajorType.getDefaultInstance();
+ public static final int MAX_VARCHAR_LENGTH = 65535;
+
+ private static final Set<String> setFnWithDynamicTypes =
Sets.newHashSet();
--- End diff --
I removed this set and used a new approach. You can take a look at this
class again.
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