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From GitBox <...@apache.org>
Subject [GitHub] [flink] JingsongLi commented on a change in pull request #10035: [FLINK-14080][table-planner-blink] Introduce DateTime as internal representation of TIMESTAMP_WITHOUT_TIME_ZONE
Date Fri, 01 Nov 2019 06:13:15 GMT
JingsongLi commented on a change in pull request #10035: [FLINK-14080][table-planner-blink]
Introduce DateTime as internal representation of TIMESTAMP_WITHOUT_TIME_ZONE
URL: https://github.com/apache/flink/pull/10035#discussion_r341461581
 
 

 ##########
 File path: flink-table/flink-table-runtime-blink/src/main/java/org/apache/flink/table/runtime/typeutils/DateTimeTypeInfo.java
 ##########
 @@ -0,0 +1,107 @@
+/*
+ * 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.flink.table.runtime.typeutils;
+
+import org.apache.flink.api.common.ExecutionConfig;
+import org.apache.flink.api.common.typeinfo.TypeInformation;
+import org.apache.flink.api.common.typeutils.TypeSerializer;
+import org.apache.flink.table.dataformat.DateTime;
+
+import java.util.Arrays;
+
+/**
+ * TypeInfomation of {@link DateTime}.
+ */
+public class DateTimeTypeInfo extends TypeInformation<DateTime> {
+
+	public static DateTimeTypeInfo of(int precision) {
+		return new DateTimeTypeInfo(precision);
+	}
+
+	private final int precision;
+
+	protected DateTimeTypeInfo(int precision) {
+		this.precision = precision;
+	}
+
+	@Override
+	public boolean isBasicType() {
+		return true;
+	}
+
+	@Override
+	public boolean isTupleType() {
+		return false;
+	}
+
+	@Override
+	public int getArity() {
+		return 1;
+	}
+
+	@Override
+	public int getTotalFields() {
+		return 1;
+	}
+
+	@Override
+	public Class<DateTime> getTypeClass() {
+		return DateTime.class;
+	}
+
+	@Override
+	public boolean isKeyType() {
+		return true;
+	}
+
+	@Override
+	public TypeSerializer<DateTime> createSerializer(ExecutionConfig config) {
+		return new DateTimeSerializer(precision);
+	}
+
+	@Override
+	public String toString() {
+		return String.format("DateTime(%d)", precision);
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (!(obj instanceof DateTimeTypeInfo)) {
+			return false;
+		}
+
+		DateTimeTypeInfo that = (DateTimeTypeInfo) obj;
+		return this.precision == that.precision;
+	}
+
+	@Override
+	public int hashCode() {
+		int h0 = this.getClass().getCanonicalName().hashCode();
+		return Arrays.hashCode(new int[]{h0, precision});
 
 Review comment:
   `Objects.hash`

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