This is an automated email from the ASF dual-hosted git repository.
twalthr pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/flink.git
commit d7d24425e47408eb094b7f5aa6ecfcffd7f89db7
Author: Timo Walther <twal...@apache.org>
AuthorDate: Tue May 21 14:42:02 2019 +0200
[hotfix][table-common] Add logical type check utilities
---
.../types/logical/utils/LogicalTypeChecks.java | 87 ++++++++++++++++++++++
1 file changed, 87 insertions(+)
diff --git
a/flink-table/flink-table-common/src/main/java/org/apache/flink/table/types/logical/utils/LogicalTypeChecks.java
b/flink-table/flink-table-common/src/main/java/org/apache/flink/table/types/logical/utils/LogicalTypeChecks.java
new file mode 100644
index 0000000..3958922
--- /dev/null
+++
b/flink-table/flink-table-common/src/main/java/org/apache/flink/table/types/logical/utils/LogicalTypeChecks.java
@@ -0,0 +1,87 @@
+/*
+ * 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.types.logical.utils;
+
+import org.apache.flink.annotation.Internal;
+import org.apache.flink.table.types.logical.LocalZonedTimestampType;
+import org.apache.flink.table.types.logical.LogicalType;
+import org.apache.flink.table.types.logical.LogicalTypeFamily;
+import org.apache.flink.table.types.logical.LogicalTypeRoot;
+import org.apache.flink.table.types.logical.TimestampKind;
+import org.apache.flink.table.types.logical.TimestampType;
+import org.apache.flink.table.types.logical.ZonedTimestampType;
+
+/**
+ * Utilities for checking {@link LogicalType}.
+ */
+@Internal
+public final class LogicalTypeChecks {
+
+ private static final TimeAttributeChecker TIME_ATTRIBUTE_CHECKER = new
TimeAttributeChecker();
+
+ public static boolean hasRoot(LogicalType logicalType, LogicalTypeRoot
typeRoot) {
+ return logicalType.getTypeRoot() == typeRoot;
+ }
+
+ public static boolean hasFamily(LogicalType logicalType,
LogicalTypeFamily family) {
+ return logicalType.getTypeRoot().getFamilies().contains(family);
+ }
+
+ public static boolean isTimeAttribute(LogicalType logicalType) {
+ return logicalType.accept(TIME_ATTRIBUTE_CHECKER) !=
TimestampKind.REGULAR;
+ }
+
+ public static boolean isRowtimeAttribute(LogicalType logicalType) {
+ return logicalType.accept(TIME_ATTRIBUTE_CHECKER) ==
TimestampKind.ROWTIME;
+ }
+
+ public static boolean isProctimeAttribute(LogicalType logicalType) {
+ return logicalType.accept(TIME_ATTRIBUTE_CHECKER) ==
TimestampKind.PROCTIME;
+ }
+
+ private LogicalTypeChecks() {
+ // no instantiation
+ }
+
+ //
--------------------------------------------------------------------------------------------
+
+ private static class TimeAttributeChecker extends
LogicalTypeDefaultVisitor<TimestampKind> {
+
+ @Override
+ public TimestampKind visit(TimestampType timestampType) {
+ return timestampType.getKind();
+ }
+
+ @Override
+ public TimestampKind visit(ZonedTimestampType
zonedTimestampType) {
+ return zonedTimestampType.getKind();
+ }
+
+ @Override
+ public TimestampKind visit(LocalZonedTimestampType
localZonedTimestampType) {
+ return localZonedTimestampType.getKind();
+ }
+
+ @Override
+ protected TimestampKind defaultMethod(LogicalType logicalType) {
+ // we don't verify that type is actually a timestamp
+ return TimestampKind.REGULAR;
+ }
+ }
+}
