optimize: support oracle date types

rm-datasource/src/main/java/io/seata/rm/datasource/exec/oracle/OracleJdbcType.java

@@ -0,0 +1,26 @@
+/*
+ *  Copyright 1999-2019 Seata.io Group.
+ *
+ *  Licensed 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 io.seata.rm.datasource.exec.oracle;
+
+/**
+ * @author doubleDimple lovele.cn@gmail.com
+ */
+public class OracleJdbcType {
+
+    public static final int TIMESTAMP_WITH_TIME_ZONE = -101;
+
+    public static final int TIMESTAMP_WITH_LOCAL_TIME_ZONE = -102;
+}

rm-datasource/src/main/java/io/seata/rm/datasource/sql/struct/TableRecords.java

@@ -35,6 +35,10 @@
 import javax.sql.rowset.serial.SerialRef;
 import io.seata.common.exception.ShouldNeverHappenException;
 import io.seata.rm.datasource.sql.serial.SerialArray;
+import static io.seata.rm.datasource.exec.oracle.OracleJdbcType.TIMESTAMP_WITH_LOCAL_TIME_ZONE;
+import static io.seata.rm.datasource.exec.oracle.OracleJdbcType.TIMESTAMP_WITH_TIME_ZONE;
+import static io.seata.rm.datasource.util.OffsetTimeUtils.convertOffSetTime;
+import static io.seata.rm.datasource.util.OffsetTimeUtils.timeToOffsetDateTime;
 
 /**
  * The type Table records.
@@ -237,6 +241,8 @@ public static TableRecords buildRecords(TableMeta tmeta, ResultSet resultSet) th
                     if (object != null) {
                         field.setValue(new SerialJavaObject(object));
                     }
+                } else if (dataType == TIMESTAMP_WITH_TIME_ZONE || dataType == TIMESTAMP_WITH_LOCAL_TIME_ZONE) {
+                    field.setValue(convertOffSetTime(timeToOffsetDateTime(resultSet.getBytes(i))));
                 } else {
                     // JDBCType.DISTINCT, JDBCType.STRUCT etc...
                     field.setValue(holdSerialDataType(resultSet.getObject(i)));

rm-datasource/src/main/java/io/seata/rm/datasource/util/OffsetTimeUtils.java

@@ -0,0 +1,115 @@
+/*
+ *  Copyright 1999-2019 Seata.io Group.
+ *
+ *  Licensed 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 io.seata.rm.datasource.util;
+
+import java.time.LocalDateTime;
+import java.time.OffsetDateTime;
+import java.time.ZoneId;
+import java.time.ZoneOffset;
+import java.time.format.DateTimeFormatter;
+import java.util.HashMap;
+import java.util.Map;
+
+import static java.lang.Short.toUnsignedInt;
+import static java.time.ZoneOffset.UTC;
+
+/**
+ * @author doubleDimple
+ */
+public class OffsetTimeUtils {
+
+    public static final String PATTERN_1 = "yyyy-MM-dd HH:mm:ss.SSS";
+
+    public static final String PATTERN_2 = "yyyy-MM-dd HH:mm:ss";
+
+    private static final byte REGIONIDBIT = (byte)0b1000_0000;
+
+    private static Map<Integer, String> ZONE_ID_MAP = new HashMap<>(2);
+
+    public static String getRegion(int code) {
+        return ZONE_ID_MAP.get(code);
+    }
+
+    public static String convertOffSetTime(OffsetDateTime offsetDateTime) {
+        if (null != offsetDateTime) {
+            return offsetDateTime.format(DateTimeFormatter.ofPattern(PATTERN_1));
+        }
+        return null;
+    }
+
+    public static OffsetDateTime timeToOffsetDateTime(byte[] bytes) {
+        if (null == bytes || bytes.length == 0) {
+            return null;
+        }
+
+        OffsetDateTime utc = extractUtc(bytes);
+        if (bytes.length >= 8) {
+            if (isFixedOffset(bytes)) {
+                ZoneOffset offset = extractOffset(bytes);
+                return utc.withOffsetSameInstant(offset);
+            } else {
+                ZoneId zoneId = extractZoneId(bytes);
+                return utc.atZoneSameInstant(zoneId).toOffsetDateTime();
+            }
+        }
+        return utc.atZoneSameInstant(ZoneId.systemDefault()).toOffsetDateTime();
+    }
+
+    private static boolean isFixedOffset(byte[] bytes) {
+        return (bytes[11] & REGIONIDBIT) == 0;
+    }
+
+    private static OffsetDateTime extractUtc(byte[] bytes) {
+        return OffsetDateTime.of(extractLocalDateTime(bytes), UTC);
+    }
+
+    private static ZoneId extractZoneId(byte[] bytes) {
+        // high order bits
+        int regionCode = (bytes[11] & 0b1111111) << 6;
+        // low order bits
+        regionCode += (bytes[12] & 0b11111100) >> 2;
+        String regionName = getRegion(regionCode);
+        return ZoneId.of(regionName);
+    }
+
+    private static ZoneOffset extractOffset(byte[] bytes) {
+        int hours = bytes[11] - 20;
+        int minutes = bytes[12] - 60;
+        if ((hours == 0) && (minutes == 0)) {
+            return ZoneOffset.UTC;
+        }
+        return ZoneOffset.ofHoursMinutes(hours, minutes);
+    }
+
+    private static LocalDateTime extractLocalDateTime(byte[] bytes) {
+        int year = ((toUnsignedInt(bytes[0]) - 100) * 100) + (toUnsignedInt(bytes[1]) - 100);
+        int month = bytes[2];
+        int dayOfMonth = bytes[3];
+        int hour = bytes[4] - 1;
+        int minute = bytes[5] - 1;
+        int second = bytes[6] - 1;
+        int nanoOfSecond = 0;
+        if (bytes.length >= 8) {
+            nanoOfSecond = (toUnsignedInt(bytes[7]) << 24) | (toUnsignedInt(bytes[8]) << 16)
+                | (toUnsignedInt(bytes[9]) << 8) | toUnsignedInt(bytes[10]);
+        }
+        return LocalDateTime.of(year, month, dayOfMonth, hour, minute, second, nanoOfSecond);
+    }
+
+    static {
+        ZONE_ID_MAP.put(250, "Asia/Shanghai");
+    }
+}