[to #348] Add javadoc (#447)

Signed-off-by: Peng Guanwen <pg999w@outlook.com>

.github/workflows/gh-pages.yml

@@ -21,6 +21,15 @@ jobs:
 
       - run: mdbook build ./docs
 
+      - name: Set up JDK 8
+        uses: actions/setup-java@v2
+        with:
+          java-version: '8'
+          distribution: 'adopt'
+
+      - name: Javadoc
+        run: mvn clean javadoc:javadoc -Djavadoc.skip=false && mv ./target/site/apidocs ./docs/book/apidocs
+
       - name: Deploy
         uses: peaceiris/actions-gh-pages@v3
         if: ${{ github.ref == 'refs/heads/master' }}

.gitignore

@@ -74,3 +74,6 @@ out/
 
 # vscode
 .settings
+
+# mdbook
+docs/book

README.md

@@ -50,9 +50,11 @@ Find more demo in [KVRawClientTest](https://github.com/birdstorm/KVRawClientTest
 
 See [Java Client Documents](/docs/README.md) for references about how to config and monitor Java Client.
 
+An [API reference](https://tikv.github.io/client-java/apidocs) is also available.
+
 ## Community
 
-See [Contribution Guide](/docs/dev-guide.md) for references about how to contribute to this project.
+See [Contribution Guide](https://tikv.github.io/client-java/contribution/introduction.html) for references about how to contribute to this project.
 
 ## License
 

src/main/java/org/tikv/common/expression/visitor/PartAndFilterExprRewriter.java

@@ -26,9 +26,9 @@ import org.tikv.common.predicates.PredicateUtils;
  * PartAndFilterExprRewriter takes partition expression as an input. Rewriting rule is based on the
  * type of partition expression. 1. If partition expression is a columnRef, no rewriting will be
  * performed. 2. If partition expression is year and the expression to be rewritten in the form of y
- * < '1995-10-10' then its right hand child will be replaced with "1995". 3. If partition expression
- * is year and the expression to be rewritten in the form of year(y) < '1995' then its left hand
- * child will be replaced with y.
+ * &lt; '1995-10-10' then its right hand child will be replaced with "1995". 3. If partition
+ * expression is year and the expression to be rewritten in the form of year(y) &lt; '1995' then its
+ * left hand child will be replaced with y.
  */
 public class PartAndFilterExprRewriter extends DefaultVisitor<Expression, Void> {
   private final Expression partExpr;

src/main/java/org/tikv/common/importer/ImporterStoreClient.java

@@ -106,8 +106,6 @@ public class ImporterStoreClient<RequestClass, ResponseClass>
   /**
    * Ingest KV pairs to RawKV/Txn using gRPC streaming mode. This API should be called on both
    * leader and followers.
-   *
-   * @return
    */
   public void startWrite() {
     if (conf.isRawKVMode()) {

src/main/java/org/tikv/common/types/DataType.java

@@ -368,19 +368,19 @@ public abstract class DataType implements Serializable {
   /**
    * Convert from Spark SQL Supported Java Type to TiDB Type
    *
-   * <p>1. data convert, e.g. Integer -> SHORT
+   * <p>1. data convert, e.g. Integer -&gt; SHORT
    *
    * <p>2. check overflow, e.g. write 1000 to short
    *
    * <p>Spark SQL only support following types:
    *
-   * <p>1. BooleanType -> java.lang.Boolean 2. ByteType -> java.lang.Byte 3. ShortType ->
+   * <p>{@literal 1. BooleanType -> java.lang.Boolean 2. ByteType -> java.lang.Byte 3. ShortType ->
    * java.lang.Short 4. IntegerType -> java.lang.Integer 5. LongType -> java.lang.Long 6. FloatType
    * -> java.lang.Float 7. DoubleType -> java.lang.Double 8. StringType -> String 9. DecimalType ->
    * java.math.BigDecimal 10. DateType -> java.sql.Date 11. TimestampType -> java.sql.Timestamp 12.
    * BinaryType -> byte array 13. ArrayType -> scala.collection.Seq (use getList for java.util.List)
    * 14. MapType -> scala.collection.Map (use getJavaMap for java.util.Map) 15. StructType ->
-   * org.apache.spark.sql.Row
+   * org.apache.spark.sql.Row }
    *
    * @param value
    * @return

src/main/java/org/tikv/common/util/RangeSplitter.java

@@ -49,7 +49,7 @@ public class RangeSplitter {
    *
    * @param tableId Table id used for the handle
    * @param handles Handle list
-   * @return <Region, HandleList> map
+   * @return {@code <Region, HandleList>} map
    */
   public Map<Pair<TiRegion, TiStore>, TLongArrayList> groupByAndSortHandlesByRegionId(
       long tableId, TLongArrayList handles) {

src/main/java/org/tikv/txn/TwoPhaseCommitter.java

@@ -140,7 +140,6 @@ public class TwoPhaseCommitter {
    * @param backOffer
    * @param primaryKey
    * @param value
-   * @return
    */
   public void prewritePrimaryKey(BackOffer backOffer, byte[] primaryKey, byte[] value)
       throws TiBatchWriteException {
@@ -196,7 +195,6 @@ public class TwoPhaseCommitter {
    *
    * @param backOffer
    * @param key
-   * @return
    */
   public void commitPrimaryKey(BackOffer backOffer, byte[] key, long commitTs)
       throws TiBatchWriteException {
@@ -236,7 +234,6 @@ public class TwoPhaseCommitter {
    *
    * @param primaryKey
    * @param pairs
-   * @return
    */
   public void prewriteSecondaryKeys(
       byte[] primaryKey, Iterator<BytePairWrapper> pairs, int maxBackOfferMS)
@@ -499,7 +496,6 @@ public class TwoPhaseCommitter {
    *
    * @param keys
    * @param commitTs
-   * @return
    */
   public void commitSecondaryKeys(
       Iterator<org.tikv.common.ByteWrapper> keys, long commitTs, int commitBackOfferMS)

src/main/java/org/tikv/txn/TxnStatus.java

@@ -19,13 +19,11 @@ package org.tikv.txn;
 
 import org.tikv.kvproto.Kvrpcpb;
 
-/**
- * ttl > 0: lock is not resolved
- *
- * <p>ttl = 0 && commitTS = 0: lock is deleted
- *
- * <p>ttl = 0 && commitTS > 0: lock is committed
- */
+// ttl > 0: lock is not resolved
+//
+// <p>ttl = 0 && commitTS = 0: lock is deleted
+//
+// <p>ttl = 0 && commitTS > 0: lock is committed
 public class TxnStatus {
   private long ttl;
   private long commitTS;