Replace TConnection with TClientImpl in JDBC

Replace obsolete TarantoolConnection with TarantoolClient to have an
ability to perform async operations.

Update SQLDriver URL parameters. Add init and operation timeouts.
Remove socket timeout and replace socket provider with socket channel
provider options (according to TarantoolConnection-to-TarantoolClient
transfer written above).

Add operation timeout capability to TarantoolClientImpl. It also affects
the cluster client which no more needs its own expirable operations.

Add basic support for SQLStatement (setQueryTimeout) to execute requests
with timeout using new TarantoolClient operation timeout.

Remove deprecated JDBCBridge. SQLConnection accepted the responsibility
for producing raw SQL results.

Update README doc with respect to JDBC driver options changes.

Closes: #163
Follows on: #75, #155

Author: nicktorwald

README.md

@@ -63,7 +63,7 @@ Remember that `TarantoolClient` adopts a
 when a client is not connected.
 
 The `TarantoolClient` will stop functioning if your implementation of a socket
-channel provider raises an exception or returns a null. You will need a new
+channel provider raises an exception. You will need a new
 instance of client to recover. Hence, you should only throw in case you have
 met unrecoverable error.
 
@@ -120,13 +120,22 @@ Feel free to override any method of `TarantoolClientImpl`. For example, to hook
 all the results, you could override this:
 
 ```java
-protected void complete(long code, CompletableFuture<?> q);
+protected void complete(TarantoolPacket packet, TarantoolOp<?> future);
 ```
 
 ## Spring NamedParameterJdbcTemplate usage example
 
-To configure sockets you should implements SQLSocketProvider and add socketProvider=abc.xyz.MySocketProvider to connect url.
-For example tarantool://localhost:3301?user=test&password=test&socketProvider=abc.xyz.MySocketProvider
+The JDBC driver uses `TarantoolClient` implementation to provide a communication with server.
+To configure socket channel provider you should implements SocketChannelProvider and add
+`socketChannelProvider=abc.xyz.MySocketChannelProvider` to connect url.
+
+For example:
+
+```
+tarantool://localhost:3301?user=test&password=test&socketProvider=abc.xyz.MySocketProvider
+```
+
+Here is an example how you can use the driver covered by Spring `DriverManagerDataSource`:
 
 ```java
 NamedParameterJdbcTemplate template = new NamedParameterJdbcTemplate(new DriverManagerDataSource("tarantool://localhost:3301?user=test&password=test"));

src/main/java/org/tarantool/JDBCBridge.java

@@ -9,10 +9,10 @@
 
 public abstract class SqlProtoUtils {
     public static List<Map<String, Object>> readSqlResult(TarantoolPacket pack) {
-        List<List<?>> data = (List<List<?>>) pack.getBody().get(Key.DATA.getId());
+        List<List<Object>> data = getSQLData(pack);
+        List<SQLMetaData> metaData = getSQLMetadata(pack);
 
         List<Map<String, Object>> values = new ArrayList<>(data.size());
-        List<SQLMetaData> metaData = getSQLMetadata(pack);
         for (List row : data) {
             LinkedHashMap<String, Object> value = new LinkedHashMap<>();
             for (int i = 0; i < row.size(); i++) {

src/main/java/org/tarantool/SqlProtoUtils.java

@@ -11,10 +11,6 @@
 
 public abstract class TarantoolBase<Result> extends AbstractTarantoolOps<Integer, List<?>, Object, Result> {
     protected String serverVersion;
-
-    /**
-     * Connection state.
-     */
     protected MsgPackLite msgPackLite = MsgPackLite.INSTANCE;
     protected AtomicLong syncId = new AtomicLong();
     protected int initialRequestSize = 4096;
@@ -25,7 +21,7 @@ public TarantoolBase() {
     public TarantoolBase(String username, String password, Socket socket) {
         super();
         try {
-            TarantoolGreeting greeting = ProtoUtils.connect(socket, username, password);
+            TarantoolGreeting greeting = ProtoUtils.connect(socket, username, password, msgPackLite);
             this.serverVersion = greeting.getServerVersion();
         } catch (IOException e) {
             throw new CommunicationException("Couldn't connect to tarantool", e);

src/main/java/org/tarantool/TarantoolBase.java

@@ -23,6 +23,8 @@ public interface TarantoolClient {
 
     boolean isAlive();
 
+    boolean isClosed();
+
     void waitAlive() throws InterruptedException;
 
     boolean waitAlive(long timeout, TimeUnit unit) throws InterruptedException;

src/main/java/org/tarantool/TarantoolClient.java

@@ -2,6 +2,8 @@
 
 public class TarantoolClientConfig {
 
+    public static final int DEFAULT_OPERATION_EXPIRY_TIME_MILLIS = 1000;
+
     /**
      * Auth-related data.
      */
@@ -48,4 +50,9 @@ public class TarantoolClientConfig {
     public long initTimeoutMillis = 60 * 1000L;
     public long writeTimeoutMillis = 60 * 1000L;
 
+    /**
+     * Operation expiration period.
+     */
+    public int operationExpiryTimeMillis = DEFAULT_OPERATION_EXPIRY_TIME_MILLIS;
+
 }