AJ-550: add the default value of pool connections

Author: lucaijun

src/com/xxdb/SimpleDBConnectionPool.java

@@ -137,20 +137,20 @@ boolean isClosed() {
 
     }
 
-    public class PoolEntry extends DBConnection {
+    class PoolEntry extends DBConnection {
         AtomicBoolean inUse = new AtomicBoolean(false);
         String connectionName;
 
-        public PoolEntry(boolean useSSL, boolean compress, boolean usePython, String connectionName) {
+        PoolEntry(boolean useSSL, boolean compress, boolean usePython, String connectionName) {
             super(false, useSSL, compress, usePython);
             this.connectionName = connectionName;
         }
 
-        public String getConnectionName() {
+        String getConnectionName() {
             return connectionName;
         }
 
-        public boolean isIdle() {
+        boolean isIdle() {
             return !this.inUse.get();
         }
 

src/com/xxdb/SimpleDBConnectionPoolConfig.java

@@ -2,6 +2,7 @@
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+
 import java.util.Objects;
 
 public class SimpleDBConnectionPoolConfig {
@@ -138,8 +139,10 @@ public void validate() {
         password = getNullIfEmpty(password);
         if (Objects.isNull(password))
             log.warn("Logging in needs password.");
-        if (initialPoolSize <= 0)
-            throw new RuntimeException("The number of connection pools should be positive.");
+        if (initialPoolSize <= 0) {
+            initialPoolSize = 5;
+            log.warn("The number of connection pools is invalid, use the default value 5.");
+        }
     }
 
     private static String getNullIfEmpty(String text) {