[APIS-976] JDBC receives the oracle_compat_number_behavior system par…

…ameter and removes trailing zeros of double and float types. (#42)

http://jira.cubrid.org/browse/APIS-976

to eliminate user confusion, 2-way expression is unified with the oracle_compat_number_behavior system parameter.
in order for the broker to deliver the value of the system parameters including oracle_compat_number_behavior to the client, the broker extends the broker info that the client receives using the RESERVED field.
Change the CAS Protocol version from PROTOCOL_V11 to PROTOCOL_V12 to express the extension of the above protocol

src/jdbc/cubrid/jdbc/driver/ConnectionProperties.java

@@ -404,9 +404,6 @@ private int getDefaultConnectTimeout() {
     IntegerConnectionProperty preparedStmtCacheSqlLimit =
             new IntegerConnectionProperty("preparedStmtCacheSqlLimit", 256, 1, Integer.MAX_VALUE);
 
-    BooleanConnectionProperty oracleStyleNumberReturn =
-            new BooleanConnectionProperty("oracleStyleNumberReturn", false);
-
     public boolean getLogOnException() {
         return logOnException.getValueAsBoolean();
     }
@@ -494,8 +491,4 @@ public int getPrepStmtCacheSize() {
     public int getPrepStmtCacheSqlLimit() {
         return preparedStmtCacheSqlLimit.getValueAsInteger();
     }
-
-    public boolean getOracleStyleNumberReturn() {
-        return oracleStyleNumberReturn.getValueAsBoolean();
-    }
 }

src/jdbc/cubrid/jdbc/jci/UConnection.java

@@ -100,16 +100,19 @@ public abstract class UConnection {
     public static final int PROTOCOL_V9 = 9;
 
     public static final int PROTOCOL_V11 = 11;
+    public static final int PROTOCOL_V12 = 12;
 
     /* Current protocol version */
-    protected static final byte CAS_PROTOCOL_VERSION = PROTOCOL_V11;
+    protected static final byte CAS_PROTOCOL_VERSION = PROTOCOL_V12;
     protected static final byte CAS_PROTO_INDICATOR = 0x40;
     protected static final byte CAS_PROTO_VER_MASK = 0x3F;
     protected static final byte CAS_RENEWED_ERROR_CODE = (byte) 0x80;
     protected static final byte CAS_SUPPORT_HOLDABLE_RESULT = (byte) 0x40;
     /* Do not remove and rename CAS_RECONNECT_WHEN_SERVER_DOWN */
     protected static final byte CAS_RECONNECT_WHEN_SERVER_DOWN = (byte) 0x20;
 
+    protected static final byte CAS_ORACLE_COMPAT_NUMBER_BEHAVIOR = (byte) 0x01;
+
     @SuppressWarnings("unused")
     private static final byte GET_COLLECTION_VALUE = 1,
             GET_SIZE_OF_COLLECTION = 2,
@@ -159,13 +162,13 @@ public abstract class UConnection {
     protected static final int BROKER_INFO_CCI_PCONNECT = 3;
     protected static final int BROKER_INFO_PROTO_VERSION = 4;
     protected static final int BROKER_INFO_FUNCTION_FLAG = 5;
-    protected static final int BROKER_INFO_RESERVED2 = 6;
+    protected static final int BROKER_INFO_SYSTEM_PARAM = 6;
     protected static final int BROKER_INFO_RESERVED3 = 7;
 
     /* For backward compatibility */
     protected static final int BROKER_INFO_MAJOR_VERSION = BROKER_INFO_PROTO_VERSION;
     protected static final int BROKER_INFO_MINOR_VERSION = BROKER_INFO_FUNCTION_FLAG;
-    protected static final int BROKER_INFO_PATCH_VERSION = BROKER_INFO_RESERVED2;
+    protected static final int BROKER_INFO_PATCH_VERSION = BROKER_INFO_SYSTEM_PARAM;
 
     public static final String ZERO_DATETIME_BEHAVIOR_CONVERT_TO_NULL = "convertToNull";
     public static final String ZERO_DATETIME_BEHAVIOR_EXCEPTION = "exception";
@@ -1513,10 +1516,6 @@ public boolean isPrepStmtCache(String sql) {
         return isCacheable;
     }
 
-    public boolean getOracleStyleNumberReturn() {
-        return connectionProperties.getOracleStyleNumberReturn();
-    }
-
     public void setCasIp(String casIp) {
         this.casIp = casIp;
     }
@@ -1713,6 +1712,16 @@ public boolean supportHoldableResult() {
         return false;
     }
 
+    public boolean isOracleCompatNumberBehavior() {
+        if (protoVersionIsAbove(PROTOCOL_V12)) {
+            if (brokerInfo == null) return false;
+            return (brokerInfo[BROKER_INFO_SYSTEM_PARAM] & CAS_ORACLE_COMPAT_NUMBER_BEHAVIOR)
+                    == CAS_ORACLE_COMPAT_NUMBER_BEHAVIOR;
+        } else {
+            return false;
+        }
+    }
+
     public void setCUBRIDConnection(CUBRIDConnection con) {
         cubridcon = con;
         lastIsolationLevel = CUBRIDIsolationLevel.TRAN_UNKNOWN_ISOLATION;

src/jdbc/cubrid/jdbc/jci/UStatement.java

@@ -1510,10 +1510,11 @@ else if (obj instanceof Timestamp) {
                 } catch (Exception e) {
                     retValue = null;
                 }
-            } else if (relatedConnection.getOracleStyleNumberReturn() && (obj instanceof Double)) {
+            } else if (relatedConnection.isOracleCompatNumberBehavior()
+                    && (obj instanceof Double)) {
                 String numString = obj.toString();
                 retValue = new BigDecimal(numString).stripTrailingZeros().toPlainString();
-            } else if (relatedConnection.getOracleStyleNumberReturn() && (obj instanceof Float)) {
+            } else if (relatedConnection.isOracleCompatNumberBehavior() && (obj instanceof Float)) {
                 String numString = obj.toString();
                 retValue = new BigDecimal(numString).stripTrailingZeros().toPlainString();
             } else retValue = obj;
@@ -1584,10 +1585,10 @@ public synchronized String getString(int index) {
         if (obj == null) return null;
 
         try {
-            if (relatedConnection.getOracleStyleNumberReturn() && (obj instanceof Double)) {
+            if (relatedConnection.isOracleCompatNumberBehavior() && (obj instanceof Double)) {
                 numString = obj.toString();
                 return new BigDecimal(numString).stripTrailingZeros().toPlainString();
-            } else if (relatedConnection.getOracleStyleNumberReturn() && (obj instanceof Float)) {
+            } else if (relatedConnection.isOracleCompatNumberBehavior() && (obj instanceof Float)) {
                 numString = obj.toString();
                 return new BigDecimal(numString).stripTrailingZeros().toPlainString();
             } else {