- Fix MDEV-15429 CONNECT engine JDBC handling Postgresql UUID type

  Also handle Postgresql sending type VARCHAR for TEXT column and
  setting length to b x7FFFFFF when the length is unknown.
  modified:   storage/connect/Client.java
  modified:   storage/connect/JavaWrappers.jar
  modified:   storage/connect/JdbcInterface.java
  modified:   storage/connect/PostgresqlInterface.java
  modified:   storage/connect/global.h
  modified:   storage/connect/ha_connect.cc
  modified:   storage/connect/jdbconn.cpp
  modified:   storage/connect/jdbconn.h
  modified:   storage/connect/mysql-test/connect/r/jdbc_postgresql.result
  modified:   storage/connect/mysql-test/connect/t/jdbc_postgresql.test
  modified:   storage/connect/mysql-test/connect/t/jdbconn.inc
  modified:   storage/connect/plgdbsem.h
  modified:   storage/connect/tabjdbc.cpp
  modified:   storage/connect/tabjdbc.h
  added:      storage/connect/mysql-test/connect/std_data/JavaWrappers.jar

storage/connect/Client.java

+
 package wrappers;
 
 import java.io.BufferedReader;
 import java.io.Console;
 import java.io.IOException;
 import java.io.InputStreamReader;
+import java.sql.Date;
+import java.sql.Time;
+import java.sql.Timestamp;
 
 public class Client {
     static boolean    	 DEBUG = true;
@@ -58,6 +62,9 @@ public class Client {
 		  String query;
 		  System.out.println("Successfully connected to " + parms[1]);
 		  
+		  s = jdi.GetQuoteString();
+		  System.out.println("Qstr = '" + s + "'");
+		  
 		  while ((query = getLine("Query: ", false)) != null) {
 		    n = jdi.Execute(query);
 		    System.out.println("Returned n = " + n);
@@ -79,7 +86,11 @@ public class Client {
 	private static void PrintResult(int ncol) {
     	// Get result set meta data
     	int i;
+    	Date date = new Date(0);
+    	Time time = new Time(0);
+    	Timestamp tsp = new Timestamp(0);
     	String columnName;
+		Object job;
 
     	// Get the column names; column indices start from 1
     	for (i = 1; i <= ncol; i++) {
@@ -112,6 +123,7 @@ public class Client {
 	    		case java.sql.Types.VARCHAR:
 	    		case java.sql.Types.LONGVARCHAR:
 	    		case java.sql.Types.CHAR:
+				case 1111:
 			    	System.out.print(jdi.StringField(i, null));
 	    			break;
 	    		case java.sql.Types.INTEGER:
@@ -120,14 +132,17 @@ public class Client {
 	    		case java.sql.Types.BIGINT:
 			    	System.out.print(jdi.BigintField(i, null));
 	    			break;
-	    		case java.sql.Types.TIMESTAMP:
-			    	System.out.print(jdi.TimestampField(i, null));
-	    			break;
 	    		case java.sql.Types.TIME:
-			    	System.out.print(jdi.TimeField(i, null));
+	    			time.setTime((long)jdi.TimeField(i, null) * 1000);
+			    	System.out.print(time);
 	    			break;
 	    		case java.sql.Types.DATE:
-			    	System.out.print(jdi.DateField(i, null));
+	    			date.setTime((long)jdi.DateField(i, null) * 1000);
+			    	System.out.print(date);
+	    			break;
+	    		case java.sql.Types.TIMESTAMP:
+	    			tsp.setTime((long)jdi.TimestampField(i, null) * 1000);
+			    	System.out.print(tsp);
 	    			break;
 	    		case java.sql.Types.SMALLINT:
 			    	System.out.print(jdi.IntField(i, null));
@@ -141,6 +156,8 @@ public class Client {
 	    		case java.sql.Types.BOOLEAN:
 	    			System.out.print(jdi.BooleanField(i, null));
 	    		default:
+					job = jdi.ObjectField(i, null);
+					System.out.print(job.toString());
 	    			break;
 	    		} // endswitch Type
 	    		

storage/connect/JdbcInterface.java

 package wrappers;
 
-import java.math.*;
-import java.sql.*;
+import java.math.BigDecimal;
+import java.sql.Connection;
+import java.sql.DatabaseMetaData;
+import java.sql.Date;
+import java.sql.Driver;
+import java.sql.DriverManager;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.ResultSetMetaData;
+import java.sql.SQLException;
+import java.sql.Statement;
+import java.sql.Time;
+import java.sql.Timestamp;
 import java.util.Collections;
 import java.util.Hashtable;
 import java.util.List;
+import java.util.UUID;
 
 import javax.sql.DataSource;
 
@@ -223,6 +235,24 @@ public class JdbcInterface {
     	
     } // end of SetTimestampParm
     
+	public void SetUuidParm(int i, String s) {
+		try {
+			UUID uuid;
+
+			if (s == null)
+				uuid = null;
+			else if (s.isEmpty())
+				uuid = UUID.randomUUID();
+			else
+				uuid = UUID.fromString(s);
+
+			pstmt.setObject(i, uuid);
+		} catch (Exception e) {
+			SetErrmsg(e);
+		} // end try/catch
+
+	} // end of SetUuidParm
+
     public int SetNullParm(int i, int typ) {
     	int rc = 0;
     	
@@ -481,6 +511,8 @@ public class JdbcInterface {
 		System.out.println("Executing query '" + query + "'");
     	
       try {
+			if (rs != null)
+				rs.close();
     	rs = stmt.executeQuery(query);
 		rsmd = rs.getMetaData();
     	ncol = rsmd.getColumnCount();
@@ -708,7 +740,7 @@ public class JdbcInterface {
 	  return 0;  
 	} // end of TimestampField
     
-    public Object ObjectField(int n, String name) {
+  public Object ObjectField(int n, String name) {
 	  if (rs == null) {
 		System.out.println("No result set");
 	  } else try {
@@ -720,6 +752,22 @@ public class JdbcInterface {
 	  return null;  
 	} // end of ObjectField
 	    
+	public String UuidField(int n, String name) {
+		Object job;
+
+		if (rs == null) {
+			System.out.println("No result set");
+		} else
+			try {
+				job = (n > 0) ? rs.getObject(n) : rs.getObject(name);
+				return job.toString();
+			} catch (SQLException se) {
+				SetErrmsg(se);
+			} // end try/catch
+
+		return null;
+	} // end of UuidField
+
     public int GetDrivers(String[] s, int mxs) {
     	int n = 0;
     	List<Driver> drivers = Collections.list(DriverManager.getDrivers());

storage/connect/PostgresqlInterface.java

 package wrappers;
 
-import java.sql.*;
+import java.sql.SQLException;
 import java.util.Hashtable;
 
 import javax.sql.DataSource;
+
 import org.postgresql.jdbc2.optional.PoolingDataSource;
 
 public class PostgresqlInterface extends JdbcInterface {
@@ -19,7 +20,7 @@ public class PostgresqlInterface extends JdbcInterface {
     	
 	} // end of constructor
 
-    @Override
+	@Override
 	public int JdbcConnect(String[] parms, int fsize, boolean scrollable) {
 	      int               rc = 0;
 	      String            url = parms[1];

storage/connect/global.h

@@ -220,7 +220,6 @@ DllExport BOOL    PlugIsAbsolutePath(LPCSTR path);
 DllExport bool    AllocSarea(PGLOBAL, uint);
 DllExport void    FreeSarea(PGLOBAL);
 DllExport BOOL    PlugSubSet(PGLOBAL, void *, uint);
-					void   *PlugSubAlloc(PGLOBAL, void *, size_t);	 // Does throw
 DllExport char   *PlugDup(PGLOBAL g, const char *str);
 DllExport void   *MakePtr(void *, OFFSET);
 DllExport void    htrc(char const *fmt, ...);
@@ -231,4 +230,9 @@ DllExport uint    GetTraceValue(void);
 } // extern "C"
 #endif
 
+/***********************************************************************/
+/*  Non exported routine declarations.                                 */
+/***********************************************************************/
+void *PlugSubAlloc(PGLOBAL, void *, size_t);	 // Does throw
+
 /*-------------------------- End of Global.H --------------------------*/

storage/connect/ha_connect.cc

@@ -174,9 +174,9 @@
 #define JSONMAX      10             // JSON Default max grp size
 
 extern "C" {
-       char version[]= "Version 1.06.0006 February 02, 2018";
+       char version[]= "Version 1.06.0007 March 11, 2018";
 #if defined(__WIN__)
-       char compver[]= "Version 1.06.0006 " __DATE__ " "  __TIME__;
+       char compver[]= "Version 1.06.0007 " __DATE__ " "  __TIME__;
        char slash= '\\';
 #else   // !__WIN__
        char slash= '/';
@@ -288,11 +288,16 @@ static MYSQL_THDVAR_SET(
 	0,                         // def (NO)
 	&xtrace_typelib);          // typelib
 
-																	 // Getting exact info values
+// Getting exact info values
 static MYSQL_THDVAR_BOOL(exact_info, PLUGIN_VAR_RQCMDARG,
        "Getting exact info values",
        NULL, NULL, 0);
 
+// Enabling cond_push
+static MYSQL_THDVAR_BOOL(cond_push, PLUGIN_VAR_RQCMDARG,
+	"Enabling cond_push",
+	NULL, NULL, 1);							// YES by default
+
 /**
   Temporary file usage:
     no:    Not using temporary file
@@ -427,6 +432,7 @@ handlerton *connect_hton= NULL;
 uint GetTraceValue(void)
 	{return (uint)(connect_hton ? THDVAR(current_thd, xtrace) : 0);}
 bool ExactInfo(void) {return THDVAR(current_thd, exact_info);}
+bool CondPushEnabled(void) {return THDVAR(current_thd, cond_push);}
 USETEMP UseTemp(void) {return (USETEMP)THDVAR(current_thd, use_tempfile);}
 int GetConvSize(void) {return THDVAR(current_thd, conv_size);}
 TYPCONV GetTypeConv(void) {return (TYPCONV)THDVAR(current_thd, type_conv);}
@@ -3196,7 +3202,7 @@ const COND *ha_connect::cond_push(const COND *cond)
 {
   DBUG_ENTER("ha_connect::cond_push");
 
-  if (tdbp) {
+  if (tdbp && CondPushEnabled()) {
     PGLOBAL& g= xp->g;
     AMT      tty= tdbp->GetAmType();
     bool     x= (tty == TYPE_AM_MYX || tty == TYPE_AM_XDBC);
@@ -7243,7 +7249,8 @@ static struct st_mysql_sys_var* connect_system_variables[]= {
 #if defined(JAVA_SUPPORT) || defined(CMGO_SUPPORT)
 	MYSQL_SYSVAR(enable_mongo),
 #endif   // JAVA_SUPPORT || CMGO_SUPPORT   
-NULL
+	MYSQL_SYSVAR(cond_push),
+	NULL
 };
 
 maria_declare_plugin(connect)
@@ -7256,10 +7263,10 @@ maria_declare_plugin(connect)
   PLUGIN_LICENSE_GPL,
   connect_init_func,                            /* Plugin Init */
   connect_done_func,                            /* Plugin Deinit */
-  0x0106,                                       /* version number (1.05) */
+  0x0107,                                       /* version number (1.05) */
   NULL,                                         /* status variables */
   connect_system_variables,                     /* system variables */
-  "1.06.0006",                                  /* string version */
+  "1.06.0007",                                  /* string version */
 	MariaDB_PLUGIN_MATURITY_STABLE                /* maturity */
 }
 maria_declare_plugin_end;

storage/connect/jdbconn.h

@@ -29,6 +29,7 @@ class JDBConn : public JAVAConn {
 	// Attributes
 public:
 	char   *GetQuoteChar(void) { return m_IDQuoteChar; }
+	bool    SetUUID(PGLOBAL g, PTDBJDBC tjp);
 	virtual int  GetMaxValue(int infotype);
 
 public:
@@ -58,13 +59,6 @@ class JDBConn : public JAVAConn {
 
 protected:
 	// Members
-#if 0
-	JavaVM   *jvm;              // Pointer to the JVM (Java Virtual Machine)
-	JNIEnv   *env;              // Pointer to native interface
-	jclass    jdi;							// Pointer to the java wrapper class
-	jobject   job;							// The java wrapper class object
-	jmethodID errid;						// The GetErrmsg method ID
-#endif // 0
 	jmethodID xqid;							// The ExecuteQuery method ID
 	jmethodID xuid;							// The ExecuteUpdate method ID
 	jmethodID xid;							// The Execute method ID
@@ -84,8 +78,7 @@ class JDBConn : public JAVAConn {
 	jmethodID timfldid;					// The TimeField method ID
 	jmethodID tspfldid;					// The TimestampField method ID
 	jmethodID bigfldid;					// The BigintField method ID
-//	PCSZ      Msg;
-//	PCSZ      m_Wrap;
+	jmethodID uidfldid;					// The UuidField method ID
 	char      m_IDQuoteChar[2];
 	PCSZ      m_Pwd;
   int       m_Ncol;

storage/connect/mysql-test/connect/r/jdbc_postgresql.result

+SET GLOBAL connect_class_path='C:/MariaDB-10.2/MariaDB/storage/connect/mysql-test/connect/std_data/JavaWrappers.jar;C:/Jconnectors/postgresql-42.2.1.jar';
 CREATE TABLE t2 (
 command varchar(128) not null,
 number int(5) not null flag=1,
 message varchar(255) flag=2)
-ENGINE=CONNECT TABLE_TYPE=JDBC CONNECTION='jdbc:postgresql://localhost/mtr'
-OPTION_LIST='User=mtr,Password=mtr,Schema=public,Execsrc=1';
+ENGINE=CONNECT TABLE_TYPE=JDBC
+CONNECTION='jdbc:postgresql://localhost/test?user=postgres&password=tinono'
+OPTION_LIST='Execsrc=1';
 SELECT * FROM t2 WHERE command='drop table employee';
 command	number	message
 drop table employee	0	Execute: org.postgresql.util.PSQLException: ERREUR: la table « employee » n'existe pas
@@ -14,17 +16,18 @@ SELECT * FROM t2 WHERE command = "insert into employee values(4567,'Johnson', 'E
 command	number	message
 insert into employee values(4567,'Johnson', 'Engineer', 12560.50)	1	Affected rows
 CREATE TABLE t1 ENGINE=CONNECT TABLE_TYPE=JDBC CATFUNC=tables
-CONNECTION='jdbc:postgresql://localhost/mtr'
-OPTION_LIST='User=mtr,Password=mtr,Schema=public,Tabtype=TABLE,Maxres=10';
+CONNECTION='jdbc:postgresql://localhost/test?user=postgres&password=tinono'
+OPTION_LIST='Tabtype=TABLE,Maxres=10';
 SELECT * FROM t1;
 Table_Cat	Table_Schema	Table_Name	Table_Type	Remark
-	public	employee	TABLE	NULL
-	public	t1	TABLE	NULL
-	public	t2	TABLE	NULL
+NULL	public	employee	TABLE	NULL
+NULL	public	t1	TABLE	NULL
+NULL	public	t2	TABLE	NULL
+NULL	public	tchar	TABLE	NULL
+NULL	public	testuuid	TABLE	NULL
 DROP TABLE t1;
-CREATE TABLE t1 ENGINE=CONNECT TABLE_TYPE=JDBC CATFUNC=columns
-CONNECTION='jdbc:postgresql://localhost/mtr' tabname=employee
-OPTION_LIST='User=mtr,Password=mtr,Maxres=10';
+CREATE TABLE t1 ENGINE=CONNECT TABLE_TYPE=JDBC tabname=employee CATFUNC=columns
+CONNECTION='jdbc:postgresql://localhost/test?user=postgres&password=tinono';
 SELECT * FROM t1;
 Table_Cat	Table_Schema	Table_Name	Column_Name	Data_Type	Type_Name	Column_Size	Buffer_Length	Decimal_Digits	Radix	Nullable	Remarks
 NULL	public	employee	id	4	int4	10	0	0	10	0	NULL
@@ -34,13 +37,14 @@ NULL	public	employee	salary	2	numeric	8	0	2	10	1	NULL
 DROP TABLE t1;
 CREATE SERVER 'postgresql' FOREIGN DATA WRAPPER 'postgresql' OPTIONS (
 HOST 'localhost',
-DATABASE 'mtr',
-USER 'mtr',
-PASSWORD 'mtr',
+DATABASE 'test',
+USER 'postgres',
+PASSWORD 'tinono',
 PORT 0,
 SOCKET '',
 OWNER 'root');
-CREATE TABLE t1 ENGINE=CONNECT TABLE_TYPE=JDBC CONNECTION='postgresql/public.employee';
+CREATE TABLE t1 ENGINE=CONNECT TABLE_TYPE=JDBC
+CONNECTION='postgresql/public.employee';
 SELECT * FROM t1;
 id	name	title	salary
 4567	Johnson	Engineer	12560.50
@@ -60,6 +64,3 @@ SELECT * FROM t2 WHERE command='drop table employee';
 command	number	message
 drop table employee	0	Affected rows
 DROP TABLE t2;
-SET GLOBAL connect_jvm_path=NULL;
-SET GLOBAL connect_class_path=NULL;
-SET GLOBAL time_zone = SYSTEM;

storage/connect/mysql-test/connect/t/jdbc_postgresql.test

@@ -3,25 +3,32 @@
 #
 # This test is run against Postgresql driver
 #
+eval SET GLOBAL connect_class_path='$MTR_SUITE_DIR/std_data/JavaWrappers.jar;C:/Jconnectors/postgresql-42.2.1.jar';
 CREATE TABLE t2 (
   command varchar(128) not null,
   number int(5) not null flag=1,
   message varchar(255) flag=2)
-ENGINE=CONNECT TABLE_TYPE=JDBC CONNECTION='jdbc:postgresql://localhost/mtr'
-OPTION_LIST='User=mtr,Password=mtr,Schema=public,Execsrc=1';
+ENGINE=CONNECT TABLE_TYPE=JDBC
+CONNECTION='jdbc:postgresql://localhost/test?user=postgres&password=tinono'
+OPTION_LIST='Execsrc=1';
+#CONNECTION='jdbc:postgresql://localhost/mtr'
+#OPTION_LIST='User=mtr,Password=mtr,Schema=public,Execsrc=1';
 SELECT * FROM t2 WHERE command='drop table employee';
 SELECT * FROM t2 WHERE command = 'create table employee (id int not null, name varchar(32), title char(16), salary decimal(8,2))';
 SELECT * FROM t2 WHERE command = "insert into employee values(4567,'Johnson', 'Engineer', 12560.50)";
 
 CREATE TABLE t1 ENGINE=CONNECT TABLE_TYPE=JDBC CATFUNC=tables
-CONNECTION='jdbc:postgresql://localhost/mtr'
-OPTION_LIST='User=mtr,Password=mtr,Schema=public,Tabtype=TABLE,Maxres=10';
+CONNECTION='jdbc:postgresql://localhost/test?user=postgres&password=tinono'
+OPTION_LIST='Tabtype=TABLE,Maxres=10';
+#CONNECTION='jdbc:postgresql://localhost/mtr'
+#OPTION_LIST='User=mtr,Password=mtr,Schema=public,Tabtype=TABLE,Maxres=10';
 SELECT * FROM t1;
 DROP TABLE t1;
 
-CREATE TABLE t1 ENGINE=CONNECT TABLE_TYPE=JDBC CATFUNC=columns
-CONNECTION='jdbc:postgresql://localhost/mtr' tabname=employee
-OPTION_LIST='User=mtr,Password=mtr,Maxres=10';
+CREATE TABLE t1 ENGINE=CONNECT TABLE_TYPE=JDBC tabname=employee CATFUNC=columns
+CONNECTION='jdbc:postgresql://localhost/test?user=postgres&password=tinono';
+#CONNECTION='jdbc:postgresql://localhost/mtr' tabname=employee;
+#OPTION_LIST='User=mtr,Password=mtr,Maxres=10';
 SELECT * FROM t1;
 DROP TABLE t1;
 
@@ -30,14 +37,18 @@ DROP TABLE t1;
 #
 CREATE SERVER 'postgresql' FOREIGN DATA WRAPPER 'postgresql' OPTIONS (
 HOST 'localhost',
-DATABASE 'mtr',
-USER 'mtr',
-PASSWORD 'mtr',
+DATABASE 'test',
+USER 'postgres',
+PASSWORD 'tinono',
 PORT 0,
 SOCKET '',
 OWNER 'root');
+#DATABASE 'mtr',
+#USER 'mtr',
+#PASSWORD 'mtr',
 
-CREATE TABLE t1 ENGINE=CONNECT TABLE_TYPE=JDBC CONNECTION='postgresql/public.employee';
+CREATE TABLE t1 ENGINE=CONNECT TABLE_TYPE=JDBC
+CONNECTION='postgresql/public.employee';
 SELECT * FROM t1;
 INSERT INTO t1 VALUES(3126,'Smith', 'Clerk', 5230.00);
 UPDATE t1 SET salary = salary + 100.00;

storage/connect/mysql-test/connect/t/jdbconn.inc

@@ -22,10 +22,11 @@ DROP TABLE t1;
 # 1 - The current directory.
 # 2 - The paths of the connect_class_path global variable.
 # 3 - The paths of the CLASSPATH environment variable.
-# In this test we use an executable jar file that contains all what is needed.
-eval SET GLOBAL connect_class_path='$MTR_SUITE_DIR/std_data/JdbcMariaDB.jar';
+# In this test we use an executable jar file that contains all the eisting wrappers.
+#eval SET GLOBAL connect_class_path='$MTR_SUITE_DIR/std_data/JdbcMariaDB.jar';
+eval SET GLOBAL connect_class_path='$MTR_SUITE_DIR/std_data/JavaWrappers.jar';
 
-# Paths to the JDK classes and to the MySQL and MariaDB drivers can be defined in the CLASSPATH environment variable
+# Paths to the JDK classes and to the JDBC drivers should be defined in the CLASSPATH environment variable
 #CREATE FUNCTION envar RETURNS STRING SONAME 'ha_connect.dll';
 #SELECT envar('CLASSPATH');
 

storage/connect/plgdbsem.h

@@ -362,7 +362,8 @@ enum COLUSE {U_P         = 0x01,      /* the projection list.          */
              U_IS_NULL   = 0x80,      /* The column has a null value   */
              U_SPECIAL   = 0x100,     /* The column is special         */
              U_UNSIGNED  = 0x200,     /* The column type is unsigned   */
-             U_ZEROFILL  = 0x400};    /* The column is zero filled     */
+             U_ZEROFILL  = 0x400,     /* The column is zero filled     */
+						 U_UUID      = 0x800};    /* The column is a UUID          */
 
 /***********************************************************************/
 /*  DB description class and block pointer definitions.                */

storage/connect/tabjdbc.cpp

@@ -605,6 +605,10 @@ bool TDBJDBC::OpenDB(PGLOBAL g)
 	else if (Quoted)
 		Quote = Jcp->GetQuoteChar();
 
+	if (Mode != MODE_READ && Mode != MODE_READX)
+		if (Jcp->SetUUID(g, this))
+			PushWarning(g, this, 1);
+
 	Use = USE_OPEN;       // Do it now in case we are recursively called
 
 	/*********************************************************************/
@@ -970,6 +974,7 @@ void TDBJDBC::CloseDB(PGLOBAL g)
 JDBCCOL::JDBCCOL(PCOLDEF cdp, PTDB tdbp, PCOL cprec, int i, PCSZ am)
 	     : EXTCOL(cdp, tdbp, cprec, i, am)
 {
+	uuid = false;
 } // end of JDBCCOL constructor
 
 /***********************************************************************/
@@ -977,6 +982,7 @@ JDBCCOL::JDBCCOL(PCOLDEF cdp, PTDB tdbp, PCOL cprec, int i, PCSZ am)
 /***********************************************************************/
 JDBCCOL::JDBCCOL(void) : EXTCOL()
 {
+	uuid = false;
 } // end of JDBCCOL constructor
 
 /***********************************************************************/
@@ -985,12 +991,11 @@ JDBCCOL::JDBCCOL(void) : EXTCOL()
 /***********************************************************************/
 JDBCCOL::JDBCCOL(JDBCCOL *col1, PTDB tdbp) : EXTCOL(col1, tdbp)
 {
+	uuid = col1->uuid;
 } // end of JDBCCOL copy constructor
 
 /***********************************************************************/
-/*  ReadColumn: when SQLFetch is used there is nothing to do as the    */
-/*  column buffer was bind to the record set. This is also the case    */
-/*  when calculating MaxSize (Bufp is NULL even when Rows is not).     */
+/*  ReadColumn: retrieve the column value via the JDBC driver.         */
 /***********************************************************************/
 void JDBCCOL::ReadColumn(PGLOBAL g)
 {

storage/connect/tabjdbc.h

@@ -101,6 +101,7 @@ class TDBJDBC : public TDBEXT {
 /***********************************************************************/
 class JDBCCOL : public EXTCOL {
 	friend class TDBJDBC;
+	friend class JDBConn;
 public:
 	// Constructors
 	JDBCCOL(PCOLDEF cdp, PTDB tdbp, PCOL cprec, int i, PCSZ am = "JDBC");
@@ -119,6 +120,7 @@ class JDBCCOL : public EXTCOL {
   JDBCCOL(void);
 
 	// Members
+	bool uuid;											 // For PostgreSQL
 }; // end of class JDBCCOL
 
 /***********************************************************************/