IBM Informix Developer's Handbook - IBM Redbooks

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SQLAllocHandle (SQL_HANDLE_ENV, SQL_NULL_HANDLE, &henv); SQLSetEnvAttr (henv, SQL_ATTR_ODBC_VERSION, (SQLPOINTER) SQL_OV_ODBC3, 0); SQLAllocHandle (SQL_HANDLE_DBC, henv, &hdbc); SQLDriverConnect (hdbc, NULL, connStrIn, SQL_NTS, connStrOut, sizeof(connStrOut), &connStrOutLen, SQL_DRIVER_NOPROMPT); fprintf (stdout, "Connected\n"); 92 IBM Informix Developer’s Handbook SQLAllocHandle (SQL_HANDLE_STMT, hdbc, &hstmt ); SQLSetConnectAttr (hdbc, SQL_ATTR_AUTOCOMMIT, SQL_AUTOCOMMIT_OFF, (SQLINTEGER) NULL); SQLPrepare (hstmt, sqlstmt, strlen(sqlstmt)); SQLDescribeParam(hstmt, 1, &datatype, &paramsize, &decimaldigits, &nullable); SQLBindParameter(hstmt, 1, SQL_PARAM_INPUT, SQL_C_SHORT, datatype, paramsize, decimaldigits, &cnum, 0, NULL); } while (cnumcl /DWIN32 /D_CRT_SECURE_NO_DEPRECATE -ID:\infx\csdk350tc7\incl\cli odbc32.lib /nologo transact.c transact.c C:\work>del pp* C:\work>transact.exe Connected Executed SQL Statement: INSERT INTO orders(order_num,order_date,customer_num) VALUES (0,current,?) Using: '101' Executed SQL Statement:
INSERT INTO orders(order_num,order_date,customer_num) VALUES (0,current,?) Using: '102' Executed SQL Statement: INSERT INTO orders(order_num,order_date,customer_num) VALUES (0,current,?) Using: '103' Executed SQL Statement: INSERT INTO orders(order_num,order_date,customer_num) VALUES (0,current,?) Using: '104' Transaction Rolled back C:\work> Distributed transactions On a Windows system, you can run a distributed transaction using the Microsoft Distributed Transaction Coordinator (MSDTC) service. Example 3-21 demonstrates how to run a distributed transaction. The example opens two connections to two different database servers and enlists both connections into the same distributed transaction. Example 3-21 Transaction_dtc.cpp #include #include #include #ifdef WIN32 #include #include #include #include #include #endif #include "infxcli.h" int main (long argc, char* argv[]) { SQLHDBC hdbc, hdbc2; SQLHENV henv; SQLHSTMT hstmt, hstmt2; SQLRETURN rc = 0; SQLCHAR connStrIn[100],connStrIn2[100]; SQLCHAR connStrOut[1000]; SQLSMALLINT connStrOutLen; SQLCHAR sqlstmt[100]; SQLINTEGER cnum = 101; SQLSMALLINT datatype, decimaldigits, nullable; SQLUINTEGER paramsize; Chapter 3. Working with the ODBC driver 93
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IBM Informix Developer’s Handbook
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Note: Before using this information
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3.2 Setup and configuration . . . .
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8.3.1 Connecting to the database .
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12.5.2 Compiling the wrapper code .
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Trademarks IBM, the IBM logo, and i
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Krishna Doddi (also known as Prasad
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Comments welcome Your comments are
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1.1 Server options There are a numb
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This edition offers the following a
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either an HDR secondary or RSS seco
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There are three edition options for
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functions. An application calls the
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The IBM Data Server Driver for JDBC
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OLEDB Microsoft OLE DB is a specifi
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The DataBlade Developers Kit provid
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1.3.1 Architecture overview An unde
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Physical and logical logging As eac
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Before you select an API or library
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Hidden, behind-the- scenes tasking
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2.1 Server setup In this section, w
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A typical sqlhosts file contains th
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Figure 2-1 shows the Server Informa
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with the existing Informix instance
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2.2 Client setup ► Edit the Infor
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Figure 2-4 illustrates the options
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2. Prepare the environment. You nee
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5. If you selected a Custom install
Page 58 and 59: At this stage, the Client SDK insta
Page 60 and 61: You can download some of these comp
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Page 64 and 65: 2. On the Software License Agreemen
Page 66 and 67: 5. Verify the installation selectio
Page 68 and 69: 3. Extract the IBM Data Server Driv
Page 70 and 71: For a silent installation on both W
Page 72 and 73: Configuring the JDBC driver To use
Page 74 and 75: 3.1 ODBC and Informix ODBC is a sof
Page 76 and 77: ► IBM Informix ODBC Driver (64-bi
Page 78 and 79: You can set optional configuration
Page 80 and 81: Parameter Description Insert Cursor
Page 82 and 83: Table 3-5 shows the ODBC libraries
Page 84 and 85: Keyword Description DriverODBCVer S
Page 86 and 87: Keyword Description DESCRIBEDECIMAL
Page 88 and 89: If there is no database alias defin
Page 90 and 91: Example 3-5 shows a simple db2cli.i
Page 92 and 93: The application sends SQL request t
Page 94 and 95: } 78 IBM Informix Developer’s Han
Page 96 and 97: SQLSMALLINT DecimalDigits, /* ibSca
Page 98 and 99: If your application requires only S
Page 102 and 103: } SQLCHAR sname[15+1]; SQLLEN lcode
Page 104 and 105: fprintf (stdout, "Connected\n"); 88
Page 106 and 107: SQLAllocHandle (SQL_HANDLE_ENV, SQL
Page 112 and 113: contains the data or special attrib
Page 114 and 115: Function Description ifx_lo_specset
Page 116 and 117: SQLSMALLINT lospec_size; SQLINTEGER
Page 118 and 119: 4. Call ifx_lo_open() to open the s
Page 120 and 121: SQLBindParameter (hstmt, 1, SQL_PAR
Page 122 and 123: } SQLFreeHandle (SQL_HANDLE_ENV, he
Page 124 and 125: SQLCHAR*insertStmt = (SQLCHAR *) "I
Page 126 and 127: Accessing a complex data type Examp
Page 128 and 129: C:\work> 3.3.5 Error handling Ludwi
Page 130 and 131: C:\work>connect_error demo_on;UID=w
Page 132 and 133: We create a function called CheckDi
Page 134 and 135: Figure 3-14 shows the Tracing tab.
Page 136 and 137: Example 3-36 demonstrates how to se
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Page 142 and 143: 4.1 Informix ESQL/C Informix ESQL/C
Page 144 and 145: Example 4-1 shows a simple sqlhosts
Page 146 and 147: Compiling ESQL/C programs The esql
Page 148 and 149: Platform Environment variable Linux
Page 150 and 151: Example 4-3 shows a statement that
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Page 154 and 155: The SELECT statement shown in Examp
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Table 4-3 lists a few ESQL/C data t
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the sbspace in the server before yo
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Example 4-10 shows the ESQL/C comma
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Example 4-12 shows the output of Ex
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} EXEC SQL END DECLARE SECTION; 150
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C->S (16) Time: 2010-07-06 20:21:58
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5.1 JDBC drivers for an Informix da
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5.1.2 IBM Data Server Driver for JD
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Example 5-4 shows the CLASSPATH env
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Example 5-6 shows the compile line
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programmer uses Java data types to
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Example 5-9 shows the syntax of the
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" Connected to Informix Dynamic Ser
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5.4.2 Manipulating data In this sec
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conn.close(); } catch ( Exception e
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Example 5-15 demonstrates how to di
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conn = DriverManager.getConnection(
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con.setAutoCommit(false); Statement
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System.out.format("Last row: \t%d,"
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PreparedStatement pstmt=conn.prepar
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System.err.println(e); } } } Exampl
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Issuer: CN=bedfont.uk.ibm.com, O=ib
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5.6.1 Class not found errors The fo
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5.7.2 IBM Data Server Driver for JD
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6.1 Hibernate for Java This section
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A Hibernate application includes th
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6.2.2 Configuration File Descriptio
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Example 6-3 shows a hibernate.cfg.x
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name="State" table="States">
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Example 6-6 shows the CLASSPATH var
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informix password org.hibernate
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Example 6-11 shows basic Java code
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The only difference between the loa
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1, AZ, Arizona 2, CA, California C:
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Example 6-19 shows the output of th
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private Long id; private String cod
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214 IBM Informix Developer’s Hand
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7.1 IBM Informix OLE DB Provider In
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through COM. You can use it to test
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7.3.1 Supported interfaces An OLE D
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7.3.3 Type mapping Keyword Descript
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7.3.4 Cursors Informix OLE DB Provi
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Example 7-3 demonstrates how to con
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Connect to the Database Server CHEC
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#define CHECK(hr) if (((HRESULT)(hr
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} 232 IBM Informix Developer’s Ha
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if(lDataLength > 0) { // Call GetCh
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_bstr_t bstrPassWord = "password";
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Provider with some of the available
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cx.connectionstring = "Data Source=
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California 0.08250 c:\work> 7.4.3 S
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The user ID for the Informix databa
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happen that the 32-bit provider is
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7.5.2 Tracing Failure when handling
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A44: 53C Exit Object Address: 0x032
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8.1 Informix and .NET data provider
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Both providers have the same assemb
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Example 8-3 shows how to compile an
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Attribute Description Default Exclu
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The majority of the connection stri
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Data Server Provider for .NET type
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Example 8-7 shows the output of Exa
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Table 8-9 lists the methods that th
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Method Description IfxMonthSpan Get
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} } int drows=0; 272 IBM Informix D
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Example 8-16 shows the output of Ex
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Method Description Int64 Seek(offse
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... 280 IBM Informix Developer’s
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IfxConnection conn; IfxClob vclob;
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Property Type Description Year Int3
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Hour : 8 Minute: 20 C:\work>c Arith
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Method Description Compare(IfxDec1,
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C:\work>decimal Value Sales Tax : 0
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Ceiling Sales Tax : 1.0 Negative Sa
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Visual Studio Add-In provides tools
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9.1 Informix and PHP extensions The
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- Console mode Enter one of the fol
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9.2.4 Verifying connectivity You ca
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► Secure Although PHP is open sou
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*--- persistent connect trusted use
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In a web application, the input dat
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Dynamic SQL statements Dynamic SQL
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$stmt->bindValue(':p9', $_POST["pho
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*--- Verification ---*/ $stmt1=$dbc
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$row=$stmt1->fetch(PDO::FETCH_ASSOC
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} /*--- Get the BLOB from the datab
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In Example 9-17 on page 316, the da
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Function Description db2_bind_param
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The IBM_DB2 extension This PHP exte
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9.3.5 Exception handling Error hand
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The error information that is gener
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9.3.6 Troubleshooting printf("NonCr
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10.1 An overview of UDRs and databa
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10.1.2 About UDRs specific examples
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Invoking a UDR You can invoke a UDR
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10.2 Developing UDRs To develop a U
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One variable in, one result out For
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10.2.2 UDRs in Java 5 1005 6 1006 7
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Note: The paths for .jar files that
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We use the following procedure to c
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For our example, JVPCLASSPATH is se
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10.2.3 UDRs in C and break somethin
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3. Set the bld file permissions as
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4. Create the function in dbaccess.
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Installing the DataBlade Any DataBl
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To connect to a database, run one o
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IBM Informix DataBlade module name
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interface, called BladeSmith, allow
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11.1 A brief overview of Ruby on Ra
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The following drivers allow Ruby to
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Data types The Ruby Informix driver
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03/07/2010 17:30 1,088 LICENSE 03/0
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The Rails Adapter can be installed
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server: demo_on username: informix
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Using Ruby Informix driver In this
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If the SQL statement returns only o
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Example 11-17 shows how to select a
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Example 11-19 shows a simple Ruby s
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# create a prepare object stmt = IB
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11.4 Using the Rails Adapter with R
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For more information, refer to: htt
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Figure 11-1 shows the Listing items
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11.5.1 Creating the Rails applicati
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11.5.4 Migrating the model Ruby on
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11.5.5 Starting the Rails web serve
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12.1 Basic concepts In this section
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A web service can perform the follo
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Example 12-1 shows a typical shell
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12.3.2 The w4gl utility For additio
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Parameter Description ws_func Funct
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In the remaining sections, we descr
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Example 12-8 shows the APP SERVER f
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Add details about the web service Y
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Source file information Finally, yo
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The Generate operation creates the
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process, running each individual st
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The compressed file is left in the
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Figure 12-3 shows the WSDL informat
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| Target Directory [/work/publish ]
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After this process is complete, the
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while using one of the I4GL web ser
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Keeping the wrapper C files in the
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12.6.2 Tracing A developer can use
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13.1 Concurrency and locking 13.1.1
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13.1.2 Lock duration The length of
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If a table is not created with row
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How the database server manages byt
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13.2.1 Deadlocks reader can read a
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ow that has not been committed (thi
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should check with the DBA to determ
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Note: For information about writing
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The amount of memory storage per lo
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The DIRECTIVES parameter The DIRECT
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13.5 Working with your database adm
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► Metadata updates affect logging
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Guidelines for setting VPCLASS: ►
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The lock level is determined by the
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area of specific interest. The func
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B.1 Distributed transactions A tran
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* Compile with: * on UNIX systems:
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} { printf("XA_PREPARE failed with
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When using distributed transactions
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Online resources ► IBM Informix D
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cast function 332 cast support func
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IfxDecimal public method 287 ifxdot
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jvpjavavm 341 jvplog 347 jvplogfile
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sql_longvarbinary 80, 96 sql_longva
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IBM Informix Developer’s Handbook
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