如何将整数数组传递给 Informix 存储过程
How to pass array of integer to Informix stored procedure
在 Java 中,如何将类型集的值传递给过程。这似乎太基础了,但我无法解决它,我花了几天时间搜索示例 Java 代码,了解如何将设置值传递给 Informix 过程。
工具
IBM Informix Dynamic Server Version 12.10.FC13
JDBC 4.10.14, 4.50.7
Java version "1.8.0_172"
Informix 程序
create procedure sp_demo_set_arg(
arg1 set(integer not null)
)
...
end procedure
Java代码
@Override
public Integer callProcedure(List<Integer> listOfId) {
String sql = "{ call sp_demo_set_arg(?) }";
@SuppressWarnings("rawtypes")
java.util.HashSet arg1 = new HashSet();
Integer intObject;
int i;
for (i=1; i <= 3; i++)
{
intObject = new Integer(i);
arg1.add(intObject);
}
Connection conn = null;
try {
conn = dataSource.getConnection();
CallableStatement stmt = conn.prepareCall(sql);
stmt.setObject(1, arg1);
stmt.executeUpdate();
return 0;
} catch (SQLException e) {
e.printStackTrace();
}
return 1;
}
堆栈跟踪
...
java.sql.SQLException: Routine (sp_demo_set_arg) can not be resolved.
at com.informix.jdbc.IfxSqli.addException(IfxSqli.java:3133)
at com.informix.jdbc.IfxSqli.receiveError(IfxSqli.java:3417)
at com.informix.jdbc.IfxSqli.dispatchMsg(IfxSqli.java:2324)
at com.informix.jdbc.IfxSqli.receiveMessage(IfxSqli.java:2249)
at com.informix.jdbc.IfxSqli.executeCommand(IfxSqli.java:850)
at com.informix.jdbc.IfxResultSet.executeUpdate(IfxResultSet.java:230)
at com.informix.jdbc.IfxStatement.executeUpdateImpl(IfxStatement.java:1054)
at com.informix.jdbc.IfxPreparedStatement.executeUpdate(IfxPreparedStatement.java:396)
at
...
您的 java 代码可能会失败并显示 -674“无法解析例程”错误,因为服务器在执行时可能不知道参数类型。
尝试给它一些 'hints' 改变 '?'对于 '?::SET(整数不为空)'
类似于:
D:\Infx\work\Java>cat t2.java
import java.sql.*;
import java.util.*;
public class t2 {
public static void main( String [] args ) {
Connection conn = null;
ResultSet dbRes = null;
Statement is = null;
try {
Class.forName("com.informix.jdbc.IfxDriver");
conn = DriverManager.getConnection("jdbc:informix-sqli://420ito:9091/stores7:INFORMIXSERVER=ids1410;user=informix;password=passw;SQLIDEBUG=pp;");
is = conn.createStatement();
is.executeUpdate("drop table t2; create table t2 (c1 SET(integer not null) );");
java.util.HashSet arg1 = new HashSet();
Integer intObject;
int i;
for (i=1; i <= 3; i++)
{
intObject = new Integer(i);
arg1.add(intObject);
}
try {
//CallableStatement stmt = conn.prepareCall("{ CALL p2(?)}");
CallableStatement stmt = conn.prepareCall("{ CALL p2(?::SET(integer not null))}");
stmt.setObject(1, arg1);
stmt.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
}
Statement st = conn.createStatement();
ResultSet rs = st.executeQuery("SELECT * FROM t2");
while (rs.next()) {
java.util.HashSet set = (HashSet) rs.getObject(1);
Iterator it = set.iterator();
Object obj;
i = 0;
while (it.hasNext())
{
obj = it.next();
System.out.println(" element[" + i + "] = " + obj.toString());
i++;
}
}
rs.close();
conn.close();
}
catch ( Exception e ) {
System.err.println(e);
e.printStackTrace();
}
}
}
D:\Infx\work\Java>javac t2.java
Note: t2.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
D:\Infx\work\Java>java t2
element[0] = 1
element[1] = 2
element[2] = 3
D:\Infx\work\Java>
在 Java 中,如何将类型集的值传递给过程。这似乎太基础了,但我无法解决它,我花了几天时间搜索示例 Java 代码,了解如何将设置值传递给 Informix 过程。
工具
IBM Informix Dynamic Server Version 12.10.FC13
JDBC 4.10.14, 4.50.7
Java version "1.8.0_172"
Informix 程序
create procedure sp_demo_set_arg(
arg1 set(integer not null)
)
...
end procedure
Java代码
@Override
public Integer callProcedure(List<Integer> listOfId) {
String sql = "{ call sp_demo_set_arg(?) }";
@SuppressWarnings("rawtypes")
java.util.HashSet arg1 = new HashSet();
Integer intObject;
int i;
for (i=1; i <= 3; i++)
{
intObject = new Integer(i);
arg1.add(intObject);
}
Connection conn = null;
try {
conn = dataSource.getConnection();
CallableStatement stmt = conn.prepareCall(sql);
stmt.setObject(1, arg1);
stmt.executeUpdate();
return 0;
} catch (SQLException e) {
e.printStackTrace();
}
return 1;
}
堆栈跟踪
...
java.sql.SQLException: Routine (sp_demo_set_arg) can not be resolved.
at com.informix.jdbc.IfxSqli.addException(IfxSqli.java:3133)
at com.informix.jdbc.IfxSqli.receiveError(IfxSqli.java:3417)
at com.informix.jdbc.IfxSqli.dispatchMsg(IfxSqli.java:2324)
at com.informix.jdbc.IfxSqli.receiveMessage(IfxSqli.java:2249)
at com.informix.jdbc.IfxSqli.executeCommand(IfxSqli.java:850)
at com.informix.jdbc.IfxResultSet.executeUpdate(IfxResultSet.java:230)
at com.informix.jdbc.IfxStatement.executeUpdateImpl(IfxStatement.java:1054)
at com.informix.jdbc.IfxPreparedStatement.executeUpdate(IfxPreparedStatement.java:396)
at
...
您的 java 代码可能会失败并显示 -674“无法解析例程”错误,因为服务器在执行时可能不知道参数类型。 尝试给它一些 'hints' 改变 '?'对于 '?::SET(整数不为空)'
类似于:
D:\Infx\work\Java>cat t2.java
import java.sql.*;
import java.util.*;
public class t2 {
public static void main( String [] args ) {
Connection conn = null;
ResultSet dbRes = null;
Statement is = null;
try {
Class.forName("com.informix.jdbc.IfxDriver");
conn = DriverManager.getConnection("jdbc:informix-sqli://420ito:9091/stores7:INFORMIXSERVER=ids1410;user=informix;password=passw;SQLIDEBUG=pp;");
is = conn.createStatement();
is.executeUpdate("drop table t2; create table t2 (c1 SET(integer not null) );");
java.util.HashSet arg1 = new HashSet();
Integer intObject;
int i;
for (i=1; i <= 3; i++)
{
intObject = new Integer(i);
arg1.add(intObject);
}
try {
//CallableStatement stmt = conn.prepareCall("{ CALL p2(?)}");
CallableStatement stmt = conn.prepareCall("{ CALL p2(?::SET(integer not null))}");
stmt.setObject(1, arg1);
stmt.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
}
Statement st = conn.createStatement();
ResultSet rs = st.executeQuery("SELECT * FROM t2");
while (rs.next()) {
java.util.HashSet set = (HashSet) rs.getObject(1);
Iterator it = set.iterator();
Object obj;
i = 0;
while (it.hasNext())
{
obj = it.next();
System.out.println(" element[" + i + "] = " + obj.toString());
i++;
}
}
rs.close();
conn.close();
}
catch ( Exception e ) {
System.err.println(e);
e.printStackTrace();
}
}
}
D:\Infx\work\Java>javac t2.java
Note: t2.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
D:\Infx\work\Java>java t2
element[0] = 1
element[1] = 2
element[2] = 3
D:\Infx\work\Java>