Converting Spatial Objects to strings

Hi,
Many tools (SQL*Plus, DBVisualizer, various Python modules) seem to be able to retrieve spatial objects as strings. Is this conversion being done by each tool, or does the database know how to convert objects (at least Oracle Spatial objects) to strings?
Is there any way to get string as the result of a query of an Oracle Spatial object with Pro*C or the other precompilers?
Thanks for any information,
-- Andrew Bell
[email protected]

Andrew
Is your question about decoding the struct returned in an OCI, Pro*C, or SQLJ program to get at the fields of an sdo_geometry type?
There are oci examples (readgeom.c, writegeom.c) on OTN.
Jayant

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has said above, im trying to convert a object to a string.
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Object nodeInfo = node.getUserObject()

RTFM
Object o =...
String str = o.toString();

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Hi developers,
I have a very complex issue to convert the server date string format "EEE MMM dd HH:mm:ss z yyyy" into java.util.Date object and find the difference of the client machine date to represent the elapsed time
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If any help to solve the above issue is appriciated
please send the response with the same subject line
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Why don't you just subtract from the server time the 3:30 hours (consult api of java.util.date) before comparing with the client date? Hard to see where's the problem...

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How would someone convert an object of say (String, int, double, String) into a readable string. I tried the toString() method but all I get is something like this
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import cs1.Keyboard;
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double newGPAs;
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try
BufferedReader in = new BufferedReader(new FileReader("LIST.out"));
while (in.ready())
// Print file line to scree
System.out.println (in.readLine());
in.close();
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AUTHOR:
DATE OF CREATION: Nov 20, 2004
DATE OF UPDATES: Nov 28, 2004
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INSTANCE VARIABLES: none
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public class Student
private String name;
private int social;
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private String Major;
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METHOD NAME: Student
AUTHOR:
DATE OF CREATION: Nov 20, 2004
DATE OF UPDATES: Nov 28, 2004
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name = newName;
social = newSocial;
GPA = newGPAs;
Major = newMajors;
import java.io.*;
import cs1.Keyboard;
import java.io.BufferedWriter;
import java.util.*;
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private StudentNode list;
static int i = 0;
public StudentList12()
METHOD NAME: StudentList12
AUTHOR:
DATE OF CREATION: Nov 20, 2004
DATE OF UPDATES: Nov 28, 2004
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DATE OF CREATION: Nov 20, 2004
DATE OF UPDATES: Nov 28, 2004
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while(t.getNext() != null)
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int z = n;
try
PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("LIST.out")));
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System.out.println(counter);
out.close();
catch(Exception e)
System.err.println("Couldn't Write File");
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Converting large amounts of points - 76 million lat/lon's to spatial object...

Hello, I need help.
Platform - Oracle 11g 64bit on Windows Enterprise server 2008 64bit. 64 GB of ram with 2 CPUs totalling 24 cores
Does any one know of a fast way to convert large amounts of points to a spatial object? I need to convert 76 million lat/lon's to ESRI st_geometry or Oracle sdo_geometry.
Currently, I have setup code using pipelined parallel functions and multiple jobs that run concurrently. It still takes over 2.5 hours to process all of the points.
Any pointers would be GREATLY appreciated!
Thanks
John

Hi,
Where is the lat/lon data at the moment? In an external text file or in an existing database table as number attributes?
If they're in an external text file, then I'd probably use an external table to load them in as quickly as possible.
If they're in an existing database table, then you can just update the sdo_geometry column using:
update <table> set <geometry column> = sdo_geometry(2001, <your srid>, sdo_point_type(<lon column>, <lat column>, null), null, null)
where <lon column> is not null
and <lat column> is not null;
That should run very quick for you. If you want to avoid the overhead of creating redo, you could use "create table .... as select...". This example of creating 1,000,000 points runs in 9 seconds for me.
create table sample_points (geometry) nologging as
(select sdo_geometry(2001, null,
sdo_point_type(
trunc(100000 * dbms_random.value()),
trunc(100000 * dbms_random.value()),
null), null, null)
from dual connect by level <= 1000000);
I have setup code using pipelined parallel functions and multiple jobs that run concurrently
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Accessing Oracle spatial objects (SDO_GEOMETRY) through ODBC/OLEDB

Hello.
I tried googling and reading through these forums and Oracle documentation, but I'm still uncertain on this question:
Are Oracle spatial objects (of type SDO_GEOMETRY) accessible through ODBC and/or OLE DB drivers? Can I retrieve them with SELECT clause? Can I write them to database?
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If geometry objects aren't suported by ODBC/OLEDB, is there any way to convert SDO_GEOMETRY to (and from) BLOB or string or whatever, so I can read and write them like a normal data field?
Thanks in advance.
Edited by: user13816863 on 25.01.2011 20:35
Edited by: user13816863 on 25.01.2011 21:57

The SDO_UTIL package has lots of options to help output spatial data to other formats, and you may be able to use some of them to help.
Some that come to mind are:
SDO_UTIL.TO_WKTGEOMETRY
SDO_UTIL.TO_GMLGEOMETRY
SDO_UTIL.TO_KMLGEOMETRY
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Convert a date in String format to a Date

Hi,
How can I convert a date in String format to a Date object?
I have tried:
import java.text.*;
import java.io.*;
import java.util.Date;
import java.util.Locale;
import java.sql.*;
public class casa {
public static Connection con = null;
public static Statement s = null;
public static String sql = null;
public static String mydate = "01.01.2001";
/** Creates a new instance of casa */
public casa() {
public static void main(String[] args) throws SQLException{
try {
DateFormat shortFormat = DateFormat.getDateInstance(DateFormat.SHORT);
Date date = shortFormat.parse(mydate);
//Open Database
con = getConnection();
s = con.createStatement();
sql = "select date1 from table1 where date1 <= '"+date+"'";
ResultSet rs = s.executeQuery(sql);
while(rs.next()){
String aba = rs.getString("datum");
System.out.println("New Datum = "+aba);
} catch (Exception ex ) {
ex.printStackTrace();
closeConnection(s, con);
//Connection
private static Connection getConnection() {
Connection con = null;
String user ="aouzi";
String passe ="aouzi";
String url = "jdbc:db2:EjbTest";
try {
//Datenbanktreiber laden
Class.forName("COM.ibm.db2.jdbc.app.DB2Driver");
//Verbindung herstellen
con = DriverManager.getConnection(url,user,passe);
}catch(ClassNotFoundException e){
} catch(SQLException e){}
return con;
//close Connection
private static void closeConnection(Statement s, Connection con) {
try {
s.close();
} catch (SQLException e) {}
try {
con.close();
} catch (SQLException e) {}
I'm getting the following errors:
COM.ibm.db2.jdbc.DB2Exception: [IBM][CLI Driver][DB2/NT] SQL0180N
The syntax of the representation of a date/time of day value as character sequence is false. .SQLSTATE=22007

I'm pretty sure it won't understand what date.toString() returns. If you know what format the database understands, you do it like this:
SimpleDateFormat sdf = new SimpleDateFormat("dd-MMM-yy"); // e.g. 18-Apr-02
String datestring = sdf.parse(date);
and use that instead of date in your sql string. Some databases understands it if you do
"to_date('18-Apr-02')"
so you could include that in your sql string as well..
You could also try to make it a java.sql.Date and hope your jdbc driver knows how to convert it to a string that the database understands if you don't know the format:
con = getConnection();
PreparedStatement ps = con.prepareStatement("select date1 from table1 where date1 <= ?");
ps.setDate(new java.sql.Date(date.getTime()));
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Convert the date of string to datetime format 'MM/dd/yyyy' when the system date format is 'dd/MM/yyyy'.

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I need to search values based on date where my database datetime is 'MM/dd/yyyy' format.

In my opinion you should re-consider the assumption that the date picker returns a string. Maybe it is able to return a
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Otherwise, follow the previous string-based approaches.

Help with converting an object to something else

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How to convert an Object to byte[]

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import java.io.*;
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How can i convert an object to stream of chars or bytes?

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2      (eno NUMBER(4)
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2 /
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21 END;
22 /
Package body created.
SQL>Looks good. Let's see it in action...
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2      newbies staff_nt := staff_nt();
3 BEGIN
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9 /
PL/SQL procedure successfully completed.
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2 /
     EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM
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      7778 J RANDOM   HACKER          7902 17-NOV-05       1800
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SQL>     Cheers, APC

Hello, 2 questionss here is it possible or is there a way to convert all object s outlines in all frames to fills at once and not frame by frame? and why sometimes erases the outline instead of converting it to fill?

Hello, 2 questionss here>is it possible or is there a way to convert all object s outlines in all frames to fills at once and not frame by frame? and why sometimes erases the outline instead of converting it to fill?

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Hi Specialists,
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Thanks,
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Hi All,
The problem has been resolved by transforming the user defined polygon coordinates into the database specific coordinate system.
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Converting Spatial Objects to strings

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