How do i convert an object into a string?

has said above, im trying to convert a object to a string.
here is what i ahve so far:
Object nodeInfo = node.getUserObject()

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

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How can I convert table object into table record format?

I need to write a store procedure to convert table object into table record. The stored procedure will have a table object IN and then pass the data into another stored procedure with a table record IN. Data passed in may contain more than one record in the table object. Is there any example I can take a look? Thanks.

I'm afraid it's a bit labourious but here's an example.
I think it's a good idea to work with SQL objects rather than PL/SQL nested tables.
SQL> CREATE OR REPLACE TYPE emp_t AS OBJECT
2      (eno NUMBER(4)
3      , ename VARCHAR2(10)
4      , job VARCHAR2(9)
5      , mgr NUMBER(4)
6      , hiredate DATE
7      , sal NUMBER(7,2)
8      , comm NUMBER(7,2)
9      , deptno NUMBER(2));
10 /
Type created.
SQL> CREATE OR REPLACE TYPE staff_nt AS TABLE OF emp_t
2 /
Type created.
SQL> Now we've got some Types let's use them. I've only implemented this as one public procedure but you can see the principles in action.
SQL> CREATE OR REPLACE PACKAGE emp_utils AS
2      TYPE EmpCurTyp IS REF CURSOR RETURN emp%ROWTYPE;
3      PROCEDURE pop_emp (p_emps in staff_nt);
4 END emp_utils;
5 /
Package created.
SQL> CREATE OR REPLACE PACKAGE BODY emp_utils AS
2      FUNCTION emp_obj_to_rows (p_emps IN staff_nt) RETURN EmpCurTyp IS
3          rc EmpCurTyp;
4      BEGIN
5          OPEN rc FOR SELECT * FROM TABLE( CAST ( p_emps AS staff_nt ));
6          RETURN rc;
7      END emp_obj_to_rows;
8      PROCEDURE pop_emp (p_emps in staff_nt) is
9          e_rec emp%ROWTYPE;
10          l_emps EmpCurTyp;
11      BEGIN
12          l_emps := emp_obj_to_rows(p_emps);
13          FETCH l_emps INTO e_rec;
14          LOOP
15              EXIT WHEN l_emps%NOTFOUND;
16              INSERT INTO emp VALUES e_rec;
17              FETCH l_emps INTO e_rec;
18          END LOOP;
19          CLOSE l_emps;
20      END pop_emp;
21 END;
22 /
Package body created.
SQL>Looks good. Let's see it in action...
SQL> DECLARE
2      newbies staff_nt := staff_nt();
3 BEGIN
4      newbies.extend(2);
5      newbies(1) := emp_t(7777, 'APC', 'CODER', 7902, sysdate, 1700, null, 40);
6      newbies(2) := emp_t(7778, 'J RANDOM', 'HACKER', 7902, sysdate, 1800, null, 40);
7      emp_utils.pop_emp(newbies);
8 END;
9 /
PL/SQL procedure successfully completed.
SQL> SELECT * FROM emp WHERE deptno = 40
2 /
     EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM
    DEPTNO
      7777 APC        CODER           7902 17-NOV-05       1700
        40
      7778 J RANDOM   HACKER          7902 17-NOV-05       1800
        40
SQL>     Cheers, APC

Convert an Object into a String

Good day to everyone. I am trying to do a little coding in which a user will input his desired username. I want to check the database if the desired username of the current user is existing, so there'll be no duplication. I'm using JPA for the model and JSF for the controller and view.
Here's my Model.
@Entity
public class WebUser implements Serializable {
    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;
    private String lastName;
    private String firstName;
    private String middleName;
    private String username;
    private String password;
    public Long getId() {
        return id;
    public void setId(Long id) {
        this.id = id;
    @Override
    public int hashCode() {
        int hash = 0;
        hash += (id != null ? id.hashCode() : 0);
        return hash;
    @Override
    public boolean equals(Object object) {
        // TODO: Warning - this method won't work in the case the id fields are not set
        if (!(object instanceof WebUser)) {
            return false;
        WebUser other = (WebUser) object;
        if ((this.id == null && other.id != null) || (this.id != null && !this.id.equals(other.id))) {
            return false;
        return true;
    @Override
    public String toString() {
        return "web.model.WebUser[id=" + id + "]";
    public String getLastName() {
        return lastName;
    public void setLastName(String lastName) {
        this.lastName = lastName;
    public String getFirstName() {
        return firstName;
    public void setFirstName(String firstName) {
        this.firstName = firstName;
    public String getMiddleName() {
        return middleName;
    public void setMiddleName(String middleName) {
        this.middleName = middleName;
    public String getUsername() {
        return username;
    public void setUsername(String username) {
        this.username = username;
    public String getPassword() {
        return password;
    public void setPassword(String password) {
        this.password = password;
}The controller and jsp are auto-generated from Netbeans. My question is, how will I convert the 'WebUser' object into a String so I can compare the value from input text to the value in the database?
Here is my validation method inside WebUserController.java
public void validateUsername(FacesContext facesContext, UIComponent component, Object value) throws ValidatorException {
        String newUsername = (String) value;
        System.out.println("new user name: " +newUsername);
        System.out.println("component: " +component);
        int webUserSize;
        StringBuffer sb = new StringBuffer();
        //webUsers.toString();
        if ((webUsers == null) || (webUsers != null)) {
            System.out.println("web users null");
            List<WebUser> allWebUsers = getWebUsers();
            webUserSize = allWebUsers.size();
            System.out.println("all web users: " +allWebUsers);
            System.out.println("size " +webUserSize);
            for(int i=1; i<=webUserSize; ++i) {
                sb.append(allWebUsers);
                System.out.println("username: " +sb.append(allWebUsers));
        }Honestly I'm new to java and having a hard time with this one. Hope someone can help me. Thanks a lot.
I know my code is a mess. :(

Thanks for the help guys! I used the "unique constraint" annotation of JPA and my problem is solved.
Here's the code:
@Entity
@Table(
    name="WebUser",
    uniqueConstraints={@UniqueConstraint(columnNames={"username"})}
public class WebUser implements Serializable {
    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;
    private String lastName;
    private String firstName;
    private String middleName;
    private String username;
    private String password;
    public Long getId() {
        return id;
    public void setId(Long id) {
        this.id = id;
    @Override
    public int hashCode() {
        int hash = 0;
        hash += (id != null ? id.hashCode() : 0);
        return hash;
    @Override
    public boolean equals(Object object) {
        // TODO: Warning - this method won't work in the case the id fields are not set
        if (!(object instanceof WebUser)) {
            return false;
        WebUser other = (WebUser) object;
        if ((this.id == null && other.id != null) || (this.id != null && !this.id.equals(other.id))) {
            return false;
        return true;
    @Override
    public String toString() {
        //return "web.model.WebUser[id=" + id + "]";
        return "web.model.User[username=" + username +"]";
    public String getLastName() {
        return lastName;
    public void setLastName(String lastName) {
        this.lastName = lastName;
    public String getFirstName() {
        return firstName;
    public void setFirstName(String firstName) {
        this.firstName = firstName;
    public String getMiddleName() {
        return middleName;
    public void setMiddleName(String middleName) {
        this.middleName = middleName;
    public String getUsername() {
        return username;
    public void setUsername(String username) {
        this.username = username;
    public String getPassword() {
        return password;
    public void setPassword(String password) {
        this.password = password;
}Thanks again guys!

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@Sathyamoorthi
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subbareddy.p

Hi Bhasker,
thanks for u r reply. Here i attached screen shot of my server "data.result".
My proxy varaible contains
My object varaible "obj" contains
After parsing the result my arraycollection contains, (i mean after converting Object to Array to ArrayCollection) the below information. For information Pl find the attached arraycollection.png image. In the attached image my arraycollection name is "users".
Here i pasted the code that i used to convert "ObjectProxy" to "ArrayCollection"
var proxy:ObjectProxy = ObjectProxy(data.result);
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sss

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How do i convert an object into a string?

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