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package postgresql.util;
import java.io.*;
import java.lang.*;
import java.sql.*;
import java.util.*;
/**
* postgresql.PG_Object is a class used to describe unknown types
* An unknown type is any type that is unknown by JDBC Standards
*
* <p>As of PostgreSQL 6.3, this allows user code to add their own
* handlers via a call to postgresql.Connection. These handlers
* must extend this class.
*/
public class PGobject implements Serializable,Cloneable
{
protected String type;
protected String value;
/**
* This is called by postgresql.Connection.getObject() to create the
* object.
*/
public PGobject()
{
}
/**
* This method sets the type of this object.
*
* <p>It should not be extended by subclasses, hence its final
*
* @param type a string describing the type of the object
*/
public final void setType(String type)
{
this.type = type;
}
/**
* This method sets the value of this object. It must be overidden.
*
* @param value a string representation of the value of the object
* @exception SQLException thrown if value is invalid for this type
*/
public void setValue(String value) throws SQLException
{
this.value = value;
}
/**
* As this cannot change during the life of the object, it's final.
* @return the type name of this object
*/
public final String getType()
{
return type;
}
/**
* This must be overidden, to return the value of the object, in the
* form required by postgresql.
* @return the value of this object
*/
public String getValue()
{
return value;
}
/**
* This must be overidden to allow comparisons of objects
* @param obj Object to compare with
* @return true if the two boxes are identical
*/
public boolean equals(Object obj)
{
if(obj instanceof PGobject)
return ((PGobject)obj).getValue().equals(getValue());
return false;
}
/**
* This must be overidden to allow the object to be cloned
*/
public Object clone()
{
PGobject obj = new PGobject();
obj.type=type;
obj.value=value;
return obj;
}
/**
* This is defined here, so user code need not overide it.
* @return the value of this object, in the syntax expected by postgresql
*/
public String toString()
{
return getValue();
}
}
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