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package org.postgresql;
import java.lang.*;
import java.sql.*;
import java.util.*;
import org.postgresql.*;
import org.postgresql.util.*;
/**
* org.postgresql.Field is a class used to describe fields in a PostgreSQL
* ResultSet
*/
public class Field
{
private int length; // Internal Length of this field
private int oid; // OID of the type
private int mod; // type modifier of this field
private String name; // Name of this field
private Connection conn; // Connection Instantation
/**
* Construct a field based on the information fed to it.
*
* @param conn the connection this field came from
* @param name the name of the field
* @param oid the OID of the field
* @param len the length of the field
*/
public Field(Connection conn, String name, int oid, int length, int mod)
{
this.conn = conn;
this.name = name;
this.oid = oid;
this.length = length;
this.mod = mod;
}
/**
* Constructor without mod parameter.
*
* @param conn the connection this field came from
* @param name the name of the field
* @param oid the OID of the field
* @param len the length of the field
*/
public Field(Connection conn, String name, int oid, int length)
{
this(conn, name, oid, length, 0);
}
/**
* @return the oid of this Field's data type
*/
public int getOID()
{
return oid;
}
/**
* @return the mod of this Field's data type
*/
public int getMod()
{
return mod;
}
/**
* @return the name of this Field's data type
*/
public String getName()
{
return name;
}
/**
* @return the length of this Field's data type
*/
public int getLength()
{
return length;
}
/**
* We also need to get the PG type name as returned by the back end.
*
* @return the String representation of the PG type of this field
* @exception SQLException if a database access error occurs
*/
public String getPGType() throws SQLException
{
return conn.getPGType(oid);
}
/**
* We also need to get the java.sql.types type.
*
* @return the int representation of the java.sql.types type of this field
* @exception SQLException if a database access error occurs
*/
public int getSQLType() throws SQLException
{
return conn.getSQLType(oid);
}
}
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