Package uk.ac.starlink.table.jdbc
Class TerminalAuthenticator
- java.lang.Object
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- uk.ac.starlink.table.jdbc.TerminalAuthenticator
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- All Implemented Interfaces:
JDBCAuthenticator
public class TerminalAuthenticator extends java.lang.Object implements JDBCAuthenticator
Provides JDBC authentication using the terminal; assumes that someone is sitting at System.in.
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Constructor Summary
Constructors Constructor Description TerminalAuthenticator()
Constructs a new authenticator which uses System.err for prompting.TerminalAuthenticator(java.io.PrintStream promptStrm)
Constructs a new authenticator with a given stream to use for writing prompts.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.String[]
authenticate()
Obtains username and password.java.lang.String
readPassword()
Prompts to the prompt stream and reads the password from standard input.java.lang.String
readUser()
Prompts to the prompt stream and reads the user name from standard input.
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Constructor Detail
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TerminalAuthenticator
public TerminalAuthenticator(java.io.PrintStream promptStrm)
Constructs a new authenticator with a given stream to use for writing prompts.- Parameters:
promptStrm
- output stream for prompting
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TerminalAuthenticator
public TerminalAuthenticator()
Constructs a new authenticator which uses System.err for prompting.
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Method Detail
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authenticate
public java.lang.String[] authenticate() throws java.io.IOException
Description copied from interface:JDBCAuthenticator
Obtains username and password. The return value is a two-element array containing the username and password to be used, in that order. Either or both of these may be null.- Specified by:
authenticate
in interfaceJDBCAuthenticator
- Returns:
- String[]{username,password}
- Throws:
java.io.IOException
- if there is some error
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readUser
public java.lang.String readUser() throws java.io.IOException
Prompts to the prompt stream and reads the user name from standard input.- Returns:
- user name obtained from user
- Throws:
java.io.IOException
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readPassword
public java.lang.String readPassword() throws java.io.IOException
Prompts to the prompt stream and reads the password from standard input.- Returns:
- password obtained from user
- Throws:
java.io.IOException
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