org.tentackle.persist

Class StatementKey

java.lang.Object

org.tentackle.persist.StatementKey

public class StatementKey
extends Object

The statement key.

The key describes the statement within its usage scope, i.e. the StatementId and using class. The using class is necessary to locate the prepared statement because a select method may be implemented in a superclass of the actual class using the statement, which may result in a different SQL string.

As an alternative, a statement key may be expressed directly by an SQL string. In this case, no using class is required. Notice that ths SQL string must be exactly the string sent to the database backend! If there are different backends with different SQLs, each SQL must get its own statement key.

Author:

harald

Constructor Summary

Constructors

Constructor and Description
StatementKey(StatementId statementId, Class<?> usingClass) Creates the statement key.
StatementKey(String sql) Creates a statement key.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
String	getSql() Gets the SQL string.
StatementId	getStatementId() Gets the statement id.
Class<?>	getUsingClass() Gets the using class.
int	hashCode()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

StatementKey

public StatementKey(StatementId statementId,
                    Class<?> usingClass)

Creates the statement key.

Parameters:

statementId - the global statement id

usingClass - the using class

StatementKey

public StatementKey(String sql)

Creates a statement key.

Parameters:

sql - the SQL string

Method Detail

getStatementId

public StatementId getStatementId()

Gets the statement id.

Returns:

the id, null if SQL key

getUsingClass

public Class<?> getUsingClass()

Gets the using class.

Returns:

the class, null if SQL key

getSql

public String getSql()

Gets the SQL string.

Returns:

the SQL, null if statement id key

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object