com.novell.nds.dirxml.driver.jdbc.db.lock

Class DBLock

java.lang.Object

com.novell.nds.dirxml.driver.jdbc.db.lock.DBLock

Direct Known Subclasses:

DBImmutableLock

public class DBLock
extends java.lang.Object

A mutable database resource lock. Consists of zero or more database-native SQL statements that lock a database resource.

Constructor Summary

Constructors

Constructor and Description
DBLock() Instantiates a database lock of zero statements.

Method Summary

Modifier and Type	Method and Description
void	addLockStatement(DBLockStatement stmt) Adds a statement to this lock.
java.util.List	getLockStatements() Retruns the SQL statements that comprise this lock.
boolean	shouldSubstitute() Method indicating to the caller whether this lock's statements should replace the ones that generated them.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DBLock

public DBLock()

Instantiates a database lock of zero statements.

Method Detail

addLockStatement

public void addLockStatement(DBLockStatement stmt)

Adds a statement to this lock.

Parameters:

stmt - may be null

getLockStatements

public java.util.List getLockStatements()

Retruns the SQL statements that comprise this lock.

Returns:

a list of zero or more DBLockStatement objects; will not return null

shouldSubstitute

public boolean shouldSubstitute()

Method indicating to the caller whether this lock's statements should replace the ones that generated them. Some of the locking statements that might be used prior to a SELECT statement, for instance, are effectively equivalent to the original.

This method is currently not invoked in any rt. Its use is reserved for future use.

Returns:

true if this lock's statements should be executed instead of the statements used to generate them; false otherwise