com.ibm.di.store
Class PropertyStore

java.lang.Object
  com.ibm.di.store.PropertyStore

public class PropertyStore
extends Object

Field Summary

static String

TABLE_PREFIX

Constructor Summary

PropertyStore(String identifier)
Initializes this object with a connection to the property store table named name.

Method Summary

void	closeStore() Closes all resources open by this object.
Object	getProperty(String key) Returns a value in the property store.
List<String>	keys() Returns an Enumeration of the keys in the store.
Object	removeProperty(String key) Removes a value in the property store.
Object	setProperty(String key, Object obj) Adds or updates a value in the property store.
void	updateProperty(String key, Object obj, boolean createIfMissing) Update property value.

Methods inherited from class java.lang.Object

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

Field Detail

TABLE_PREFIX

public static final String TABLE_PREFIX

See Also:

Constant Field Values

Constructor Detail

PropertyStore

public PropertyStore(String identifier)
              throws Exception

Initializes this object with a connection to the property store table named name.

Parameters:

identifier - The table name

Throws:

Exception

Method Detail

closeStore

public void closeStore()
                throws Exception

Closes all resources open by this object.

Throws:

Exception

setProperty

public Object setProperty(String key,
                          Object obj)
                   throws Exception

Adds or updates a value in the property store. If an update is performed the old value is returned.

Parameters:

key - The unique identifier

obj - The value

Returns:

The old value in case of an update

Throws:

Exception

updateProperty

public void updateProperty(String key,
                           Object obj,
                           boolean createIfMissing)
                    throws Exception

Update property value. Can create the property if missing. This method is supposed to be faster than setProperty(String, Object) in cases where it is much more likely for the property to exist.

Parameters:

key - The unique identifier

obj - The value

createIfMissing - If true and the property is missing, it will be created.

Throws:

Exception - If the value is null or an error occurs in the underlying store.

getProperty

public Object getProperty(String key)
                   throws Exception

Returns a value in the property store.

Parameters:

key - The unique identifier

Returns:

Value in the store or NULL if not found.

Throws:

Exception

removeProperty

public Object removeProperty(String key)
                      throws Exception

Removes a value in the property store.

Parameters:

key - The unique identifier to remove.

Returns:

The old value or NULL if key were not in the table

Throws:

Exception

keys

public List<String> keys()
                  throws Exception

Returns an Enumeration of the keys in the store.

Throws:

Exception