Java Doc for PersistentSet.java in  » Database-DBMS » db-derby-10.2 » org » apache » derby » iapi » services » property » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » db derby 10.2 » org.apache.derby.iapi.services.property 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


org.apache.derby.iapi.services.property.PersistentSet

PersistentSet
public interface PersistentSet (Code)




Method Summary
public  PropertiesgetProperties()
     Get properties that can be stored in a java.util.Properties object.

Get the sub-set of stored properties that can be stored in a java.util.Properties object.

public  SerializablegetProperty(String key)
     Gets a value for a stored property.
public  SerializablegetPropertyDefault(String key)
     Gets a default value for a stored property.
public  booleanpropertyDefaultIsVisible(String key)
     Return true if the default property is visible.
public  voidsetProperty(String key, Serializable value, boolean dbOnlyProperty)
     Sets the Serializable object associated with a property key.

See the discussion of getProperty().

The value stored may be a Formatable object or a Serializable object whose class name starts with java.*.

public  voidsetPropertyDefault(String key, Serializable value)
     Sets the Serializable object default value associated with a property key.

See the discussion of getProperty().

The value stored may be a Formatable object or a Serializable object whose class name starts with java.*.




Method Detail
getProperties
public Properties getProperties() throws StandardException(Code)
Get properties that can be stored in a java.util.Properties object.

Get the sub-set of stored properties that can be stored in a java.util.Properties object. That is all the properties that have a value of type java.lang.String. Changes to this properties object are not reflected in any persisent storage.

Code must use the setProperty() method call. The sub-set of stored properties that can be stored in a java.util.Propertes object.
exception:
  StandardException - Standard exception policy.




getProperty
public Serializable getProperty(String key) throws StandardException(Code)
Gets a value for a stored property. The returned value will be:
  1. the de-serialized object associated with the key using setProperty if such a value is defined or
  2. the default de-serialized object associated with the key using setPropertyDefault if such a value is defined or
  3. null

The Store provides a transaction protected list of database properties. Higher levels of the system can store and retrieve these properties once Recovery has finished. Each property is a serializable object and is stored/retrieved using a String key.


Parameters:
  key - The "key" of the property that is being requested. object The requested object or null.
exception:
  StandardException - Standard exception policy.




getPropertyDefault
public Serializable getPropertyDefault(String key) throws StandardException(Code)
Gets a default value for a stored property. The returned value will be:
  1. the default de-serialized object associated with the key using setPropertyDefault if such a value is defined or
  2. null

The Store provides a transaction protected list of database properties. Higher levels of the system can store and retrieve these properties once Recovery has finished. Each property is a serializable object and is stored/retrieved using a String key.


Parameters:
  key - The "key" of the property that is being requested. object The requested object or null.
exception:
  StandardException - Standard exception policy.




propertyDefaultIsVisible
public boolean propertyDefaultIsVisible(String key) throws StandardException(Code)
Return true if the default property is visible. A default is visible as long as the property is not set.
Parameters:
  key - The "key" of the property that is being requested.
exception:
  StandardException - Standard exception policy.



setProperty
public void setProperty(String key, Serializable value, boolean dbOnlyProperty) throws StandardException(Code)
Sets the Serializable object associated with a property key.

See the discussion of getProperty().

The value stored may be a Formatable object or a Serializable object whose class name starts with java.*. This stops arbitary objects being stored in the database by class name, which will cause problems in obfuscated/non-obfuscated systems.
Parameters:
  key - The key used to lookup this property.
Parameters:
  value - The value to be associated with this key. If null, delete the property from the properties list.
Parameters:
  dbOnlyProperty - True if property is only ever searched for int the database properties.
exception:
  StandardException - Standard exception policy.




setPropertyDefault
public void setPropertyDefault(String key, Serializable value) throws StandardException(Code)
Sets the Serializable object default value associated with a property key.

See the discussion of getProperty().

The value stored may be a Formatable object or a Serializable object whose class name starts with java.*. This stops arbitary objects being stored in the database by class name, which will cause problems in obfuscated/non-obfuscated systems.
Parameters:
  key - The key used to lookup this propertyDefault.
Parameters:
  value - The default value to be associated with this key. If null, delete the property default from theproperties list.
exception:
  StandardException - Standard exception policy.




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