LanguageDbPropertySetter (Apache Derby V10.14 Internals)

java.lang.Object
- org.apache.derby.impl.sql.LanguageDbPropertySetter

All Implemented Interfaces:

PropertySetCallback
```
public class LanguageDbPropertySetter
extends java.lang.Object
implements PropertySetCallback
```
A class to handle setting language database properties

Constructor Summary

Constructors
Constructor Description

LanguageDbPropertySetter()

Constructors
Constructor	Description
`LanguageDbPropertySetter()`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Serviceable`	`apply(java.lang.String key, java.io.Serializable value, java.util.Dictionary p)`	Apply a property change.
`private static Context`	`getContext(java.lang.String contextID)`	Privileged lookup of a Context.
`void`	`init(boolean dbOnly, java.util.Dictionary p)`	Initialize the properties for this callback.
`java.io.Serializable`	`map(java.lang.String key, java.io.Serializable value, java.util.Dictionary p)`	Map a proposed new value for a property to an official value.
`boolean`	`validate(java.lang.String key, java.io.Serializable value, java.util.Dictionary p)`	Validate a property change.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - LanguageDbPropertySetter
```
public LanguageDbPropertySetter()
```
- Method Detail
  - init
```
public void init(boolean dbOnly,
                 java.util.Dictionary p)
```
    Description copied from interface: PropertySetCallback
    
    Initialize the properties for this callback. Called when addPropertySetNotification() is called with a non-null transaction controller. This allows code to set read its initial property values at boot time.
    Code within an init() method should use the 3 argument PropertyUtil method getPropertyFromSet() to obtain a property's value.
    
    Specified by:
    
    init in interface PropertySetCallback
    
    Parameters:
    
    dbOnly - true if only per-database properties are to be looked at
    
    p - the complete set of per-database properties.
  - validate
```
public boolean validate(java.lang.String key,
                        java.io.Serializable value,
                        java.util.Dictionary p)
                 throws StandardException
```
    Description copied from interface: PropertySetCallback
    
    Validate a property change.
    
    Specified by:
    
    validate in interface PropertySetCallback
    
    Parameters:
    
    key - Property key for the property being set
    
    value - proposed new value for the property being set or null if the property is being dropped.
    
    p - Property set before the change. SettingProperty may read but must never change p.
    
    Returns:
    
    true if this object was interested in this property, false otherwise.
    
    Throws:
    
    StandardException - Thrown on error.
  - apply
```
public Serviceable apply(java.lang.String key,
                         java.io.Serializable value,
                         java.util.Dictionary p)
```
    Description copied from interface: PropertySetCallback
    
    Apply a property change. Will only be called after validate has been called and only if validate returned true. If this method is called then the new value is the value to be used, ie. the property is not set in the overriding JVM system set.
    
    Specified by:
    
    apply in interface PropertySetCallback
    
    Parameters:
    
    key - Property key for the property being set
    
    value - proposed new value for the property being set or null if the property is being dropped.
    
    p - Property set before the change. SettingProperty may read but must never change p.
    
    Returns:
    
    post commit work for the property change.
  - map
```
public java.io.Serializable map(java.lang.String key,
                                java.io.Serializable value,
                                java.util.Dictionary p)
```
    Description copied from interface: PropertySetCallback
    
    Map a proposed new value for a property to an official value. Will only be called after apply() has been called.
    
    Specified by:
    
    map in interface PropertySetCallback
    
    Parameters:
    
    key - Property key for the property being set
    
    value - proposed new value for the property being set or null if the property is being dropped.
    
    p - Property set before the change. SettingProperty may read but must never change p.
    
    Returns:
    
    new value for the change
  - getContext
```
private static Context getContext(java.lang.String contextID)
```
    Privileged lookup of a Context. Must be private so that user code can't call this entry point.

Class LanguageDbPropertySetter

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

LanguageDbPropertySetter

Method Detail

init

validate

apply

map

getContext