org.settings4j.connector

Class AbstractPropertyConnector

java.lang.Object

org.settings4j.connector.AbstractConnector

org.settings4j.connector.AbstractPropertyConnector

All Implemented Interfaces:

Connector

Direct Known Subclasses:

ConfigurationToConnectorAdapter, EnvironmentConnector, PreferencesConnector, PropertyFileConnector, SystemPropertyConnector

public abstract class AbstractPropertyConnector
extends AbstractConnector

Basic Implementation of Connectors whiche are Property-related.

Only #getProperty(String, String) must be implemented. Example implementations are PropertyFileConnector or SystemPropertyConnector.

Author:

Harald.Brabenetz

Constructor Summary

Constructors

Constructor and Description
AbstractPropertyConnector()

Method Summary

Methods

Modifier and Type	Method and Description
byte[]	getContent(String key) return a byte[]-Value for the given key.
Object	getObject(String key) return a Object-Value for the given key.
protected abstract String	getProperty(String key, String defaultValue) Very similar to System.getProperty except that the SecurityException is hidden.
String	getString(String key) return a String-Value for the given key.

Methods inherited from class org.settings4j.connector.AbstractConnector

addConnector, getConnectors, getContentResolver, getName, getObjectResolver, init, setContentResolver, setName, setObjectResolver

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractPropertyConnector

public AbstractPropertyConnector()

Method Detail

getContent

public byte[] getContent(String key)

return a byte[]-Value for the given key.

The concrete implementation can use the ContentResolver if required

Parameters:

key - the Key for the configuration-property. e.g.: "com/mycompany/myapp/myParameterKey"

Returns:

the byte[]-Value for the given key

getObject

public Object getObject(String key)

return a Object-Value for the given key.

The concrete implementation can use the ObjectResolver if required

Parameters:

key - the Key for the configuration-property. e.g.: "com/mycompany/myapp/myParameterKey"

Returns:

the Object-Value for the given key, or null if no value where found.

getString

public String getString(String key)

return a String-Value for the given key.

Parameters:

key - the Key for the configuration-property. e.g.: "com/mycompany/myapp/myParameterKey"

Returns:

the String-Value for the given key

getProperty

protected abstract String getProperty(String key,
                 String defaultValue)

Very similar to System.getProperty except that the SecurityException is hidden.

Parameters:

key - The key to search for.

defaultValue - The default value to return.

Returns:

the string value of the system property, or the default value if there is no property with that key.