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org.apache.derby.iapi.util
Class DoubleProperties  

java.lang.Object
  java.util.Dictionary
      java.util.Hashtable
          java.util.Properties
              org.apache.derby.iapi.util.DoubleProperties

All Implemented Interfaces:

java.lang.Cloneable, java.util.Map, java.io.Serializable

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public final class DoubleProperties

extends java.util.Properties

A properties object that links two independent properties together. The read property set is always searched first, with the write property set being second. But any put() calls are always made directly to the write object. Only the put(), keys() and getProperty() methods are supported by this class.

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Nested Class Summary

 

Nested classes inherited from class java.util.Hashtable

 

Nested classes inherited from class java.util.Map

java.util.Map.Entry

 

Field Summary
private  java.util.Properties	read
private  java.util.Properties	write

 

Fields inherited from class java.util.Properties

defaults

 

Fields inherited from class java.util.Hashtable

 

Constructor Summary

DoubleProperties(java.util.Properties read, java.util.Properties write)

 

Method Summary
java.lang.String	getProperty(java.lang.String key)           Gets the property with the specified key in this property list.
java.lang.String	getProperty(java.lang.String key, java.lang.String defaultValue)           Gets the property with the specified key in this property list.
java.util.Enumeration	propertyNames()           Returns an enumeration of all keys in this property list, including the keys in the default property list.
java.lang.Object	put(java.lang.Object key, java.lang.Object value)           Puts the supplied value into the Map, mapped by the supplied key.

 

Methods inherited from class java.util.Properties

list, list, load, loadFromXML, save, setProperty, store, storeToXML, storeToXML

 

Methods inherited from class java.util.Hashtable

clear, clone, contains, containsKey, containsValue, elements, entrySet, equals, get, hashCode, isEmpty, keys, keySet, putAll, rehash, remove, size, toString, values

 

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

 

Field Detail

read

private final java.util.Properties read

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write

private final java.util.Properties write

Constructor Detail

DoubleProperties

public DoubleProperties(java.util.Properties read,
                        java.util.Properties write)

Method Detail

put

public java.lang.Object put(java.lang.Object key,
                            java.lang.Object value)

Description copied from class: java.util.Hashtable

Puts the supplied value into the Map, mapped by the supplied key. Neither parameter may be null. The value may be retrieved by any object which equals() this key.

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getProperty

public java.lang.String getProperty(java.lang.String key)

Description copied from class: java.util.Properties

Gets the property with the specified key in this property list. If the key is not found, the default property list is searched. If the property is not found in the default, null is returned.

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getProperty

public java.lang.String getProperty(java.lang.String key,
                                    java.lang.String defaultValue)

Description copied from class: java.util.Properties

Gets the property with the specified key in this property list. If the key is not found, the default property list is searched. If the property is not found in the default, the specified defaultValue is returned.

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propertyNames

public java.util.Enumeration propertyNames()

Description copied from class: java.util.Properties

Returns an enumeration of all keys in this property list, including the keys in the default property list.

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