net.walend.property
Interface PropertySource

All Known Implementing Classes:

SimplePropertySource, SubsetPropertySource

public interface PropertySource

This interface defines a source of String Properties.

Since:

20001130

Author:

David Walend

Method Summary

java.lang.String	getPrefix() Return the String prefix for this PropertySource.
java.lang.String	getProperty(java.lang.String key) If the property isn't there, return null.
java.lang.String	getProperty(java.lang.String key, java.lang.String def) If the property isn't there, return default.
java.lang.String	getPropertySafely(java.lang.String key)
PropertySource	getSubsetPropertySource(java.lang.String keyPrefix) Return a PropertySource that contains the subset of these properties based on the prefix.
java.util.Iterator	propertyIterator() Return an iterator of property keys.
void	setProperty(java.lang.String key, java.lang.String value) Add or change the value of a property.

Method Detail

getProperty

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

If the property isn't there, return null.

getProperty

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

If the property isn't there, return default.

getPropertySafely

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

Throws:

PropertyException - if the property isn't there.

propertyIterator

public java.util.Iterator propertyIterator()

Return an iterator of property keys.

getPrefix

public java.lang.String getPrefix()

Return the String prefix for this PropertySource.

getSubsetPropertySource

public PropertySource getSubsetPropertySource(java.lang.String keyPrefix)

Return a PropertySource that contains the subset of these properties based on the prefix.

setProperty

public void setProperty(java.lang.String key,
                        java.lang.String value)

Add or change the value of a property.