Package org.apache.tomcat.util.digester

Class SystemPropertySource

java.lang.Object

org.apache.tomcat.util.digester.SystemPropertySource

All Implemented Interfaces:

IntrospectionUtils.PropertySource, IntrospectionUtils.SecurePropertySource

public class SystemPropertySource
extends java.lang.Object
implements IntrospectionUtils.SecurePropertySource

A IntrospectionUtils.SecurePropertySource that uses system properties to resolve expressions. This property source is always active by default.

See Also:

Digester

Constructor Summary

Constructors

Constructor	Description
SystemPropertySource()	Constructs a new SystemPropertySource.

Method Summary

Modifier and Type	Method	Description
java.lang.String	getProperty(java.lang.String key)	Returns the value of the property with the specified key.
java.lang.String	getProperty(java.lang.String key, java.lang.ClassLoader classLoader)	Obtain a property value, checking that code associated with the provided class loader has permission to access the property.

Methods inherited from class java.lang.Object

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

Constructor Detail

SystemPropertySource

public SystemPropertySource()

Constructs a new SystemPropertySource.

Method Detail

getProperty

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

Description copied from interface: IntrospectionUtils.PropertySource

Returns the value of the property with the specified key.

Specified by:

getProperty in interface IntrospectionUtils.PropertySource

Parameters:

key - The property key

Returns:

the property value, or null if not found

getProperty

public java.lang.String getProperty(java.lang.String key,
                                    java.lang.ClassLoader classLoader)

Description copied from interface: IntrospectionUtils.SecurePropertySource

Obtain a property value, checking that code associated with the provided class loader has permission to access the property. If the classLoader is null or if classLoader does not implement PermissionCheck then the property value will be looked up without a call to PermissionCheck.check(java.security.Permission)

Specified by:

getProperty in interface IntrospectionUtils.SecurePropertySource

Parameters:

key - The key of the requested property

classLoader - The class loader associated with the code that trigger the property lookup

Returns:

The property value or null if it could not be found or if PermissionCheck.check(java.security.Permission) fails