Package org.apache.openjpa.lib.util

General Utilities

Interface Summary

Interface	Description
Clearable	Generic interface for components that can be cleared so that helpers can treat them in a generic way.
Closeable	Generic interface for components that can be closed so that helpers can treate them in a generic way.
EventManager	Basic event manager interface.
ReferenceMap	A Map type that can hold its keys, values, or both with weak or soft references.
SizedMap	A Map type that maintains a maximum size, automatically removing entries when the maximum is exceeded.

Class Summary

Class	Description
Base16Encoder	Base 16 encoder.
Bytes	This class came from the Apache Commons Id sandbox project in support of the UUIDGenerator implementation.
ClassUtil	Various helper methods to deal with Classes
CodeFormat	Encapsulates some common Java source code formatting options.
Files	Utility operations on files.
FormatPreservingProperties	A specialization of Properties that stores its contents in the same order and with the same formatting as was used to read the contents from an input stream.
J2DoPrivHelper	Helper class to obtain the Privilege(Exception)Action object to perform Java 2 doPrivilege security sensitive function call in the following methods: AccessibleObject.setAccessible Class.forName Class.getClassLoader Class.getDeclaredField Class.getDeclaredFields Class.getDeclaredMethod Class.getDeclaredMethods Class.getProtectionDomain Class.getResource Class.newInstance ClassLoader.getParent ClassLoader.getResource ClassLoader.getResources ClassLoader.getSystemClassLoader File.deleteOnExit File.delete File.exists File.getAbsoluteFile File.getAbsolutePath File.getCanonicalPath File.listFiles File.length File.isDirectory File.mkdirs File.renameTo File.toURL FileInputStream new FileOutputStream new System.getProperties InetAddress.getByName MultiClassLoader new ServerSocket new Socket new Socket.accept System.getProperty Thread.getContextClassLoader Thread.setContextClassLoader Thread new TemporaryClassLoader new URL.openStream URLConnection.getContent ZipFile new AnnotatedElement.getAnnotations AnnotatedElement.getDeclaredAnnotations AnnotatedElement.isAnnotationPresent jakarta.validation.Validator.validate jakarta.validation.Validation.buildDefaultValidatorFactory If these methods are used, the following sample usage patterns should be followed to ensure proper privilege is granted:
JavaVersions	Utilities for dealing with different Java specification versions.
Localizer	The Localizer provides convenient access to localized strings.
Localizer.Message	A Message can provide a localized message via the Localizer.Message.getMessage() method call, and can also provide the original key, package, and substitution array that were used to assemble the message.
LRUMap	Extension of the commons LRUMap that can change its maximum size.
MultiClassLoader	Class loader type that can be configured to delegate to multiple internal class loaders.
Options	A specialization of the Properties map type with the added abilities to read application options from the command line and to use bean patterns to set an object's properties via command-line the stored mappings.
OrderedMap<K,V>	A Map with predictable iteration order.
ParameterTemplate	A template that allows parameter substitutions.
ReferenceHashMap	Map in which the key, value, or both may be weak/soft references.
ReferenceHashSet	A set whose values may be stored as weak or soft references.
Services	Utility classes to locate services, as defined in the Jar File Specification.
SimpleRegex	Allows for simple regex style testing of strings.
StringDistance	Utilities for calculating string distance.
StringUtil
TemporaryClassLoader	ClassLoader implementation that allows classes to be temporarily loaded and then thrown away.
TimestampHelper	Helper base class attempts to return java.sql.Timestamp object with nanosecond precision.
TypedProperties	A specialization of the Properties map type with added convenience methods to retrieve and set options as primitive values.
UUIDGenerator	UUID value generator.

Enum Summary

Enum	Description
JavaVendors	Utilities for dealing with different Java vendors.

Exception Summary

Exception	Description
FormatPreservingProperties.DuplicateKeyException
ParseException	Exception type for parse errors.

Annotation Types Summary

Annotation Type	Description
Reflectable	Annotates a getter method or field so reflection utility to control whether the annotated member is recorded during scanning for bean-style method or field.