# com.beasys.commerce.util Package

This package contains WLCS/WLPS utility classes.

## Interface Summary

Log |
PersistenceHelperPlugin | Interface for Persistence Helper Plugin A specific driver must be written for each type of persistence cache.
PoolMemberFactory |
Sequencer | This file contains an interface for a unique number sequencer.

## Class Summary

CacheMethod | Abstracts a key for caching Java method objects
ClassHelper | Helper methods for the Class class
CloneHelper | Helper for cloning.
CommandLineArgument | Representation of a command line argument.
CommandLineArgumentHelper | Convenience helper for handling command line arguments.
DefaultLog | Default log implementation, it goes to System.err.
DOMHelper |
ExpressionHelper | Helper class to handle dealing with Expression, Criteria, and Logical objects.
FixedResourceBundle | Loads a bundle only from a properties file, does not look for a class file first as in java.util.ResourceBundle.
GlobHelper | A utility class for doing DOS-style pattern matching (GLOBing).
JDBCFieldsHelper |
JdbcHelper |
JDBCSequencer | The JDBCSequencer class is a portable implementation for generating unique sequence numbers.
Logger | Logger singleton.
MessageCatalog | A message catalog is a collection of property files that store paired sets of keyed messages.
MethodCache |
MimeTypeHelper | Utility class to help with Mime Types.
NonCatalogLog | Generic class for logging to your server.
PersistenceHelper | Persistence Helper provides an optional, cross-platform optimization for dependent objects in the persistence cache.
PersistenceHelper.DefaultSmartCollectionReference |
PersistenceHelper.DefaultSmartEntityReference |
PersistenceHelper.DefaultSmartMapReference |
PersistenceHelperPluginFactory | Factory for PersistenceHelperPlugin instances.
Pool | A generic object pooling class.
ResultSetIterator | Implements the java.util.Iterator interface for a JDBC ResultSet.
SequencerFactory | This class implements the Singleton design pattern for obtaining database sequencers.
SerializableEnumeration | An implementation of the Enumeration interface which is Serializable.
ShowHTTPHeaders | A command-line utility to display open an URL and display the HTTP headers coming back from the server.
SoftHashMap | A map implemented using SoftReferences to store the values.
TypesHelper | A helper with constants for the various types and operators for configurable entity properties.
Validate |

## Exception Summary

ExpressionHelper.ParseException | Exception to report an error while parsing a query expression.