org.apache.commons.beanutils
Class JDBCDynaClass

java.lang.Object
  |
  +--org.apache.commons.beanutils.JDBCDynaClass

All Implemented Interfaces:

DynaClass, java.io.Serializable

Direct Known Subclasses:

ResultSetDynaClass, RowSetDynaClass

abstract class JDBCDynaClass

extends java.lang.Object

implements DynaClass, java.io.Serializable

Provides common logic for JDBC implementations of DynaClass.

Version:

$Revision: 1.4 $ $Date: 2004/02/28 13:18:33 $

Author:

Craig R. McClanahan, George Franciscus

Field Summary

protected boolean	lowerCase Flag defining whether column names should be lower cased when converted to property names.
protected DynaProperty[]	properties The set of dynamic properties that are part of this DynaClass.
protected java.util.Map	propertiesMap The set of dynamic properties that are part of this DynaClass, keyed by the property name.

Constructor Summary

(package private)

JDBCDynaClass()

Method Summary

protected DynaProperty	createDynaProperty(java.sql.ResultSetMetaData metadata, int i) Factory method to create a new DynaProperty for the given index into the result set metadata.
DynaProperty[]	getDynaProperties() Return an array of ProperyDescriptors for the properties currently defined in this DynaClass.
DynaProperty	getDynaProperty(java.lang.String name) Return a property descriptor for the specified property, if it exists; otherwise, return null.
java.lang.String	getName() Return the name of this DynaClass (analogous to the getName() method of java.lang.ClassDynaClass implementation class to support different dynamic classes, with different sets of properties.
protected void	introspect(java.sql.ResultSet resultSet) Introspect the metadata associated with our result set, and populate the properties and propertiesMap instance variables.
protected java.lang.Class	loadClass(java.lang.String className) Loads and returns the Class of the given name.
DynaBean	newInstance() Instantiate and return a new DynaBean instance, associated with this DynaClass.

Methods inherited from class java.lang.Object

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

Field Detail

lowerCase

protected boolean lowerCase

Flag defining whether column names should be lower cased when converted to property names.

properties

protected DynaProperty[] properties

The set of dynamic properties that are part of this DynaClass.

propertiesMap

protected java.util.Map propertiesMap

The set of dynamic properties that are part of this DynaClass, keyed by the property name. Individual descriptor instances will be the same instances as those in the properties list.

Constructor Detail

JDBCDynaClass

JDBCDynaClass()

Method Detail

getName

public java.lang.String getName()

Return the name of this DynaClass (analogous to the getName() method of java.lang.ClassDynaClass implementation class to support different dynamic classes, with different sets of properties.

Specified by:

getName in interface DynaClass

getDynaProperty

public DynaProperty getDynaProperty(java.lang.String name)

Return a property descriptor for the specified property, if it exists; otherwise, return null.

Specified by:

getDynaProperty in interface DynaClass

Parameters:

name - Name of the dynamic property for which a descriptor is requested

Throws:

java.lang.IllegalArgumentException - if no property name is specified

getDynaProperties

public DynaProperty[] getDynaProperties()

Return an array of ProperyDescriptors for the properties currently defined in this DynaClass. If no properties are defined, a zero-length array will be returned.

Specified by:

getDynaProperties in interface DynaClass

newInstance

public DynaBean newInstance()
                     throws java.lang.IllegalAccessException,
                            java.lang.InstantiationException

Instantiate and return a new DynaBean instance, associated with this DynaClass. NOTE - This operation is not supported, and throws an exception.

Specified by:

newInstance in interface DynaClass

Throws:

java.lang.IllegalAccessException - if the Class or the appropriate constructor is not accessible

java.lang.InstantiationException - if this Class represents an abstract class, an array class, a primitive type, or void; or if instantiation fails for some other reason

loadClass

protected java.lang.Class loadClass(java.lang.String className)
                             throws java.sql.SQLException

Loads and returns the Class of the given name. By default, a load from the thread context class loader is attempted. If there is no such class loader, the class loader used to load this class will be utilized.

Throws:

java.sql.SQLException - if an exception was thrown trying to load the specified class

createDynaProperty

protected DynaProperty createDynaProperty(java.sql.ResultSetMetaData metadata,
                                          int i)
                                   throws java.sql.SQLException

Factory method to create a new DynaProperty for the given index into the result set metadata.

Parameters:

metadata - is the result set metadata

i - is the column index in the metadata

Returns:

the newly created DynaProperty instance

java.sql.SQLException

introspect

protected void introspect(java.sql.ResultSet resultSet)
                   throws java.sql.SQLException

Introspect the metadata associated with our result set, and populate the properties and propertiesMap instance variables.

Parameters:

resultSet - The resultSet whose metadata is to be introspected

Throws:

java.sql.SQLException - if an error is encountered processing the result set metadata