org.apache.commons.beanutils

Class JDBCDynaClass

abstract class JDBCDynaClass extends Object implements DynaClass, 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 booleanlowerCase

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 MappropertiesMap

The set of dynamic properties that are part of this DynaClass, keyed by the property name.

Method Summary
protected DynaPropertycreateDynaProperty(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.

DynaPropertygetDynaProperty(String name)

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

StringgetName()

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 voidintrospect(ResultSet resultSet)

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

protected ClassloadClass(String className)

Loads and returns the Class of the given name.

DynaBeannewInstance()

Instantiate and return a new DynaBean instance, associated with this DynaClass.

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 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.

Method Detail

createDynaProperty

protected DynaProperty createDynaProperty(ResultSetMetaData metadata, int i)

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

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.

getDynaProperty

public DynaProperty getDynaProperty(String name)

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

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

Throws: IllegalArgumentException if no property name is specified

getName

public 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.

introspect

protected void introspect(ResultSet resultSet)

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: SQLException if an error is encountered processing the result set metadata

loadClass

protected Class loadClass(String className)

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: SQLException if an exception was thrown trying to load the specified class

newInstance

public DynaBean newInstance()

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

Throws: IllegalAccessException if the Class or the appropriate constructor is not accessible InstantiationException if this Class represents an abstract class, an array class, a primitive type, or void; or if instantiation fails for some other reason

Copyright (c) 2001-2004 - Apache Software Foundation