com.interface21.web.bind
Class ServletRequestParameterPropertyValues

java.lang.Object
  |
  +--com.interface21.web.bind.ServletRequestParameterPropertyValues

All Implemented Interfaces:

PropertyValues

public class ServletRequestParameterPropertyValues

extends java.lang.Object

implements PropertyValues

PropertyValues implementation created from parameters in a ServletRequest. Looks for all property values beginning with a certain prefix and prefix separator. This class is immutable once initialized.

Version:

$Id: ServletRequestParameterPropertyValues.java,v 1.2 2003/05/28 16:39:15 jhoeller Exp $

Author:

Rod Johnson

Field Summary

static java.lang.String	DEFAULT_PREFIX_SEPARATOR Default prefix separator
protected org.apache.commons.logging.Log	logger

Constructor Summary

ServletRequestParameterPropertyValues(javax.servlet.ServletRequest request)
Creates new ServletRequestPropertyValues using no prefix (and hence, no prefix separator)

ServletRequestParameterPropertyValues(javax.servlet.ServletRequest request, java.lang.String prefix)
Creates new ServletRequestPropertyValues using the default prefix separator and the given prefix (the underscore character, _).

ServletRequestParameterPropertyValues(javax.servlet.ServletRequest request, java.lang.String prefix, java.lang.String prefixSeparator)
Creates new ServletRequestPropertyValues supplying both prefix and prefixSeparator

Method Summary

PropertyValues	changesSince(PropertyValues old) Return the changes since the previous PropertyValues.
boolean	contains(java.lang.String propertyName) Is there a propertyValue object for this property?
PropertyValue	getPropertyValue(java.lang.String propertyName) Return the property value with the given name
PropertyValue[]	getPropertyValues() Return an array of the PropertyValue objects held in this object.

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected final org.apache.commons.logging.Log logger

DEFAULT_PREFIX_SEPARATOR

public static final java.lang.String DEFAULT_PREFIX_SEPARATOR

Default prefix separator

Constructor Detail

ServletRequestParameterPropertyValues

public ServletRequestParameterPropertyValues(javax.servlet.ServletRequest request,
                                             java.lang.String prefix)

Creates new ServletRequestPropertyValues using the default prefix separator and the given prefix (the underscore character, _).

Parameters:

request - HTTP Request

prefix - prefix for properties

ServletRequestParameterPropertyValues

public ServletRequestParameterPropertyValues(javax.servlet.ServletRequest request)

Creates new ServletRequestPropertyValues using no prefix (and hence, no prefix separator)

Parameters:

request - HTTP Request

ServletRequestParameterPropertyValues

public ServletRequestParameterPropertyValues(javax.servlet.ServletRequest request,
                                             java.lang.String prefix,
                                             java.lang.String prefixSeparator)

Creates new ServletRequestPropertyValues supplying both prefix and prefixSeparator

Parameters:

request - HTTP Request

prefix - prefix for properties

prefixSeparator - Separator delimiting prefix (e.g. user) from property name (e.g. age) to build a request parameter name such as user_age

Method Detail

getPropertyValues

public PropertyValue[] getPropertyValues()

Return an array of the PropertyValue objects held in this object.

Specified by:

getPropertyValues in interface PropertyValues

Returns:

an array of the PropertyValue objects held in this object.

contains

public boolean contains(java.lang.String propertyName)

Is there a propertyValue object for this property?

Specified by:

contains in interface PropertyValues

Parameters:

propertyName - name of the property we're interested in

Returns:

whether there is a propertyValue object for this property?

getPropertyValue

public PropertyValue getPropertyValue(java.lang.String propertyName)

Description copied from interface: PropertyValues

Return the property value with the given name

Specified by:

getPropertyValue in interface PropertyValues

Following copied from interface: com.interface21.beans.PropertyValues

Parameters:

propertyName - name to search for

Returns:

pv or null

changesSince

public PropertyValues changesSince(PropertyValues old)

Description copied from interface: PropertyValues

Return the changes since the previous PropertyValues. Subclasses should also override equals.

Specified by:

changesSince in interface PropertyValues

Following copied from interface: com.interface21.beans.PropertyValues

Parameters:

old - old property values

Returns:

PropertyValues updated or new properties. Return the empty PropertyValues if there are no changes.