org.springframework.beans
Interface PropertyAccessor

All Known Subinterfaces:

BeanWrapper

All Known Implementing Classes:

BeanWrapperImpl

public interface PropertyAccessor

Common interface for classes that can access bean properties. Serves as base interface for BeanWrapper.

Since:

1.1

Author:

Juergen Hoeller

See Also:

BeanWrapper

Field Summary

static String	NESTED_PROPERTY_SEPARATOR Path separator for nested properties.
static char	NESTED_PROPERTY_SEPARATOR_CHAR
static String	PROPERTY_KEY_PREFIX Marker that indicates the start of a property key for an indexed or mapped property like "person.addresses[0]".
static char	PROPERTY_KEY_PREFIX_CHAR
static String	PROPERTY_KEY_SUFFIX Marker that indicates the end of a property key for an indexed or mapped property like "person.addresses[0]".
static char	PROPERTY_KEY_SUFFIX_CHAR

Method Summary

Object	getPropertyValue(String propertyName) Get the value of a property.
void	setPropertyValue(PropertyValue pv) Update a property value.
void	setPropertyValue(String propertyName, Object value) Set a property value.
void	setPropertyValues(Map map) Perform a bulk update from a Map.
void	setPropertyValues(PropertyValues pvs) The preferred way to perform a bulk update.
void	setPropertyValues(PropertyValues pvs, boolean ignoreUnknown) Perform a bulk update with full control over behavior.

Field Detail

NESTED_PROPERTY_SEPARATOR

static final String NESTED_PROPERTY_SEPARATOR

Path separator for nested properties. Follows normal Java conventions: getFoo().getBar() would be "foo.bar".

See Also:

Constant Field Values

NESTED_PROPERTY_SEPARATOR_CHAR

static final char NESTED_PROPERTY_SEPARATOR_CHAR

See Also:

Constant Field Values

PROPERTY_KEY_PREFIX

static final String PROPERTY_KEY_PREFIX

Marker that indicates the start of a property key for an indexed or mapped property like "person.addresses[0]".

See Also:

Constant Field Values

PROPERTY_KEY_PREFIX_CHAR

static final char PROPERTY_KEY_PREFIX_CHAR

See Also:

Constant Field Values

PROPERTY_KEY_SUFFIX

static final String PROPERTY_KEY_SUFFIX

Marker that indicates the end of a property key for an indexed or mapped property like "person.addresses[0]".

See Also:

Constant Field Values

PROPERTY_KEY_SUFFIX_CHAR

static final char PROPERTY_KEY_SUFFIX_CHAR

See Also:

Constant Field Values

Method Detail

getPropertyValue

Object getPropertyValue(String propertyName)
                        throws BeansException

Get the value of a property.

Parameters:

propertyName - name of the property to get the value of

Returns:

the value of the property

Throws:

FatalBeanException - if there is no such property, if the property isn't readable, or if the property getter throws an exception.

BeansException

setPropertyValue

void setPropertyValue(String propertyName,
                      Object value)
                      throws BeansException

Set a property value. This method is provided for convenience only. The setPropertyValue(PropertyValue) method is more powerful.

Parameters:

propertyName - name of the property to set value of

value - the new value

Throws:

FatalBeanException - if there is no such property, if the property isn't writable, or if the property setter throws an exception.

BeansException

setPropertyValue

void setPropertyValue(PropertyValue pv)
                      throws BeansException

Update a property value. This is the preferred way to update an individual property.

Parameters:

pv - object containing new property value

Throws:

FatalBeanException - if there is no such property, if the property isn't writable, or if the property setter throws an exception.

BeansException

setPropertyValues

void setPropertyValues(Map map)
                       throws BeansException

Perform a bulk update from a Map.

Bulk updates from PropertyValues are more powerful: This method is provided for convenience. Behaviour will be identical to that of the setPropertyValues(PropertyValues) method.

Parameters:

map - Map to take properties from. Contains property value objects, keyed by property name

Throws:

FatalBeanException - if there is no such property, if the property isn't writable, or if the property setter throws an exception.

BeansException

setPropertyValues

void setPropertyValues(PropertyValues pvs)
                       throws BeansException

The preferred way to perform a bulk update.

Note that performing a bulk update differs from performing a single update, in that an implementation of this class will continue to update properties if a recoverable error (such as a type mismatch, but not an invalid field name or the like) is encountered, throwing a PropertyAccessExceptionsException containing all the individual errors. This exception can be examined later to see all binding errors. Properties that were successfully updated stay changed.

Does not allow unknown fields. Equivalent to setPropertyValues(pvs, false).

Parameters:

pvs - PropertyValues to set on the target object

Throws:

FatalBeanException - if there is no such property, if the property isn't writable, or if the property setter throws an exception.

BeansException

See Also:

setPropertyValues(PropertyValues, boolean)

setPropertyValues

void setPropertyValues(PropertyValues pvs,
                       boolean ignoreUnknown)
                       throws BeansException

Perform a bulk update with full control over behavior.

Note that performing a bulk update differs from performing a single update, in that an implementation of this class will continue to update properties if a recoverable error (such as a type mismatch, but not an invalid field name or the like) is encountered, throwing a PropertyAccessExceptionsException containing all the individual errors. This exception can be examined later to see all binding errors. Properties that were successfully updated stay changed.

Does not allow unknown fields.

Parameters:

pvs - PropertyValues to set on the target object

ignoreUnknown - should we ignore unknown values (not found in the bean)

Throws:

FatalBeanException - if there is no such property, if the property isn't writable, or if the property setter throws an exception.

BeansException