Difference between revisions of "Attributes"
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| − | + | Attributes are used to store extended information per property. Attributes are objects managing additional fields for properties. As every {{UBIK}} object they are configurable according the set of their properties. Attributes are supported {{Version/ServerSince|2.5.0}}. | |
It is also possible to derive from the standard attributes in customizing and add additional attributes. | It is also possible to derive from the standard attributes in customizing and add additional attributes. | ||
Revision as of 11:27, 21 July 2015
Attributes are used to store extended information per property. Attributes are objects managing additional fields for properties. As every UBIK® object they are configurable according the set of their properties. Attributes are supported .
It is also possible to derive from the standard attributes in customizing and add additional attributes.
Contents
Configuration
UBIK® Attributes must be activated by defining the MetaAttribute property for a MetaProperty.
 | The new MetaAttribute Property does replace the NEDDS_VALIDATION property (Version 2.5)! |
UBIK® supports the following types of attributes
- Content Attributes
- Proxy Attributes
Standard properties of Attributes
| Property | Purpose |
|---|---|
| ValidationTimestamp | Time stamp the property value was validated |
| ValidationUser | Login validating the property value |
| Owner | UBIK® content object the attribute is associated to (the owner of the according property) |
| MetaProperty | MetaProperty of the related property |
Properties for Proxy Attributes
| Property | Purpose |
|---|---|
| InterfaceTimestamp | Time stamp the property value was ex- / imported |
Accessing the data
Attribute data must be accessed via their properties. Therefore, properties provide methods to read and write attribute values:
/// <summary>
/// Tries the get attribute value.
/// </summary>
/// <typeparam name="T">attribute value type</typeparam>
/// <param name="attributeName">Name of the attribute.</param>
/// <param name="value">The value.</param>
/// <returns>true as successfull</returns>
public virtual bool TryGetAttributeValue<T>(string attributeName, out T value)
/// <summary>
/// Tries the get attribute value.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="attributeID">The attribute identifier.</param>
/// <param name="value">The value.</param>
/// <returns>true as successfull</returns>
public virtual bool TryGetAttributeValue<T>(SystemStrings attributeID, out T value)
/// <summary>
/// Tries the set attribute value.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="attributeName">Name of the attribute.</param>
/// <param name="value">The value.</param>
/// <returns>true as successfull</returns>
public virtual bool TrySetAttributeValue<T>(string attributeName, T value)
/// <summary>
/// Tries the set attribute value.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="attributeID">The attribute identifier.</param>
/// <param name="value">The value.</param>
/// <returns>true as successfull</returns>
public virtual bool TrySetAttributeValue<T>(SystemStrings attributeID, T value)
/// Tries the get attribute value.
/// </summary>
/// <typeparam name="T">attribute value type</typeparam>
/// <param name="attributeName">Name of the attribute.</param>
/// <param name="value">The value.</param>
/// <returns>true as successfull</returns>
public virtual bool TryGetAttributeValue<T>(string attributeName, out T value)
/// <summary>
/// Tries the get attribute value.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="attributeID">The attribute identifier.</param>
/// <param name="value">The value.</param>
/// <returns>true as successfull</returns>
public virtual bool TryGetAttributeValue<T>(SystemStrings attributeID, out T value)
/// <summary>
/// Tries the set attribute value.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="attributeName">Name of the attribute.</param>
/// <param name="value">The value.</param>
/// <returns>true as successfull</returns>
public virtual bool TrySetAttributeValue<T>(string attributeName, T value)
/// <summary>
/// Tries the set attribute value.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="attributeID">The attribute identifier.</param>
/// <param name="value">The value.</param>
/// <returns>true as successfull</returns>
public virtual bool TrySetAttributeValue<T>(SystemStrings attributeID, T value)
