wt.rule.init
Interface InitRuleEvalService

All Known Implementing Classes:

InitRuleEvalServiceFwd, StandardInitRuleEvalService

public interface InitRuleEvalService

This provides APIs for evaluating INIT rules.

Supported API: false

Extendable: false

Method Summary

AttributeValues	getAttributeValues(Rule rule) Return the attribute values specification that results from parsing the rule.
Object	getValue(AlgoValue value, Object object, WTContainerRef container) Calculate the value using the specified algorithm and arguments.
Object	getValue(Attr attr, Object object) Get the value of the specified attribute from the specified object.
Object	getValue(String id, Object object, WTContainerRef container) Calculate the value for the attribute with the specified id for the specified object and container.

Method Detail

getAttributeValues

public AttributeValues getAttributeValues(Rule rule)
                                   throws WTException

Return the attribute values specification that results from parsing the rule.

Supported API: false

Parameters:

rule -

Returns:

AttributeValues

Throws:

WTException

getValue

public Object getValue(String id,
                       Object object,
                       WTContainerRef container)
                throws WTException

Calculate the value for the attribute with the specified id for the specified object and container.

The object argument may be a type identifier or a normal object. A type identifier is one of the following:

• Class
• TypeIdentifier
• String specifying the name of the type

If a type identifier is passed in, then the attribute value is calculated using default values for any attributes referenced by the INIT rule. Otherwise, attribute values from the object are used.

Supported API: false

Parameters:

id - the logical identifier of the attribute

object - the object to use for attribute references or a type identifier

container - the container to use for data lookups

Returns:

Object

Throws:

WTException

getValue

public Object getValue(AlgoValue value,
                       Object object,
                       WTContainerRef container)
                throws WTException

Calculate the value using the specified algorithm and arguments.

The object argument may be a type identifier or a normal object. A type identifier is one of the following:

• Class
• TypeIdentifier
• String specifying the name of the type

If a type identifier is passed in, then the attribute value is calculated using default values for any attributes referenced while computing the attribute value. Otherwise, attribute values from the object are used.

Supported API: false

Parameters:

value - the value to be calculated

object - the object to use for attribute references or a type identifier

container - the container to use for data lookups

Returns:

Object

Throws:

WTException

getValue

public Object getValue(Attr attr,
                       Object object)
                throws WTException

Get the value of the specified attribute from the specified object.

The object argument may be a type identifier or a normal object. A type identifier is one of the following:

• Class
• TypeIdentifier
• String specifying the name of the type

If a type identifier is passed in, then the default value for the attribute is returned. Otherwise, the value is obtained from the object.

Supported API: false

Parameters:

attr - the attribute to get

object - the object to get the value from or a type identifier

Returns:

Object

Throws:

WTException