org.apache.ode.bpel.explang

Interface EvaluationContext

public interface EvaluationContext

Context for evaluating expressions. Implementations of the ExpressionLanguageRuntime interface use this interface to access BPEL variables, property sets and link statuses.

Method Summary

Modifier and Type	Method and Description
org.w3c.dom.Node	evaluateQuery(org.w3c.dom.Node root, OExpression expr) Evaluate a query expression.
java.net.URI	getBaseResourceURI() Retrieves the base URI that the BPEL Process execution contextis running relative to.
java.util.Date	getCurrentEventDateTime()
org.w3c.dom.Node	getPartData(org.w3c.dom.Element message, OMessageVarType.Part part)
java.lang.Long	getProcessId() Reads the current process instance id.
javax.xml.namespace.QName	getProcessQName() Reads the current process's name.
org.w3c.dom.Node	getPropertyValue(javax.xml.namespace.QName propertyName) Retrieves the property value that has been defined for this BPEL Process type.
org.w3c.dom.Node	getRootNode() Obtain the root node.
boolean	isLinkActive(OLink olink) Obtain the status of a control link.
boolean	narrowTypes() Indicates whether simple types should be narrowed to a Java type when using this evaluation context.
java.lang.String	readMessageProperty(OScope.Variable variable, OProcess.OProperty property) Read the value of a BPEL property.
org.w3c.dom.Node	readVariable(OScope.Variable variable, OMessageVarType.Part part) Read the value of a BPEL variable.

Method Detail

readVariable

org.w3c.dom.Node readVariable(OScope.Variable variable,
                              OMessageVarType.Part part)
                       throws FaultException

Read the value of a BPEL variable.

Parameters:

variable - variable to read

part - the part (or null)

Returns:

the value of the variable, wrapped in a Node

Throws:

FaultException

getPartData

org.w3c.dom.Node getPartData(org.w3c.dom.Element message,
                             OMessageVarType.Part part)
                      throws FaultException

Throws:

FaultException

readMessageProperty

java.lang.String readMessageProperty(OScope.Variable variable,
                                     OProcess.OProperty property)
                              throws FaultException

Read the value of a BPEL property.

Parameters:

variable - variable containing property

property - property to read

Returns:

value of the property

Throws:

FaultException

isLinkActive

boolean isLinkActive(OLink olink)
              throws FaultException

Obtain the status of a control link.

Parameters:

olink - link to check

Returns:

true if the link is active, false otherwise.

Throws:

FaultException

getRootNode

org.w3c.dom.Node getRootNode()

Obtain the root node.

Returns:

root node

evaluateQuery

org.w3c.dom.Node evaluateQuery(org.w3c.dom.Node root,
                               OExpression expr)
                        throws FaultException,
                               EvaluationException

Evaluate a query expression.

Parameters:

root - the root context

expr - the query expression

Returns:

node returned by query

Throws:

FaultException

EvaluationException

getProcessId

java.lang.Long getProcessId()

Reads the current process instance id.

Returns:

instance id

getProcessQName

javax.xml.namespace.QName getProcessQName()

Reads the current process's name.

Returns:

process name

narrowTypes

boolean narrowTypes()

Indicates whether simple types should be narrowed to a Java type when using this evaluation context.

getBaseResourceURI

java.net.URI getBaseResourceURI()

Retrieves the base URI that the BPEL Process execution contextis running relative to.

Returns:

URI - the URI representing the absolute physical file path location that this process is defined within.

getPropertyValue

org.w3c.dom.Node getPropertyValue(javax.xml.namespace.QName propertyName)

Retrieves the property value that has been defined for this BPEL Process type.

Returns:

propertyValue - the value corresponding to the process property name.

getCurrentEventDateTime

java.util.Date getCurrentEventDateTime()