org.apache.ode.bpel.runtime
Class ExprEvaluationContextImpl

java.lang.Object
  org.apache.ode.bpel.runtime.ExprEvaluationContextImpl

All Implemented Interfaces:

EvaluationContext

public class ExprEvaluationContextImpl
extends java.lang.Object
implements EvaluationContext

The context in which BPEL expressions are evaluated. This class is handed of the OExpression instances to provide access to variables, link statuses, and the like.

Constructor Summary

ExprEvaluationContextImpl(org.apache.ode.bpel.runtime.ScopeFrame scopeInstace, BpelRuntimeContext ntv)

ExprEvaluationContextImpl(org.apache.ode.bpel.runtime.ScopeFrame scopeInstnce, BpelRuntimeContext ntv, java.util.Map<OLink,java.lang.Boolean> linkVals)

ExprEvaluationContextImpl(org.apache.ode.bpel.runtime.ScopeFrame scopeInstace, BpelRuntimeContext ntv, org.w3c.dom.Node root)

Method Summary

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.
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.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

ExprEvaluationContextImpl

public ExprEvaluationContextImpl(org.apache.ode.bpel.runtime.ScopeFrame scopeInstace,
                                 BpelRuntimeContext ntv)

ExprEvaluationContextImpl

public ExprEvaluationContextImpl(org.apache.ode.bpel.runtime.ScopeFrame scopeInstace,
                                 BpelRuntimeContext ntv,
                                 org.w3c.dom.Node root)

ExprEvaluationContextImpl

public ExprEvaluationContextImpl(org.apache.ode.bpel.runtime.ScopeFrame scopeInstnce,
                                 BpelRuntimeContext ntv,
                                 java.util.Map<OLink,java.lang.Boolean> linkVals)

Method Detail

readVariable

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

Description copied from interface: EvaluationContext

Read the value of a BPEL variable.

Specified by:

readVariable in interface EvaluationContext

Parameters:

variable - variable to read

part - the part (or null)

Returns:

the value of the variable, wrapped in a Node

Throws:

FaultException

evaluateQuery

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

Description copied from interface: EvaluationContext

Evaluate a query expression.

Specified by:

evaluateQuery in interface EvaluationContext

Parameters:

root - the root context

expr - the query expression

Returns:

node returned by query

Throws:

FaultException

EvaluationException

readMessageProperty

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

Description copied from interface: EvaluationContext

Read the value of a BPEL property.

Specified by:

readMessageProperty in interface EvaluationContext

Parameters:

variable - variable containing property

property - property to read

Returns:

value of the property

Throws:

FaultException

isLinkActive

public boolean isLinkActive(OLink olink)
                     throws FaultException

Description copied from interface: EvaluationContext

Obtain the status of a control link.

Specified by:

isLinkActive in interface EvaluationContext

Parameters:

olink - link to check

Returns:

true if the link is active, false otherwise.

Throws:

FaultException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getRootNode

public org.w3c.dom.Node getRootNode()

Description copied from interface: EvaluationContext

Obtain the root node.

Specified by:

getRootNode in interface EvaluationContext

Returns:

root node

getPartData

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

Specified by:

getPartData in interface EvaluationContext

Throws:

FaultException

getProcessId

public java.lang.Long getProcessId()

Description copied from interface: EvaluationContext

Reads the current process instance id.

Specified by:

getProcessId in interface EvaluationContext

Returns:

instance id

narrowTypes

public boolean narrowTypes()

Description copied from interface: EvaluationContext

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

Specified by:

narrowTypes in interface EvaluationContext

getBaseResourceURI

public java.net.URI getBaseResourceURI()

Description copied from interface: EvaluationContext

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

Specified by:

getBaseResourceURI in interface EvaluationContext

Returns:

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

getPropertyValue

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

Description copied from interface: EvaluationContext

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

Specified by:

getPropertyValue in interface EvaluationContext

Returns:

propertyValue - the value corresponding to the process property name.

getProcessQName

public javax.xml.namespace.QName getProcessQName()

Description copied from interface: EvaluationContext

Reads the current process's name.

Specified by:

getProcessQName in interface EvaluationContext

Returns:

process name