The following example provides a sample sensor action schema that you can import into Oracle BPEL Designer. This schema is also relevant to custom data publishers.

<?xml version="1.0" encoding="utf-8"?>
<!-- 
  This schema contains the sensor definition. Sensors monitor data
  and execute callbacks appropriately.
  
  BPEL designer uses this file as a template to generate to generate
  SensorActionData.xsd. It does this by replacing special tags.
  Do not modify these special tags. For details, see comments in the file.
  The replacement is done using a simple text replacement, so the white
  spaces too should be preserved as indicated in comments.
-->
<xsd:schema blockDefault="#all" elementFormDefault="qualified"
            targetNamespace="http://xmlns.oracle.com/bpel/sensor"
            xmlns:xsd="http://www.w3.org/2001/XMLSchema"
            xmlns:sensor="http://xmlns.oracle.com/bpel/sensorDataPlaceHolder"
            xmlns:nxsd="http://xmlns.oracle.com/pcbpel/nxsd"
            xmlns:tns="http://xmlns.oracle.com/bpel/sensor"
            nxsd:encoding="UTF-8">

<!-- *** The following line is a place holder. Do not remove it. It must remain as
 is, including any whitespace.  If you change this, please let BAM sensor action
 developer know. -->
<!-- $importSensorVar --> 

  <xsd:simpleType name="tSensorActionPublishType">
    <xsd:annotation>
      <xsd:documentation>
        This enumeration lists the possibe publishing types for probes.
      </xsd:documentation>
    </xsd:annotation>
    <xsd:restriction base="xsd:string">
      <xsd:enumeration value="BpelReportsSchema"/>
      <xsd:enumeration value="JMSQueue"/>
      <xsd:enumeration value="JMSTopic"/>
      <xsd:enumeration value="BAM"/>
      <xsd:enumeration value="LogFile"/>
      <xsd:enumeration value="Custom"/>
    </xsd:restriction>
  </xsd:simpleType>
  
  <xsd:complexType name="tSensorActionProperty">
    <xsd:simpleContent>
      <xsd:extension base="xsd:string">
        <xsd:attribute name="name" use="required" type="xsd:string"/>
      </xsd:extension>
    </xsd:simpleContent>
  </xsd:complexType>

  <!-- 
    Attributes of a sensor action
  -->             
  <xsd:attributeGroup name="tSensorActionAttributes">
    <xsd:attribute name="name" type="xsd:string" use="optional"/>
    <xsd:attribute name="enabled" type="xsd:boolean" use="optional"
 default="true"/>
    <xsd:attribute name="filter" type="xsd:string"/>
    <xsd:attribute name="publishName" type="xsd:string" use="required"/>
    <xsd:attribute name="publishType" type="tns:tSensorActionPublishType"
 use="required"/>
    <!-- 
      the name of the JMS Queue/Topic or custom java API, ignored for other 
      publishTypes 
    -->
    <xsd:attribute name="publishTarget" type="xsd:string" use="optional"/>
  </xsd:attributeGroup>
  
  <!-- 
    The sensor action type. A sensor action consists:
    + unique name
    + effective date
    + expiration date - Optional. If not defined, the probe is active 
                        indefinitely.
    + filter (to potentially suppress data publishing even if a sensor marks
             it as interesting). - Optional. If not defined, no filter is 
             used.
    + publishName A name of a publisher
    + publishType What to do with the sensor data?
    + publishTarget Name of a JMS Queue/Topic or custom publisher.
    + potentially many sensors.
  -->
  <xsd:complexType name="tSensorAction">
    <xsd:sequence>
      <xsd:element name="sensorName" type="xsd:string" minOccurs="1"
 maxOccurs="unbounded"/>
      <xsd:element name="property" minOccurs="0" maxOccurs="unbounded"
 type="tns:tSensorActionProperty"/>
    </xsd:sequence>
    <xsd:attributeGroup ref="tns:tSensorActionAttributes"/>
  </xsd:complexType>
  
  <!--
    define a listing of sensor actions in a single document. It might be a good
    idea  to 
    have one sensor action list per business process. 
  -->
  <xsd:complexType name="tSensorActionList">
    <xsd:sequence>
      <xsd:element name="action" type="tns:tSensorAction" minOccurs="0"
 maxOccurs="unbounded"/>
    </xsd:sequence>
  </xsd:complexType>

  <xsd:simpleType name="tSensorKind">
    <xsd:restriction base="xsd:string">
      <xsd:enumeration value="fault"/>
      <xsd:enumeration value="variable"/>
      <xsd:enumeration value="activity"/>
      <xsd:enumeration value="service"/>
      <xsd:enumeration value="reference"/>
      <xsd:enumeration value="event"/>
    </xsd:restriction>
  </xsd:simpleType>

  <xsd:complexType name="tActivityConfig">
    <xsd:annotation>
      <xsd:documentation>
        The configuration part of an activity sensor comprises of a mandatory
 'evalTime' attribute
        and an optional list of variable configurations 
      </xsd:documentation>
    </xsd:annotation>
    <xsd:complexContent>
      <xsd:extension base="tns:tSensorConfig">
        <xsd:sequence>
          <xsd:element name="variable" type="tns:tActivityVariableConfig"
 maxOccurs="unbounded" minOccurs="0"/>
        </xsd:sequence>
        <xsd:attribute name="evalTime" type="xsd:string" use="required"/>
      </xsd:extension>
    </xsd:complexContent>      </xsd:complexType>

  <xsd:complexType name="tVariableConfig">
    <xsd:complexContent>
      <xsd:extension base="tns:tSensorConfig">
        <xsd:attribute name="outputDataType" use="required" type="xsd:string"/>
        <xsd:attribute name="outputNamespace" use="required" type="xsd:string"/>
        <xsd:attribute name="queryName" use="optional" type="xsd:string"/>
      </xsd:extension>
    </xsd:complexContent>
  </xsd:complexType>

  <xsd:complexType name="tActivityVariableConfig">
    <xsd:complexContent>
      <xsd:extension base="tns:tVariableConfig">
        <xsd:attribute name="target" type="xsd:string" use="required"/>
      </xsd:extension>
    </xsd:complexContent>
  </xsd:complexType>

  <xsd:complexType name="tFaultConfig">
    <xsd:complexContent>
      <xsd:extension base="tns:tSensorConfig"/>
    </xsd:complexContent>
  </xsd:complexType>
    
  <xsd:complexType name="tSensorConfig"/>
  
  <xsd:complexType name="tExpressionConfig">
    <xsd:complexContent>
      <xsd:extension base="tns:tVariableConfig">
        <xsd:attribute name="expression" use="required" type="xsd:string">
          <xsd:annotation>
            <xsd:documentation>
               expresion="$in/$payload/$partName/xpathExpression |
                          $in/$header/xpathExpression |
                          $in/$property/name |
                          $out/$payload/$partName/xpathExpression |
                          $out/$header/xpathExpression |
                          $out/$property/name |
                          $fault/$payload/$partName/xpathExpression |
                          $fault/$header/xpathExpression |
                          $fault/$property/name"
                          
                 Where
                    $in - The input/request message to the operation/event
                    $out - The output/Response message from the operation
                    $fault - The fault message from the operation
             </xsd:documentation>
          </xsd:annotation>
        </xsd:attribute>          </xsd:extension>
    </xsd:complexContent>
  </xsd:complexType>  
  
  <xsd:complexType name="tOperationConfig">
    <xsd:complexContent>
      <xsd:extension base="tns:tExpressionConfig">
        <xsd:attribute name="operation" use="required" type="xsd:string">
          <xsd:annotation>
            <xsd:documentation>
               The name of the operation in the service/reference on which the
 sensor is defined.
            </xsd:documentation>
          </xsd:annotation>  
        </xsd:attribute>
      </xsd:extension>
    </xsd:complexContent>
  </xsd:complexType> 
  
  <xsd:complexType name="tServiceConfig">
    <xsd:complexContent>
      <xsd:extension base="tns:tOperationConfig">
        <xsd:attribute name="service" use="required" type="xsd:string">
          <xsd:annotation>
            <xsd:documentation>
               The name of the service on which the sensor is defined.
            </xsd:documentation>
          </xsd:annotation>  
        </xsd:attribute>
      </xsd:extension>
    </xsd:complexContent>
  </xsd:complexType> 
 
  <xsd:complexType name="tReferenceConfig">
    <xsd:complexContent>
      <xsd:extension base="tns:tOperationConfig">
        <xsd:attribute name="reference" use="required" type="xsd:string">
          <xsd:annotation>
            <xsd:documentation>
               The name of the reference on which the sensor is defined.
            </xsd:documentation>
          </xsd:annotation>  
        </xsd:attribute>
      </xsd:extension>
    </xsd:complexContent>
  </xsd:complexType>
   
  <xsd:complexType name="tEventConfig">
    <xsd:complexContent>
      <xsd:extension base="tns:tExpressionConfig">               <xsd:attribute name="component" type="xsd:string" use="required">
          <xsd:annotation>
            <xsd:documentation>
               The name of the component which raises or receives the event.
            </xsd:documentation>
          </xsd:annotation>  
        </xsd:attribute>
        <xsd:attribute name="event" use="required" type="xsd:string">
          <xsd:annotation>
            <xsd:documentation>
               The name of the event that the component raises or receives.
            </xsd:documentation>
          </xsd:annotation>  
        </xsd:attribute>
        <xsd:attribute name="actionType" use="required">
          <xsd:simpleType>
            <xsd:restriction base="xsd:string">
              <xsd:enumeration value="Publish"/>
              <xsd:enumeration value="Subscribe"/>                       </xsd:restriction>
          </xsd:simpleType>  
        </xsd:attribute>             </xsd:extension>
    </xsd:complexContent>
  </xsd:complexType> 
 
  <xsd:complexType name="tSensor">
    <xsd:sequence>
      <xsd:element name="activityConfig" type="tns:tActivityConfig"
 minOccurs="0"/>
      <xsd:element name="faultConfig" type="tns:tFaultConfig" minOccurs="0"/>
      <xsd:element name="variableConfig" type="tns:tVariableConfig"
 minOccurs="0"/>
      <xsd:element name="serviceConfig" type="tns:tServiceConfig" minOccurs="0"/>
      <xsd:element name="referenceConfig" type="tns:tReferenceConfig"
 minOccurs="0"/>
      <xsd:element name="eventConfig" type="tns:tEventConfig" minOccurs="0"/>
    </xsd:sequence>
    <xsd:attribute name="sensorName" use="required" type="xsd:string"/>
    <xsd:attribute name="kind" use="required" type="tns:tSensorKind"/>
    <xsd:attribute name="target" use="required" type="xsd:string"/>
    <xsd:attribute name="filter" type="xsd:string"/>
  </xsd:complexType>

  <xsd:complexType name="tSensorList">
    <xsd:sequence>
      <xsd:element name="sensor" type="tns:tSensor" minOccurs="0"
 maxOccurs="unbounded"/>
    </xsd:sequence>
  </xsd:complexType>
  
  <xsd:complexType name="tProperty">
    <xsd:simpleContent>
      <xsd:extension base="xsd:string">
        <xsd:attribute name="name" use="required" type="xsd:string"/>
      </xsd:extension>
    </xsd:simpleContent>
  </xsd:complexType>
  
  <xsd:complexType name="tHeaderInfo">
    <xsd:sequence>
      <xsd:element name="applicationName" type="xsd:string"/>
      <xsd:element name="compositeName" type="xsd:string"/>
      <xsd:element name="compositeInstanceId" type="xsd:string"/>
      <xsd:element name="compositeRevision" type="xsd:string"/>
      <xsd:element name="compositeLabel" type="xsd:string"/>
      <xsd:element name="componentName" type="xsd:string"/>
      <xsd:element name="processName" type="xsd:string"/>
      <xsd:element name="processRevision" type="xsd:string"/>
      <xsd:element name="domain" type="xsd:string"/>
      <xsd:element name="instanceId" type="xsd:integer"/>
      <xsd:element name="midTierInstance" type="xsd:string"/>
      <xsd:element name="timestamp" type="xsd:dateTime"/>
      <xsd:element name="sensor" type="tns:tSensor"/>
      <xsd:element name="property" minOccurs="0" maxOccurs="unbounded"
 type="tns:tProperty"/>
    </xsd:sequence>
  </xsd:complexType>
  
  <xsd:complexType name="tSensorData">
      <xsd:sequence>
        <xsd:element name="activityData" type="tns:tActivityData" minOccurs="0"/>
      <xsd:element name="faultData" type="tns:tFaultData" minOccurs="0"/>
        <xsd:element name="variableData" type="tns:tVariableData" minOccurs="0"
 maxOccurs="unbounded"/>
        <xsd:element name="serviceData" type="tns:tServiceData" minOccurs="0"
 maxOccurs="unbounded"/>
        <xsd:element name="referenceData" type="tns:tReferenceData" minOccurs="0"
 maxOccurs="unbounded"/>
        <xsd:element name="eventData" type="tns:tEventData" minOccurs="0"
 maxOccurs="unbounded"/>
      </xsd:sequence>
  </xsd:complexType>

  <xsd:complexType name="tFaultData">
    <xsd:sequence>
      <xsd:element name="activityName" type="xsd:string"/>
      <xsd:element name="activityType" type="xsd:string"/>
      <xsd:element name="faultName" type="xsd:QName"/>
      <!-- *** The following line is a place holder. Do not remove it. It must
 remain as is, including any whitespace.  If you change this, please let BAM
 sensor action developer know. -->
      <xsd:element name="data" type="xsd:anyType" minOccurs="0"/> <!-- DO NOT
 MODIFY: fault data type -->
    </xsd:sequence>
  </xsd:complexType>
  
  
  <!--
   xml type that will be provided to sensors for variable Datas. Note the
      any element represents variable data.
   -->
  <xsd:complexType name="tVariableData">
    <xsd:sequence>
      <xsd:element name="dataType" type="xsd:integer"/>
      <!-- *** The following line is a place holder. Do not remove it. It must
 remain as is, including any whitespace.  If you change this, please let BAM
 sensor action developer know. -->
      <xsd:element name="data" type="xsd:anyType"/> <!-- DO NOT MODIFY: sensor
 variable data type -->
      <xsd:element name="queryName" type="xsd:string"/>
      <xsd:element name="target" type="xsd:string"/>
      <xsd:element name="updaterName" type="xsd:string" minOccurs="1"/>
      <xsd:element name="updaterType" type="xsd:string" minOccurs="1"/>
    </xsd:sequence>
  </xsd:complexType>
  
  <xsd:complexType name="tServiceData">
    <xsd:sequence>
      <xsd:element name="sensorName" type="xsd:string"/> 
      <xsd:element name="data" type="xsd:anyType"/>
      <xsd:element name="dataType" type="xsd:integer"/>
    </xsd:sequence>
  </xsd:complexType>
 
  <xsd:complexType name="tReferenceData">
    <xsd:sequence>
      <xsd:element name="sensorName" type="xsd:string"/>
      <xsd:element name="data" type="xsd:anyType"/>
      <xsd:element name="dataType" type="xsd:integer"/>
    </xsd:sequence>
  </xsd:complexType>
 
  <xsd:complexType name="tEventData">
    <xsd:sequence>
      <xsd:element name="sensorName" type="xsd:string"/>
      <xsd:element name="data" type="xsd:anyType"/>
      <xsd:element name="dataType" type="xsd:integer"/>
    </xsd:sequence>
  </xsd:complexType>
  
  <xsd:complexType name="tActivityData">
    <xsd:sequence>
      <xsd:element name="activityType" type="xsd:string"/>
      <xsd:element name="evalPoint" type="xsd:string"/>
      <xsd:element name="durationInSeconds" minOccurs="0" type="xsd:double"/>
      <xsd:element name="duration" type="xsd:duration" minOccurs="0"/>
      <xsd:element name="errorMessage" nillable="true" minOccurs="0"
 type="xsd:string"/>
    </xsd:sequence>
  </xsd:complexType>
  
  <!--
    The header of the document contains some metadata.
  -->
                <!--
    Sensor Action data is presented in the form of a header and potentially many
 data
    elements depending on how many sensors associated to the sensor action marked
 the
    data as interesting.
  -->
  <xsd:complexType name="tSensorActionData">
    <xsd:sequence>
      <xsd:element name="header" type="tns:tHeaderInfo"/>
      <xsd:element name="payload" type="tns:tSensorData" minOccurs="1"
                   maxOccurs="1"/>
    </xsd:sequence>
  </xsd:complexType>

<!--
  <xsd:simpleType name="tActivityEvalPoint">
    <xsd:restriction>
      <xsd:enumeration value="start"/>
      <xsd:enumeration value="complete"/>
      <xsd:enumeration value="fault"/>
      <xsd:enumeration value="compensate"/>
      <xsd:enumeration value="retry"/>
    </xsd:restriction>
  </xsd:simpleType>

-->

    <!--
    The process sensor value header comprises of a timestamp
    where the sensor was triggered and the sensor metadata
  -->
  <xsd:complexType name="tProcessSensorValueHeader">
    <xsd:sequence>
      <xsd:element name="timestamp" type="xsd:dateTime"/>
      <xsd:element ref="tns:sensor"/>
    </xsd:sequence>
  </xsd:complexType>
  <!--
    Extend tActivityData to include more elements
  -->
  <xsd:complexType name="tProcessActivityData">
    <xsd:complexContent>
      <xsd:extension base="tns:tActivityData">
        <xsd:sequence>
          <xsd:element name="creationDate" type="xsd:dateTime" minOccurs="0"
 maxOccurs="1"/>
          <xsd:element name="modifyDate" type="xsd:dateTime" minOccurs="0"
 maxOccurs="1"/>
          <xsd:element name="evalTime" type="xsd:long" minOccurs="0"
 maxOccurs="1"/>
          <xsd:element name="retryCount" type="xsd:int" minOccurs="0"
 maxOccurs="1"/>
        </xsd:sequence>            </xsd:extension>
    </xsd:complexContent>
  </xsd:complexType>

  <!--
    Extend tVariableData to include more elements
  -->
  <xsd:complexType name="tProcessVariableData">
    <xsd:complexContent>
      <xsd:extension base="tns:tVariableData">
        <xsd:sequence>
          <xsd:element name="creationDate" type="xsd:dateTime" minOccurs="0"
 maxOccurs="1"/>
          <xsd:element name="modifyDate" type="xsd:dateTime" minOccurs="0"
 maxOccurs="1"/>
        </xsd:sequence>            </xsd:extension>
    </xsd:complexContent>
  </xsd:complexType>

  <!--
    Extend tFaultData to include more elements
  -->
  <xsd:complexType name="tProcessFaultData">
    <xsd:complexContent>
      <xsd:extension base="tns:tFaultData">
        <xsd:sequence>
          <xsd:element name="creationDate" type="xsd:dateTime" minOccurs="0"
 maxOccurs="1"/>
          <xsd:element name="modifyDate" type="xsd:dateTime" minOccurs="0"
 maxOccurs="1"/>
        </xsd:sequence>            </xsd:extension>
    </xsd:complexContent>
  </xsd:complexType>

  <!--
    Copy of tSensorData type with some modified types.
  -->
  <xsd:complexType name="tProcessSensorData">
    <xsd:sequence>
      <xsd:element name="activityData" type="tns:tProcessActivityData"
 minOccurs="0"/>
      <xsd:element name="faultData" type="tns:tProcessFaultData" minOccurs="0"/>
      <xsd:element name="variableData" type="tns:tProcessVariableData"
 minOccurs="0" maxOccurs="unbounded"/>
    </xsd:sequence>
  </xsd:complexType>

  <!--
    A single process sensor value comprises of the sensor value metadata
    (sensor and timestamp) and the payload (the value) of the sensor
  -->
  <xsd:complexType name="tProcessSensorValue">
    <xsd:sequence>
      <xsd:element name="header" type="tns:tProcessSensorValueHeader"/>
      <xsd:element name="payload" type="tns:tProcessSensorData"/>
    </xsd:sequence>
  </xsd:complexType>

  <!--
    Process instance header. 
  -->
  <xsd:complexType name="tProcessInstanceInfo">
    <xsd:sequence>
      <xsd:element name="processName" type="xsd:string"/>
      <xsd:element name="processRevision" type="xsd:string"/>
      <xsd:element name="domain" type="xsd:string"/>
      <xsd:element name="instanceId" type="xsd:integer"/>
    </xsd:sequence>
  </xsd:complexType>

  <!--
    The list of sensor values comprises of a process header describing the 
    BPEL process with name, cube instance id etc. and a list of sensor values
    comprising of sensor metadata information and sensor values.
  -->
  <xsd:complexType name="tProcessSensorValueList">
    <xsd:sequence>
      <xsd:element name="process" type="tns:tProcessInstanceInfo" minOccurs="1"
 maxOccurs="1"/>
      <xsd:element name="sensorValue" type="tns:tProcessSensorValue" minOccurs="0"
 maxOccurs="unbounded"/>
    </xsd:sequence>
  </xsd:complexType>
  
  <!-- The sensor list is the root element of the sensor.xml document in the 
       bpel process suitcase and is used to define sensors. -->
  <xsd:element name="sensors" type="tns:tSensorList"/>
  
  <!-- A sensor is used to monitor a particular aspect of a bpel process -->
  <xsd:element name="sensor" type="tns:tSensor"/>
  
  <!-- The actions element is the root element of the sensorAction.xml document
       in the bpel process suitcase and is used to define sensor actions. 
       Sensor actions define how to publish data captured by sensors -->
  <xsd:element name="actions" type="tns:tSensorActionList"/>  
  
  <!-- actionData elements are produced by the sensor framework and sent to the
       appropriate data publishers when sensors 'fire' -->
  <xsd:element name="actionData" type="tns:tSensorActionData"/>  
  
  <!-- This element is used when the client API is used to query sensor values 
       stored in the default reports schema -->
  <xsd:element name="sensorValues" type="tns:tProcessSensorValueList"/>
</xsd:schema>