org.eclipse.smila.processing.pipelets.xmlprocessing
Class XPathExtractorPipelet

java.lang.Object
  org.eclipse.smila.processing.pipelets.ATransformationPipelet
      org.eclipse.smila.processing.pipelets.xmlprocessing.AXmlTransformationPipelet
          org.eclipse.smila.processing.pipelets.xmlprocessing.XPathExtractorPipelet

All Implemented Interfaces:

Pipelet

public class XPathExtractorPipelet
extends AXmlTransformationPipelet

Pipelet that extracts elements selected by XPath and converts them in appropriate data types (Boolean, Double, String). The possible properties are:

• xpath: the XPath
• seperator: the seperator (optional)
• namespace: the namespace (optional)
• inputName: name of the Attribute/Attachment to read the XML Document from
• outputName: name of the Attribute/Attachment to store the extracted value in
• inputType: the type (Attribute or Attachment of the inputName
• outputType: the type (Attribute or Attachment of the outputtName

Field Summary

static java.lang.String	PROP_NAMESPACE The namespace property.
static java.lang.String	PROP_SEPARATOR The separator property.
static java.lang.String	PROP_XPATH The name of the XSLT file used for the transformation.

Fields inherited from class org.eclipse.smila.processing.pipelets.ATransformationPipelet

_inputName, _inputType, _log, _outputName, _outputType, ENCODING_ATTACHMENT, PROP_INPUT_NAME, PROP_INPUT_TYPE, PROP_OUTPUT_NAME, PROP_OUTPUT_TYPE

Constructor Summary

XPathExtractorPipelet()

Method Summary

void	configure(AnyMap configuration) set configuration of pipelet.
java.lang.String[]	process(Blackboard blackboard, java.lang.String[] recordIds) process records on Blackboard service.

Methods inherited from class org.eclipse.smila.processing.pipelets.xmlprocessing.AXmlTransformationPipelet

createDocument, storeDocument

Methods inherited from class org.eclipse.smila.processing.pipelets.ATransformationPipelet

getInputName, getInputType, getOutputName, getOutputType, isReadFromAttribute, isStoreInAttribute, readInput, readStringInput, storeResult, storeResult, storeResults

Methods inherited from class java.lang.Object

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

Field Detail

PROP_XPATH

public static final java.lang.String PROP_XPATH

The name of the XSLT file used for the transformation.

See Also:

Constant Field Values

PROP_SEPARATOR

public static final java.lang.String PROP_SEPARATOR

The separator property.

See Also:

Constant Field Values

PROP_NAMESPACE

public static final java.lang.String PROP_NAMESPACE

The namespace property.

See Also:

Constant Field Values

Constructor Detail

XPathExtractorPipelet

public XPathExtractorPipelet()

Method Detail

configure

public void configure(AnyMap configuration)
               throws ProcessingException

set configuration of pipelet. called once after instantiation before the pipelet is actually used in a workflow.

Specified by:

configure in interface Pipelet

Overrides:

configure in class ATransformationPipelet

Parameters:

configuration - configuration of pipelet.

Throws:

ProcessingException - configuration is not applicable for pipelet (missing properties, wrong datatypes)

process

public java.lang.String[] process(Blackboard blackboard,
                                  java.lang.String[] recordIds)
                           throws ProcessingException

process records on Blackboard service.

Parameters:

blackboard - Blackboard service managing the records.

recordIds - Ids of records to process.

Returns:

Ids of result records. By default this should be the same as the passed in recordIds unless there is a specific reason not to do so. This is especially true for SearchPiplets.

Throws:

ProcessingException - error during processing.