Package org.apache.manifoldcf.agents.output

Class BaseOutputConnector

  • All Implemented Interfaces:
    IOutputConnector, IPipelineConnector, IConnector
    public abstract class BaseOutputConnector
extends BaseConnector
implements IOutputConnector
    This base class describes an instance of a connection between an output pipeline and the Connector Framework. Each instance of this interface is used in only one thread at a time. Connection Pooling on these kinds of objects is performed by the factory which instantiates repository connectors from symbolic names and config parameters, and is pooled by these parameters. That is, a pooled connector handle is used only if all the connection parameters for the handle match. Implementers of this interface should provide a default constructor which has this signature: 
     xxx();
    Connectors are either configured or not. If configured, they will persist in a pool, and be reused multiple times. Certain methods of a connector may be called before the connector is configured. This includes basically all methods that permit inspection of the connector's capabilities.

    • Constructor Detail

      • BaseOutputConnector

        public BaseOutputConnector()

    • Method Detail

      • getActivitiesList

        public java.lang.String[] getActivitiesList()
        Return the list of activities that this connector supports (i.e. writes into the log).
        Specified by:
        getActivitiesList in interface IOutputConnector
        Returns:
        the list.

      • requestInfo

        public boolean requestInfo​(Configuration output,
                           java.lang.String command)
                    throws ManifoldCFException
        Request arbitrary connector information. This method is called directly from the API in order to allow API users to perform any one of several connector-specific queries.
        Specified by:
        requestInfo in interface IOutputConnector
        Parameters:
        output - is the response object, to be filled in by this method.
        command - is the command, which is taken directly from the API request.
        Returns:
        true if the resource is found, false if not. In either case, output may be filled in.
        Throws:
        ManifoldCFException

      • noteJobComplete

        public void noteJobComplete​(IOutputNotifyActivity activities)
                     throws ManifoldCFException,
                            ServiceInterruption
        Notify the connector of a completed job. This is meant to allow the connector to flush any internal data structures it has been keeping around, or to tell the output repository that this is a good time to synchronize things. It is called whenever a job is either completed or aborted.
        Specified by:
        noteJobComplete in interface IOutputConnector
        Parameters:
        activities - is the handle to an object that the implementer of an output connector may use to perform operations, such as logging processing activity.
        Throws:
        ManifoldCFException
        ServiceInterruption

      • checkDateIndexable

        public boolean checkDateIndexable​(VersionContext pipelineDescription,
                                  java.util.Date date,
                                  IOutputCheckActivity checkActivity)
                           throws ManifoldCFException,
                                  ServiceInterruption
        Detect if a document date is acceptable or not. This method is used to determine whether it makes sense to fetch a document in the first place.
        Specified by:
        checkDateIndexable in interface IPipelineConnector
        Parameters:
        pipelineDescription - is the document's pipeline version string, for this connection.
        date - is the date of the document.
        checkActivity - is an object including the activities that can be performed by this method.
        Returns:
        true if the document with that date can be accepted by this connector.
        Throws:
        ManifoldCFException
        ServiceInterruption

      • checkMimeTypeIndexable

        public boolean checkMimeTypeIndexable​(VersionContext pipelineDescription,
                                      java.lang.String mimeType,
                                      IOutputCheckActivity checkActivity)
                               throws ManifoldCFException,
                                      ServiceInterruption
        Detect if a mime type is acceptable or not. This method is used to determine whether it makes sense to fetch a document in the first place.
        Specified by:
        checkMimeTypeIndexable in interface IPipelineConnector
        Parameters:
        pipelineDescription - is the document's pipeline version string, for this connection.
        mimeType - is the mime type of the document.
        checkActivity - is an object including the activities that can be performed by this method.
        Returns:
        true if the mime type can be accepted by this connector.
        Throws:
        ManifoldCFException
        ServiceInterruption

      • checkDocumentIndexable

        public boolean checkDocumentIndexable​(VersionContext pipelineDescription,
                                      java.io.File localFile,
                                      IOutputCheckActivity checkActivity)
                               throws ManifoldCFException,
                                      ServiceInterruption
        Pre-determine whether a document (passed here as a File object) is acceptable or not. This method is used to determine whether a document needs to be actually transferred. This hook is provided mainly to support search engines that only handle a small set of accepted file types.
        Specified by:
        checkDocumentIndexable in interface IPipelineConnector
        Parameters:
        pipelineDescription - is the document's pipeline version string, for this connection.
        localFile - is the local file to check.
        checkActivity - is an object including the activities that can be done by this method.
        Returns:
        true if the file is acceptable, false if not.
        Throws:
        ManifoldCFException
        ServiceInterruption

      • checkURLIndexable

        public boolean checkURLIndexable​(VersionContext pipelineDescription,
                                 java.lang.String url,
                                 IOutputCheckActivity checkActivity)
                          throws ManifoldCFException,
                                 ServiceInterruption
        Pre-determine whether a document's URL is acceptable. This method is used to help filter out documents that cannot be indexed in advance.
        Specified by:
        checkURLIndexable in interface IPipelineConnector
        Parameters:
        pipelineDescription - is the document's pipeline version string, for this connection.
        url - is the URL of the document.
        checkActivity - is an object including the activities that can be done by this method.
        Returns:
        true if the file is acceptable, false if not.
        Throws:
        ManifoldCFException
        ServiceInterruption

      • getPipelineDescription

        public VersionContext getPipelineDescription​(Specification spec)
                                      throws ManifoldCFException,
                                             ServiceInterruption
        Get a pipeline version string, given a pipeline specification object. The version string is used to uniquely describe the pertinent details of the specification and the configuration, to allow the Connector Framework to determine whether a document will need to be processed again. Note that the contents of any document cannot be considered by this method; only configuration and specification information can be considered. This method presumes that the underlying connector object has been configured.
        Specified by:
        getPipelineDescription in interface IPipelineConnector
        Parameters:
        spec - is the current pipeline specification object for this connection for the job that is doing the crawling.
        Returns:
        a string, of unlimited length, which uniquely describes configuration and specification in such a way that if two such strings are equal, nothing that affects how or whether the document is indexed will be different.
        Throws:
        ManifoldCFException
        ServiceInterruption

      • addOrReplaceDocumentWithException

        public int addOrReplaceDocumentWithException​(java.lang.String documentURI,
                                             VersionContext pipelineDescription,
                                             RepositoryDocument document,
                                             java.lang.String authorityNameString,
                                             IOutputAddActivity activities)
                                      throws ManifoldCFException,
                                             ServiceInterruption,
                                             java.io.IOException
        Add (or replace) a document in the output data store using the connector. This method presumes that the connector object has been configured, and it is thus able to communicate with the output data store should that be necessary.
        Specified by:
        addOrReplaceDocumentWithException in interface IPipelineConnector
        Parameters:
        documentURI - is the URI of the document. The URI is presumed to be the unique identifier which the output data store will use to process and serve the document. This URI is constructed by the repository connector which fetches the document, and is thus universal across all output connectors.
        pipelineDescription - includes the description string that was constructed for this document by the getOutputDescription() method.
        document - is the document data to be processed (handed to the output data store).
        authorityNameString - is the name of the authority responsible for authorizing any access tokens passed in with the repository document. May be null.
        activities - is the handle to an object that the implementer of a pipeline connector may use to perform operations, such as logging processing activity, or sending a modified document to the next stage in the pipeline.
        Returns:
        the document status (accepted or permanently rejected).
        Throws:
        java.io.IOException - only if there's a stream error reading the document data.
        ManifoldCFException
        ServiceInterruption

      • removeDocument

        public void removeDocument​(java.lang.String documentURI,
                           java.lang.String outputDescription,
                           IOutputRemoveActivity activities)
                    throws ManifoldCFException,
                           ServiceInterruption
        Remove a document using the connector. Note that the last outputDescription is included, since it may be necessary for the connector to use such information to know how to properly remove the document.
        Specified by:
        removeDocument in interface IOutputConnector
        Parameters:
        documentURI - is the URI of the document. The URI is presumed to be the unique identifier which the output data store will use to process and serve the document. This URI is constructed by the repository connector which fetches the document, and is thus universal across all output connectors.
        outputDescription - is the last description string that was constructed for this document by the getOutputDescription() method above.
        activities - is the handle to an object that the implementer of an output connector may use to perform operations, such as logging processing activity.
        Throws:
        ManifoldCFException
        ServiceInterruption

      • noteAllRecordsRemoved

        public void noteAllRecordsRemoved()
                           throws ManifoldCFException
        Notify the connector that all records associated with this connection have been removed. This method allows the connector to remove any internal data storage that is associated with records sent to the index on behalf of a connection. It should not attempt to communicate with the output index.
        Specified by:
        noteAllRecordsRemoved in interface IOutputConnector
        Throws:
        ManifoldCFException

      • getFormCheckJavascriptMethodName

        public java.lang.String getFormCheckJavascriptMethodName​(int connectionSequenceNumber)
        Obtain the name of the form check javascript method to call.
        Specified by:
        getFormCheckJavascriptMethodName in interface IPipelineConnector
        Parameters:
        connectionSequenceNumber - is the unique number of this connection within the job.
        Returns:
        the name of the form check javascript method.

      • getFormPresaveCheckJavascriptMethodName

        public java.lang.String getFormPresaveCheckJavascriptMethodName​(int connectionSequenceNumber)
        Obtain the name of the form presave check javascript method to call.
        Specified by:
        getFormPresaveCheckJavascriptMethodName in interface IPipelineConnector
        Parameters:
        connectionSequenceNumber - is the unique number of this connection within the job.
        Returns:
        the name of the form presave check javascript method.

      • outputSpecificationHeader

        public void outputSpecificationHeader​(IHTTPOutput out,
                                      java.util.Locale locale,
                                      Specification os,
                                      int connectionSequenceNumber,
                                      java.util.List<java.lang.String> tabsArray)
                               throws ManifoldCFException,
                                      java.io.IOException
        Output the specification header section. This method is called in the head section of a job page which has selected an output connection of the current type. Its purpose is to add the required tabs to the list, and to output any javascript methods that might be needed by the job editing HTML.
        Specified by:
        outputSpecificationHeader in interface IPipelineConnector
        Parameters:
        out - is the output to which any HTML should be sent.
        locale - is the preferred local of the output.
        os - is the current output specification for this job.
        connectionSequenceNumber - is the unique number of this connection within the job.
        tabsArray - is an array of tab names. Add to this array any tab names that are specific to the connector.
        Throws:
        ManifoldCFException
        java.io.IOException

      • outputSpecificationBody

        public void outputSpecificationBody​(IHTTPOutput out,
                                    java.util.Locale locale,
                                    Specification os,
                                    int connectionSequenceNumber,
                                    int actualSequenceNumber,
                                    java.lang.String tabName)
                             throws ManifoldCFException,
                                    java.io.IOException
        Output the specification body section. This method is called in the body section of a job page which has selected an output connection of the current type. Its purpose is to present the required form elements for editing. The coder can presume that the HTML that is output from this configuration will be within appropriate <html>, <body>, and <form> tags. The name of the form is "editjob".
        Specified by:
        outputSpecificationBody in interface IPipelineConnector
        Parameters:
        out - is the output to which any HTML should be sent.
        locale - is the preferred local of the output.
        os - is the current output specification for this job.
        connectionSequenceNumber - is the unique number of this connection within the job.
        actualSequenceNumber - is the connection within the job that has currently been selected.
        tabName - is the current tab name.
        Throws:
        ManifoldCFException
        java.io.IOException

      • processSpecificationPost

        public java.lang.String processSpecificationPost​(IPostParameters variableContext,
                                                 java.util.Locale locale,
                                                 Specification os,
                                                 int connectionSequenceNumber)
                                          throws ManifoldCFException
        Process a specification post. This method is called at the start of job's edit or view page, whenever there is a possibility that form data for a connection has been posted. Its purpose is to gather form information and modify the output specification accordingly. The name of the posted form is "editjob".
        Specified by:
        processSpecificationPost in interface IPipelineConnector
        Parameters:
        variableContext - contains the post data, including binary file-upload information.
        locale - is the preferred local of the output.
        os - is the current output specification for this job.
        connectionSequenceNumber - is the unique number of this connection within the job.
        Returns:
        null if all is well, or a string error message if there is an error that should prevent saving of the job (and cause a redirection to an error page).
        Throws:
        ManifoldCFException

      • viewSpecification

        public void viewSpecification​(IHTTPOutput out,
                              java.util.Locale locale,
                              Specification os,
                              int connectionSequenceNumber)
                       throws ManifoldCFException,
                              java.io.IOException
        View specification. This method is called in the body section of a job's view page. Its purpose is to present the output specification information to the user. The coder can presume that the HTML that is output from this configuration will be within appropriate <html> and <body> tags.
        Specified by:
        viewSpecification in interface IPipelineConnector
        Parameters:
        out - is the output to which any HTML should be sent.
        locale - is the preferred local of the output.
        connectionSequenceNumber - is the unique number of this connection within the job.
        os - is the current output specification for this job.
        Throws:
        ManifoldCFException
        java.io.IOException