Page History
...
...
...
...
...
...
...
...
...
...
...
...
How it Works
- Select a publisher jar to load
...
- . This is a component (aspire-XXX-publisher).
...
- A common app bundle
...
- is loaded automatically
...
- .
- The app bundle loads the publisher framework jar and the originally requested
...
- provider.
- The framework
...
- may perform optional
...
- Groovy or
...
- XML transforms; and the appropriate parameters are collected by the framework
...
- .
...
- Where possible, connections are pooled.
Developer
...
Settings
| Anchor | ||||
|---|---|---|---|---|
|
Similar to
...
“SourceInfo”, the framework uses
...
“PublisherInfo”. This holds information that is used to connect to
...
a target repository (
...
URL, username, password etc.)
...
and also controls the framework functionality
...
. For example, if the framework allows for a transformation
...
that a connector
...
does not require
...
, you can disable it.
...
You can extend this, if required
...
.
The framework allows for the following configuration
...
:
When a connection is required
Pool connections
True/false that connections should be pooled
Use transform
Transform type – none/xml/json + default transform file (to pick out of component)
Supports authentication
http(s)
...
A set of properties in the
...
publisher controls the DXF in the common app bundle and the options in the framework.
...
Use these to control the app bundle loaded (
...
via the aspire application), and the configuration of the component “publisher info” (for example, to control
...
whether or not the publisher supports “clear” and “commit” operations
...
)
- For other specific DXF properties, define your own resources/dxf/publisher.xml file. Your properties will be merged with the common ones.
Component Properties
Control of the common DXF is by way of a new properties file resources/aspire.properties that is added to the component. This file allows you to add properties.
- These properties are passed to the DXF allowing control of the options shown to the installer.
The developer controls the DXF by setting the properties in resources/aspire.properties like in this example:
| Code Block |
|---|
component.appbundle.maven.coordinates=app-pap-publisher
#component.<SUBTYPE>.dxf=xxxx
component.default.dxf=dxf/publisher.xml
publisher.framework.isPAP=true
publisher.framework.dxf.merge=true
publisher.framework.dxf.merge.top=true
publisher.framework.dxf.url=true
publisher.framework.dxf.credentials=true
publisher.framework.dxf.startEnd=true
publisher.framework.dxf.transform=true
publisher.framework.dxf.connection=true
publisher.framework.dxf.dumpIndex=false |
Installation Settings
...
Installation settings are collected when the component is installed.
...
Required items include location and connection (user/password) details of the target. The
...
intent is that only options that the developer has enabled (in the
...
Developer Settings) will be presented to the user.
...
These settings are collected using DXF. A publisher-specific DXF is merged with a common piece to present the entire set.
The framework collects the following parameters:
Target URL
The
...
URL for the search engine, etc.
Authentication
Yes/
...
No/
...
Type
Gather username/password
Clear before full crawls
True/
...
False. If true, the publisher will
...
start jobs for full
...
crawls by calling a clear method
Commit after crawls
True/
...
False. If true, the publisher will
...
end jobs for crawls by calling a commit method
Transform data before sending
True/
...
False
Transform file name
For cases when transformation is required
...
Implementation
- On startup, the framework connects to the provider (PAP) and calls a method “newPublisherInfo”.
- This returns a class (much like the SourceInfo), holding all of the configuration for the publisher (including the common options – perform clear ,etc.).
- This can be passed to other calls later.
- If required, connection pools will be
...
- initialized here.
- When processing a document, the framework first
...
- categorizes the job
...
- into “control” or “document”.
- “Control” jobs are commit and clear
...
- .
- The framework calls the provider’s commit or clear methods (if enabled and processing is selected); passing a connection as required.
- For “document” jobs, the
...
- framework determines whether a new batch is required and calls the provider’s startBatch
...
- method.
- The framework provides “standard” batch implementations.
...
- The provider establishes the specific type of job (add/update, delete or delete by query) and
...
- calls the appropriate provider method.
- Closing the component
...
- releases all of the connections.
...
Component properties
...
| Code Block | ||
|---|---|---|
| ||
package com.searchtechnologies.aspire.simplefile;
import com.searchtechnologies.aspire.framework.ComponentImpl;
import com.searchtechnologies.aspire.publisher.services.PublisherAccessProvider;
import com.searchtechnologies.aspire.publisher.services.PublisherBatch;
import com.searchtechnologies.aspire.publisher.services.PublisherInfo;
import com.searchtechnologies.aspire.publisher.services.PublisherRepositoryConnection;
import com.searchtechnologies.aspire.publisher.services.queryexpr.DeleteByQuery;
import com.searchtechnologies.aspire.services.AspireException;
import com.searchtechnologies.aspire.services.AspireObject;
import com.searchtechnologies.aspire.services.Job;
import org.w3c.dom.Element;
import java.io.IOException;
import java.io.Writer;
public class SimpleFilePAP extends ComponentImpl implements PublisherAccessProvider {
@Override
public void initialize(Element element) throws AspireException {
}
@Override
public PublisherInfo newPublisherInfo(Element cfg) {
SimpleFilePublisherInfo publisherInfo = new SimpleFilePublisherInfo();
publisherInfo.initialize(cfg);
return publisherInfo;
}
@Override
public void processClear(PublisherRepositoryConnection conn, Job j, PublisherInfo publisherInfo) {
info("Clear job");
}
@Override
public void processCommit(PublisherRepositoryConnection conn, Job j, PublisherInfo publisherInfo) {
info("Commit job");
}
@Override
public void startBatch(PublisherBatch batch, PublisherInfo publisherInfo) {
info("Batch start");
// Add the header
try {
Writer w = (Writer) batch.getBatchConnection().connection();
w.write("<docs>\n");
w.flush();
} catch (IOException e) {
throw new AspireException("SimpleFilePublisher.IOException-writeToStream", e, "IOException writing %s", publisherInfo.getUrl());
}
}
@Override
public void endBatch(PublisherBatch batch, PublisherInfo publisherInfo) {
info("Batch end");
// Add the footer
try {
Writer w = (Writer) batch.getBatchConnection().connection();
w.write("</docs>\n");
w.flush();
} catch (IOException e) {
throw new AspireException("SimpleFilePublisher.IOException-writeToStream", e, "IOException writing %s", publisherInfo.getUrl());
}
}
@Override
public void processAddUpdate(PublisherBatch batch, Job j, PublisherInfo publisherInfo) {
info("Batch process");
Writer w = (Writer) batch.getBatchConnection().connection();
// Write out the document from the job
j.get().toXmlString(AspireObject.PRETTY, w);
}
@Override
public void processDelete(PublisherBatch batch, Job j, PublisherInfo publisherInfo) {
}
@Override
public void processDeleteByQuery(PublisherBatch batch, DeleteByQuery deleteByQuery, Job j, PublisherInfo publisherInfo) {
}
@Override
public void close() {
}
}
|
Overview
Content Tools