Updating crawl configurations

Call the IasCrawler.updateCrawl() method to change the configuration settings for an existing crawl.

The syntax of the method is:

IasCrawler.updateCrawl(CrawlConfig crawlConfig)

The crawlConfig parameter is a CrawlConfig object that has the configuration settings of the crawl.

If you update a crawl configuration and specify an empty ModuleProperty for a password property, the crawl configuration reuses the password stored on IAS Server.

Note: You cannot change the configuration if the crawl is running.

To update the configuration settings of an existing crawl:

Make sure that you have created a connection to the IAS Server. (An IasCrawler object named crawler is used in this example.)
Set the name for the crawl to be modified by first instantiating a CrawlId object and then setting its ID in the constructor.
For example:
```
// Create a new crawl Id with the name set to Demo.
CrawlId crawlId = new CrawlId("Demo");
```
Call the IasCrawler.getCrawlConfig() method to retrieve the current configuration.
For example:
```
CrawlConfig crawlConfig = crawler.getCrawlConfig(crawlId, false);
```
Change the configuration settings as desired.
Update the file system crawl by using the IasCrawler.updateCrawl() method with the previously created crawlConfig.
For example:
```
crawler.updateCrawl(crawlConfig);
```

If the IasCrawler.updateCrawl() method fails, it throws an exception:

CrawlInProgressException occurs if the crawl is running.
CrawlNotFoundException occurs if the specified crawl (the crawlId parameter) does not exist or is otherwise not found.
InvalidCrawlConfigException occurs if the configuration is invalid.

To catch these exceptions, use a try block when you call the method.