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public interface CatalogBuilder
An interface for building catalogs where each instance only builds catalogs for the dataset collection root it was setup to handle.
Method Summary | |
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InvCatalogImpl |
generateCatalog(CrawlableDataset catalogCrDs)
Return an InvCatalog for the level in the collection hierarchy specified by catalogPath. |
org.jdom.Document |
generateCatalogAsDocument(CrawlableDataset catalogCrDs)
Return a JDOM Document representation of the catalog for the level in the collection hierarchy specified by catalogPath. |
String |
generateCatalogAsString(CrawlableDataset catalogCrDs)
Return a String containing the XML representation of the catalog for the level in the collection hierarchy specified by catalogPath. |
InvCatalogImpl |
generateProxyDsResolverCatalog(CrawlableDataset catalogCrDs,
ProxyDatasetHandler pdh)
Generate the catalog for a resolver request of the given ProxyDatasetHandler. |
CrawlableDataset |
requestCrawlableDataset(String path)
Return the CrawlableDataset for the given path, null if this CatalogBuilder does not allow the requested CrawlableDataset. |
Method Detail |
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CrawlableDataset requestCrawlableDataset(String path) throws IOException
This method can handle requests for regular datasets and proxy datasets.
path
- the path of the requested CrawlableDataset
IOException
- if an I/O error occurs while locating the children datasets.InvCatalogImpl generateCatalog(CrawlableDataset catalogCrDs) throws IOException
catalogCrDs
- the location in the collection at which to generate a catalog
IOException
- if problems accessing the dataset collection.InvCatalogImpl generateProxyDsResolverCatalog(CrawlableDataset catalogCrDs, ProxyDatasetHandler pdh) throws IOException
catalogCrDs
- the location in the collection at which to generate a catalogpdh
- the ProxyDatasetHandler corresponding to the resolver request.
IllegalArgumentException
- if the given ProxyDatasetHandler is not known by this CollectionLevelScanner.
IOException
org.jdom.Document generateCatalogAsDocument(CrawlableDataset catalogCrDs) throws IOException
catalogCrDs
- the location in the collection at which to generate a catalog
IOException
- if problems accessing the dataset collection.String generateCatalogAsString(CrawlableDataset catalogCrDs) throws IOException
catalogCrDs
- the location in the collection at which to generate a catalog
IOException
- if problems accessing the dataset collection.
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