Description

The Solr Catalog Provider (SCP) is an implementation of the CatalogProvider interface using Apache Solr as a data store. Some notable features of the SCP are

Supports Extensible Metacards
Fast, simple contextual searching
Indexes XML Attributes as well as CDATA sections and XML text elements
Simple relative (//element) and absolute pathing (/root/element) xpath support.
Works with an embedded, local Solr Server (all-in-one Catalog)
- No configuration necessary on a single-node Distribution
- Data directory of solr indexes are configurable
Works with a standalone Solr Server

Solr Catalog Provider Implementations

DDF Catalog Solr Embedded Provider
Solr Catalog Provider Configurations (OLD) — implementation of a CatalogProvider using Apache Solr as the data store.
DDF Catalog Solr External Provider
Standalone Solr Server — an Apache Solr instance as a Catalog data store within the distribution
- Solr Standalone Server Backup

Implementation Details

Indexing Text

When storing fields, the Solr Catalog Provider will analyze and tokenize the text values of STRING_TYPE and XML_TYPE AttributeTypes. These types of fields are indexed in at least three ways: in raw form, analyzed with case sensitivity, and then analyzed without concern to case sensitivity. Concerning XML, the Solr Catalog Provider will analyze and tokenize XML CDATA sections, XML Element text values, and XML Attribute values.

Whitelist

No packages have been exported by the DDF Solr Catalog Application, hence there are no packages approved for use by third parties.

Known Issues

When searching with the ANY_TEXT field, SCP does not search all text fields within the Catalog Provider. Instead, it searches the METADATA field.
SCP does not fully support spatial capabilities.
SCP does not support ingesting or querying GeometryCollection WKT.
SCP does not support crossing the International Date Line or pole wrapping.
SCP ignores the following AttributeDescriptor methods: isIndexed, isTokenized, isMultivalued, isStored. SCP instead indexes, tokenizes, and stores data based on the AttibuteFormat, such as it will store and not index all fields labeled as AttributeFormat.BINARY regardless of user instruction. SCP as of now has no multivalue support even though it is supported by Solr.
SCP has a 1000 nautical mile limit for nearest neighbor queries. If a point is not provided, then the centroid of the shape will be used for distance calculations.
SCP does not support full TextPath. Attributes and equality expressions are not supported currently.

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