RDBMSSearcher (Ontopia)

java.lang.Object
- net.ontopia.topicmaps.query.spi.AbstractSearcher
- - net.ontopia.topicmaps.query.spi.RDBMSSearcher

All Implemented Interfaces:

SearcherIF
```
public class RDBMSSearcher
extends AbstractSearcher
```
EXPERIMENTAL: RDBMS searcher implementation that executes a SQL query in the same database as the topic map is stored in. The query must return two columns, the first the object id of the result topic map object (a string), the second the score (a float).
The name of the predicate is used as the key to look up the query itself. The queries are read from a properties file called RDBMSSearcher.props from the CLASSPATH.
The sql query can be specified directly via the 'sql' URI parameter on the searcher class. Just make sure that the query is URI encoded. The query file name can be overriden with the 'queryFile' parameter.

Field Summary
- Fields inherited from class net.ontopia.topicmaps.query.spi.AbstractSearcher
  moduleURI, parameters, predicateName, topicmap
- Fields inherited from interface net.ontopia.topicmaps.query.spi.SearcherIF
  ITEM_IDENTIFIER, OBJECT_ID, OBJECT_VALUE, OCCURRENCE_URI, STRING_VALUE, SUBJECT_IDENTIFIER, SUBJECT_LOCATOR

Constructor Summary

Constructors
Constructor Description

RDBMSSearcher()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`SearchResultIF`	`getResult(String query)`	PUBLIC: Returns the String value of the field.
`int`	`getValueType()`	PUBLIC: Returns type of values returned by the search result.

Methods inherited from class net.ontopia.topicmaps.query.spi.AbstractSearcher
setModuleURI, setParameters, setPredicateName, setTopicMap

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - RDBMSSearcher
```
public RDBMSSearcher()
```
- Method Detail
  - getValueType
```
public int getValueType()
```
    Description copied from interface: SearcherIF
    
    PUBLIC: Returns type of values returned by the search result. See constants declared in this class.
  - getResult
```
public SearchResultIF getResult(String query)
```
    Description copied from interface: SearcherIF
    
    PUBLIC: Returns the String value of the field. Note that null is returned if the field has a reader set.