Package net.ontopia.infoset.fulltext.impl.rdbms

Class RDBMSSearcher

java.lang.Object

net.ontopia.topicmaps.impl.utils.AbstractIndex

net.ontopia.infoset.fulltext.impl.rdbms.RDBMSSearcher

All Implemented Interfaces:

SearcherIF, IndexIF

public class RDBMSSearcher
extends AbstractIndex
implements SearcherIF

INTERNAL: A generic RDBMS fulltext searcher implementation. Note that the class only accepts an RDBMS topic map in its constructor.

Field Summary

Fields

Modifier and Type	Field	Description
protected static String[]	fnames
protected int	ft_platform
protected static int	FT_PLATFORM_GENERIC
protected static int	FT_PLATFORM_ORACLE_TEXT
protected static int	FT_PLATFORM_SQLSERVER
protected static int	FT_PLATFORM_TSEARCH2
protected RDBMSTopicMapTransaction	tmtxn

Constructor Summary

Constructors

Constructor	Description
RDBMSSearcher(TopicMapIF topicmap)
RDBMSSearcher(TopicMapTransactionIF txn)

Method Summary

Modifier and Type	Method	Description
void	close()	INTERNAL: Releases resources associated with this searcher.
protected String	escapeQuery(String query)
IndexIF	getIndex()	INTERNAL: Method used by IndexManagerIF to manage index creation.
protected Object[]	getParameters(String query, TopicMapIF topicmap)	INTERNAL: Override this method if the parameters to be used by the query is different from the default.
boolean	isAutoUpdated()
void	refresh()
SearchResultIF	search(String query)	INTERNAL: Performs a query on an index.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

FT_PLATFORM_GENERIC

protected static final int FT_PLATFORM_GENERIC

See Also:

Constant Field Values

FT_PLATFORM_ORACLE_TEXT

protected static final int FT_PLATFORM_ORACLE_TEXT

See Also:

Constant Field Values

FT_PLATFORM_TSEARCH2

protected static final int FT_PLATFORM_TSEARCH2

See Also:

Constant Field Values

FT_PLATFORM_SQLSERVER

protected static final int FT_PLATFORM_SQLSERVER

See Also:

Constant Field Values

tmtxn

protected RDBMSTopicMapTransaction tmtxn

ft_platform

protected int ft_platform

fnames

protected static String[] fnames

Constructor Detail

RDBMSSearcher

public RDBMSSearcher(TopicMapIF topicmap)

RDBMSSearcher

public RDBMSSearcher(TopicMapTransactionIF txn)

Method Detail

search

public SearchResultIF search(String query)
                      throws IOException

Description copied from interface: SearcherIF

INTERNAL: Performs a query on an index. The actual query syntax is search engine dependent.

Specified by:

search in interface SearcherIF

Throws:

IOException

escapeQuery

protected String escapeQuery(String query)

getParameters

protected Object[] getParameters(String query,
                                 TopicMapIF topicmap)

INTERNAL: Override this method if the parameters to be used by the query is different from the default. If the parameter types are different or the order is different this method must be overridden.

close

public void close()
           throws IOException

Description copied from interface: SearcherIF

INTERNAL: Releases resources associated with this searcher.

Specified by:

close in interface SearcherIF

Throws:

IOException

getIndex

public IndexIF getIndex()

Description copied from class: AbstractIndex

INTERNAL: Method used by IndexManagerIF to manage index creation. The idea behind this method is for the index itself to decide whether to create a new instance every time or the same one.

Specified by:

getIndex in class AbstractIndex

Returns:

Index instance.

isAutoUpdated

public boolean isAutoUpdated()

refresh

public void refresh()