prajna.data.query

Interface QueryTransform

public interface QueryTransform

Transforms a DocFilter query into a string for a particular search engine. Implementations of this interface should transform the query into an engine-specific form for a particular search engine. If a particular search engine does not support a particular type of query (such as proximity search), the transformQuery method should either make a best-effort attempt to provide the functionality, or ignore the clause.

Author:

Edward Swing

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.String	getSearchField() Get the field specified for the text search
void	setSearchField(java.lang.String field) Set the field for the text search.
java.lang.String	transformQuery(DocFilter query) Transform the query into a query for a specific search engine.

Method Detail

getSearchField

java.lang.String getSearchField()

Get the field specified for the text search

Returns:

the search field

setSearchField

void setSearchField(java.lang.String field)

Set the field for the text search. If unset, the behavior of the transform is dependent on the underlying implementation.

Parameters:

field - the search field

transformQuery

java.lang.String transformQuery(DocFilter query)

Transform the query into a query for a specific search engine.

Parameters:

query - the query

Returns:

the formatted query string for the search engine