org.biojava.bio.search

Class SearchContentFilter

java.lang.Object

org.biojava.bio.search.SearchContentFilter

All Implemented Interfaces:

SearchContentHandler

public class SearchContentFilter
extends Object
implements SearchContentHandler

Filtering implementation of SearchContentHandler that by default passes all messages on to the next delegate in the chain.

In this handler, all info will be passed onto a delegate handler. You can build up a chain of filters by using one filter as the delegate for another. When you over-ride a method in a filter, you can modify any state you wish. If you want that to propogate on, you should call the method on yourself via super.(), if not, just return.

It is your responsibility to ensure that the events emitted from your filter are sensible. In particular, start/end messages must be paired even after filtering.

Example

 // we have a handler from somewhere
 SearchContentHandler handler = ...;

 // now we are going to mutate all "score" notifications to Double instances
 // from strings
 SearchContentHandler filter = new SearchContentFilter() {
   public void addHitProperty(Object key, Object value) {
     if("score".equals(key)) {
       if(value instanceof String) {
         value = new Double(value);
       }
     }
     super(key, value);
   }
 };
 

Since:

1.3

Author:

Matthew Pocock

Constructor Summary

Constructors

Constructor and Description
SearchContentFilter(SearchContentHandler delegate)

Method Summary

Modifier and Type	Method and Description
void	addHitProperty(Object key, Object value) The addHitProperty method adds a key/value pair containing some property of a particular hit.
void	addSearchProperty(Object key, Object value) The addSearchProperty method adds a key/value pair containing some property of the overall search result.
void	addSubHitProperty(Object key, Object value) The addSubHitProperty method adds a key/value pair containing some property of a particular subhit.
void	endHeader() The endHeader method indicates the end of a formatted header.
void	endHit() The endHit method indicates the end of a formatted hit.
void	endSearch() The endSearch method indicates the end of useful search information.
void	endSubHit() The endSubHit method indicates the end of a formatted subhit.
boolean	getMoreSearches() getMoreSearches returns the state of the SearchContentHandler with respect to further searches from its data source.
void	setDatabaseID(String databaseID) setDatabaseID identifies the database searched by a name, ID or URN.
void	setMoreSearches(boolean val) setMoreSearches sets the state of the SearchContentHandler's expectation of receiving more results.
void	setQueryID(String queryID) setQueryID identifies the query sequence by a name, ID or URN.
void	startHeader() The startHeader method indicates the start of a formatted header.
void	startHit() The startHit method indicates the start of a formatted hit.
void	startSearch() The startSearch method indicates the start of useful search information.
void	startSubHit() The startSubHit method indicates the start of a formatted subhit.

Methods inherited from class java.lang.Object

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

Constructor Detail

SearchContentFilter

public SearchContentFilter(SearchContentHandler delegate)

Method Detail

addHitProperty

public void addHitProperty(Object key,
                           Object value)

Description copied from interface: SearchContentHandler

The addHitProperty method adds a key/value pair containing some property of a particular hit.

Specified by:

addHitProperty in interface SearchContentHandler

Parameters:

key - an Object.

value - an Object.

addSearchProperty

public void addSearchProperty(Object key,
                              Object value)

Description copied from interface: SearchContentHandler

The addSearchProperty method adds a key/value pair containing some property of the overall search result.

Specified by:

addSearchProperty in interface SearchContentHandler

Parameters:

key - an Object.

value - an Object.

addSubHitProperty

public void addSubHitProperty(Object key,
                              Object value)

Description copied from interface: SearchContentHandler

The addSubHitProperty method adds a key/value pair containing some property of a particular subhit.

Specified by:

addSubHitProperty in interface SearchContentHandler

Parameters:

key - an Object.

value - an Object.

startHeader

public void startHeader()

Description copied from interface: SearchContentHandler

The startHeader method indicates the start of a formatted header. This usually contains information relevant to the search as a whole.

Specified by:

startHeader in interface SearchContentHandler

endHeader

public void endHeader()

Description copied from interface: SearchContentHandler

The endHeader method indicates the end of a formatted header.

Specified by:

endHeader in interface SearchContentHandler

startHit

public void startHit()

Description copied from interface: SearchContentHandler

The startHit method indicates the start of a formatted hit. This could be a single line, or a block of lines.

Specified by:

startHit in interface SearchContentHandler

endHit

public void endHit()

Description copied from interface: SearchContentHandler

The endHit method indicates the end of a formatted hit.

Specified by:

endHit in interface SearchContentHandler

startSearch

public void startSearch()

Description copied from interface: SearchContentHandler

The startSearch method indicates the start of useful search information.

Specified by:

startSearch in interface SearchContentHandler

endSearch

public void endSearch()

Description copied from interface: SearchContentHandler

The endSearch method indicates the end of useful search information.

Specified by:

endSearch in interface SearchContentHandler

startSubHit

public void startSubHit()

Description copied from interface: SearchContentHandler

The startSubHit method indicates the start of a formatted subhit. There may be zero or more of these per hit.

Specified by:

startSubHit in interface SearchContentHandler

endSubHit

public void endSubHit()

Description copied from interface: SearchContentHandler

The endSubHit method indicates the end of a formatted subhit.

Specified by:

endSubHit in interface SearchContentHandler

setQueryID

public void setQueryID(String queryID)

Description copied from interface: SearchContentHandler

setQueryID identifies the query sequence by a name, ID or URN.

Specified by:

setQueryID in interface SearchContentHandler

Parameters:

queryID - a String which should be an unique identifer for the sequence.

setDatabaseID

public void setDatabaseID(String databaseID)

Description copied from interface: SearchContentHandler

setDatabaseID identifies the database searched by a name, ID or URN.

Specified by:

setDatabaseID in interface SearchContentHandler

Parameters:

databaseID - a String which should be an unique identifier for the database searched.

getMoreSearches

public boolean getMoreSearches()

Description copied from interface: SearchContentHandler

getMoreSearches returns the state of the SearchContentHandler with respect to further searches from its data source. Used for handling streams of search results.

Specified by:

getMoreSearches in interface SearchContentHandler

Returns:

a boolean value.

setMoreSearches

public void setMoreSearches(boolean val)

Description copied from interface: SearchContentHandler

setMoreSearches sets the state of the SearchContentHandler's expectation of receiving more results. Used for handling streams of search results.

Specified by:

setMoreSearches in interface SearchContentHandler

Parameters:

val - a boolean value.