org.hypergraphdb.query.impl

Class DefaultKeyBasedQuery<Key,Value>

java.lang.Object

org.hypergraphdb.HGQuery<Value>

org.hypergraphdb.query.impl.KeyBasedQuery<Key,Value>

org.hypergraphdb.query.impl.DefaultKeyBasedQuery<Key,Value>

All Implemented Interfaces:

HGGraphHolder

public class DefaultKeyBasedQuery<Key,Value>
extends KeyBasedQuery<Key,Value>

Nested Class Summary

Nested classes/interfaces inherited from class org.hypergraphdb.HGQuery

HGQuery.hg

Field Summary

Fields inherited from class org.hypergraphdb.HGQuery

ctx

Constructor Summary

Constructors

Constructor and Description
DefaultKeyBasedQuery(HyperGraph graph, HGQueryCondition cond, ValueSetter<Key> setter)

Method Summary

Methods

Modifier and Type	Method and Description
HGSearchResult<Value>	execute() Execute the query and return the result set.
Key	getKey() Retrieve the key object used to perform this query.
void	setKey(Key key) Specify the key on which this query operates.

Methods inherited from class org.hypergraphdb.HGQuery

compile, findAll, findInSet, findOne, getHyperGraph, initialValue, initialVar, make, make, NOP, setHyperGraph, var, var

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultKeyBasedQuery

public DefaultKeyBasedQuery(HyperGraph graph,
                    HGQueryCondition cond,
                    ValueSetter<Key> setter)

Method Detail

getKey

public Key getKey()

Description copied from class: KeyBasedQuery

Retrieve the key object used to perform this query.

Specified by:

getKey in class KeyBasedQuery<Key,Value>

setKey

public void setKey(Key key)

Description copied from class: KeyBasedQuery

Specify the key on which this query operates.

Specified by:

setKey in class KeyBasedQuery<Key,Value>

Parameters:

key - The key object. The value may be interpreted differently based on the concrete HGQuery instance. Usually it should be either a byte [] or convertible to one.

execute

public HGSearchResult<Value> execute()

Description copied from class: HGQuery

Execute the query and return the result set. Note that queries are lazily executed so that results are actually obtained when one iterates (using the next and prev of the returned object).

Specified by:

execute in class HGQuery<Value>