org.hypergraphdb.query.cond2qry

Class ExpressionBasedQuery<ResultType>

java.lang.Object

org.hypergraphdb.HGQuery<ResultType>

org.hypergraphdb.query.cond2qry.ExpressionBasedQuery<ResultType>

All Implemented Interfaces:

HGGraphHolder

public class ExpressionBasedQuery<ResultType>
extends HGQuery<ResultType>

Author:

Borislav Iordanov

Nested Class Summary

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

HGQuery.hg

Field Summary

Fields inherited from class org.hypergraphdb.HGQuery

ctx, graph

Constructor Summary

Constructors

Constructor and Description
ExpressionBasedQuery(HyperGraph graph, boolean withVarContext)
ExpressionBasedQuery(HyperGraph graph, HGQueryCondition condition)

Method Summary

Methods

Modifier and Type	Method and Description
HGQuery<ResultType>	compile(HGQueryCondition condition) Compile the passed in condition as this query object and return this.
HGSearchResult<ResultType>	execute() Execute the query and return the result set.
HGQuery<ResultType>	getCompiledQuery()
HGQueryCondition	getCondition() Return a possibly simplified and normalized version of the condition with which this query was constructed.

Methods inherited from class org.hypergraphdb.HGQuery

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

ExpressionBasedQuery

public ExpressionBasedQuery(HyperGraph graph,
                    boolean withVarContext)

ExpressionBasedQuery

public ExpressionBasedQuery(HyperGraph graph,
                    HGQueryCondition condition)

Method Detail

compile

public HGQuery<ResultType> compile(HGQueryCondition condition)

Description copied from class: HGQuery

Compile the passed in condition as this query object and return this.

Overrides:

compile in class HGQuery<ResultType>

execute

public HGSearchResult<ResultType> 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<ResultType>

getCondition

public HGQueryCondition getCondition()

Return a possibly simplified and normalized version of the condition with which this query was constructed.

getCompiledQuery

public HGQuery<ResultType> getCompiledQuery()