org.hypergraphdb.query

Class AnalyzedQuery<SearchResult>

java.lang.Object

org.hypergraphdb.HGQuery<SearchResult>

org.hypergraphdb.query.AnalyzedQuery<SearchResult>

Type Parameters:

SearchResult -

All Implemented Interfaces:

HGGraphHolder

public class AnalyzedQuery<SearchResult>
extends HGQuery<SearchResult>

A query object that holds information collected during the compilation process. When a HGQueryCondition is transformed into a HGQuery, it goes through several phases where the original condition and sub-conditions get transformed into other condition objects, as intermediary steps, and eventually into an executable HGQuery.

Author:

Borislav Iordanov

Nested Class Summary

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

HGQuery.hg

Field Summary

Fields

Modifier and Type	Field and Description
static String	INTERSECTION_THRESHOLD
static String	SCAN_THRESHOLD

Fields inherited from class org.hypergraphdb.HGQuery

ctx, graph

Constructor Summary

Constructors

Constructor and Description
AnalyzedQuery(HGQueryCondition topLevel, Map<String,Object> options)

Method Summary

Methods

Modifier and Type	Method and Description
Map<String,Set<HGQueryCondition>>	analyze()
HGSearchResult<SearchResult>	execute() Execute the query and return the result set.
Set<HGQueryCondition>	getAnalysisResult(String option)
void	transformed(HGQueryCondition source, HGQueryCondition destination)
void	transformed(HGQueryCondition source, Set<HGQueryCondition> destination)
void	transformed(Set<HGQueryCondition> source, HGQueryCondition destination)
<R> void	translated(HGQueryCondition source, HGQuery<R> destination, QueryMetaData metadata)

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

Field Detail

INTERSECTION_THRESHOLD

public static final String INTERSECTION_THRESHOLD

See Also:

Constant Field Values

SCAN_THRESHOLD

public static final String SCAN_THRESHOLD

See Also:

Constant Field Values

Constructor Detail

AnalyzedQuery

public AnalyzedQuery(HGQueryCondition topLevel,
             Map<String,Object> options)

Method Detail

transformed

public void transformed(HGQueryCondition source,
               HGQueryCondition destination)

transformed

public void transformed(Set<HGQueryCondition> source,
               HGQueryCondition destination)

transformed

public void transformed(HGQueryCondition source,
               Set<HGQueryCondition> destination)

translated

public <R> void translated(HGQueryCondition source,
                  HGQuery<R> destination,
                  QueryMetaData metadata)

getAnalysisResult

public Set<HGQueryCondition> getAnalysisResult(String option)

execute

public HGSearchResult<SearchResult> 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<SearchResult>

analyze

public Map<String,Set<HGQueryCondition>> analyze()