com.orientechnologies.orient.core.sql

Class OFilterAnalyzer

java.lang.Object

com.orientechnologies.orient.core.sql.OFilterAnalyzer

public class OFilterAnalyzer
extends Object

Author:

Artem Orobets (enisher-at-gmail.com)

Constructor Summary

Constructors

Constructor and Description
OFilterAnalyzer()

Method Summary

Modifier and Type	Method and Description
List<OIndexSearchResult>	analyzeCondition(OSQLFilterCondition condition, OClass schemaClass, OCommandContext context) Analyzes a query filter for a possible indexation options.
List<List<OIndexSearchResult>>	analyzeMainCondition(OSQLFilterCondition condition, OClass schemaClass, OCommandContext context)
List<OIndex<?>>	getInvolvedIndexes(OClass iSchemaClass, OIndexSearchResult searchResultFields)

Methods inherited from class java.lang.Object

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

Constructor Detail

OFilterAnalyzer

public OFilterAnalyzer()

Method Detail

getInvolvedIndexes

public List<OIndex<?>> getInvolvedIndexes(OClass iSchemaClass,
                                          OIndexSearchResult searchResultFields)

analyzeMainCondition

public List<List<OIndexSearchResult>> analyzeMainCondition(OSQLFilterCondition condition,
                                                           OClass schemaClass,
                                                           OCommandContext context)

analyzeCondition

public List<OIndexSearchResult> analyzeCondition(OSQLFilterCondition condition,
                                                 OClass schemaClass,
                                                 OCommandContext context)

Analyzes a query filter for a possible indexation options. The results are sorted by amount of fields. So the most specific items go first.

Parameters:

condition - to analyze

schemaClass - the class that is scanned by query

context - of the query

Returns:

list of OIndexSearchResult items